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Stromatolites from the Lower Triassic Virgin Limestone at Blue Diamond, NV USA: The role of dysoxia, enhanced calcification and nutrient availability in the growth of post-extinction microbialites Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-20 Jennifer McCoy Kirton; Adam D. Woods
Microbialites undergo a well – documented resurgence following the Permian – Triassic mass extinction. This comeback has been attributed to several causes, including the emptying of Early Triassic ecosystems by the severity of the extinction, a decline in burrowing activity and intensity, and the unusual chemistry of Early Triassic oceans. A laterally – continuous stromatolite horizon found within
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End-Triassic crisis and “unreefing” led to the demise of the Dachstein carbonate platform: A revised model and evidence from the Transdanubian Range, Hungary Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-20 József Pálfy; Zsófia Kovács; Attila Demény; Zsolt Vallner
The Dachstein platform was an extensive carbonate platform developed on the westernmost shelf of the Neotethys during the Late Triassic, now preserved in various tectonic units disrupted during the Alpine orogeny. Despite being the focus of a multitude of sedimentological, paleontological and other studies, the demise of this platform remains controversial, with contrasting views on the timing and
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Planetary scale geomagnetic secular variation foci in the last 400 years Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-20 Venera Dobrica; Cristiana Stefan; Crisan Demetrescu
The Earth's surface magnetic field and its secular variation (SV) are composed of several constituents, at sub-centennial (60–90 years) and inter-decadal (20–30 years) timescales, of internal origin, and at decadal (~11 years) timescale, of external origin, superimposed on a so-called inter-centennial constituent (timescale of about 400 years or larger). In this study we explore the appearance, structure
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Understanding global land degradation processes interacted with complex biophysics and socioeconomics from the perspective of the Normalized Difference Vegetation Index (1982–2015) Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-19 Hao Li; Xiaohui Yang; Kebin Zhang
In recent decades, the world has been suffering from a severe crisis of land degradation. To combat this, a scientific understanding of global land degradation processes based on empirical evidence is needed. However, a complete study of how the global land degradation processes operate within complex biophysics and socioeconomics is lacking. Depending on the latest Normalized Difference Vegetation
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The decadal sea level variability observed in the Indian Ocean tide gauge records and its association with global climate modes Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-15 J.S. Deepa; C. Gnanaseelan
Decadal sea level variability of the Indian Ocean is studied using long-term tide gauge observations of 17 stations. The existence of close association between Indian Ocean sea level and the global decadal climate modes, such as Pacific Decadal Oscillation (PDO) and/or Atlantic Multidecadal Oscillation (AMO) is revealed in most of the tide gauge data sets. An anti-phase sea level evolution with PDO
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Pre-existing lithospheric weak zone and its impact on continental rifting – The mid-polish trough, central European Basin System Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-14 Stanislaw Mazur; Michał Malinowski; Yuriy Petrovich Maystrenko; Łukasz Gągała
The large portion of Central and NW Europe was subjected to widespread continental rifting since the Carboniferous-Permian transition. This process led to nucleation of several large depocentres, coalescing from the late Permian onwards into the extensive Central European Basin System (CEBS), that grew and evolved until the regional-scale Late Cretaceous inversion. Development of deep grabens from
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Tree growth decline as a response to projected climate change in the 21st century in Mediterranean mountain forests of Chile Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-26 Vladimir Matskovsky; Alejandro Venegas-González; René Garreaud; Fidel A. Roig; Alvaro G. Gutiérrez; Ariel A. Muñoz; Carlos Le Quesne; Karin Klock; Camila Canales
Global Climate Models project that observed climate trends are likely to be preserved and the number of extreme events will be increasing during the rest of the 21st century, which may have a detrimental impact on forest ecosystems. These impacts may include forest decline and widespread dieback of the most vulnerable biomes, such as the Mediterranean Forest of Central Chile (MFCC). Nothofagus macrocarpa
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Multiple Permian-Triassic life crises on land and at sea Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-04 Gregory J. Retallack
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North Sea salt-marsh archives trace past storminess and climate variability Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-23 Dorothea Bunzel; Yvonne Milker; Katharina Müller-Navarra; Helge Wolfgang Arz; Gerhard Schmiedl
Intertidal coastal wetlands are regularly exposed to storm surges and associated flooding, resulting in the recurrent accretion of reworked sediments on the salt-marsh surfaces. In this context, well-stratified salt-marsh sediment sequences provide an exceptional archive to evaluate the response of coastal wetlands to past storm-climate variability. Hence, this study focusses on the investigation of
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Marine late Triassic-Jurassic carbon-isotope excursion and biological extinction records: New evidence from the Qiangtang Basin, Eastern Tethys: Comment and reply Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-06 Jiarun Yin
This is a comment on the Triassic and Jurassic boundary from the Qiangtang region, northern Tibet, reported by Hu et al., 2020, as there is no convincing evidence to support the identification of the boundary in the section, either by stratigraphy or by fossils presented in the paper.
