Mineralogy and geochemistry of the Middle Permian Pingdiquan Formation black shales on the eastern margin of the Junggar Basin, north‐west China: Implications for palaeoenvironmental and organic matter accumulation analyses

2022 ◽  
Author(s):  
Jianke Bai ◽  
Shaohua Zhang ◽  
Chiyang Liu ◽  
Langbo Jia ◽  
Keyong Luo ◽  
...  
Keyword(s):  
Organic Matter ◽  
Junggar Basin ◽  
Black Shales ◽  
Middle Permian ◽  
West China ◽  
North West ◽  
Eastern Margin ◽  
Organic Matter Accumulation

scholarly journals Paleoenvironment and Organic Matter Accumulation Mechanism of Marine–Continental Transitional Shales: Outcrop Characterizations of the Carboniferous–Permian Strata, Ordos Basin, North China

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 7445
Author(s):  
Leifu Zhang ◽  
Qun Zhao ◽  
Sizhong Peng ◽  
Zhen Qiu ◽  
Congjun Feng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Ordos Basin ◽  
Black Shales ◽  
Lower Permian ◽  
High Deposition Rate ◽  
Organic Matter Accumulation ◽  
Accumulation Mechanism ◽  
Transitional Environment ◽  
Geochemical Analyses ◽  
Benxi Formation

In the Carboniferous–Permian period, several organic-rich black shales were deposited in a marine–continental transitional environment in the Linfen area on the eastern margin of the Ordos Basin. Integrated sedimentological and organic geochemical analyses are performed on an outcrop in order to clarify the relationship between paleoenvironment and organic matter accumulation. The results of this study show that the marine–continental transitional strata of the Upper Carboniferous Benxi Formation to Lower Permian Taiyuan and Shanxi Formation exposed in the Linfen area are composed of sandstone, shale, coal, and limestone. Total organic carbon (TOC) contents of the studied samples were mainly distributed in the range of 0.59%–35.4%, with an average of 7.32%. From Benxi Formation to Shanxi formation, the humidity gradually increased, and the climate gradually changed from hot and humid to warm and humid during Carboniferous to Permian. The deposition of the Shanxi Formation ended with the climate returning to hot and humid, having an oxic-suboxic conditions and a high paleoproductivity. Paleoredox conditions and paleoproductivity are the two vital factors controlling the formation of organic matter in black shales. The transitional environment characterized by oxic-suboxic, relatively high deposition rate, and various source of organic matter, although different from the marine environment, provides a good material basis for the deposition of organic-rich shales.

A new Xinjiangchelyid turtle (Testudines, Eucryptodira) from the Jurassic Qigu Formation of the southern Junggar Basin, Xinjiang, north-west China

Palaeontology ◽  
2004 ◽  
Vol 47 (5) ◽  
pp. 1267-1299 ◽  
Author(s):  
Andreas T. Matzke ◽  
Michael W. Maisch ◽  
Sun Ge ◽  
Hans-U. Pfretzschner ◽  
Henrik Stohr
Keyword(s):  
Junggar Basin ◽  
West China ◽  
North West

A new dsungaripteroid pterosaur from the Lower Cretaceous of the southern Junggar Basin, north-west China

2004 ◽  
Vol 25 (5) ◽  
pp. 625-634 ◽  
Author(s):  
Michael W. Maisch ◽  
Andreas T. Matzke ◽  
Ge Sun
Keyword(s):  
Lower Cretaceous ◽  
Junggar Basin ◽  
West China ◽  
North West
Sign in / Sign up

Export Citation Format

Share Document