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Tonian juvenile arc crust provenance recorded in the Paraná Basin, Western Gondwana proto-Andean margin Precambrian. Res. (IF 3.8) Pub Date : 2024-03-13 R. Henrique-Pinto, M.A.S. Basei, P.R. Santos, A.R. Saad, C.R. Passarelli, C.A. Cingolani, E.J. Milani
A provenance study through petrography, whole-rock geochemistry, and zircon U-Pb-Th and Lu-Hf systematics suggests that the lowermost strata of the Paraná Basin (460–380 Ma) record a recycled orogen provenance with mixing trend between mature polycyclic quartzose detritus and mafic/intermediate contributions. Sources with felsic compositions are indicated by the Lower Paraná Group, as it is suggested
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Non-zero I/(Ca + Mg) recorded in Archean and Paleoproterozoic shallow marine Ca-carbonate sediments Precambrian. Res. (IF 3.8) Pub Date : 2024-03-13 Hao Fang, Philip Fralick, Brittany Ramsay, Dongjie Tang, Robert Riding
Marine oxygenation during the Archean and Paleoproterozoic is poorly constrained. Iodine in carbonate is a possible oxygen indicator. We obtained molar ratios of iodine to calcium-magnesium [I/(Ca + Mg)] for 2.93–2.31 Ga from shallow marine Ca-carbonate (limestone, dolostone) platform sediments at several locations in the southern Superior Province in Canada and the USA. Maximum I/(Ca + Mg) ratios
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Metamorphic and deformational characteristics recorded by Langzishan Barrovian series rocks within the Jiao-Liao-Ji Orogenic Belt, North China Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-03-13 Fei Wen, Mingguo Zhai, Zhonghua Tian, Ping-hua Liu, Wei Wang, Lei Zou
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Subsurface distribution of granites and greenstones in the Paleoarchean East Pilbara Terrane from 3-D gravity inversion Precambrian. Res. (IF 3.8) Pub Date : 2024-03-11 Nathan Hayward, Andrew J. Calvert, Huaiyu Yuan, Klaus Gessner, Michael P. Doublier
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The nature of Neoproterozoic magmatism in the northeastern Yangtze Craton: Implications for breakup of Rodinia supercontinent Precambrian. Res. (IF 3.8) Pub Date : 2024-03-10 Xiaoyu Yuan, Manlan Niu, Qianru Cai, Guang Zhu
Rocks recording Neoproterozoic geological events related to the Precambrian supercontinent cycle are widely distributed in the Yangtze Craton, and can be used to investigate the evolution of the craton in the context of supercontinent assembly-breakup. However, the paucity of systematic research into Neoproterozoic magmatism and sedimentation in the northeastern Yangtze Craton has hindered our understanding
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Paleomagnetism of the Rio Perdido mafic dike swarm (1110 Ma) and the paleogeography of Amazonia and its role for supercontinents Rodinia and Gondwana Precambrian. Res. (IF 3.8) Pub Date : 2024-03-07 Manoel S. D'Agrella-Filho, Ualisson D. Bellon, Bruno V. Ribeiro, Wilson Teixeira, Ricardo I.F. Trindade, Amarildo S. Ruiz
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Mesoarchean–Neoarchean coupled crust–mantle differentiation followed by gravity-driven lithospheric delamination and subduction initiation in the North China Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-03-07 Jianhui Liu, Fulai Liu, Zhengjiang Ding, Yuanshuo Li, Wei Jin, Zhonghua Tian
The geodynamic regime that formed Archean silicic continental crust is unclear. The episodic Archean TTGs (tonalite–trondhjemite–granodiorite rocks) and associated granitoids, with emplacement ages of . 2.9, 2.7, and 2.5 Ga, occurred in the Jiaobei Terrane, North China Craton (NCC), provide a continuous record of the formation of the Mesoarchean–Neoarchean silicic continental crust. To investigate
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Detrital zircon U-Pb ages and Hf isotopes of quartzites from Southern Granulite Terrane, India: Implications for the Precambrian crustal evolution and paleogeography Precambrian. Res. (IF 3.8) Pub Date : 2024-03-07 J.K Tomson, J. Amal Dev
Tectonic evolution of Southern Granulite Terrane (SGT) of south India and its relationship with adjacent continental fragments in the context of supercontinent assembly/dispersal models has been a topic of debate. This is primarily due to the lack of robust zircon U-Pb and Hf isotopic data from different crustal blocks in SGT and its correlation with other terranes. The present study attempts to address
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Metamorphic P–T paths and zircon U–Pb ages of Neoarchean ultrahigh-temperature migmatitic granulites from the Qingyuan terrane, North China Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-03-07 Runze Cui, Chunjing Wei, Zhanzhan Duan
