Results 61 to 70 of about 4,224,476 (188)

Zhang et al., 2020

open access: yes, 2020
Table S1. Magnesium isotopic compositions of standards and samples from the Liuchapo Formation and Niutitang Formation, along with carbon isotopic compositions and total organic carbon of samples across the E-C boundary succession at the Bahuang section,
Zhang, G
core   +2 more sources

Sedimentary 17O‐Nitrate Evidence for Phanerozoic Aridity and Humidity Oscillations in South China

open access: yesGeophysical Research Letters, Volume 51, Issue 20, 28 October 2024.
Abstract Climate changes are known to have been a key regulator of the biodiversity in Earth's history. However, the dry‐humid degrees and alternating patterns throughout the Phanerozoic remain largely unconstrained. In this study, we report high contents (2.4 ± 3.8 mg N kg−1) and 17O anomalies (11.0 ± 7.4‰) of nitrate (NO3−) in the early Cambrian ...
Wei‐Guo Fan   +6 more
wiley   +1 more source

How Induced Earthquakes Respond to Pre‐Existing Fractures and Hydraulic Fracturing Operations? A Case Study in South China

open access: yesJournal of Geophysical Research: Solid Earth, Volume 129, Issue 9, September 2024.
Abstract Hydraulic fracturing in shale gas production can induce felt earthquakes, making it crucial to understand and mitigate induced earthquakes. The Cen'gong shale gas block in South China offers extensive data—3D seismic, geological structure, microseismic data, and detailed stimulation operations—allowing a comprehensive investigation into ...
Dewei Li   +4 more
wiley   +1 more source

Sheet-Like Microfossils From Hydrothermally Influenced Basinal Cherts of the Lower Cambrian (Terreneuvian) Niutitang Formation, Guizhou, South China

open access: yes, 2019
Early diagenetic cherts in basinal shales of the lower Cambrian (Terreneuvian) Niutitang Formation, exposed in the Yangtiao section, Majiang, Guizhou Province, South China, contain abundant sheet-like microfossils.
Xie, Xiao-Min   +6 more
core   +1 more source

Anisotropy and Energy Evolution Characteristics of Shales: A Case Study of the Longmaxi Formation in Southern Sichuan Basin, China

open access: yesGeofluids, Volume 2024, Issue 1, 2024.
To obtain the influence of anisotropy and energy evolution characteristics on wellbore stability, the acoustic and mechanical anisotropy characteristics of shales are studied through various experiments, including scanning electron microscopy, ultrasonic pulse transmission, and uniaxial compression experiments, with the Longmaxi Formation shale in the ...
Liu Xiangjun   +9 more
wiley   +1 more source

Identification Method of Marine Shale Gas 'High-Quality Layer' in the Lower Paleozoic Area, Southern China and Its Application

open access: yesYankuang ceshi, 2020
BACKGROUND 'High-quality layer' is the focus and hotspot of shale gas exploration and development. Many explorations and important developments have been studied by researchers at home and abroad.
GE Ming-na   +4 more
doaj   +1 more source

A Case Study on Preservation Conditions and Influencing Factors of Shale Gas in the Lower Paleozoic Niutitang Formation, Western Hubei and Hunan, Middle Yangtze Region, China

open access: yesGeofluids, Volume 2024, Issue 1, 2024.
The Niutitang Formation of the lower Cambrian (Є1n) is a target reservoir of shale gas widely developed in China’s Middle‐Upper Yangtze region, with the characteristics of being widely distributed, having a big thickness and highly organic carbon abundance. However, the exploration and research degree are relatively low. Based on extensive core sample,
Shengling Jiang   +4 more
wiley   +1 more source

Data for: Development and evolution of euxinic wedge on the ferruginous outer shelf of early Cambrian stratified ocean in the Yangtze Block

open access: yes, 2019
Geochemical data for the Niutitang Formation of Daotuo and Bahuang sections, South China. Data source: (1) Samples with *: all data are from this study; (2) Other samples: Fe speciation data (Fecarb, Feox, Femag, Fepy) and trace elements (Mo, U) are from
Chen, Daizhao   +2 more
core   +3 more sources

Pore Structure and Fractal Characteristics of Niutitang Shale from China

open access: yes, 2018
A suite of shale samples from the Lower Cambrian Niutitang Formation in northwestern Hunan Province, China, were investigated to better understand the pore structure and fractal characteristics of marine shale.
Shuheng Tang   +5 more
core   +1 more source

Zhang et al., 2020-JGR

open access: yes, 2020
Table S1. Magnesium isotopic compositions of standards and samples from the Liuchapo Formation and Niutitang Formation, along with carbon isotopic compositions and total organic carbon of samples across the E-C boundary succession at the Bahuang section,
Zhang, G (via Mendeley Data)
core   +1 more source

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