PALAEOPROTEROZOIC

作品数：25被引量：382H指数：7
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Petrographic and Geochemical Characteristics of the Pouni Palaeoproterozoic Formations North of the Léo Square Degree (Burkina Faso, West Africa)
《Open Journal of Geology》2024年第1期126-141,共16页Adama Ouédraogo Yaméogo Pascal Ouiya Hubert Gounwendmanaghré Zongo Omar Akonyiré Abraham Seydoux Traoré Saga Sawadogo Séta Naba 
The Pouni area is made up of basalts belonging to the Boromo belt, lamprophyres and granitoids. These geological formations are similar to geological formations of the same type in other regions of the Palaeoproterozo...
关键词：Burkina Faso Dori Man/Léo Shield PETROGRAPHY Geochemistry Partial Melting Geotectonic Context 
Structural and tectonothermal evolution of the ultrahigh-temperature Bakhuis Granulite Belt,Guiana Shield,Surinam:Palaeoproterozoic to recent
《Geoscience Frontiers》2021年第2期677-692,共16页Frank F.Beunk Emond W.F.de Roever Keewook Yi Fraukje M.Brouwer 
FFB and EWFdR are indebted to the Dutch Dr.Schürmann Foundation(SF)for Precambrian research(www.dr-schuermannfonds.nl)for generous support for all field work since 2005,in particular grant numbers 86/2012 and 100/2014 for the present study;The SF also funded SHRIMP analyses by Keewook Yi(KBSI,Korea)and LA-ICP-MS analyses at Utrecht University and Münster University(Germany),for zircon U–Th–Pb geochronology.
We constrain the multistage tectonic evolution of the Palaeoproterozoic UHT metamorphic(P=0.9–1.0 GPa,T>1000℃,t=2088–2031 Ma)Bakhuis Granulite Belt(BGB)in Surinam on the Guiana Shield,using large-to small-scale str...
关键词：Bakhuis granulite belt Guiana shield Transamazonian orogeny UHT metamorphism TECTONICS P-T-t evolution 
New U-Pb-Hf zircon isotope data for the Paleoproterozoic Ubendian belt in the Chimala area,SW Tanzania被引量：2
《Geoscience Frontiers》2019年第6期1993-2006,共14页Robert J.Thomas Joachim Jacobs Marlina A.Elburg Abdul Mruma Godson Kamihanda Anthony Kankila Alex Masanja Hamisi Saidi 
supported by the research funding agencies of Denmark,Iceland,Norway and Sweden,and the Swedish Museum of Natural History;funded by an NRF-NEP grant(No.93208)
We present new U-Pb and Hf zircon isotope data on a suite of granitoids from a hitherto unstudied area of the Palaeoproterozoic Lupa terrane of the Ubendian belt in SW Tanzania.The major part of the area comprises a s...
关键词：Ceochronology Tanzania Ubendian PALAEOPROTEROZOIC Mesoprorerozoic 
Petrogenesis of siliceous high-Mg series:Evidence from Early Paleoproterozoic mafic volcanic rocks of the Vodlozero Domain,Fennoscandian Shield
《Geoscience Frontiers》2018年第1期207-221,共15页M.Bogina V.Zlobin S.Svetov E.Sharkov A.Chistyakov 
supported by the Russian Foundation for Basic Research (Project Nos.16-05-00708 and 15-05-01214)
Compositional peculiarities of the siliceous high-Mg series(SHMS)rocks formed at the Archean-Paleoproterozoic boundary as a function of plume activity are discussed using example of Early Paleoproterozoic mafic volcan...
关键词：EARLY PALAEOPROTEROZOIC Siliceous high-magnesian SERIES (SHMS) rocks Sanukitoids MANTLE plume Depleted MANTLE Crustal contamination 
Geochemistry of Palaeoproterozoic Rocks of Aravalli Supergroup: Implications for Weathering History and Depositional Sequence
《International Journal of Geosciences》2017年第10期1278-1299,共22页Pavanesh K. Singh M. Shamim Khan 
The Paleoproterozoic Aravalli Supregroup of rocks, hosted in Aravalli Craton of NW shield, is deposited in shallow and deep water conditions. The major lithologies are phyllites and quartzites with significant compone...
