Results 141 to 150 of about 4,225,085 (180)

Study on the Sedimentary Environments and Its Implications of Shale Reservoirs for Permian Longtan Formation in the Southeast Sichuan Basin

open access: yesMinerals (Basel, Switzerland), 2023
Marine–continental transitional shale is one of the most promising targets for shale gas exploration in the Lower Yangtze region. To investigate the sedimentary environments and the regularity of the enrichment of the Longtan shale, multiple techniques including core and thin-section observations, geochemical and elemental analyses, X-ray diffraction ...
Linqi Wang, Qian Cao, Xiangyang Pei
exaly   +3 more sources

Genesis of Pyrite Concretions: Constraints From Mineral and Geochemical Features of Longtan Formation in Anhui Province, Eastern China [PDF]

open access: yesMinerals (Basel, Switzerland), 2019
The occurrence of pyrite concretions in the Permian Longtan Formation sheds light on the paragenesis, formation conditions and regional paleoenvironment. We analyzed the mineral and geochemical characteristics of pyrite concretions using scanning electron microscopy-energy dispersive spectrometer (SEM-EDS), X-ray diffraction (XRD) and laser ablation ...
Yanfei An, Chun-Kit Lai
exaly   +3 more sources

Gas Hazard Evaluation for Tunnel Construction in Coal-Bearing Longtan Formation, South China

Bulletin of Engineering Geology and the Environment, 2022
Su Peidong, Peng Qiu
exaly   +2 more sources

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