Results 51 to 60 of about 4,225,085 (180)

Weathering of the Emeishan Large Igneous Province Enhanced the Nutrient Flux to the Oceans and Led to Late Permian Climate Cooling

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Mafic continental large igneous provinces (LIPs) erupted rapidly and may have overwhelmed Earth's atmospheric and biospheric systems. However, the exact balance and interplay between short‐term climate warming caused by CO2 emissions and long‐term cooling due to LIP weathering remains poorly understood.
Kunyue Ling, Hanjie Wen, Shengtao Gong, Ce Chen, Shengjiang Du, Runsheng Yin   +5 more
wiley   +1 more source

Characteristics of ultra-deep shale reservoir of marine-continental transitional facies: a case study of lower member of Upper Permian Longtan Formation in well Y4, Puguang Gas Field, northeastern Sichuan Basin

Shiyou shiyan dizhi, 2022
In order to explore the characteristics of marine-continental transitional shale reservoir under overburden conditions, studies of organic geochemistry, mineral composition, parameters of pore structure and physical properties of shale in well Y4 of the ...
Jin LI, Xuejun WANG, Kai ZHOU, Yunsuo WANG, Ningchao LI, Ying WU, Meige WANG   +6 more
doaj   +1 more source

GIS and SWMM‐Integrated Multi‐Indicator Fuzzy Assessment for Urban Flood Risk in Chengdu

Journal of Flood Risk Management, Volume 19, Issue 1, March 2026.
ABSTRACT Effective assessment of urban flood risk is essential for decision‐making under mixed and uncertain information conditions. This study proposes a multi‐indicator hesitant fuzzy assessment framework integrating hazard, exposure, and vulnerability.
Mingxia Lu, Ting Ni, Jiuping Xu
wiley   +1 more source

Paleozoic basin prototype evolution and source rock development in the South Yellow Sea

Shiyou shiyan dizhi, 2020
Drill samples and outcrops confirmed that three sets of source rocks developed in the Lower Yangtze Block area, namely, the Lower Cambrian Mufushan Formation, the Upper Ordovician Wufeng Formation-the Lower Silurian Gaojiabian Formation, and the Permian.
Weilin ZHU, Chunfeng CHEN, Bocheng ZHANG, Yanzhou WAN, Xiaowei FU, Yinguo ZHANG   +5 more
doaj   +1 more source

Sedimentology and Geochemistry of the Permian Longtan Formation Transitional Shale, Sichuan Basin, Southwest China

Minerals
The transitional shale of the Upper Permian Longtan Formation in the Sichuan Basin is characterized by high organic matter abundance, wide distribution, and significant resource potential. This study systematically analyzes the sedimentary environment and geochemical characteristics of the Longtan Formation, clarifying the evolutionary patterns of its ...
Yu Ji, Yuqiang Jiang, Zhanlei Wang, Ruiqi Gao, Jian Qian   +4 more
openaire   +1 more source

Primulina marmorata (Gesneriaceae), a new species from northern Guangxi, China

Nordic Journal of Botany, Volume 2026, Issue 1, January 2026.
Primulina marmorata, a new species of Gesneriaceae from the limestone areas of Siding Town, Rong'an County, liuzhou City, Guangxi, China, is described and illustrated here. It morphologically resembles P. yungfuensis in leaf blades. Still, it can be easily distinguished from the latter by noting a combination of characteristics, especially in its ...
Shu‐Shan Zhang, Wei‐Chuen Chou, Qi‐Jun Wang, Yi‐Gang Wei, Fang Wen   +4 more
wiley   +1 more source

Characteristics of Mineralogy, Lithofacies of Fine-Grained Sediments and Their Relationship with Sedimentary Environment: Example from the Upper Permian Longtan Formation in the Sichuan Basin

The Longtan Formation of the Upper Permian in the Sichuan Basin has become a significant target for shale gas exploration in recent years. Multiple methods, including outcrop observations, thin sections, total organic matter content, X-ray diffraction ...
Jingchun Tian, Jianhua He, Liangbiao Lin, Liqing Chen, Wen Zhou, Yu Yu, Hongzhi Yang, Du Li   +7 more
core   +3 more sources

Reservoir characteristics and exploration targets of deep coalbed methane in the Qijiang area, southeastern Sichuan

Shiyou shiyan dizhi
Against the backdrop of global energy transition, deep coalbed methane (CBM) at burial depths greater than 1 500 m has emerged as a highly promising unconventional natural gas resource.
Zhujiang Liu, Xiangfeng Wei, Feiran Chen, Daojun Wang, Fubin Wei, Jingyu Hao   +5 more
doaj   +1 more source

Geological occurrence and productivity prediction for coalbed methane of central Hunan depression, China

Frontiers in Earth Science, 2022
To analyze the geological occurrence and predict the drainage performance of coalbed methane in the central Hunan depression of China, coal samples were collected to conduct physical experiments and numerical simulations.
Ningbo Cai, Ningbo Cai, Ningbo Cai, Keying Wang, Keying Wang, Jiang Du, Jiang Du   +6 more
doaj   +1 more source

Mitigating Surface Tension Effects in Multi‐Coalbed Methane Reservoirs: Case Study of Liupanshui Field

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Water locking effect caused by surface tension severely restricts coalbed methane (CBM) productivity in multilayer reservoirs. The Songhe demonstration area features main target coal seams with overpressure, high gas content, and high gas saturation, presenting favorable CBM development conditions.
Zhu Liu, Yu Xiong, Shiliang Zhu, Zong Ren, Xiao Wang, Xixi Hao, Yun Feng, Mahmoud Ahmed   +7 more
wiley   +1 more source