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The meeting place of backarc and foreland rifting: The example of the offshore western Sicily (Central Mediterranean) Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-30 Alfonsa Milia; Pietro Iannace; Maurizio M. Torrente
Coeval rifting processes affecting both backarc, thrust belt and foreland occurred in offshore western Sicily (Central Mediterranean) as indicated by the analysis of a large seismic data set calibrated with well data, onshore data and dredges in a dedicated GIS software environment. Structural pattern of the investigated area, 3-D geological models and a Pliocene-Lower Pleistocene evolution of extensional
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Orbital and suborbital environmental changes in the Western Bering Sea during the last 172 ka Inferred from Diatom and Productivity Proxies Glob. Planet. Change (IF 4.448) Pub Date : 2021-01-04 Sergei Gorbarenko; Galina Malakhova
Diatom abundance and species distribution present a subtle tool for the reconstruction of the orbital and millennial-centennial climate and environmental changes in the southwestern Bering Sea during the last 172 ka, in addition to productivity proxies (chlorine, color b*, and Ca/Ti ratio), magnetic susceptibility, and biomarker proxies derived earlier and in this paper from the sediment core SO201-2-85KL
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The Congo Basin: Stratigraphy and subsurface structure defined by regional seismic reflection, refraction and well data Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-28 Damien Delvaux; Francesca Maddaloni; Magdala Tesauro; Carla Braitenberg
The Congo basin (CB) occupies a large part of the Congo craton, which derived from the amalgamation of different cratonic pieces. As intracratonic basin, it initiated, possibly as a failed rift, in late Mesoproterozoic and evolved during the Neoproterozoic and Phanerozoic in an intraplate setting. For this reason, the CB can be considered a natural laboratory for investigating the processes that govern
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Diurnal to seasonal ventilation in Brazilian caves Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-24 Natasha Sekhon; Valdir F. Novello; Francisco W. Cruz; Barbara E. Wortham; Tulio G.R. Ribeiro; Daniel O. Breecker
Limited studies, particularly in the low-latitudes, exist that monitor cave ventilation, an important process dictating cave geochemical properties. To investigate cave ventilation, we present multi-year monitoring results, including observations of cave-air CO2, cave-air temperature, and cave-air relative humidity, from three Brazilian caves: Paraíso (4.07°S, 55.45°W), Tamboril (16.19°S, 46.59°W)
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Response of the lacustrine flora in East Asia to global climate changes across the K/Pg boundary Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-18 Sha Li; Josep Sanjuan; Qifei Wang; Haichun Zhang; Xiaoqiao Wan
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Quantification and interpretation of the climate variability record Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-08 Anna S. von der Heydt; Peter Ashwin; Charles D. Camp; Michel Crucifix; Henk A. Dijkstra; Peter Ditlevsen; Timothy M. Lenton
The spectral view of variability is a compelling and adaptable tool for understanding variability of the climate. In Mitchell (1976) seminal paper, it was used to express, on one graph with log scales, a very wide range of climate variations from millions of years to days. The spectral approach is particularly useful for suggesting causal links between forcing variability and climate response variability
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Effect of metasomatism on the electrical resistivity of the lithospheric mantle – An integrated research using magnetotelluric sounding and xenoliths beneath the Nógrád-Gömör Volcanic Field Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-04 Levente Patkó; Attila Novák; Rita Klébesz; Nóra Liptai; Thomas Pieter Lange; Gábor Molnár; László Csontos; Viktor Wesztergom; István János Kovács; Csaba Szabó
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The missing craton edge: Crustal structure of the East European Craton beneath the Carpathian Orogen revealed by double-difference tomography Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-30 F. Borleanu; L. Petrescu; B. Enescu; M. Popa; M. Radulian