Like many other Archean cratons, the Qingyuan terrane from North Liaoning, North China Craton, preserves the dome-and-keel structures that comprise granitoid gneiss domes and supracrustal belts and rafts of various scale. The supracrustal rocks are mostly metamorphosed under amphibolite to granulite-facies in the late Neoarchean time, but the metamorphic evolution of supracrustal granulites and their
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Rhyacian-Orosirian transitional arc-collisional magmatism in the Archean Piedade Microcontinent, southern São Francisco Paleocontinent, Brazil Precambrian. Res. (IF 3.8) Pub Date : 2024-03-07 Mariana Carvalho, Henrique Bruno, Samuel Bersan, Craig Storey, Catherine Mottram, Glenn Chapman, Mike Fowler, Claudio Valeriano, Cristiano Lana, Carla Neto, Monica Heilbron
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Continental subduction in Paleoproterozoic: Insights from ∼ 1.9 Ga nepheline syenite in the North China craton Precambrian. Res. (IF 3.8) Pub Date : 2024-03-05 Jian-Li Kang, Peng Peng, Huichu Wang, Xu Liu, Zhibin Xiao, Xinping Wang, Jiahui Liu, Chong Wang
Subduction of continent is known as a feature of modern plate tectonics, and it is still unclear whether such a process also occurred in the early Precambrian. Despite of ultra-high pressure metamorphism of terrestrial rocks as a proxy of continental subduction, magmatism produced during continental subduction is also a potential alternative. The North China craton is well-known for the occurrence
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Linked evolution and in situ growth of the Wabigoon superterrane, Superior Craton: evidence from zircon U-Pb isotopes and whole-rock geochemistry Precambrian. Res. (IF 3.8) Pub Date : 2024-03-03 Katarina E. Bjorkman, Yongjun Lu, T. Campbell McCuaig, Anthony I.S. Kemp, Pete Hollings
Archaean crustal growth models remain contentious. Isotopically distinct crustal domains in the Superior Craton have been interpreted as exotic terranes, which has bolstered models of Archaean subduction-accretion. However, new geochemistry and geochronology of 3.0-2.7 Ga felsic igneous rocks across the Wabigoon superterrane, Superior Craton, together with a new stratigraphic synthesis, point to a
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The passive margin of the southern São Francisco paleocontinent, metamorphic record and implications for the assembly of West Gondwana: Evidence from the Lima Duarte Nappe, Ribeira Orogen (SE Brazil) Precambrian. Res. (IF 3.8) Pub Date : 2024-02-28 Brenda C. Rocha, Mario C. Campos Neto, Caue R. Cioffi, Alice Westin, Adriana Alves, Claudio A. Salazar-Mora, Marcos Egydio-Silva, Renato Moraes, Sara dos S. Souza, Victor C. Maurer
In this contribution, we report new (pressure–temperature) and U-Pb zircon geochronological data from the Lima Duarte Nappe and basement rocks from the Mantiqueira Complex, Central Ribeira Orogen, southeastern Brazil, highlighting their relevance to the understanding of the West Gondwana assembly. The lower metasedimentary sequence of the Lima Duarte Nappe records a passive margin environment, with
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A uniform basement: Implications for the tectonics of Beishan Orogenic Belt in the southern Central Asian Orogenic Belt Precambrian. Res. (IF 3.8) Pub Date : 2024-02-28 Zhenyi Wang, Jin Zhang, Chunjiao Wu, Junfeng Qu, Beihang Zhang, Heng Zhao, Yiping Zhang, Yaqi Yang
The orogen is a significant window for studying the history and architecture of Earth; its architecture involves many significant issues. Currently, research on the architecture of orogenic belts mainly focuses on the process of orogeny, and few studies focus on the tectonics before the orogeny, which somewhat constrains orogen evolution. The nature of the basement(s) of microcontinents in the Beishan
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High resolution strontium isotope data from Nama Group, South Africa, constrain global stratigraphic relationships in the terminal Ediacaran Precambrian. Res. (IF 3.8) Pub Date : 2024-02-24 Mcdonald T. Mtonda, Petrus Le Roux, Wendy L. Taylor, Aidan Wilton, Rosalie Tostevin
The Ediacaran was a pivotal period, during which the first metazoans emerged and then experienced several biotic turnover events. At the same time, the oceans were undergoing large-scale geochemical changes, including oscillating redox conditions and nutrient fluxes. Understanding global patterns of biotic change during this interval, and any environmental drivers, is limited by our ability to correlate
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Mafic to intermediate volcanic rocks of the Blake River Group, Abitibi greenstone belt, Canada: Geochemistry, petrogenesis and relation with VMS deposits Precambrian. Res. (IF 3.8) Pub Date : 2024-02-21 Octavio Vite-Sánchez, Pierre-Simon Ross, Patrick Mercier-Langevin
