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Insights into glendonite formation from the upper Oligocene Sagavanirktok Formation, North Slope, Alaska, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2024-04-30 John W. Counts, Madeleine L. Vickers, M. Rebecca Stokes, Whittney Spivey, Kristina F. Gardner, Jean M. Self-Trail, Jared T. Gooley, Ryan J. McAleer, Aaron M. Jubb, David W. Houseknecht, Richard O. Lease, Neil P. Griffis, Martin Vickers, Kasia ŚLiwińSka, Hannah G.D. Tompkins, Adam M. Hudson
The type locality for the upper Oligocene Nuwok Member of the Sagavanirktok Formation (Carter Creek, North Slope, Alaska, USA) contains an abundant occurrence of glendonite, a pseudomorph after the calcium-carbonate mineral ikaite, which typically forms in the shallow subsurface of cold marine sediments. The region during the time of Nuwok Member deposition was located at a high latitude, similar to
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Diagenetic evolution of secondary evaporites and associated host-rock dolostones in the Huron Domain (Michigan Basin): insights from petrography, geochemistry, and C-O-S-Sr isotopes J. Sediment. Res. (IF 2.0) Pub Date : 2024-04-30 Ihsan S. Al-Aasm, Richard Crowe, Marco Tortola, Merve Özyurt
In this study, we present a detailed investigation of C-O-S-Sr isotope systematics and elemental analysis of secondary sulfates and associated host-rock carbonates of Cambrian to Devonian sedimentary successions along the eastern flank of the Michigan Basin, Ontario. This study evaluates the diagenetic evolution of pore fluids and their sources in fracture-fill and replacement sulfate minerals in low-permeability
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An eolian dust origin for clastic fines of Devono-Mississippian mudrocks of the greater North American midcontinent—Reply J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Austin J. McGlannan, Alicia Bonar, Lily Pfeifer, Sebastian Steinig, Paul Valdes, Steven Adams, David Duarte, Benmadi Milad, Andrew Cullen, Gerilyn S. Soreghan
We thank Wilson and Schieber for their discussion, as our paper in Current Ripples presented a new hypothesis, and we welcome tests of that hypothesis. Current Ripples encourages “provocative papers on sedimentary geology” so we are happy to motivate future research toward advancing knowledge on the Devono-Mississippian of North America.Through an integration of paleogeography, paleoclimate, grain
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Quantifying a tide-dominated, wave-, and river-influenced delta in Miocene facies of the Niger Delta basin J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Sunny C. Ezeh, Janok P. Bhattacharya
The modern Niger Delta has long been classified as a mixed tide-, wave-, and river-influenced delta. Still, no detailed studies have quantified the relative proportions of formative processes and facies. This work presents the first quantitative estimate of the relative influence of formative processes in Miocene deposits based on core data from the Greater Ughelli, Central Swamp, and Coastal Swamp
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Interpreted depositional conditions of balanced-fill lake basin strata incorporating vertebrate and invertebrate trace fossils, Triassic Santa Clara sub-basin, Cuyana rift basin, Argentina J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Cecilia A. Benavente, kevin M. Bohacs, Adriana C. Mancuso
The Santa Clara Abajo and Santa Clara Arriba formations host a diverse assemblage of trace fossils that record a wide range of behaviors and a broad array of ecological niches during the Middle Triassic—a critical period in the evolution of continental fauna with the diversification of both synapsids (cynodont and dicynodont) and archosauromorphs (dinosaurs, pterosaurs, and crocodilians) that represent
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A Pliocene lacustrine system in the Nellis basin, southern Nevada, USA: implications for the Colorado River drainage system J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Brett T. Mclaurin, Dirk goossens, Brenda J. Buck, Wanda Taylor
Lacustrine basins and the sediments in them provide a critical component of regional tectonic development and climate history. Each sub-basin in the landscape records the interplay between active tectonism and shifting climate. Many of the basins in southern Nevada that contain deposits of the Muddy Creek Formation were closed fluvio-lacustrine systems during the latest Miocene and into the Pliocene
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Production and abundance of macro-aggregate bed clasts from moderately consolidated cohesive beds and their implications for sediment management J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 David W. Perkey, S. Jarrell Smith, Kelsey A. Fall, Danielle R.N. Tarpley, Carl T. Friedrichs
Flume-based research has demonstrated that large (> 1mm), high-water-content mud aggregates can be eroded from cohesive beds and transported in bedload. Studies have also documented these types of mud clasts preserved in the lithologic record. However, questions pertaining to the abundance of muddy bed aggregates and the physical properties that result in their production remain largely unaddressed