The Trans-European Suture Zone (TESZ) is the most important and extensive continental suture in Europe, marking the edge of the East European Craton (EEC), from the North Sea to the Black Sea. It corresponds to significant changes in surface geology and deep crustal structure, evident in seismic, gravitational and magnetic studies. However, the TESZ disappears beneath the Eastern Carpathians accretionary
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Response of summer extreme precipitation over East Asia during the mid-Holocene versus future global warming Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-07 Xin Ren; Yingying Sha; Zhengguo Shi; Xiaodong Liu
Changes in extreme precipitation have significant impacts on society and the environment. In recent years, the response of extreme precipitation over East Asia to global warming has received considerable attention; however, few studies have focused on the extreme precipitation in geological warm periods, especially the mid-Holocene—the most recent warm period on the orbital timescale. In this study
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The connection between the Alps and the Carpathians beneath the Pannonian Basin: Selective reactivation of Alpine nappe contacts during Miocene extension Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-14 G. Tari; G. Bada; A. Beidinger; J. Csizmeg; M. Danišik; I. Gjerazi; B. Grasemann; M. Kováč; D. Plašienka; M. Šujan; P. Szafián
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Significant shallow–depth soil warming over Russia during the past 40 years Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-05 Liangzhi Chen; Juha Aalto; Miska Luoto
Knowledge of the spatiotemporal dynamics of the soil temperature in cold environment is key to understanding the effects of climate change on land–atmosphere feedback and ecosystem functions. Here, we quantify the recent thermal status and trends in shallow ground using the most up-to-date data set of over 457 sites in Russia. The data set consists of in situ soil temperatures at multiple depths (0
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New evidence for the periodic bleaching and recovery of Porites corals during the mid-late Holocene in the northern South China Sea Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-07 Hao Wang; Kefu Yu; Shichen Tao; Shendong Xu; Tsai-Luen Yu; Chuan-Chou Shen; Shaopeng Wang
Scattered evidence indicates the occurrence of coral thermal bleaching events during the mid-Holocene. However, information on such occurrences is still very rare. Ten Porites coral cores were drilled from the Wenchang fringing reef of Hainan Island, northern South China Sea. These cores contain mortality surfaces and/or growth discontinuities dating from the mid-late Holocene between 3.4 and 5.7 thousand
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Identifying contributions of climatic and atmospheric changes to autumn phenology over mid-high latitudes of Northern Hemisphere Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-02 Mengdi Guo; Chaoyang Wu; Jie Peng; Linlin Lu; Shihua Li
Variations in autumn phenology (i.e., the end of growing season, EOS) in recent decades have been suggested to be the dynamic response of terrestrial ecosystems to global environmental change. However, predicting EOS change with climate variation is still challenging, given that there are several environmental factors that can affect EOS apart from warming. In this study, EOS over the Northern Hemisphere
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Timing and forcing mechanism of the final Neotethys seawater retreat from Central Iran in response to the Arabia-Asia collision in the late early Miocene Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-03 Jimin Sun; Morteza Talebian; Chunsheng Jin; Weiguo Liu; Zhiliang Zhang; Mengmeng Cao; Brian F. Windley; Morteza Sheykh; Reza Shahbazi; Shengchen Tian
The Iranian Plateau lies in the middle of the Neotethys tectonic domain; to the east it connects with the Tibetan Plateau, and to the west with the Anatolian Plateau and the Alpine orogenic belts. In the Cenozoic it underwent land/sea changes and tectonic uplift in response to the Arabia-Asia plate collision. One of the most prominent geological consequences of the collision was the disappearance of
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Filling of sedimentary basins and the birth of large rivers: The lower Danube network in the Dacian Basin, Romania Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-30 Csaba Krézsek; Cornel Olariu