Volcanogenic massive sulfide (VMS) deposits, prevalent since the Archean, constitute a well-explored ore deposit type. Nonetheless, the factors contributing to variations in fertility among volcanic centers, assemblages within greenstone belts, or entire greenstone belts remain unclear. For instance, the Blake River Group (BRG) of Ontario and Quebec, Canada, hosts almost half of the total VMS tonnage
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Constraints on the source and petrogenesis of early Ediacaran shoshonitic mafic magmatism and high-K calc-alkaline granitoids in the Sergipano Orogenic System, Borborema Province, Brazil Precambrian. Res. (IF 3.8) Pub Date : 2024-02-20 Fábio Santos Pereira, Jean-Michel Lafon, Maria de Lourdes da Silva Rosa, Herbet Conceição, Anelise Losangela Bertotti, João Marinho Milhomem Neto, Cristiano Lana, Edinei Koester
The early Ediacaran Capela pluton (ca. 630 Ma) is intruded into the metasedimentary succession of the Sergipano Orogenic System along the oriental segment of the Macururé Domain, southeastern Borborema Province, NE Brazil. This body is an uncommon example of mantle-derived shoshonitic mafic rocks associated with high-K calc-alkaline granitoids emplaced in a pre- to early-collisional context. Here,
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Depositional age and provenance of metasedimentary rocks from the Hengshan Complex, North China Craton: Implications for the late Neoarchean to early Paleoproterozoic tectonic setting of the Trans-North China Orogen Precambrian. Res. (IF 3.8) Pub Date : 2024-02-19 Yasin Rahim, Qiugen Li, Pengyue Hu, Shansong Gao, Hongying Li, Xiao Huang, Jintang Zuo
The Late Neoarchean to Early Paleoproterozoic Zhujiafang supracrustal assemblage is comprised of banded iron formations (BIF) interlayered with amphibolites, schist, felsic gneisses, and quartzite, intruded by mafic dykes and granitic intrusions or veins. Whole-rock geochemical and Nd isotopic and zircon U–Pb-Hf isotopic studies were conducted on the metasedimentary rocks from the Hengshan Complex
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Linking the Paleoproterozoic tectono-magmatic lull to the Archean supercratons: Geochemical insights from Paleoproterozoic rocks in the North China craton Precambrian. Res. (IF 3.8) Pub Date : 2024-02-19 Zhen-Xin Li, Shao-Bing Zhang, Yong-Fei Zheng, Ke Su, Liang Zhang
A tectono-magmatic lull (TML) in the early Paleoproterozoic is indicated by the global geological record. However, the cause of the TML is still unclear. We have investigated a suite of amphibolites, dioritic dikes, and granitoids within this age range from the Taihua Complex in the southern part of the North China Craton. The amphibolites with protolith ages of ca. 2.34 Ga show arc-like trace element
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Precambrian basement rocks of the southernmost tip of the Paraná basin (Northern Uruguay): Petrologic assessment from deep borehole data Precambrian. Res. (IF 3.8) Pub Date : 2024-02-19 Elena Peel, Rossana Muzio, Santiago Fort, Lucía Olivera
This work presents a comprehensive study of the basement rocks at the southernmost extremity of the Paleo- to Mesozoic Paraná Basin in Uruguay. It explores the nature and boundaries of the underlying Piedra Alta and Nico Pérez tectonostratigraphic terranes, which form part of the Rio de la Plata Craton. This research integrates gravimetric information with petrographic, geochemical, and isotopic data
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Northwestward migration of siliciclastic sedimentation during late Tonian to Cambrian: Implications for tectonic evolution of the South China Block Precambrian. Res. (IF 3.8) Pub Date : 2024-02-18 Yang Tian, Erkun Xue, Wei Wang, Zhijun Niu, Bing Tu, Lingzhan Wang, Ziqi Wang, Fang Song, Yaoyan He
The late Tonian to Cambrian sedimentary sequences in the Xiang-Gui-Yue (XGY) Basin across the potential suture zone between the Yangtze and Cathaysia blocks preserves invaluable information on the geological evolution of the South China Block, while the sedimentary provenance is not well constrained and tectonic affinity of the basin is still highly controversial. This study presents systematic provenance
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Xenocrystic zircons from mafic volcanic rocks in the Bikou Terrane: A window to trace the Paleoarchean to Mesoproterozoic crustal evolution of the northwestern Yangtze Block, South China Precambrian. Res. (IF 3.8) Pub Date : 2024-02-17 Bo Hui, Yunpeng Dong, Hongjun Qu, Shengsi Sun, Franz Neubauer, Feifei Zhang, Rutao Zang, Shuxuan Yan, Guiyun Wang
The early crustal properties of the northwestern Yangtze domain are a crucial puzzle piece in elucidating the Archean to Mesoproterozoic crustal evolution of the Yangtze Block. However, related comprehension remains constrained by the scarcity of surface exposures. The accidental discovery of xenocrystic zircons in the Bikou Terrane offers valuable insights into the information of the deep crust in