关键词：Clastic GEOCHEMISTRY Aravalli Supergroup RAJASTHAN Palaeoweathering Indian SHIELD 
The response of stromatolites to seismic shocks: Tomboliths from the Palaeoproterozoic Chaibasa Formation,E India: Discussion and liquefaction basics被引量：3
《Journal of Palaeogeography》2017年第3期224-234,共11页G.Shanmugam 
This discussion of a paper by Van Loon et al.（2016）, published in the Journal of Palaeogeography（2016, 5（4）, 381e390）, is aimed at illustrating that there are fundamental deficiencies, which include（1）incomple...
关键词：Stromatolitic bioclasts Seismic shocks Soft-sediment deformation structures（SSDS） Palaeoproterozoic Chaibasa Formation Singhbhum Craton Eastern India 
“The response of stromatolites to seismic shocks: Tomboliths from the Palaeoproterozoic Chaibasa Formation,E India”: Reply被引量：1
《Journal of Palaeogeography》2017年第3期235-241,共7页A.J. (Tom) van Loon Rajat Mazumder Shuvabrata De 
Our contribution about a newly recognized sedimentological feature, which we called tombolith,has raised some comments on the etymology of the term, the assumed lack of field data, the usage of a term that has a speci...
关键词：Stromatolites Seismic shocks Palaeoproterozoic Singhbhum Craton Tomboliths India 
The response of stromatolites to seismic shocks： Tomboliths from the Palaeoproterozoic Chaibasa Formation, E India被引量：5
《Journal of Palaeogeography》2016年第4期381-390,共10页A.J. (Tom) van Loon Rajat Mazumder Shuvabrata De 
project was supported by the Foundation Dr Schurmannfonds,grants no.34/2006 and 57/2009,67/2010 and 82/2012;the DST and the Department of Geology,Calcutta University for financial support and infrastructural support
It is demonstrated here for the first time how Palaeoproterozoic stromatolites survived seismic disturbance of their substrate. The stromatolites under study could have been cyanobacteria or any other photo-autotrophi...
关键词：STROMATOLITES Seismic shocks Soft-sediment deformation structures Pataeoproterozoic Singhbhum craton Tombotiths INDIA 
Besshi-type mineral systems in the Palaeoproterozoic Bryah Rift-Basin, Capricorn Orogen, Western Australia： Implications for tectonic setting and geodynamic evolution被引量：3
《Geoscience Frontiers》2016年第3期345-357,共13页Franco Pirajno Yanjing Chen Nuo Li Chao Li Limin Zhou 
In this contribution we use VMS mineral systems in the Bryah rift-basin to constrain the tectonic setting of the widespread mafic and ultramafic magmatism that characterises the rift-basin in question.Two distinct,but...
关键词：Bryah rift-basin DeGrussa VMS Narracoota and Karalundi Formations Besshi-type deposit Geodynamic model 
Neoarchaean-Palaeoproterozoic Mafic Dyke Swarms from the Singhbhum Granite Complex,Singhbhum Craton,Eastern India:Implications for Identification of Large Igneous Provinces and Their Possible Continuation on Other Formerly Adjacent Crustal Blocks
《Acta Geologica Sinica(English Edition)》2016年第S1期17-18,共2页Rajesh K.Srivastava Ulf Soderlund Richard E.Ernst Sisir K.Mondal Amiya K.Samal 
The Singhbhum craton of the eastern India consists of the Singhbhum Granite Complex(SGC)and the Chotanagpur Gneissic Complex(CGC)separated by the Singhbhum Mobile Belt(SMB).The CGC is intruded by Mesoproterozoic as we...
关键词：In Implications for Identification of Large Igneous Provinces and Their Possible Continuation on Other Formerly Adjacent Crustal Blocks Neoarchaean-Palaeoproterozoic Mafic Dyke Swarms from the Singhbhum Granite Complex Eastern India 
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