Large rivers typically form in the final phase of evolution of sedimentary basins. By that time the sediment supply balances out the accommodation, local rivers coalesce into larger rivers and seek pathways to flow out of the basin into areas where accommodation is available. Very often, this is controlled by tectonics controlling sediment supply and accommodation or facilitating opening inter-basinal
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Marine osmium isotope record during the Carnian “pluvial episode” (Late Triassic) in the pelagic Panthalassa Ocean Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-25 Yuki Tomimatsu; Tatsuo Nozaki; Honami Sato; Yutaro Takaya; Jun-Ichi Kimura; Qing Chang; Hiroshi Naraoka; Manuel Rigo; Tetsuji Onoue
The Carnian Pluvial Episode (CPE) was a global environmental change and biotic crisis that occurred during the Carnian (Late Triassic). The climate during the CPE was characterized by a short-lived period of extreme rainfall, and an extinction of marine taxa is known to have occurred during the latest Julian (i.e. early Carnian). Although these events are considered to have been caused by the Wrangellia
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Middle Permian trace fossil assemblages from the Carnarvon Basin of Western Australia: Implications for the evolution of ichnofaunas in wave-dominated siliciclastic shoreface settings across the Permian-Triassic boundary Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-01 Xueqian Feng; Zhong-Qiang Chen; Laishi Zhao; Zhongwu Lan
Guadalupian (middle Permian) ichnoassemblages are described from the Mungadan Sandstone Formation (Kennedy Group), Merlinleigh sub-basin, Carnarvon Basin of Western Australia. In this formation, we recognize five facies (pebbly sandstone, intensely bioturbated sandstone, medium- to coarse-grained cross-stratified sandstone, fine-grained sandstone, and planar laminated siltstone), assigned to two facies
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Constraints on early Earth's water budget from the evolution of the lunar hydrogen cycle Glob. Planet. Change (IF 4.448) Pub Date : 2020-12-01 Yanhao Lin; Wim van Westrenen
During the Hadean, Earth recovered from the Moon-forming giant impact, became covered with liquid water oceans, and witnessed the onset of plate tectonics and life. Quantifying the abundances, distribution, and chemical states of water in the atmosphere, on the surface, and in the interior of the early Earth is essential to constrain the early evolution of System Earth. Assessing these parameters is
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Expression of the early Aptian Oceanic Anoxic Event (OAE) 1a in lacustrine depositional systems of East China Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-08 Xiangyu Zhang; Shoujun Li; Xuxue Wang; Xiuli Zhao; Tiantao Yin
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Resilience of primary and export productivity in a eutrophic ecosystem following the Cretaceous-Paleogene mass extinction Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-08 Yoav O. Rosenberg; Sarit Ashckenazi-Polivoda; Sigal Abramovich; Nicolas Thibault; Shamar Chin; Shimon Feinstein; Yuval Bartov; Alon Amrani
The recovery time of marine productivity following the Cretaceous-Paleogene (KPg) mass extinction varies tremendously with location (hundreds to millions of years), with possible delays in the tropics as compared to higher latitudes. This heterogeneity is based on prevalent oligo- to mesotrophic marine environments. While highly productive eutrophic environments are less prevalent, they play a greater
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Major volcanic eruptions linked to the Late Ordovician mass extinction: Evidence from mercury enrichment and Hg isotopes Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-12 Dongping Hu; Menghan Li; Jiubin Chen; Qingyong Luo; Stephen E. Grasby; Tonggang Zhang; Shengliu Yuan; Yilun Xu; Stanley C. Finney; Lilin Sun; Yanan Shen
The Late Ordovician mass extinction (LOME) was the second most severe Phanerozoic biodiversity crisis. While environmental deterioration and oceanographic changes associated with the Hirnantian glaciation have been frequently invoked as potential extinction drivers, recent evidence for a large igneous province eruption at that time has challenged this prevailing view. As such, the triggering and killing
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Forced or normal regression signals in a lacustrine basin? Insights from 3D stratigraphic forward modeling in the SW Pannonian Basin Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-17 Ádám Kovács; Attila Balázs; Marko Špelić; Orsolya Sztanó
