Results 61 to 70 of about 952 (171)

Quantifying Multi‐Source Sediment Supply in a Tropical Foreland Basin (Oligocene‐Miocene Nyalau Formation, Borneo)

Basin Research, Volume 38, Issue 2, March–April 2026.
Detrital zircon unmixing identifies three sediment sources for the Oligocene–Miocene Nyalau Formation, including a previously unrecognised syn‐depositional component characterised by Oligocene–Miocene volcanic zircons and Neoproterozoic populations absent from established sources.
Ekundayo J. Adepehin, Yi N. Fong, Eduardo Garzanti, Hariri M. Arifin   +3 more
wiley   +1 more source

Shale lithofacies mechanical differences from tectonic-diagenetic coupling and their response to hydraulic fracture network propagation

Frontiers in Earth Science
Fracture propagation modes in shale formations exhibit significant variations across different lithofacies during tectonic deformation and hydraulic fracturing.
Liyan Yang, Xiangdong Peng, Ying Hu, Anan Liu   +3 more
doaj   +1 more source

Organoclay interaction response to sedimentary environment and sources in Paleogene shales from the Nanpu Sag: Insights for organic matter accumulation mechanism

The Depositional Record, Volume 12, Issue 1, February 2026.
The deep paleo‐lake, characterised by low energy and moderate salinity, facilitated the input of fine‐grained minerals and the development of aquatic organic matter. Under the combined influence of the sedimentary environment and material source, mineral‐bound organic matter was formed, which played a crucial role in the enrichment of organic matter ...
Rusi Zuo, Jingong Cai, Wei Duan, Xiang Zeng, Jinyi He, Chuan Cai, Qianyou Wang   +6 more
wiley   +1 more source

Silicate and Carbonate Weathering Perturbation at the Eocene‐Oligocene Transition Recorded by Mg Isotopes

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract During the Eocene‐Oligocene Transition (ca. 34 Ma), the Earth underwent a dramatic decline in atmospheric CO2, global cooling, a deepening of the carbonate compensation depth (CCD), and the formation of a permanent ice sheet on Antarctica. The expansion of Antarctic glaciers eroded the underlying bedrock and increased the weathering flux to ...
Adam D. Sproson, Toshihiro Yoshimura, Shigeyuki Wakaki, Takahiro Aze, Yusuke Yokoyama, Tsuyoshi Ishikawa, Naohiko Ohkouchi   +6 more
wiley   +1 more source

Depositional environment and pore structure of mixed lithofacies shale of the Longmaxi Formation in the DM Block, the Southern Sichuan Basin, China

Energy Exploration & Exploitation, 2020
Distinguishing the differences of pore characters between different mixed lithofacies shales is helpful for improving shale gas development efficiencies. In this study, the targeted Longmaxi shale ( L 1 ) of the Southern Sichuan Basin was selected as the
Jijun Tian, Chuanzheng Xu, Xin Li, Wenfeng Wang, Wen Lin   +4 more
doaj   +1 more source

Identification of different lithofacies laminations in oil shale and their mechanical properties

Frontiers in Energy Research
Lamination can greatly enhance the anisotropy and heterogeneity of shale and plays a significant role in influencing hydraulic fracturing. The structure and mechanical difference of different lithofacies lamination are the basis to reveal the fracture propagation mechanism.
Shizhong Cheng, Mao Sheng, Chao Deng
openaire   +2 more sources

Evolution and Provenance of the Polish Rotliegend in the Southern Permian Basin

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The Southern Permian Basin (SPB) has been extensively explored for ore deposits. However, a comprehensive evaluation of the remaining copper potential, specifically for sediment‐hosted stratiform copper system, remains lacking. This study applies goSPL, an open‐source landscape and stratigraphic evolution model, to reconstruct the Permian rift‐
Beatriz Hadler Boggiani, Claire Mallard, Tristan Salles, Nicholas Atwood   +3 more
wiley   +1 more source

Comparative Study on Pore Characteristics and Methane Adsorption Capacity of the Lower Silurian Longmaxi Shales with Different Lithofacies

Fractal and Fractional
In this study, shale samples with diverse lithofacies from the Lower Silurian Longmaxi Formation in the Fuling Field were investigated to evaluate the variations in pore characteristics and methane adsorption capacity (MAC) of different shale lithofacies.
Xiaoming Zhang, Changcheng Han, Lanpu Chen, Jian Wang, Wanzhong Shi, Zhiguo Shu, Xiaomei Zhang, Hao Chen, Lin Meng, Yuzuo Liu   +9 more
doaj   +1 more source

Favourable exploration lithofacies of hybrid sedimentary shales in the Dongpu depression, Bohai Bay Basin

Frontiers in Earth Science
Hybrid sedimentary shales (HSS) are key components of continental shale oil resources. The inherent heterogeneity of HSS lead to rapid variations in oil content and mobility, complicating sweet spot prediction.
Jinbao Duan, Yunlong Xu, Bo Yuan, Lingxi Li, Tianwu Xu, Debo Wang, Kai Chao, Dongdong Yang, Honglei Li   +8 more
doaj   +1 more source

Dominant lithofacies and main controlling factors of shale oil and gas enrichment in Jurassic Lianggaoshan Formation in eastern Sichuan region

Youqi dizhi yu caishoulu
The geological reserves of shale oil from the Jurassic Lianggaoshan Formation in the eastern Sichuan region are large， but challenges of the high inhomogeneity and the unclear identification of sweet spots， etc.， seriously limit the effective exploration
XIE Bing, ZHANG Zhehao, BAI Li, FANG Chaoqiang, HE Xuquan, LUO Yanying, MIAO Xiuying, HE Guofen   +7 more
doaj   +1 more source