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Carbonaceous matter in ∼ 3.5 Ga black bedded barite from the Dresser Formation (Pilbara Craton, Western Australia) – Insights into organic cycling on the juvenile Earth Precambrian. Res. (IF 3.8) Pub Date : 2024-02-17 L. Weimann, M. Reinhardt, J.-P. Duda, H. Mißbach-Karmrodt, H. Drake, J. Schönig, J. Holburg, L.B. Andreas, J. Reitner, M.J. Whitehouse, V. Thiel
Carbonaceous matter (CM) in Archean rocks represents a valuable archive for the reconstruction of early life. Here we investigate the nature of CM preserved in ∼ 3.5 Ga old black bedded barites from the Dresser Formation (Pilbara Carton, Western Australia). Using light microscopy and high-resolution Raman mapping, three populations of CM were recognized: (i) CM at the edges of single growth bands of
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A Paleoproterozoic magmatic flare-up in the Central Domain of the Ketilidian Orogen, South Greenland, and correlations to Canada and Scandinavia Precambrian. Res. (IF 3.8) Pub Date : 2024-02-16 R. Vestergaard, T. Waight, A. Petersson, A.M. Hinchey, M.J. Whitehouse
The Central Domain of the Ketilidian Orogen in South Greenland preserves two magmatic events that provide insight into crustal architecture and represent a major contribution to continental crustal growth in connection with the assembly of the late Paleoproterozoic-Mesoproterozoic supercontinent Columbia/Nuna. This study provides zircon U-Pb geochronology for the western parts of the Central Domain
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A North Caribou superterrane in the Superior craton, North America Precambrian. Res. (IF 3.8) Pub Date : 2024-02-16 David B. Snyder, Phil C. Thurston
Geologists broadly understand the 3-D building of Earth’s continents, but much less so the construction of their ancient, Archean nuclei, the cratons. Definition of terranes that play a pivotal role in reconstructions of Archean tectonic histories must consider the entire subcontinental lithosphere, using relevant observations of structures within both the crust and mantle. Multi-azimuthal receiver
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Modern-style continental tectonics since the early Archean Precambrian. Res. (IF 3.8) Pub Date : 2024-02-16 Alex Copley, Owen M. Weller
We infer the nature of continental tectonics in the Precambrian by combining our understanding of the principles that govern the present-day behaviour of the continents, which over large parts of the Earth’s surface does not resemble plate tectonics, with the available observations from the Precambrian rock record. We show that the hotter mantle potential temperature had little effect on continental
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Re-evaluating the link between the Ellsworth Mountains and East Antarctica in the Neoproterozoic: Implications for the breakup of Rodinia and the existence of Pannotia Precambrian. Res. (IF 3.8) Pub Date : 2024-02-16 Paula Castillo, Fernando Poblete, Rodrigo Fernández, Joaquín Bastías-Silva, C. Mark Fanning
Our current understanding of the Ellsworth Mountains stratigraphy suggests the oldest sedimentary sequence (Heritage Group) was deposited in a Cambrian rift setting. This early Paleozoic age is then used as a key piercing point to help define Cambrian paleogeography for the southern paleo-Pacific margin of Gondwana, which places the Ellsworth Mountains between southern Africa and East Antarctica as
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Detrital zircon ages of the San Miguel marble, Tandilia Belt basement: Constraining the Paleoproterozoic Lomagundi-Jatuli Event in the Río de la Plata Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-02-16 María Florencia Lajoinie, Jonatan Ariel Arnol, Mabel Elena Lanfranchini, Norberto Javier Uriz, Miguel Angelo Stipp Basei, Carlos Alberto Cingolani
The San Miguel marble is one of the only two carbonate rocks identified in the Paleoproterozoic basement of the Tandilia Belt (Argentina) and records the Lomagundi-Jatuli Event. The marble is scarcely limited in time and represents an opportunity to learn more about the geological processes that occurred during the Precambrian in the southern sector of the Río de la Plata Craton and also about the
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Deep magmatic staging chambers for crustal layered mafic intrusions: An example from the Bushveld Complex of southern Africa Precambrian. Res. (IF 3.8) Pub Date : 2024-02-07 Janine Cole, Carol Ann Finn, Susan Jane Webb
The deep mafic magmatic staging chambers of layered mafic intrusions have been conjectured but not imaged. Their existence has long been postulated from geochemical models which require multiple magma injections from staging chambers to account for their multi-scale igneous layering and variations in sources and degrees of crustal contamination. For the Bushveld Complex of southern Africa, the world’s