The overall geometry of sedimentary basins is driven by a complex interplay between subsidence, water-level variations, sedimentation rates and basin-margin topography. Seaward movement of the shoreline is driven by either high sediment input or by base-level drop. The influence of the specific driving mechanisms is often overwritten by subsequent burial and compaction effects or it is below the resolution
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Decoupling δ13Ccarb and δ13Corg at the onset of the Ireviken Carbon Isotope Excursion: Δ13C and organic carbon burial (forg) during a Silurian oceanic anoxic event Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-11 Emma R. Hartke; Bradley D. Cramer; Mikael Calner; Michael J. Melchin; Bruce A. Barnett; Stephan C. Oborny; Alyssa M. Bancroft
Paired records of δ13Ccarb and δ13Corg across the Llandovery-Wenlock boundary demonstrate asynchronous behavior during the onset of the Ireviken Biogeochemical Event (IBE). The extremely high-resolution data produced from the Altajme Core, drilled from Gotland, Sweden, capture a negative excursion in δ13Corg during the initiation of the Ireviken Extinction Event (IEE) and prior to the onset of the
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Effect of water on the rheology of the lithospheric mantle in young extensional basin systems as shown by xenoliths from the Carpathian-Pannonian region Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-02 Nóra Liptai; Thomas P. Lange; Levente Patkó; Zsanett Pintér; Márta Berkesi; László E. Aradi; Csaba Szabó; István J. Kovács
Incorporation of hydrogen as structural hydroxyl (commonly referred to as water) in nominally anhydrous mantle minerals is known for the ‘hydrolytic weakening’ effect, which decreases the strength and electrical resistivity of the rock. Recent models have provided means of calculating rheological properties from geochemical data of upper mantle xenoliths. In the Carpathian-Pannonian region, upper mantle
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Smithian and Spathian (Early Triassic) conodonts from Oman and Croatia and their depth habitat revealed Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-26 Yanlong Chen; Michael M. Joachimski; Sylvain Richoz; Leopold Krystyn; Dunja Aljinović; Duje Smirčić; Tea Kolar-Jurkovšek; Xulong Lai; Zhifei Zhang
Conodont ecology of the Early Triassic Smithian–Spathian transition is still poorly understood. Here we use oxygen isotope ratios of monogeneric conodonts from Omani samples to reveal the differences of oxygen isotopic composition between different taxa. Oxygen isotope analyses from Oman reveal that Neogondolella inhabited a deeper part of the water column relative to neospathodids and Icriospathodus
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Towards stratigraphic-thermo-mechanical numerical modelling: Integrated analysis of asymmetric extensional basins Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-18 Attila Balázs; Liviu Matenco; Didier Granjeon; Katharina Alms; Thomas Francois; Orsolya Sztanó
Subsidence and uplift patterns and thermal history of sedimentary basins are controlled by tectonics, mantle dynamics and surface processes, such as erosion, sediment transport and deposition and their links to climatic variations. We use combined thermo-mechanical and stratigraphic numerical modelling techniques to quantify the links between tectonic and surface processes. We aim to assess the thermal
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Influence of Eastern Upwelling systems on marine heatwaves occurrence Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-12 R. Varela; L. Rodríguez-Díaz; M. de Castro; M. Gómez-Gesteira
Marine heatwaves (MHWs) are a central topic of research due to their extensive implications to marine fauna and flora. As far as we know, this is the first study focused on the occurrence of MHWs in the Eastern Boundary Upwelling systems (EBUs). For that purpose, trends in Sea Surface Temperature (SST) and in the number of MHW days were calculated to assess the different occurrence of MHWs nearshore
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The polyphase rifting and inversion of the Danube Basin revised Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-10 Michal Šujan; Samuel Rybár; Michal Kováč; Miroslav Bielik; Dušan Majcin; Jozef Minár; Dušan Plašienka; Petronela Nováková; Júlia Kotulová
To track the evolution and formation of one of the major sub-basins of the Pannonian back-arc basin system, we re-evaluate pre-rift, syn-rift, post-rift, and inversion stages of the Danube Basin. This synthesis builds upon a new compilation of (i) geophysical measurements, (ii) current data about the substratum of the basin, (iii) recent advances in stratigraphic architecture of the basin fill, (iv)