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Diagenesis of carbonate density-flow deposits controlled by differential uplift of platform segments: Examples from the Cretaceous of the Gargano Promontory, Italy J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 GUNNAR SÆLEN, LUIGI SPALLUTO, NIELS BO JENSEN, IVAR GRUNNALEITE, ATLE JØRGEN HESTAD SANDE, PER OLAV EIDE SVENDSEN, GAETANO OSSO, NICOLA PAOLI, MICHAEL R. TALBOT
Thin-section investigation (polarized-light, cathodoluminescence, and ultraviolet microscopy) combined with isotopic (δ18O, δ13C,87Sr/86Sr) analyses of bulk carbonate samples form the basis for evaluating the diagenetic alteration of Albian–Cenomanian and Maastrichtian density-flow deposits off two segments of the Apulia Carbonate Platform in the Gargano Promontory, Italy. We propose that differential
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Formation of ammonite concretions through organic decomposition in the iron-reduction zone J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Yusuke Muramiya, Hidekazu Yoshida, Nagayoshi Katsuta, Ryusei Kuma, Tomoyuki Mikami
The ammonites in spherical carbonate concretions often preserve their original three-dimensional (3-D) shell shapes and detailed fragile structures. However, the formation process of spherical ammonite concretions is not fully understood. Herein, the ammonite concretions identified in the Cretaceous (Campanian) Osoushinai Formation, Yezo Group, Japan, are examined to understand their formation process
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Using delta channel width to estimate paleodischarge in the rock record: geometric scaling and practical sampling criteria J. Sediment. Res. (IF 2.0) Pub Date : 2024-02-29 Octria Adi Prasojo, Anna E. Van Yperen, Trevor B. Hoey, Amanda Owen, Richard Williams
Quantifying paleodischarge from geological field observations remains a key research challenge. Several scaling relationships between paleodischarge and channel morphology (width, depth) have been developed for rivers and river deltas. Previous paleodischarge scaling relationships were based on discharge–catchment-area scaling and an empirical flow-velocity estimate (e.g., the Chézy equation, the Manning
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SUPERCRITICAL FLUVIAL STYLES AND THE SHIFTING ARIDITY IN THE EARLY TRIASSIC: THE EXAMPLE OF THE SANGA DO CABRAL FORMATION, PARANá BASIN, BRAZIL J. Sediment. Res. (IF 2.0) Pub Date : 2023-12-31 PEDRO L.A. XAVIER, CLAITON M. DOS S. SCHERER, ADRIANO DOMINGOS DOS REIS, EZEQUIEL GALVÃO DE SOUZA, FELIPE GUADAGNIN, GRACIELA PIÑEIRO
Froude-supercritical bedforms and associated sedimentary structures are formed in turbulent flows when the value of the Froude number is Fr > 1. They have been increasingly studied in recent years, and while they were previously considered to be of rare preservation, they have been increasingly identified in modern settings and the rock record. In alluvial systems, these structures are being recognized
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HIGH-PRECISION ALGORITHM FOR GRAIN SEGMENTATION OF THIN SECTIONS BY MULTI-ANGLE OPTICAL-MICROSCOPIC IMAGES J. Sediment. Res. (IF 2.0) Pub Date : 2023-12-31 Timur Murtazin, Zufar Kayumov, Vladimir Morozov, Radik Akhmetov, Anton Kolchugin, Dmitrii Tumakov, Danis Nurgaliev, Vladislav Sudakov
This paper introduces an algorithm for automating the analysis of petrographic thin-section images of sandstones and siltstones. The images of thin sections are obtained in polarized light at magnifications providing good image quality. In addition, the images for each section are obtained at different angles of rotation of the microscope stage. Augmentation is applied to the obtained photographs:
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THE MORPHODYNAMICS AND SEDIMENTOLOGY OF A SEASONALLY CONTROLLED MICROTIDAL TIDAL INLET: THE NARIVA RIVER TIDAL INLET, COCOS BAY, TRINIDAD J. Sediment. Res. (IF 2.0) Pub Date : 2023-12-31 Saeed Khan, Brent Wilson, Ryan Ramsook, Hasley Vincent
The geomorphology and sedimentology of the Nariva River tidal-inlet complex, a microtidal fluvially influenced tidal-inlet complex, was analyzed. The complex comprises a recurved spit, an ebb-tidal channel, and an ebb-tidal delta. Morphological trends in the spatio-temporal evolution of the inlet complex were observed and recorded from Google Earth™ timelapse satellite images taken from 2003 to 2019
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DIAGENETIC EFFECT ON RESERVOIR QUALITY OF SILICICLASTIC AND VOLCANICLASTIC SANDSTONES FROM A PALEOGENE VOLCANIC RIFTED MARGIN, EAST GREENLAND J. Sediment. Res. (IF 2.0) Pub Date : 2023-12-31 Rikke Weibel, Henrik Vosgerau, Michael Larsen, Pierpaolo Guarnieri, Thomas Find Kokfelt, Knud Dideriksen, Tonci BaliĆ-ŽuniĆ, Brian Bell
Siliciclastic and volcaniclastic sediments in a volcanic rifted-margin succession may experience a complex diagenetic history during burial that can have a large impact on sandstone reservoir properties. To understand such changes, variations in initial sediment composition and succeeding diagenetic changes have been studied for a Paleogene outcrop analogue in the Kangerlussuaq area, East Greenland
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FOLDED CALCITE CRACKS IN NONCALCAREOUS SHALES: A WINDOW INTO SHALE DIAGENESIS AND HYDROTHERMAL INFLUENCE J. Sediment. Res. (IF 2.0) Pub Date : 2023-12-31 Bin Sun, Wan Yang
