Results 81 to 90 of about 1,278 (244)

Carbon Isotope Variability across the Ediacaran Yangtze Platform in South China: Implications for a Large Surface-to-Deep Ocean δ13C Gradient [PDF]

, 2007
New isotope data obtained from relatively conformable, carbonate-rich strata of the Ediacaran Yangtze platform in South China reveal substantial δ13C variability.
Christie-Blick, Nicholas, Jiang, Ganqing, Kaufman, Alan J., Wu, Huaichun, Zhang, Shihong   +4 more
core   +2 more sources

Study on the Fracture Formation Mechanisms in Reservoir Rocks of the Second Member of the Dengying Formation in the Sichuan Basin

Journal of Physics: Conference Series
Abstract The second member of the Dengying formation (DYF M2) in the Sichuan Basin holds substantial potential for exploration and development, with fractures serving as a pivotal factor for the efficient extraction of natural gas resources within this formation.
Jian Min, Huifen Han, Fei Liu, Ze Li, Yucheng Jia, Yuntao Liu, Wende Yan, Jian Xiong   +7 more
openaire   +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

First macrobiota biomineralisation was environmentally triggered [PDF]

, 2017
Why large and diverse skeletons first appeared ca 550 Ma is not well understood. Many Ediacaran skeletal biota show evidence of flexibility, and bear notably thin skeletal walls with simple, non-hierarchical microstructures of either aragonite or high-Mg
Gattuso JP, Grant SWF, Hua H, Ivantsov AYu, Lowenstam HA, Vinn O, Vologdin AG, Weiner S, Zhu M   +8 more
core   +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

Laser ablation in situ U-Pb dating and its application to diagenesis-porosity evolution of carbonate reservoirs

Petroleum Exploration and Development, 2019
Through the development and calibration of a reference material which is 209.8 Ma old using a newly-developed Laser Ablation (LA) Multi-Collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS) technique, we successfully overcome the difficulty ...
Anjiang SHEN, Anping HU, Ting CHENG, Feng LIANG, Wenqing PAN, Yuexing FENG, Jianxin ZHAO   +6 more
doaj   +1 more source

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

The Early Cambrian Mianyang-Changning Intracratonic Sag and Its Control on Petroleum Accumulation in the Sichuan Basin, China [PDF]

, 2017
The older and deeper hydrocarbon accumulations receive increasing attention across the world, providing more technical and commercial challenges to hydrocarbon exploration.
Bin Deng, Guozhi Wang, Jinmin Song, Juan Wu, Luba Jansa, Shugen Liu, Wei Sun, Yanhong Tian, Yong Zhong, Zhiwu Li   +9 more
core   +1 more source

Regional nutrient decrease drove redox stabilisation and metazoan diversification in the late Ediacaran Nama Group, Namibia [PDF]

, 2020
The late Ediacaran witnessed an increase in metazoan diversity and ecological complexity, marking the inception of the Cambrian Explosion. To constrain the drivers of this diversification, we combine redox and nutrient data for two shelf transects, with ...
Alcott, L. J., Bowyer, F. T., Butler, I. B., Curtis, A., Curtis-Walcott, S., Hainanan, S., Penny, A. M., Poulton, S. W., Shore, A. J., Thomas, A. L., Wood, R. A.   +10 more
core   +5 more sources

Primary microfossiliferous chert in the Aptian Barra Velha Formation

Sedimentology, Volume 71, Issue 6, Page 1815-1842, October 2024.
ABSTRACT The Barra Velha Formation and other Aptian pre‐salt deposits record the history of the proto‐Atlantic basin and the rifting of Gondwana. Studies have sought to characterize the depositional environment of the basin with a focus on carbonate fabrics and magnesium silicate clays.
Kelsey R. Moore, Antoine Crémière, Theodore M. Present, Andrew Barnett, Kristin D. Bergmann, Joachim Amthor, John Grotzinger   +6 more
wiley   +1 more source