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Last millennium intensification of decadal and interannual river discharge cycles into the Southwestern Atlantic Ocean increases shelf productivity Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-31 Laura Perez; Carolina Crisci; Sebastian Lüning; Michel Michaelovitch de Mahiques; Felipe García-Rodríguez
Large rivers represent transitional environments between the coast and the open ocean which discharge is influenced by both climate and anthropogenic impacts. In general, historical information on river discharges does not extend beyond 100-yr data series. This is the case of the Río de la Plata (RdlP) watershed, which represents a very important geographic region sensitive to El Niño Southern Oscillation
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Integrated bio-chemostratigraphy of Lower and Middle Triassic marine successions at Spiti in the Indian Himalaya: Implications for the Early Triassic nutrient crisis Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-01 Y.D. Sun; S. Richoz; L. Krystyn; S.E. Grasby; Y.L. Chen; D. Banerjee; M.M. Joachimski
In this paper we study the Lilang Super Group in the Spiti area, Indian Himalaya to understand environmental changes in the aftermath of the end-Permian mass extinction. We focus on the Mikin and Kaga Formations, which span the Induan to Ladinian stages of the Lower and Middle Triassic. These strata formed on the southern mid-palaeolatitude margin of East Gondwana and are interpreted as condensed,
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The middle-to-late Holocene relative sea-level history, highstand and levering effect on the east coast of Malay Peninsula Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-06 Yaze Zhang; Yongqiang Zong; Haixian Xiong; Tanghua Li; Shuqing Fu; Guangqing Huang; Zhuo Zheng
This study was conducted to (1) investigate a former mangrove wetland on the east coast of Peninsular Malaysia near Kuantan and produce new sea-level index points (SLIP), and to (2) re-analyzed the modern vegetation and pollen results from a mangrove-swamp transect within the nearby estuary to establish the relationship between vegetation zones and tidal levels for estimating indicative meanings (IM)
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Leaf physiognomy records the Miocene intensification of the South Asia Monsoon Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-03 Harshita Bhatia; Gaurav Srivastava; R.A. Spicer; Alex Farnsworth; T.E.V. Spicer; R.C. Mehrotra; Khum N. Paudayal; Paul Valdes
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Turnover and stability in the deep sea: Benthic foraminifera as tracers of Paleogene global change Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-11 Laia Alegret; Gabriela J. Arreguín-Rodríguez; Carlos A. Trasviña-Moreno; Ellen Thomas
Benthic foraminifera are the most common meiofaunal unicellular deep-sea biota, forming skeletons used as proxies for past climate change. We aim to increase understanding of past non-analog oceans and ecosystems by evaluating deep-sea benthic foraminiferal responses to global environmental changes over latest Cretaceous through Oligocene times (67–23 million years ago). Earth suffered an asteroid
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Integrated astrochronology of the Barremian Stage (Early Cretaceous) and its biostratigraphic subdivisions Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-02 Mathieu Martinez; Roque Aguado; Miguel Company; Jose Sandoval; Luis O'Dogherty
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Assessing anoxia, recovery and carbonate production setback in a hemipelagic Tethyan basin during the Toarcian Oceanic Anoxic Event (Western Carpathians) Glob. Planet. Change (IF 4.448) Pub Date : 2020-11-02 Tamás Müller; Szabina Karancz; Emanuela Mattioli; Rastislav Milovský; József Pálfy; Jan Schlögl; Tomasz Segit; Vladimír Šimo; Adam Tomašových
The chemostratigraphic record of the Toarcian Oceanic Anoxic Event (T-OAE) is generally well documented in epicontinental basins; however, the duration of anoxia and recovery remains poorly constrained in the Tethys Ocean owing to limited stratigraphic resolution of oceanic sections with hiatuses. In this paper, we describe a relatively continuous hemipelagic record in the Central Western Carpathians
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Understanding partitioning of deformation in highly arcuate orogenic systems: Inferences from the evolution of the Serbian Carpathians Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-27 Nemanja Krstekanić; Liviu Matenco; Marinko Toljić; Oleg Mandic; Uros Stojadinovic; Ernst Willingshofer