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A new silicified microfossil assemblage from the Ediacaran Dengying Formation in South Shaanxi, China Precambrian. Res. (IF 3.8) Pub Date : 2024-02-06 Qiaokun Dai, Hong Hua, Jinzhou Luo, Xiao Min, Ziwei Liu, Song Zhang, Meng Gong, Lin Bai
A silicified fossil assemblage is newly recovered from the acid-macerated residuals of the siliceous dolomite in the late Ediacaran upper Dengying Formation, Tudimiao Section, Ningqiang, southern Shaanxi Province, China. It consists of a large number of tubular and spheroidal fossils. Of them, and Sinotubulites can be well identified by the remaining “cone-in-cone” structure or transverse corrugations
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Petrogenesis of the Neoproterozoic Fanjingshan leucogranite associated with W–Sn mineralization: Insights from U–Pb ages and geochemistry Precambrian. Res. (IF 3.8) Pub Date : 2024-02-06 Xiao-Yan Jiang, Jia Guo, Wei-Guang Zhu, Jin-Cheng Luo, Ke-Nan Jiang
The Jiangnan Orogen in China host large volumes of Neoproterozoic igneous rocks and is a well-preserved Neoproterozoic orogenic belt in the South China Block. A series of W–Sn mineralization occurrences and ore deposits are spatially related to Neoproterozoic granites in the orogen. However, the geochronology and petrogenesis of the host Neoproterozoic granites and associated W–Sn mineralization in
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A new salinity-based model for Cryogenian Mn-carbonate deposits Precambrian. Res. (IF 3.8) Pub Date : 2024-02-03 Wei Wei, Wenchao Yu, Yuansheng Du, Thomas J. Algeo, Zhiquan Li, Meng Cheng, Ping Wang, Jingyu Zhang, Leslie J. Robbins, Kurt Konhauser
The genesis of manganese (Mn)-carbonate deposits in the Cryogenian Datangpo Formation (∼662.9–654.5 Ma), Nanhua Basin, South China remains controversial. Here, we combine new proxy data (B/Ga) for watermass salinity with existing data (major- and trace-element concentrations, bulk-rock Sr and Nd isotopes, pyrite sulfur isotopes, and organic and inorganic carbon isotopes) for redox and other environmental
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What induced long-term Hg enrichment in interglacial sediments during the Cryogenian Precambrian. Res. (IF 3.8) Pub Date : 2024-02-03 Ruofei Yang, Haifeng Fan, Hui Zhang, Danish Khan, Hongjie Zhang, Xuewu Fu, Hanjie Wen
An interglacial period existed between the Sturtian (ca. 720 ∼ 660 Ma) and the Marinoan glacial period (ca. 650 ∼ 635 Ma) in the Cryogenian. It is manifested as the Mn-bearing black rock series of the Datangpo Formation in the Nanhua rift basin, South China. In the Datangpo Formation in the Xiangtan area, a continuous mercury-rich stratum nearly 60 m thick was found, while in a previous study of the
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No longer an arc: The Parent Group, a newly recognized component of the 1.88 Ga Circum-Superior large igneous province, Quebec, Canada Precambrian. Res. (IF 3.8) Pub Date : 2024-02-02 Mélanie Beaudette, Pierre-Simon Ross, Donald W. Davis
In northernmost Quebec (Canada), the 1.88 Ga Circum-Superior large igneous province is traditionally thought to be represented only by the Chukotat Group –renowned for its Ni-Cu-Co-PGE ore deposits – within the Southern Domain of the Cape Smith Belt (Ungava Orogen). The Parent Group, just to the north, in the Northern Domain of the Cape Smith Belt, is commonly interpreted as a younger volcanic arc
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Geochemistry and P-T-t evolution of Paleoproterozoic metapelites of the Zhengjiapo BIF-type iron mine, Jiaobei terrane, North China Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-01-30 Yan-Rong Chen, Xu-Ping Li, Zeng-Sheng Li, Da-Peng Li, Fan-Mei Kong, Hans-Peter Schertl, Yan-Jing Chen
Metapelites from the Fenzishan Group of the Zhengjiapo banded iron formation (BIF) iron mine studied have undergone high-pressure and ultrahigh-temperature (UHT) metamorphism. The rocks occur in the Changyi metallogenic belt that belongs to the Jiaobei terrane, Jiao-Liao-Ji Belt, North China Craton. P-T estimates using pseudosection modeling, mineral compositio isopleths and two-feldspar geothermometry
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Ediacaran tectographs from the Itajaí Basin: A cautionary tale from the Precambrian Precambrian. Res. (IF 3.8) Pub Date : 2024-01-30 B. Becker Kerber, G.M.E.M. Prado, N.L. Archilha, L.V. Warren, M.G. Simões, L.M. Lino, F.R. Quiroz-Valle, L.D. Mouro, A. El Albani, A. Mazurier, P.S.G. Paim, F. Chemale, A.L. Zucatti da Rosa, G.E.B. de Barros, J. El Kabouri, M.A.S. Basei