Shale diagenesis is not well understood, and cracks in shale contain important information about diagenetic conditions. The way these cracks open reveals physical changes in the sediment, and the infilling minerals provide insight into the chemical conditions of the formation water. Typically, the authigenic minerals filling the folded cracks are consistent with the chemical composition of the host
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CONTROLS ON BIOTURBATION AND SEDIMENT DISTRIBUTION IN CARBONATE SHOREFACE DEPOSITS: INSIGHTS FROM HETEROGENEITY IN PLEISTOCENE AND RECENT STRATA J. Sediment. Res. (IF 2.0) Pub Date : 2023-11-30 Alexa R. Goers, Stephen T. Hasiotis, Eugene C. Rankey
Burrowing organisms alter sedimentary textures, influence cement distribution, and affect petrophysical characteristics of carbonate strata. Although many descriptions of carbonate successions reference bioturbation, quantitative data on spatial variability of trace fossils is rare, and fewer studies address trace-fossil influence on postdepositional modification of sedimentary deposits, which can
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SALTERN, MUDFLAT, AND DRY PLAYA: PLAYA BASIN TYPES OF A RETREATING EPEIRIC SEA (KEUPER, GERMANY) J. Sediment. Res. (IF 2.0) Pub Date : 2023-11-30 Christoph Leitner, Mathias Köster, Friedrich Finger
Playa basins contain saline lakes and the evaporitic mudflats around them. However, playa basins can be different if they are fed by marine incursions, dominated by perennial lakes of brackish or fresh water, or dominantly dry. A discrimination of playa types, which originated under such different conditions, can be difficult in the rock record. The present study contributes to our understanding of
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FLUME EXPERIMENTS IN THE DEVELOPMENT OF CREVASSE-SPLAY DEPOSITS: TRANSITION FROM ASYMMETRIC TO SYMMETRIC GEOMETRY J. Sediment. Res. (IF 2.0) Pub Date : 2023-11-30 Taichi Kato, Masaki Yamada, Hajime Naruse, Yuichi Sakai
Crevasse-splay deposits play an important role in the reconstruction of the magnitude of past flood events and in understanding the behavior of river systems. Despite the extensive studies conducted on the geometry and facies of crevasse-splay deposits, their spatiotemporal developmental processes have remained insufficiently understood. In this study, scaled flume experiments were conducted to study
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CLIMATO-TECTONIC EVOLUTION OF SILICICLASTIC SANDSTONES ON PUERTO RICO: FROM LITHIC ARENITES TO QUARTZ-ARENITIC SANDS IN AN OCEANIC ISLAND-ARC SETTING J. Sediment. Res. (IF 2.0) Pub Date : 2023-11-30 David K. Larue, Kimberly Mendez Mendez, José L. Corchado Albelo, Lauryn N. Martinez, K. Stephen Hughes, Thomas Hudgins, Hernan Santos, Alan L. Smith, Chris Osterberg
Siliciclastic sandstone composition on the island of Puerto Rico, part of the Greater Antilles, was influenced by both tectonic setting and climate. Cretaceous through Eocene volcanic and plutonic rocks on Puerto Rico formed in an oceanic-arc setting. Sandstones deposited during arc volcanism are quartz-poor lithic and feldspatholithic arenites, whose geochemistry largely matches that of the oceanic-arc
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MULTISCALE CHARACTERIZATION OF AN EXTENSIVE STROMATOLITE FIELD: A NEW CORRELATION HORIZON FOR THE CRATO MEMBER, ARARIPE BASIN, BRAZIL J. Sediment. Res. (IF 2.0) Pub Date : 2023-10-31 Luís Fernando Silveira, Leonardo Borghi, Fabia Emanuela Rafaloski Bobco, Bruno César Araújo, Mateus Kroth, Guilherme Duarte, Laís De Oliveira Ferreira, Joalice De Oliveira Mendonça
There is wide recognition of lacustrine sediments as excellent archives of a basin’s depositional history due to their high sensitivity to environmental changes. Among them, microbial limestones are one of the most valuable tools for paleoenvironmental reconstruction, because the biological agents responsible for their genesis tend to respond to short-lived variations of the depositional setting creating
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BRAIDED-RIVER ARCHITECTURE OF THE TRIASSIC SWARTBERG MEMBER, KATBERG FORMATION, SOUTH AFRICA: ASSESSING AGE, FLUVIAL STYLE, AND PALEOCLIMATE AFTER THE END-PERMIAN EXTINCTION J. Sediment. Res. (IF 2.0) Pub Date : 2023-10-31 Martin R. Gibling, Ruofei Jia, Robert A. Gastaldo, Johann Neveling, Heriberto Rochín-Bañaga
The Triassic Katberg Formation has played a central role in interpreting the end-Permian ecosystem crisis, as part of a hypothesis of aridification, vegetation loss, and sediment release in continental settings. We use drone images of an inaccessible cliff near Bethulie to investigate the Swartberg member, a braided-fluvial body 45 m thick, describing remote outcrop facies to identify geomorphic units
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Subglacial tills: a process model based on microsedimentological clues J. Sediment. Res. (IF 2.0) Pub Date : 2023-10-31 John Menzies, Roger C. Paulen, Jürgen M. Reitner, Cunhai Gao, Tyler Hodder, Martin Ross
Subglacial sediments are subject to erosion, transport, and deposition in active, ephemeral, and spatially localized glacial environments. It is critical to determine how these mobilized sediments become immobilized in a time-transgressive process and can be frequently remobilized and reimmobilized. Microscopic sedimentary structural signatures provide invaluable information on subglacial processes
