Results 41 to 50 of about 16,157 (210)

Late Paleoproterozoic sedimentary rock-hosted stratiform copper deposits in South China: their possible link to the supercontinent cycle [PDF]

, 2013
published_or_final_versio
Li, J, Qi, L, Zhou, MF
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Geological and isotopic characteristics of granites from the Western Pernambuco-Alagoas Domain: implications for the crustal evolution of the Neoproterozoic Borborema Province

Brazilian Journal of Geology
The Western Pernambuco-Alagoas Domain is a complex tectonic domain of the Southern part of the Neoproterozoic Borborema Province. It borders the Northern margin of São Francisco Craton. U-Pb and Sm-Nd data discussed in this work show that, in the Western
Rodrigo Fabiano da Cruz, Márcio Martins Pimentel, Ana Cláudia de Aguiar Accioly, Joseneusa Brilhante Rodrigues   +3 more
doaj   +1 more source

Evolution of a Paleoproterozoic “weak type” orogeny in the West African Craton (Ivory Coast). [PDF]

, 2009
International audienceThe Paleoproterozoic domain of Ivory Coast lies in the central part of the West African Craton (WAC) and is mainly constituted by TTG, greenstones, supracrustal rocks and leucogranites.
Cagnard, Florence, Gumiaux, Charles, Ouattara, G., Pichon, Mélanie, Pouclet, André, Vidal, Max   +5 more
core   +3 more sources

Tectonic Juxtaposition of Two Independent Paleoproterozoic Arcs by Cenozoic Duplexing in the Arun Tectonic Window of the Eastern Nepalese Himalaya

Frontiers in Earth Science, 2022
The tectonic evolution of the Himalayan orogenic belt before Cenozoic convergence is important to understand its modern structural framework. There is still controversy regarding the tectonic history of the lower Lesser Himalaya Sequence (LHS) in the ...
Rui Li, Rui Li, Rui Li, Rui Li, Songjian Ao, Songjian Ao, Wenjiao Xiao, Wenjiao Xiao, Wenjiao Xiao, Wenjiao Xiao, Karel Schulmann, Qigui Mao, Qigui Mao, Qigui Mao, Qigui Mao, Dongfang Song, Dongfang Song, Zhou Tan, Zhou Tan, Zhou Tan, Zhou Tan, Hao Wang, Hao Wang, Hao Wang, Hao Wang, Saunak Bhandari   +25 more
doaj   +1 more source

Polymict melt‐bearing breccia dikes in the Morokweng impact structure formed by slip‐induced mechanical mixing of pseudotachylite and cataclasite along large‐displacement impact faults

Meteoritics &Planetary Science, EarlyView.
Abstract A core drilled through shocked and faulted Archean granitoid gneisses and dolerites in the eroded peak ring of the 70–80 km diameter Morokweng impact structure intersects multiple centimeter‐ to meter‐wide clastic‐matrix breccias containing a polymict clast population of lithic and mineral clasts and altered, millimeter‐ to centimeter ‐size ...
Roger L. Gibson, S'lindile S. Wela, Leonidas C. Vonopartis, Marco A. G. Andreoli   +3 more
wiley   +1 more source

Congo River sand and the equatorial quartz factory [PDF]

, 2019
A never solved problem in sedimentary petrology is the origin of sandstone consisting exclusively of quartz and most durable heavy minerals. The Congo River offers an excellent test case to investigate under which tectonic, geomorphological, climatic ...
Andò, Sergio, Baudet, Daniel, Botti, Eleonora, De Grave, Johan, Dinis, Pedro, Garzanti, Eduardo, Hahn, Annette, Limonta, Mara, Vermeesch, Pieter, Vezzoli, Giovanni, Yaya, Nicole Kitambala   +10 more
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Revisiting the Pyhäsalmi volcanic complex, western Finland: new insights from volcanic-facies mapping [PDF]

Bulletin of the Geological Society of Finland
The Pyhäsalmi Volcanogenic Massive Sulfide (VMS) deposit, hosted by volcanic rocks of the 1.93–1.91 Ga Vihanti–Pyhäsalmi–Rautalampi belt, is the largest base metal sulfide deposit in Finland (75.7 Mt at 0.9 wt.% Cu, 1.9 wt.% Zn, 0.4 g/t Au, and 14.1 g/t ...
Janne Hokka, Ville Järvinen
doaj   +1 more source

Paleoproterozoic Plate Tectonics Recorded in the Northern Margin Orogen, North China Craton

Geochemistry, Geophysics, Geosystems, 2022
The occurrence of plate tectonic processes on Earth during the Paleoproterozoic is supported by ca. 2.2–1.8 Ga subduction‐collision orogens associated with the assembly of the Columbia‐Nuna supercontinent. Subsequent supercontinent breakup is evidence by
Chen Wu, Guosheng Wang, Zhiguang Zhou, Peter J. Haproff, Andrew V. Zuza, Wenyou Liu   +5 more
doaj   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

Sedimentology, EarlyView.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti, Marta Barbarano, Mara Limonta, Guido Pastore, Pieter Vermeesch, Giovanni Vezzoli   +5 more
wiley   +1 more source

The Earth's Worst Climate Disaster [PDF]

, 2004
Scientists, environmentalists, and the wiser members of the political class worry today about global climate change. Will rising tides plunge Tokyo, London, and New York beneath the ocean’s waves?
Kirschvink, Joseph L., Kopp, Robert E.
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