Results 81 to 90 of about 8,820 (215)

Gold mobilization during metamorphic devolatilization of Archean and Paleoproterozoic metavolcanic rocks

, 2020
Volcanic rocks in Archean and Paleoproterozoic greenstone belts are abundant and have been suggested as potential Au source for orogenic Au deposits. The behavior of Au during metamorphism of these rocks is however, poorly known.
Pitcairn, Iain K.,, Kolb, J., Molnár, Ferenc, Patten, Clifford, Guilmette, C., Peillod, Alexandre,, Peillod, A., Peillod, Alexandre, Pitcairn, Iain, Molnár, F., Beaudoin, Georges, Kolb, Jochen, Guilmette, Carl, Patten, C. G. C., Beaudoin, G., Pitcairn, I. K.   +15 more
core   +1 more source

Sources and possible causes of Paleoproterozoic magmatism in the southern part of the Karelian Craton (Baltic Shield)

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
There is an opinion that Paleoproterozoic magmatism in the Karelian craton of the Baltic Shield is linked solely with the influence of mantle plumes.
Наталья Ивановна Кондрашова, Natalia Kondrashova   +1 more
doaj   +1 more source

(Ultra)high‐Pressure Metamorphism in Sedimentary Versus Basaltic Rocks: Insights From a Variscan Mélange in the South Carpathians

Journal of Metamorphic Geology, Volume 44, Issue 8, Page 585-610, September 2026.
ABSTRACT Reconstructing the pressure–temperature–time (P–T–t) evolution of (ultra)high‐pressure rocks is essential for constraining subduction and collisional dynamics. Subduction zones are often investigated using basic eclogites, whereas nonbasic high‐pressure rocks remain comparatively understudied, potentially hindering a comprehensive ...
Otavio S. G. Silva, Bruno V. Ribeiro, Gavril Săbău, Fabricio Caxito, Paulo A. de Paiva‐Silva, Pierre Lanari, George Luvizotto, Mahyra Tedeschi   +7 more
wiley   +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, Pichon, Mélanie, Vidal, Max, Pouclet, André, Ouattara, G., Gumiaux, Charles   +5 more
core   +1 more source

Is the Ordos Block Archean or Paleoproterozoic in age? Implications for the Precambrian evolution of the North China Craton [PDF]

, 2013
The Ordos Block is a large but poorly exposed crustal segment in the western part of the North China Craton. Little is known about its Precambrian basement rocks and their evolution because of an extensive cover by younger sedimentary rocks.
Wan, Yusheng, Wang, Zejiu, Liu, Dunyi, Du, Lilin, Liu, Shoujie, Wilde, Simon, Sun, Liuyi, Xie, Hangqiang, Kröner, Alfred, Yang, Hua, Ma, Mingzhu, Geng, Yuansheng, Dong, Chunyan   +12 more
core   +2 more sources

ARCHEAN AND PALEOPROTEROZOIC HISTORY OF ROCK METAMORPHISM IN THE URALS CRUSTAL SEGMENT

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
In the Urals, Archean and Paleoproterozoic formations were found in several polymetamorphic complexes which crop out as relatively small tectonic blocks (within the first thousands sq. km in area).
Александр Михайлович Пыстин, Юлия Ивановна Пыстина, Alexandr Pystin, Yulia Pystina   +3 more
doaj   +1 more source

Photosynthetic glyceraldehyde 3‐phosphate dehydrogenase B is present in the last common ancestor of Viridiplantae predating the Streptophyta–Chlorophyta split

New Phytologist, Volume 251, Issue 6, Page 3072-3079, September 2026.
Predicted evolutionary history of GAPA (blue squares), CP12 (red circles), and GAPB (represented as a fusion of a blue square and half red circle) across the Viridiplantae.
Alex P. Mann, James E. M. Stach, Maxim V. Kapralov, Patricia E. Lopez‐Calcagno   +3 more
wiley   +1 more source

Fluid Inclusion Characteristics of Auriferous Quartz Veins in Archean and Paleoproterozoic Greenstone Belts of Eastern and Southern Finland

, 2003
Fluid inclusions in auriferous quartz veins in five deposits in the Archean (2.9–2.7 Ga) and Paleoproterozoic (2.0–1.75 Ga) greenstone belts of eastern and southwestern Finland have been characterized on the basis of their composition, reconstructed ...
Poutiainen, Matti, Partamies, Sami
core   +1 more source

Table3_Tectonic Juxtaposition of Two Independent Paleoproterozoic Arcs by Cenozoic Duplexing in the Arun Tectonic Window of the Eastern Nepalese Himalaya.XLSX

, 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 ...
Songjian Ao (7335755), Saunak Bhandari (11138066), Rui Li (4631), Karel Schulmann (2842937), Wenjiao Xiao (2816182), Qigui Mao (11640707), Dongfang Song (7335758), Zhou Tan (223704), Hao Wang (39217)   +8 more
core   +1 more source

Cold deep subduction recorded by remnants of a Paleoproterozoic carbonated slab

Nature Communications, 2018
The onset of modern-style plate tectonics remains under debate. Here, Xu et al. report a cold thermal-gradient recorded in an eclogite xenolith in Paleoproterozoic carbonatite from orogen, and propose that modern-style subduction has operated since at ...
Cheng Xu, Jindřich Kynický, Wenlei Song, Renbiao Tao, Zeng Lü, Yunxiu Li, Yueheng Yang, Miroslav Pohanka, Michaela V. Galiova, Lifei Zhang, Yingwei Fei   +10 more
doaj   +1 more source