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Clumped-Isotope Evidence for the Formation of Nonplanar Dolomite Textures at Near-Surface Temperatures J. Sediment. Res. (IF 2.0) Pub Date : 2023-10-31 Brooks H. Ryan, Sierra V. Petersen, John M. Rivers, Stephen E. Kaczmarek
Dolomite textures are widely interpreted to reflect physical, mineralogical, and geochemical conditions of crystal growth. In particular, nonplanar dolomites, which display non-faceted crystal boundaries and a low percentage of crystals with compromise boundaries with preserved crystal-face junctions, have long been cited as evidence of crystal growth in fluids warmer than a theoretical dolomite critical
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An operational classification system for the South Atlantic pre-salt rocks J. Sediment. Res. (IF 2.0) Pub Date : 2023-10-31 Luiz Fernando De Ros, Daniel M. Oliveira
The giant Aptian reservoirs and associated lacustrine rocks of the South Atlantic pre-salt section present a series of unique characteristics, which make the systems created for marine carbonate rocks quite inadequate for their classification. Based on our experience with the characterization of thousands of samples of the pre-salt reservoirs and associated deposits from the Brazilian basins, and on
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Provenance of modern sands from Baja California rivers (Mexico): petrographic constraints from light and heavy minerals J. Sediment. Res. (IF 2.0) Pub Date : 2023-09-30 Emilia Le Pera, Anna Chiara Tangari, Lucia Marinangeli, Consuele Morrone, Lars Riber, Sergio Andò
We used high-resolution petrographic and dense-mineral data on modern sand to investigate erosion patterns of the El Rosario, San Fernando, and San Vicente river basins of Baja California (Mexico) to better understand the interrelationships between a complex magmatic arc terrane and surface processes. Modern sand composition of these three rivers reflects the nature of the source region, which lies
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Coupled channel–floodplain dynamics and resulting stratigraphic architecture viewed through a mass-balance lens J. Sediment. Res. (IF 2.0) Pub Date : 2023-09-30 Kyle M. Straub, Ripul Dutt, Robert A. Duller
Basin-wide accommodation production and associated sediment mass deposition exert fundamental controls on stratigraphic architecture, but the details of this relationship are not fully understood. This is because it is unknown how accommodation production directly influences morphodynamics both in terms of channel process (i.e., channel migration, channel avulsion) and floodplain process, both of which
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It’s a trap!: Modern and ancient halite as Lagerstätten J. Sediment. Res. (IF 2.0) Pub Date : 2023-09-30 Martha E. Gibson, Kathleen C. Benison
Chemical sediments, such as bedded halite (NaCl), are strongly influenced by environmental conditions during deposition and, if unaltered, may preserve microorganisms, microfossils, and organic compounds for hundreds of millions of years. Recent studies show that halite is an excellent repository for organic materials, as well as a variety of environmental data. Halite is a perfect trap. Due to its
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Subtidal to intertidal deposits in a mixed clastic–carbonate epicontinental seaway, the Windy Hill Sandstone and Upper Sundance Formation (Oxfordian), Wyoming, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-09-30 Anton F.-J. Wroblewski, Jon Schueth
Oxfordian deposits in northern Colorado and Wyoming, USA, preserve proximal, intertidal, clastic, coastal deposits and distal, offshore to nearshore, subtidal bioclastic facies that accumulated during a forced regression of the Jurassic epeiric sea. This contrasts with the common association between tidal deposits, carbonate facies, and rising sea level common to many depositional models of mixed clastic–carbonate
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A 3-D-printed precision sediment feed J. Sediment. Res. (IF 2.0) Pub Date : 2023-08-31 Monte Fleming
Reproducible and regulated sediment feed rates are necessary for many flume experiments. A sediment feed mechanism capable of precisely providing a wide range of feed rates was developed for this purpose. It was constructed using wood, aluminum, and 3-D-printed components. It is powered by a stepper motor and controlled by an Arduino, and is easily programmable. Commercially available sediment feeds
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Multiproxy provenance analyses in the Devonian Villavicencio Formation of the Mendoza Precordillera, Argentina: correlation and geotectonic implications for the SW Gondwana margin J. Sediment. Res. (IF 2.0) Pub Date : 2023-08-31 FEDERICO D. WENGER, JONATAN A. ARNOL, NORBERTO J. URIZ, CARLOS A. CINGOLANI, PAULINA ABRE, MIGUEL A.S. BASEI
This work focuses on the sedimentary provenance of the Villavicencio Formation of the Mendoza Precordillera and integrates the information obtained with previous work on other coeval units of the Precordillera Central of San Juan province (Gualilán Group: Talacasto and Punta Negra formations) in western Argentina. Multiproxy provenance analyses are carried out from different applied methodologies (petrography