Simple and horizontal trace fossils from the Ediacaran Period (635–538.8 Ma) compose some of the oldest evidence for the presence of metazoans in the Proterozoic fossil record. Unfortunately, various abiotic processes may produce similar structures on sedimentary beds. One of the oldest records of the Ediacaran biota from Western Gondwana is preserved in the Itajaí Basin (SE Brazil), a peripheral foreland
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The Jiamusi Block involved in the East Gondwana’s interior orogeny: Constrained by geochronology of paragneiss from the Mashan Complex Precambrian. Res. (IF 3.8) Pub Date : 2024-01-28 Jiahao Jing, Hao Yang, Qian Liu, Wenchun Ge, Zheng Ji, Yanlong Zhang, Junhui Bi
Tectonic evolution from the breakup of the Rodinia supercontinent to the assembly of the Gondwana megacontinent has been well investigated on major continents/cratons. However, the role of microcontinents during the evolution from Rodinia to Gondwana has been poorly discussed. The Jiamusi Block, an important Precambrian microcontinent in the easternmost Central Asian Orogenic Belt (CAOB), is characterized
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Early Neoarchean alternation of plate subduction and deep mantle upwelling Precambrian. Res. (IF 3.8) Pub Date : 2024-01-28 Wei Wang, Shuwen Liu, Peter A. Cawood, Jiachen Yao, Lei Gao, Rongrong Guo, Fangyang Hu, Denggang Lu, Xin He
How Earth switched from any earlier regimes such as plume-lid tectonics to plate tectonics remains an unresolved issue in Earth sciences. We report early Neoarchean (∼2.77–2.68 Ga) metavolcanic rocks, including older calc-alkaline basaltic-andesitic rocks in the southwest but younger tholeiitic rocks in the northeast, from the Jiaobei terrane of North China Craton. Petrogenetic studies and thermodynamic
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Neoproterozoic-Early Cambrian Northern Chah-Farsakh Cu-Zn VMS-type deposit, Iran: Constraints from geology, geochemistry, fluid inclusions and geodynamic Precambrian. Res. (IF 3.8) Pub Date : 2024-01-23 Maede Khamooshi, Sajjad Maghfouri, Hossein Ali Tajeddin
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Formation of the giant Luiswishi Cu-Co deposit in the Central African Copperbelt by Neoproterozoic syn-sedimentary-diagenetic processes overprinted by Pan-African orogenic mineralization events Precambrian. Res. (IF 3.8) Pub Date : 2024-01-24 Hui-Min Su, Shao-Yong Jiang, Guoxiang Chi, Tao Sheng, Yan-Liang Yin, Tong Liu
The Central African Copperbelt (CACB) hosts the majority of the Co resources in the world, however, whether these Cu-Co deposits were formed during the syn-sedimentary-diagenetic stage or by later hydrothermal processes at the orogenic stage is a matter of debate. The Luiswishi deposit, hosted in the least deformed and metamorphosed host rocks of the Katanga Supergroup within the CACB, was selected
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Silica cementation history of the Ediacara Member (Rawnsley Quartzite, South Australia): Insights from petrographic and in situ oxygen isotopic microanalyses Precambrian. Res. (IF 3.8) Pub Date : 2024-01-20 Silvina Slagter, Lidya G. Tarhan, Tyler B. Blum, Mary L. Droser, John W. Valley
The Ediacara Member of the Rawnsley Quartzite in South Australia is characterized by exceptional preservation of soft-bodied organisms as casts and molds in sandstones. To understand the timing of silica cementation and the relationship between fossilization and the broader diagenetic history of the Ediacara Member, we used a combination of electron backscatter diffraction (EBSD) analyses, cathodoluminescence
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Deciphering the source of banded iron formations in the North China Craton Precambrian. Res. (IF 3.8) Pub Date : 2024-01-20 Changle Wang, Shangjun Xie, Xin Zhang, Xiaoxue Tong, Yang Bai, Zidong Peng, Zhiguo Dong, Lianchang Zhang, Bo Wan
Deciphering the source of banded iron formations (BIFs) is crucial to well understand effects of the dynamic interplay between chemical weathering, tectonism, and volcanism on early ocean composition. So far, it still remains controversial with regard to sources and pathways of iron (Fe) and silicon (Si) within BIFs. In China, BIFs occur throughout mainly within the late Archean supracrustal successions
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Tectono-Stratigraphic reconstruction of the Neoproterozoic Tandilia System: An approach from subsidence analysis Precambrian. Res. (IF 3.8) Pub Date : 2024-01-18 Nicolás Scivetti, María Julia Arrouy, Paulo Marcos, Lucas V. Warren, Lucía E. Gómez-Peral, Andrés Bilmes, Victoria Penzo, Daniel G. Poiré
Several studies on the Neoproterozoic sedimentary cover of the Tandilia System, Argentina, have been carried out in recent decades. The integration of this knowledge and new results have allowed us to carry out an integral analysis including backstripping technique, forward models, sedimentology, and stratigraphy to provide an integral, innovative, and robust subsidence model to classify this Neoproterozoic
