Results 191 to 200 of about 58,216 (258)

Sedimentology and geochemistry of Carboniferous-Permian marine-continental transitional shales in the eastern Ordos Basin, North China

, 2021
A continuously cored well covering the Carboniferous-Permian Benxi, Taiyuan, and Shanxi formations in the eastern Ordos Basin provides a rare window into environmental conditions of the marine-continental transitional strata. Integration of petrographic,
Leifu Zhang, D. Dong, Qiu Zhen, Chenjun Wu, Q. Zhang, Yuman Wang, Dexun Liu, Ze Deng, Shangwen Zhou, Songqi Pan   +9 more
semanticscholar   +1 more source

Permian to early Triassic tectono-sedimentary evolution of the Mahu sag, Junggar Basin, western China: sedimentological implications of the transition from rifting to tectonic inversion

, 2021
The Permian to early Triassic terrestrial successions in the Mahu sag constrain the tectonic evolution of northwestern edge of the Junggar basin. This study analyzes the sequence stratigraphy of the Mahu sag in order to understand the interplay between ...
Wenbin Tang, Yuanyuan Zhang, G. Pe‐Piper, D. Piper, Zhaojie Guo, Wei Li   +5 more
semanticscholar   +1 more source

The Permian period

Geological Society Special Publication, 2019
Summary Twelve rocks for which calculated isotopic ages are mutually consistent and for which there is some biostratigraphic control have been used in the construction of a Permian time-scale.
Denys B. Smith
semanticscholar   +1 more source

Initial pulse of Siberian Traps sills as the trigger of the end-Permian mass extinction

Nature Communications, 2017
Mass extinction events are short-lived and characterized by catastrophic biosphere collapse and subsequent reorganization. Their abrupt nature necessitates a similarly short-lived trigger, and large igneous province magmatism is often implicated. However,
S. Burgess, J. Muirhead, S. Bowring
exaly   +2 more sources

Multiple episodes of extensive marine anoxia linked to global warming and continental weathering following the latest Permian mass extinction

Science Advances, 2018
Multiple episodes of extensive oceanic anoxia delayed the marine ecosystem recovery from the latest Permian mass extinction. Explaining the ~5-million-year delay in marine biotic recovery following the latest Permian mass extinction, the largest biotic ...
Fei-fei Zhang, Stephen J Romaniello, Thomas J Algeo   +2 more
exaly   +2 more sources

Permian

Geological Society, London, Memoirs, 1992
Abstract Permian strata in the British Isles crop out mainly in northern and central England but are extensive in the subsurface both on land and in several adjoining offshore areas. Their base is defined as in Smith et al. (1974) and their top is within red beds, overlying the Zechstein evaporites.
D. B. Smith, J. C. M. Taylor, R. S. Arthurton, M. E. Brookfield, K. W. Glennie   +4 more
openaire   +1 more source

Anatexis origin of rare metal/earth pegmatites: Evidences from the Permian pegmatites in the Chinese Altai

, 2020
The petrogenesis of the isolated pegmatites from granites is under debate. In the Chinese Altai, massive isolated pegmatites have been regarded as derivatives of granitic melts, which contradicts to the results of recent studies.
Zheng-hang Lv, Hui Zhang, Yong Tang
semanticscholar   +1 more source

Paleoenvironmental setting, mechanism and consequence of massive organic carbon burial in the Permian Junggar Basin, NW China

Journal of Asian Earth Sciences, 2020
The Junggar Basin in northwestern China is a typical “walled” sedimentary basin that has a prolonged basin evolution history from the Paleozoic to Cenozoic and is rich in petroleum resources. Permian strata reach thousands of meters in thickness and have
Yuanhong Gao, He Huang, Huifei Tao, A. Carroll, J. Qin, Jiquan Chen, Xiaoguang Yuan, Chengshan Wang   +7 more
semanticscholar   +1 more source

Intensified chemical weathering during the Permian-Triassic transition recorded in terrestrial and marine successions

Palaeogeography, Palaeoclimatology, Palaeoecology, 2019
Global warming is inferred to have been one of the main causes of the Permian-Triassic (P-Tr) boundary mass extinction. Although a strong temperature rise in tropical sea-surface temperatures during the latest Permian has been documented, coeval climate ...
Ying Cao, Huyue Song, T. Algeo, Daoliang Chu, Yong Du, L. Tian, Yuhang Wang, J. Tong   +7 more
semanticscholar   +1 more source

A volcanic tuff near the Carboniferous–Permian boundary, Taiyuan Formation, North China: Radioisotopic dating and global correlation

, 2020
A 66 cm thick volcanic ash fall tuff occurring within a thick coal deposit and containing a paleobotanical fossil lagerstatte in the Wuda coal district of North China has been dated as 298.34 ± 0.09 Ma.
M. Schmitz, H. Pfefferkorn, S. Shen, Jia-ling Wang   +3 more
semanticscholar   +1 more source