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The Role of Cyanobacteria In the Microfabric Heterogeneity of Cambrian Leiolite, North China J. Sediment. Res. (IF 2.0) Pub Date : 2023-08-31 Mingxiang Mei, Muhammad Riaz, Ardiansyah Koeshidayatullah, Ziliang Liu, Mohamed S. Ahmed, Douaa Fathy
Based on their mesostructures, carbonate microbialites are divided into four major groups: laminated stromatolite, clotted thrombolites, structureless leiolites, and dendritic dendrolite. Among the various types of microbialites, leiolites, also known as “cryptomicrobial deposits,” are uncommon in the stratigraphic records. This is exacerbated by leiolites relatively structureless and aphanitic structure
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Sedimentology and stratigraphy of the earliest deltaic shorelines of the Paleocene Lower Wilcox Group in the Gulf of Mexico J. Sediment. Res. (IF 2.0) Pub Date : 2023-08-31 Mariana I. Olariu
Large-scale growth of shelf-to-slope margins is well documented in regional 2-D seismic data, but it is only rarely linked to sedimentological processes and detailed stratigraphic architecture at smaller scales. This study documents the building of a shelf-to-slope margin topset through successive shoreline regressions and transgressions by using data from 824 wells, 80 m of core from 4 wells, and
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Stratigraphic architecture and distribution patterns of submarine fan-reservoir elements: insights derived from the Pliocene and Pleistocene Bengal Fan J. Sediment. Res. (IF 2.0) Pub Date : 2023-07-31 Dongwei Li, Chenglin Gong, Daoyao Ge, Guozhang Fan, Ronald J. Steel, Dali Shao, Kun Qi
3-D seismic data from the Bengal Fan along with spectral decomposition and RGB color blending techniques display stratigraphic architectures and spatiotemporal distribution patterns of submarine fan-reservoir elements in stark detail. Seven reservoir elements are recognized in Pliocene and Pleistocene channel–lobe complexes (i.e., subfans) developed on the northeastern fringe of the Bengal Fan. Among
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Accumulation of thick fluvial sediments in the Shinano River incised-valley fills: implications for sequence stratigraphy and alluvial architecture J. Sediment. Res. (IF 2.0) Pub Date : 2023-07-31 Kazuaki Hori, Susumu Tanabe, Atsushi Urabe
The relationship between fluvial systems and base-level changes, controlled mainly by sea-level fluctuations and tectonic activity, on time scales of 103–104 years, is important for evaluating and improving nonmarine sequence stratigraphy and numerical and physical alluvial architecture models. However, there are not enough quantitative data available from field studies, especially for periods of rapid
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Effects of currents and waves on the morphologies of coastal sandy clinoforms: sediment mobility calculations based on current meter and wave data from Southern California, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-07-31 Neil C. Mitchell, Zhongwei Zhao
In some wave-exposed coasts, sandy clinoforms occur with rollovers (locations where their surfaces steepen) at ∼ 20–60 m depth. They have been suggested to have formed from sand mobilized by strong wave agitation in shallow water that has deposited in more tranquil deeper water beyond the rollover, although other suggested origins of clinoforms might also apply. In situ information on active sediment
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Dolomite mineralogy as a proxy record for lake level fluctuations: a case study from the Eocene Uteland Butte Member of the Green River Formation, Uinta Basin, Utah, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-07-31 Cameron J. Manche, Stephen E. Kaczmarek
The Eocene Uteland Butte Member of the Green River Formation in the Uinta Basin is characterized by lacustrine carbonate depositional cycles consisting of calcareous shales, limestones, and dolomites that have been interpreted to reflect climatically driven lake level fluctuations. Previous work suggests that dolomitization of three distinct stratigraphic intervals in the Uteland Butte Member—the PZ-1
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Anatomy of a fluvial paleo-fan: sedimentological and architectural trends of the Paleocene–Eocene Wasatch–Colton System (western Uinta Basin, Utah, U.S.A.) J. Sediment. Res. (IF 2.0) Pub Date : 2023-06-30 Davide Carraro, Dario Ventra, Andrea Moscariello
Recent developments in fluvial geomorphology and sedimentology suggest that fluvial fans (also known as distributive fluvial systems) could be responsible for the accumulation of great volumes of clastic successions in continental basins. A general depositional model based on sedimentological and architectural trends has been formulated for these fluvial systems, however, their recognition in the stratigraphic
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Late Quaternary fluvial environments at Abo Arroyo, New Mexico, U.S.A.: response to millennial-scale climate change J. Sediment. Res. (IF 2.0) Pub Date : 2023-06-30 Stephen A. Hall