Highly curved orogens often demonstrate a complex poly-phase tectonic evolution and significant strain partitioning. While the oroclinal bending towards the outer arc is understood to be often driven by rapid slab roll-back, processes driving such bending towards the back-arc domain are less understood. The Serbian segment of the larger, highly bended Carpathians–Balkanides Mountains is one key example
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Holocene and deglaciation hydroclimate changes in northern China as inferred from stalagmite growth frequency Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-19 Yingying Wei; Yanjun Cai; Xing Cheng; Gang Xue; Yanbin Lu; Le Ma; Shouyi Huang; Mei He; Hai Cheng; R. Lawrence Edwards
Precipitation is the most important factor affecting the formation of speleothems in arid and semi-arid areas; therefore, their growth frequency could be a potential indicator of hydroclimate changes in these areas. Here, we present a cumulative growth frequency record over the past 16 ka B.P. (before 1950), as obtained from 58 230Th dates taken from 26 individual stalagmites from Longfeng Cave, Shanxi
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Minimum carbon uptake controls the interannual variability of ecosystem productivity in tropical evergreen forests Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-12 Zhao Li; Anders Ahlström; Feng Tian; Antje Gärtner; Ming Jiang; Jianyang Xia
Tropical evergreen forests contribute an important part to the interannual variability (IAV) of the global terrestrial gross primary productivity (GPP). Due to its year-round growing-season, high minimum carbon uptake (GPPmin) and dry season greening-up, the key processes driving the GPP variability across seasonal to interannual scale are still in debate. Here, we analyzed the time-series of FLUXCOM
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Pliocene and Pleistocene stratigraphic evolution of the western Niger Delta intraslope basins: A record of glacio-eustatic sea-level and basin tectonic forcings Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-20 Kelvin Ikenna Chima; Christian Gorini; Marina Rabineau; Didier Granjeon; Damien Do Couto; Estelle Leroux; Nick Hoggmascall
Although climate proxy (δ18O) across the world ocean basins reveals that orbital forcing significantly controlled the Pliocene and the Pleistocene sediment deposition, and has been demonstrated in seismic and outcrop studies on the continental shelves of many margins, few or no seismic stratigraphic studies have investigated orbital forcing on deep-water sediment records. In this study, we combined
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Reef response to sea-level and environmental changes in the Central South Pacific over the past 6000 years Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-24 N. Hallmann; G. Camoin; A. Eisenhauer; E. Samankassou; C. Vella; A. Botella; G.A. Milne; V. Pothin; P. Dussouillez; J. Fleury; J. Fietzke; T. Goepfert
Geological records of coastal system evolution during past higher and/or rising sea levels provide an important baseline for developing projections regarding the response of modern coastal systems to future sea-level rise. The mid-late Holocene corresponds to the most recent window into natural variability prior to the Anthropocene and involves slow-rate and low-amplitude sea-level changes that were
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A changing Amazon rainforest: Historical trends and future projections under post-Paris climate scenarios Glob. Planet. Change (IF 4.448) Pub Date : 2020-09-25 Sílvia Carvalho; André Oliveira; Jiesper Strandsbjerg Pedersen; Halaze Manhice; Filipe Lisboa; Jérémy Norguet; Fronika de Wit; Filipe Duarte Santos
Despite the progress in sustainable development strategies, the role of the Amazon rainforest as a carbon sink faces increasing disturbances that may have a critical impact on global climate. Understanding the vulnerability of the Amazon rainforest to climate change is a major challenge, considering the complex interaction between human and natural systems. This paper aims, via an interdisciplinary
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A late Jurassic carbon-isotope record from the Qiangtang Basin (Tibet), eastern Tethys, and its palaeoceanographic implications Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-17 Gaojie Li; Haisheng Yi; Guoqing Xia; Hailei Tang; Fan Yi; Michael Wagreich