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Aspects of the biological carbon cycle in a ca. 3.42-billion-year-old marine ecosystem Precambrian. Res. (IF 3.8) Pub Date : 2024-01-12 M. Reinhardt, V. Thiel, J.-P. Duda, A. Hofmann, D. Bajnai, W. Goetz, A. Pack, J. Reitner, M. Schanofski, J. Schönig, M.J. Whitehouse, H. Drake
Microbial life on Earth was well established in the Paleoarchean, but insight into early ecosystem diversity and thus, the complexity of the early biological carbon cycle is limited. Here we investigated four carbonaceous chert samples from the lower platform facies of the ca. 3.42-billion-year-old Buck Reef Chert, Barberton greenstone belt. The analysis on multiple scales revealed exceptionally well-preserved
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The Precambrian continental record: A window into early Earth environments Precambrian. Res. (IF 3.8) Pub Date : 2024-01-14 Grace I.E. Cosgrove, Luca Colombera, Nigel P. Mountney
The Precambrian was characterized by unique palaeoenvironmental conditions in the Earth’s atmosphere, biosphere and geosphere. This study presents a global quantitative analysis of Precambrian sedimentary successions of aeolian, alluvial, fluvial, lacustrine and glacigenic origins, examined in the broader context of Earth evolution. In the Precambrian, an apparent scarcity of aeolian successions is
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Depositional age and formation conditions of Archean banded iron formations, Bundelkhand Craton, Central India: Geochemistry, neodymium isotopes and U-Pb zircon geochronology Precambrian. Res. (IF 3.8) Pub Date : 2024-01-03 Alexander Slabunov, Kumar Batuk Joshi, Sunil Kumar Singh, Vinai K Rai
In this study, we present major and trace element concentrations, U-Pb zircon geochronology as well as neodymium isotopic compositions of the banded iron formations (BIFs) from the Bundelkhand Craton, India. The study aims to constrain the source characteristics, depositional age and evaluate the paleoenvironmental implications of the Meso-Neoarchean seawater from which the BIF precipitated. The presence
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Stratal evolution and provenance of a precambrian delta in a tectonically active terrane: The lower Signal Hill Group, Avalon Zone, Newfoundland Precambrian. Res. (IF 3.8) Pub Date : 2024-01-05 Santiago. Serna Ortiz, David G. Lowe
Sedimentologic and provenance studies of the syn-orogenic Ediacaran lower Signal Hill Group (Gibbett Hill and Quidi Vidi formations) in the Avalon Peninsula, Newfoundland, Canada, were conducted to test structural and depositional models related to the enigmatic late Ediacaran (ca. 575–550 Ma) Avalon orogenesis. Two facies associations corresponding to delta front and delta plain environments are identified
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Heterogeneous multi-stage accretionary orogenesis — Evidence from the Gunnison block in the Yavapai Province, southwest USA Precambrian. Res. (IF 3.8) Pub Date : 2024-01-05 Ian W. Hillenbrand, Amy K. Gilmer, Michael L. Williams, Karl E. Karlstrom, A. Kate Souders, Michael J. Jercinovic, Jorge Vazquez, Wayne R. Premo
Proterozoic rocks exposed in the southwestern U.S.A. represent one of the best examples of crustal growth by arc-related magmatism and accretionary orogenesis. Within the Southwest the 1.8–1.7 Ga Yavapai Province is widely regarded as a classic example of juvenile arc crust, however 1.8–2.5 Ga inherited zircon and Nd and Hf model ages have been recognized near Gunnison in central Colorado. These data
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Black shale LA-ICP-MS Rb-Sr and monazite SIMS U-Pb geochronology from the Cryogenian successions in the northern Yangtze Block Precambrian. Res. (IF 3.8) Pub Date : 2024-01-02 Zhongwu Lan, Kyle Larson, Rong Cao, Qin Ye, Jun Hu, Guoqiang Tang, Jiao Li, Jinnan Tong
The late Cryogenian (possibly Marinoan-aged) sedimentary successions from the Shennongjia area in the northern margin of the Yangtze Block host important biological evidence for multicellular eukaryotes that have survived the Neoproterozoic glaciation. However, absolute constraints on the depositional age of these fossiliferous successions are lacking. Herein, we present direct dating of black shale
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Estuaries house Earth’s oldest known non-marine eukaryotes Precambrian. Res. (IF 3.8) Pub Date : 2024-01-02 Grace C. Nielson, Eva E. Stüeken, Anthony R. Prave
Some of the oldest postulated non-marine eukaryotic microfossils occur in the 1.1–1.0 Ga Poll a’Mhuillt, Loch na Dal, and Diabaig formations in NW Scotland. These sedimentary strata have traditionally been interpreted as lacustrine. Here we report new trace element, sulfur isotope and metal abundance data and sedimentological observations for the latter two units. The geochemical data imply low salinity