Abo Arroyo is a tributary of the Rio Grande in central New Mexico. Its alluvial sequence is made up of four informal units, their age defined by 44 AMS radiocarbon dates from 12.8 ka to 0.85 ka. The earliest, unit 1, is terminal Pleistocene to early Holocene (12.8 ka to 9.0 ka), including the Scholle wet meadow (12.3 ka to 11.1 ka) related to the Younger Dryas. After an erosional gap in the record
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The southern Wyoming Laramide basin: implications for long-term tectonic control on uplift and subsidence J. Sediment. Res. (IF 2.0) Pub Date : 2023-06-30 Keith P. Minor, Ronald J. Steel, Cornel Olariu, Anton F.-J. Wroblewski
An evolving tectonic setting during the Late Cretaceous and Paleocene drove the dramatic transformation of southern Wyoming from a broad marine shelf setting to a series of lacustrine basins. Early dominant control of depositional patterns by flexural tectonics gave way to control by dynamic topography and Laramide-style deformation. The southern Wyoming region demonstrates how progressive partitioning
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Stratigraphic architecture and fluvial interpretations of the Upper Cretaceous (Turonian?) Middendorf Formation, Chesterfield County, South Carolina, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-06-30 Christopher S. Swezey, Bradley A. Fitzwater, G. Richard Whittecar
The Upper Cretaceous (Turonian?) Middendorf Formation is a sand-rich stratigraphic unit of fluvial origin that forms a large aquifer in the U.S. Atlantic Coastal Plain. In Chesterfield County (South Carolina), which is the site of the type locality, the formation ranges in thickness from 66.5 to > 119.7 meters. The base of the formation is an unconformity above Paleozoic metasiltstone, and the upper
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Paleosol-derived paleoclimate and paleoenvironment reconstruction of the Rukwa Rift Basin, Tanzania: implications for faunal dispersal in the Miocene–Pliocene J. Sediment. Res. (IF 2.0) Pub Date : 2023-05-31 Theresa J. Orr, Eric M. Roberts, Michael I. Bird, Cassy Mtelela, Patrick M. O'Connor, Nancy J. Stevens
The East African Rift System records a key interval in the evolution of modern African ecosystems, documenting significant floral changes and faunal dispersals in the context of environmental shifts. To date, Miocene-to-Pliocene data from eastern Africa have been derived primarily from richly fossiliferous rift basins along the far north of the Eastern Branch of the rift, with more limited windows
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Analysis of the fluvial stratigraphic response to the Paleocene–Eocene Thermal Maximum in the Bighorn Basin, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-05-31 Amanda Owen, Adrian J. Hartley, Trevor B. Hoey, Alena Ebinghaus, David W. Jolley, Gary S. Weissmann
Geological deposits can reveal how environments of the past have responded to climate change, enabling important insights into how environments may respond to our current anthropogenically induced warming. The Paleocene–Eocene Thermal Maximum (PETM) occurred ca. 56 Ma and was a short-lived (approximately 200,000 years) global warming event (5–8°C rise). The PETM has been investigated at several terrestrial
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Fluvial character and architecture of an outcrop using sedimentology combined with UAV-based modeling, Cretaceous McMurray Formation, NE Alberta, Canada J. Sediment. Res. (IF 2.0) Pub Date : 2023-05-31 Derek A. Hayes, Scott E. Botterill, Michael J. Ranger, Murray K. Gingras
It is widely accepted that most occurrences of inclined heterolithic stratification (IHS) in the rock record form by laterally accreting point bars in freshwater fluvial, tidally influenced fluvial, or tidally dominated estuary channels. Despite the widespread distribution of IHS in the subsurface and outcropping strata of the lower Cretaceous McMurray Formation, the large-scale depositional architecture
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Multiple scours and upward fining caused by hydraulic jumps: implications for the recognition of cyclic steps in the deepwater stratigraphic record J. Sediment. Res. (IF 2.0) Pub Date : 2023-04-30 Kenya Ono, Hajime Naruse, Qifeng Yao, Zhirong Cai, Sojiro Fukuda, Miwa Yokokawa
Hydraulic jumps control the bypass, erosion, and depositional processes of Froude-supercritical turbidity currents, so they represent a significant process for understanding the development of submarine geomorphology. Hydraulic jumps actively occur from submarine canyons to fans, where the seafloor slope is relatively steep. Turbidites in such areas comprise large-scale bedforms called cyclic steps
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Petrology of Bengal Fan turbidites (IODP Expeditions 353 and 354): provenance versus diagenetic control J. Sediment. Res. (IF 2.0) Pub Date : 2023-04-30 Mara Limonta, Eduardo Garzanti, Alberto Resentini
High-resolution petrographic and heavy-mineral analyses of Bengal Fan turbidites from six cores drilled during IODP Expeditions 353 and 354 elucidate factors controlling their intersample compositional variability as a key to understanding sedimentary processes and erosional evolution of the Himalayan belt since the Miocene. Bengal Fan turbidites are feldspatho-quartzose to litho-feldspatho-quartzose