An Upper Jurassic succession of deep-marine limestones, marls and claystones preserved in the Ambo section of the Qiangtang Basin (Tibet) contains information concerning the response of the eastern Tethys Ocean to multiple carbon cycle perturbations and to palaeoceanographic changes. Three positive δ13C excursions (P-CIE 1–3), dated as latest Callovian, middle Oxfordian and early Late Kimmeridgian
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Terrestrial ecosystem collapse and soil erosion before the end-Permian marine extinction: Organic geochemical evidence from marine and non-marine records Glob. Planet. Change (IF 4.448) Pub Date : 2020-09-25 Raman Kumar Biswas; Kunio Kaiho; Ryosuke Saito; Li Tian; Zhiqiang Shi
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Pelagic Sargassum as an emerging vector of high rate carbonate sediment import to tropical Atlantic coastlines Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-05 Michael A. Salter; Rosa E. Rodríguez-Martínez; Lorenzo Álvarez-Filip; Eric Jordán-Dahlgren; Chris T. Perry
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Significance of basin asymmetry and regional groundwater flow conditions in preliminary geothermal potential assessment – Implications on extensional geothermal plays Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-16 Ádám Tóth; Attila Galsa; Judit Mádl-Szőnyi
Extensional domain type geothermal plays, as fertile targets for future resource development, consist of an orogen and an adjoining sedimentary basin of asymmetric physiographic and geologic setting. Preliminary geothermal potential, i.e. prospective geothermal regions, basin-scale flow patterns, heat transfer processes, temperature distribution and appearance of thermal springs were analyzed systematically
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Persistent oxic deep ocean conditions and frequent volcanic activities during the Frasnian-Famennian transition recorded in South China Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-17 Liyu Zhang; Daizhao Chen; Guodun Kuang; Zenghui Guo; Gongjing Zhang; Xia Wang
The Frasnian-Famennian (FF) transition of Late Devonian was a critical episode in geological history, recording a major mass extinction event. In this study, we focus on an FF succession from a deep marine context in Bancheng, southern Guangxi, South China, to investigate coeval changes in pelagic environments of the Paleo-Tethys Ocean. The studied succession is exclusively composed of bedded cherts
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Ocean-atmosphere interactions over the western South Atlantic during Heinrich stadials Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-17 I.M. Venancio; M.H. Shimizu; T.P. Santos; D.O. Lessa; B.B. Dias; C.M. Chiessi; S. Mulitza; H. Kuhnert; R. Tiedemann; M. Vahlenkamp; T. Bickert; A.L. Belem; G. Sampaio; A.L.S. Albuquerque; C. Nobre
Slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials (HS) caused reductions in cross-equatorial heat transport, southward shifts of the Intertropical Convergence Zone and intensification of precipitation over eastern tropical South America. While these changes are well described, the associated spatial sea surface temperature (SST) patterns are still unclear. Here,
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Global mapping of future glaciovolcanism Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-19 Benjamin Edwards; William Kochtitzky; Sarah Battersby
We created a global database of glacierized volcanoes, using a projection optimized for each volcano, to identify locations where land ice (glaciers and ice sheets) and volcanoes co-exist on Earth. Our spatial database melds the Smithsonian Global Volcanism Database (SGVD) and the Randolph Glacier Inventory 6.0 (RGI). We identified all Holocene volcanoes within the SGVD that have glacier ice within
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Holocene sea level dynamics drive formation of a large atoll island in the central Indian Ocean Glob. Planet. Change (IF 4.448) Pub Date : 2020-10-17 Paul S. Kench; Susan D. Owen; Edward P. Beetham; Thomas Mann; Roger F. McLean; Andrew Ashton
The impact of global environmental change on coral reef islands is uncertain with few studies having resolved the critical controls on island formation and change. Based on detailed, topographic surveys, sediment analysis and radiometric dating, we present a multi-phase model of the formation of a large inhabited reef island in the central Indian Ocean in response to Holocene sea level dynamics and
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