Results 81 to 90 of about 3,536 (247)

Towards an improved understanding of Ca–Mg carbonates with nonplanar surfaces: An experimental approach

Sedimentology, Volume 72, Issue 1, Page 100-131, January 2025.
ABSTRACT Saddle dolomite is a Ca–Mg carbonate characterized by curved crystal faces, curved cleavage and sweeping extinction under cross‐polarized light. Saddle dolomite and, generally, Ca–Mg carbonates with curved crystal faces, are often assigned to the burial (hydrothermal) realm and serve as proxy archives for hydrogeochemical processes in ...
Yi‐Fan Zhang, Mathias Mueller, René Hoffmann, Sylvia Riechelmann, Sumit Chakraborty, Stephen E. Kaczmarek, Christopher Beyer, Adrian Immenhauser   +7 more
wiley   +1 more source

Enrichment Mechanism of the Organic‐Rich Shale in Ediacaran Doushantuo Formation in Western Sichuan Basin, South China

Geofluids, Volume 2025, Issue 1, 2025.
The Ediacaran Doushantuo Formation in South China has been increasingly recognized as a significant potential source rock for hydrocarbon reservoirs, particularly in relation to the overlying Dengying Formation. This study conducts a comprehensive geochemical analysis of the organic‐rich shale from the Ebian‐Xianfeng section within the Sichuan Basin ...
Bokai Dai, Xingzhi Ma, Fan Yang
wiley   +1 more source

The strata and palaeo-geomorphology framework at the end of neoproterozoic and development mode of source rocks at the beginning of Cambrian in Tarim Basin, China

Journal of Natural Gas Geoscience, 2017
Referred to the new recognition from petroleum exploration of the Sinian to Cambrian in South China, it could be considered that the distribution of the early Cambrian source rocks was controlled by the palaeo-geomorphology at the end of Neoproterozoic ...
Xin Yang, Huili Li, Yong Yue, Shilin Liu, Jianjiao Li, Ping Xiong   +5 more
doaj   +1 more source

Height Propagation Law and Controlling Strategies of Acid Fractures in Carbonate Gas Reservoirs With Bottom Water Layer Under Different Stress Profiles

Geofluids, Volume 2025, Issue 1, 2025.
Acid fracturing is currently employed to develop the carbonate gas reservoir in the second section of the Dengying Formation at the Anyue Gas Field, Sichuan Basin. However, improper acid‐fracturing operational parameters pose a risk of fracture communication with the bottom water layer, leading to increased water production and a significant decline in
Jian Yang, Weihua Chen, Zixi Jiao, Jiexiao Ye, Song Li, Qiuyun Hu, Haiyan Zhu, Zhaopeng Zhang, Pramita Mishra   +8 more
wiley   +1 more source

Geochemical Constraints on the Generation of Coalbed Methane in the Weizhou Area, South‐Central Ningxia, NW China: Insights From Stable Isotopes and Organic Petrology

Geofluids, Volume 2025, Issue 1, 2025.
Amid growing global clean energy demand, coalbed methane (CBM) in the coal‐rich Weizhou area holds great development value. This study explores Weizhou CBM′s geochemical traits and genesis via analyzing gas compositions (Shanxi and Taiyuan Formations), stable isotopic distributions (δ13C1, δD, δ13CO2, and δ15N), and their burial depth variations ...
Wei He, Kai Hu, Jian Cao, Suping Yao, Chao Zhang, Guobin Niu, Feilong Yu, Timothy S. Collett   +7 more
wiley   +1 more source

Phytoplankton dynamics from the Cambrian Explosion to the onset of the Great Ordovician Biodiversification Event: a review of Cambrian acritarch diversity [PDF]

, 2015
Most early Palaeozoic acritarchs are thought to represent a part of the marine phytoplankton and so constituted a significant element at the base of the marine trophic chain during the ‘Cambrian Explosion’ and the subsequent ‘Great Ordovician ...
Molyneux, Stewart G., Monnet, Claude, Nowak, Hendrik, Servais, Thomas, Vandenbroucke, Thijs R.A.   +4 more
core   +3 more sources

Tectonic Fracture Characterization and Stress Analysis in Complex Fault Block Formations: A Case Study in the Second Member of Dengying Formation in Central Sichuan

Geofluids, Volume 2025, Issue 1, 2025.
The Dengying Formation within Pengtan 1 well area in the Sichuan Basin is a vital gas reservoir for exploration and development. The reservoir is situated in a complex fault block structure characterized by multistage fault evolution, leading to a complicated distribution of tectonic fractures crucial for the accumulation and migration of oil and gas ...
Yu Fan, Jianhua Guo, Xu Yang, Xihui Hu, Xinyu Shen, Qiutong Wang, Yijia Tang, Naser Golsanami   +7 more
wiley   +1 more source

Genesis of Hydrothermal Geothermal System and Evaluation of Resources: A Case Study of Pingdingshan Coalfield, China

Geofluids, Volume 2025, Issue 1, 2025.
As one of the clean renewable energy sources, geothermal energy has broad prospects, and correctly understanding its genetic mechanism and resource reserve is the basis for the efficient utilization of the geothermal resources. The characteristics of the ground temperature field in the Pingdingshan mining area are analyzed, and the influence of ...
Yanhe Li, Zheng Zhen, Zhijun Wan, Peng Shi, Yuan Zhang, Carmine Apollaro   +5 more
wiley   +1 more source

Early oil charging from Sinian shales in Ordovician carbonates of the Tabei Uplift, Tarim Basin: Evidence from biomarkers

Petroleum Research
Despite over 40 years of exploration focusing on the deep to ultra-deep Ordovician carbonates as major hydrocarbon targets in the Tarim Basin, the identification of their source rocks remains elusive.
Qingxiu Zeng, Peng Sun, Xingchao Jiang, Heng Zhang, Qifei Fang, Lei Jiang   +5 more
doaj   +1 more source

Tectonic evolution of Caledonian Palaeohigh in the Sichuan Basin and its relationship with hydrocarbon accumulation

Natural Gas Industry B, 2014
The Caledonian Palaeohigh is an important gas exploration domain of Sinian and Lower Paleozoic in western Central Sichuan Basin where gas discoveries have been made successively in recent years.
Li Wei, Yi Haiyong, Hu Wangshui, Yang Geng, Xiong Xuan   +4 more
doaj   +1 more source