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Environmental and microbial influence on chemistry and dolomite formation in an ancient lake, Green River Formation (Eocene), Uinta basin, Utah, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2023-04-30 Maxwell Pommer, J. Frederick Sarg, Forrest McFarlin
Integrated stratigraphic, petrographic, and geochemical data allow interpretation of biogeochemical and mineralization processes in paleoenvironmental context of ancient lacustrine environments. These indicate that lake chemistry, microbial processes, and organic matter (OM) strongly influenced dolomite formation in near-surface environments throughout deposition of the Green River Formation (Eocene
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Decompositional processes of microbial carbonates in Lagoa Vermelha, Brazil J. Sediment. Res. (IF 2.0) Pub Date : 2023-03-31 Fumito Shiraishi, Yusaku Hanzawa, Jiro Asada, Leonardo Fadel Cury, Anelize Manuela Bahniuk
In Lagoa Vermelha, Brazil, a lagoonal stromatolite and a saltpan microbial mat are investigated to understand the influence of environmental changes on the decomposition of microbial carbonates. The lagoonal stromatolite, composed mainly of magnesian calcite and aragonite, is developed on a dolomite-containing carbonate crust. While most stromatolites are eroded to the water surface level, some smaller
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Warm acidified seawater: a dolomite solution J. Sediment. Res. (IF 2.0) Pub Date : 2023-03-31 John M. Rivers
The “dolomite problem” is the product of two distinct observations. First, there are massive amounts of ancient marine limestone (CaCO3) deposits that have been replaced by the mineral dolomite (MgCa(CO3)2). However, recent (Holocene and Pleistocene) marine deposits contain relatively minuscule amounts of dolomite, although the occurrence of small quantities of dolomite is observed in many modern settings
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Lateral and temporal variations of a multi-phase coarse-grained submarine slope channel system, Upper Cretaceous Cerro Toro Formation, southern Chile J. Sediment. Res. (IF 2.0) Pub Date : 2023-03-31 Guilherme Bozetti, Benjamin Kneller, Bryan T. Cronin, Pan Li, Adam McArthur, Jingping Xu
Understanding variations in the sedimentary processes and resulting stratigraphic architecture in submarine channel systems is essential for characterizing sediment bypass and sedimentary facies distribution on submarine slopes. In the Santonian to Campanian Cerro Toro Formation, southern Chile, a coarse-grained slope system, informally known as the Lago Sofia Member, developed in a structurally controlled
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Always a White Christmas in the Bahamas: temperature and hydrodynamics localize winter mud production on Great Bahama Bank J. Sediment. Res. (IF 2.0) Pub Date : 2023-03-31 Sam J. Purkis, Amanda M. Oehlert, Thomas Dobbelaere, Emmanuel Hanert, Paul (Mitch) Harris
Whitings, or occurrences of fine-grained carbonate in the water column, have been observed in modern environments with salinities ranging from fresh to marine conditions, and thick deposits of lime mud are described throughout the geological record. Despite their ubiquity, the trigger for whitings has been debated for more than eighty years. Satellite data reveal that most whitings are restricted to
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The critical role of recycling of post-Grenvillian, Neoproterozoic sediments for Phanerozoic Laurentian clastic systems: evidence from detrital-zircon and -monazite geochronology and textures J. Sediment. Res. (IF 2.0) Pub Date : 2023-02-28 David P. Moecher, Steven C. Zotto, Scott D. Samson
Lithic and quartz arenites of the Central Appalachian Basin deposited by late Paleozoic Laurentian fluvial systems are widely interpreted to be sourced by recycling of late Precambrian and early Paleozoic clastic sequences in the Appalachian Orogen. U-Pb and (U-Th)/He age distributions for detrital-zircon and Th-Pb age distributions for detrital-monazite, detrital-zircon and monazite textures (including
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The impact of tectonic activity on carbonate density-flow deposition along two sectors of the Apulia Carbonate Platform J. Sediment. Res. (IF 2.0) Pub Date : 2023-02-28 Gunnar Sçlen, Luigi Spalluto, Ivar Grunnaleite, Atle Jørgen Hestad Sande, Niels Bo Jensen, Per Olav Eide Svendsen, Gaetano Osso, Nicola Paoli, Michael R. Talbot
Generation of thick megabreccias along carbonate platforms apparently relies on the establishment of overpressured zones in the margin and upper slope deposits (particularly during relative sea-level lowstands), but the main triggering mechanism is thought to be seismic tremors. Here, we present a detailed sedimentological analysis of carbonate density-flow deposits south and north of the Mattinata
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Controls on grain-size variability in the Holocene fill of the Indus Submarine Canyon J. Sediment. Res. (IF 2.0) Pub Date : 2023-02-28 Yuting Li, Peter D. Clift
What processes control grain size and bed thickness in submarine canyon deposits? Erosive, shelf-cutting canyons contrast with accretionary basin-floor submarine fan accretionary channels because the former tightly constrain turbidity flows in deep channels. This study addresses such a deep-water depositional system in the Indus Submarine Canyon using a series of cores collected along the canyon. Grain-size