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Late Neoproterozoic tectonic evolution of the northern Tarim block: New insights from integrated detrital zircon and rutile geochronology and trace element geochemistry Precambrian. Res. (IF 3.8) Pub Date : 2024-01-03 Yifan Song, Zhiyuan He, Zhong Li, Johan De Grave, Linglin Zhong, Shida Song, Lirong Dou
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Secular variation in the magnitudes of Phanerozoic and Precambrian weathering Precambrian. Res. (IF 3.8) Pub Date : 2023-12-28 L. Gordon Medaris Jr., Steven G. Driese
An investigation of terrestrial weathering reveals that the magnitude of Phanerozoic weathering was greater than that of Precambrian weathering; specifically, 36 ± 3 % of the labile constituents, SiO2, CaO, Na2O, and K2O, were removed from the protoliths of five modern soils, 37 ± 11 % from four Cretaceous protoliths, 24 ± 4 % from four Cambrian protoliths, 18 ± 2 % from nine Proterozoic protoliths
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Crustal growth in the Archean: Insights from zircon petrochronology of the far-east Yilgarn Craton, Western Australia Precambrian. Res. (IF 3.8) Pub Date : 2024-01-01 Ravi Schreefel, Christopher M. Fisher, Anthony I. S. Kemp, Steffen G. Hagemann, Quentin Masurel, Nicolas Thébaud, Clayton Davy's, Laure A. J. Martin, Jack R. Lowrey, Yongjun Lu, Kevin F. Cassidy
The Archean Yilgarn Craton in Western Australia represents one of the key areas for investigating the mechanisms of crustal growth during Earth’s infancy. The far-eastern margin of the Yilgarn Craton has, however, received limited scientific scrutiny. In this study, in-situ zircon petrochronology (U-Pb, O, and Lu-Hf isotopes) is used to constrain the formation and evolution of the easternmost Yamarna
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Reinitiation of modern-style plate tectonics in the Early Neoproterozoic: Evidence from a ∼930 Ma blueschist-facies terrane in South China Precambrian. Res. (IF 3.8) Pub Date : 2023-12-28 Li-Guang Wu, Yi Chen, Richard M. Palin, Qiu-Li Li, Lei Zhao, Yi-Bing Li, Chao-Feng Li, You-Lian Li, Xian-Hua Li
When and how plate tectonics operated throughout Earth’s history remain a matter of debate. The absence of low-temperature/high-pressure metamorphic rocks during Earth’s middle age (∼1.8–0.8 Ga) leads to some arguing for a temporary shutdown or change of modern-style plate tectonics throughout the Mesoproterozoic and Early Neoproterozoic. Here we report the first discovery of ∼930 Ma blueschist-facies
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Metamorphic P-T-t evolution of ultrahigh-temperature granulite facies metapelites from the Lundazi terrane, Irumide Belt, Eastern Zambia Precambrian. Res. (IF 3.8) Pub Date : 2023-12-26 Kabang'u G. Sakuwaha, Toshiaki Tsunogae
The Lundazi terrane is part of the Mesoproterozoic Irumide Belt of Central Africa which together with other terranes of similar ages are interpreted to record collisional events relation to the amalgamation of the Rodinia Supercontinent. Pelitic granulites from the area preserve evidence of ultrahigh-temperature metamorphism and partial melting with complex textures involving garnet + sillimanite
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New U-Pb and Hf data of the contact region between the Oriental and Cabo Frio terranes, Central Ribeira Belt, Brazil: Implications for the closure of the Ediacaran-Cambrian oceanic space Precambrian. Res. (IF 3.8) Pub Date : 2023-12-27 Natália Cota de Freitas, Monica Heilbron, Julio Almeida, Ivo Dussin, Kathryn Cutts, Manuela Carvalho, Catherine Mottram, Craig Storey, Glenn Chapman
The Ribeira Belt represents a deeply eroded orogen which exposes rocks from the different stages of magmatic arcs and associated metasedimentary basins. This contribution focus on the last collisional episode between the Outer Magmatic Arc System (OMAS) and the Cabo Frio Terrane (Angola craton). The OMAS represents a long-lived magmatic arc that collided against the Inner Magmatic System (IMAS) at
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Neoproterozoic Buchan-type metamorphism of the northwestern margin of the Yangtze Craton and tectonothermal implications Precambrian. Res. (IF 3.8) Pub Date : 2023-12-23 Guo-Dong Wang, Zhen M.G. Li, Qian W.L. Zhang, Juan Wang, Feng-Li Shao
The tectono-metamorphic mechanism along the margins of the Yangtze Craton in the Neoproterozoic has been a controversy for a long time. The Micangshan terrane is located at the northwestern margin of the Yangtze Craton and is mainly composed of Neoproterozoic metamorphosed volcanic and sedimentary sequences. In this work, two representative garnet-bearing two-mica schist samples and two representative