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Grain size and mineral variability of glacial marine sediments J. Sediment. Res. (IF 2.0) Pub Date : 2023-01-31 John T. Andrews, Wendy J. Roth, Anne E. Jennings
Glacial marine sediment deposition varies both spatially and temporally, but nearly all studies evaluate down-core (∼ time) variations in sediment variables with little consideration for across core variability, or even the consistency of a data set over distance scales of 1 to 1000 m. Grain size and quantitative X-ray diffraction (qXRD) methods require only ≤ 1 g of sediment and thus analyses assume
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Sedimentology and stratigraphic evolution of fluvial–tidal transition reservoirs: an outcrop analog for the hydrocarbon-bearing Bahariya Formation, Western Desert, Egypt J. Sediment. Res. (IF 2.0) Pub Date : 2023-01-31 Selim Saber Selim
The deposits of the tidal–fluvial transition zone are one of the most significant and complicated components of marginal marine systems. Sedimentological studies of these deposits are necessary due to their heterogeneous nature, which is controlled by competing tidal and fluvial parameters. Outcrop studies are required to understand the architecture, sedimentology, and evolution of tidal–fluvial deposits
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Uplifting mountains and shaking deserts: volcano-tectonic earthquakes revealed by soft-sediment-deformation structures in Upper Cretaceous aeolian deposits J. Sediment. Res. (IF 2.0) Pub Date : 2023-01-31 Luciano Alessandretti, Lucas V. Warren, Filipe G. Varejão, Raul Rassi, Maurício G.M. Dos Santos, Mariana N.M. Silva, Fernando R. Honorato, Michele J.T. Estrada, João V.O. Cunha
During the last stages of Gondwana fragmentation, large regions of the newly formed South American continent were covered by extensive deserts. Some parts of this continental landmass were synchronously affected by pronounced tectonism and magmatism, which were responsible for reshaping the regional topography. In this context, the southwestern part of the Sanfranciscana Basin in central Brazil is
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Coastal switching of dominant depositional processes driven by decreasing rates of Holocene sea-level rise along the macrotidal coast of Gochang, SW Korea J. Sediment. Res. (IF 2.0) Pub Date : 2023-01-31 Hyun HO Yoon, Woo Hun Ryang, Seung Soo Chun, Alexander R. Simms, Jin Cheul Kim, Tae Soo Chang, Dong-Geun Yoo, Seok-Hwi Hong
Decreasing rates of eustatic sea-level rise during the Holocene accompanied the deposition of transgressive coastal deposits worldwide. However, unraveling how transgressive deposition varies in response to different rates of relative sea-level (RSL) rise is limited by the scarcity of long (10+ m) well-dated cores spanning the entire middle to late Holocene record along macrotidal coasts. To investigate
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Reconstructing paleosinuosity and sedimentary mass balance in the Upper Triassic Shinarump paleoriver in Utah and Arizona, U.S.A. J. Sediment. Res. (IF 2.0) Pub Date : 2022-12-31 Robert Hayes, Peter DeCelles
The Upper Triassic Shinarump Member forms the basal part of the Chinle Formation in the western interior United States and was deposited by a continental-scale fluvial system which ran approximately 2,500 km from the Ouachita Orogen in the east into the Auld Lang Syne marine basin in the west. Previous studies of the Shinarump Member have concluded that the deposits represent a braided-river system
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An eolian dust origin for clastic fines of Devono-Mississippian mudrocks of the greater North American midcontinent J. Sediment. Res. (IF 2.0) Pub Date : 2022-12-31 Austin J. McGlannan, Alicia Bonar, Lily Pfeifer, Sebastian Steinig, Paul Valdes, Steven Adams, David Duarte, Benmadi Milad, Andrew Cullen, Gerilyn S. Soreghan
Upper Devonian and Lower–Middle Mississippian strata of the North American midcontinent are ubiquitously fine-grained and silt-rich, comprising both so-called shale as well as argillaceous limestone (or calcareous siltstone) that accumulated in the Laurentian epeiric sea. Although long recognized as recording marine deposition, the origin and transport of the fine-grained siliciclastic material in
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Episodic postglacial deltaic pulses in the Gulf of Cadiz: Implications for the development of a transgressive shelf and driving environmental conditions J. Sediment. Res. (IF 2.0) Pub Date : 2022-12-31 Álvaro Carrión-Torrente, Francisco José Lobo, Ángel Puga-Bernabéu, Isabel Mendes, Susana Lebreiro, Marga García, David van Rooij, María Luján, María Isabel Reguera, Laura Antón
The postglacial sea-level rise after the Last Glacial Maximum provided ideal conditions to study the transgressive sedimentary response to sudden shelf flooding driven by different rates of sea-level rise. In this study, a high-resolution seismic stratigraphic interpretation and sedimentological analysis were conducted on data from the northern Gulf of Cadiz continental shelf (SW Iberian Peninsula)