Zobrazeno 1 - 10
of 989
pro vyhledávání: '"upper ordovician"'
Publikováno v:
Open Geosciences, Vol 16, Iss 1, Pp 7-11 (2024)
Real drilling near the upper Ordovician pinch-out line in the Tahe Oilfield shows that the drilling encountered karst reservoir. However, due to the transitional position between the denudation area and the overlying area and the special karst geolog
Externí odkaz:
https://doaj.org/article/2130d917690a4181ae81558729d21ba2
Autor:
Shuqi LAN, Bitian WEI, Longyun XING, Nan DU, Xiangang LENG, Nan JIANG, Xin CHENG, Qinglong CHEN, Baofeng WANG, Pengxiang XU, Xiaohong DENG, Dongmeng ZHANG, Teng LI, Feifan LIU, Hanning WU
Publikováno v:
地质科技通报, Vol 43, Iss 2, Pp 355-369 (2024)
Objective Palaeomagnetic methods can be used to quantitatively constrain the Early Palaeozoic palaeo-position of the North China Block (NCB), which provides a crucial scientific basis for researching the evolution of the Proto-Tethyan Orogeny and the
Externí odkaz:
https://doaj.org/article/42b53017747e46ccae18d3696dd4434d
Publikováno v:
Shiyou shiyan dizhi, Vol 45, Iss 4, Pp 751-760 (2023)
Fruitful achievements have been made in shale gas exploration in the middle and deep areas from the Upper Ordovician Wufeng Formation to the Lower Silurian Longmaxi Formation in the southeastern Sichuan Basin, and in the research on shale reservoir c
Externí odkaz:
https://doaj.org/article/fb4122987ed14e6c96d15539791361cc
Autor:
Frank R. Ettensohn, Gustavo Martins
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 30-33 (2023)
Black gas shales are major parts of many foreland-basin sequences and comprise important components of unconformity-bound tectophase cycles, which reflect sedimentary/stratigraphic, flexural responses to deformational loading and relaxation in an oro
Externí odkaz:
https://doaj.org/article/a606bce2db92401f8dd63ebe8407e7cc
Publikováno v:
Estonian Journal of Earth Sciences, Vol 72, Iss 1, Pp 14-17 (2023)
The upper parts of the Upper Ordovician Lexington Limestone in central Kentucky, USA, are interpreted to reflect a structurally controlled carbonate buildup, represented by a facies mosaic of shoal complexes and interbedded shale units. Facies intert
Externí odkaz:
https://doaj.org/article/558bf5cd5ac94d99ad40e23fa6bf5f82
Autor:
Xueying Ma, Shenghui Deng, Yuanzheng Lu, Ru Fan, Fenglian Zhang, Yanqi Sun, Xu Li, Zhengyang Qu
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
The discovery of hydrocarbon in the Pagoda Formation in South China has received attention from the petroleum industry. This research paper identifies the discontinuity surface underlying the Pagoda Formation. The Upper Ordovician strata were correla
Externí odkaz:
https://doaj.org/article/874838769fa646258557743d80d1dede
Autor:
Weixin LIU, Longfei LU, Deliao YE, Chencheng HE, Wangwei LIU, Lingjie YU, Wentao ZHANG, Baojian SHEN
Publikováno v:
Shiyou shiyan dizhi, Vol 44, Iss 5, Pp 804-814 (2022)
Overpressure is commonly existed in shale gas pools of Jiaoshiba and Dingshan structures in the southeastern part of Sichuan and Huangjinba structure in Changning area of the southern region of Sichuan. From the Upper Ordovician Wufeng Formation to t
Externí odkaz:
https://doaj.org/article/3629d27da0754fc999e582208b8ba9c8
Akademický článek
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Autor:
Yuman WANG, Hongyan WANG, Zhen QIU, Junjun SHEN, Qin ZHANG, Leifu ZHANG, Canhui WANG, Xinjing LI
Publikováno v:
Petroleum Exploration and Development, Vol 49, Iss 1, Pp 37-51 (2022)
Based on anatomy of key areas and data points and analysis of typical features of shell layer in Guanyinqiao Member, basic characteristics of key interfaces, mainly bentonite layers, in the Upper Ordovician Wufeng Formation—Lower Silurian Longmaxi
Externí odkaz:
https://doaj.org/article/abc6edb24dd84e9fb4bda31e7d8ce8e5
Publikováno v:
Shiyou shiyan dizhi, Vol 43, Iss 6, Pp 996-1005 (2021)
Based on core, thin section, scanning electron microscopy observations, X-ray diffraction analysis, as well as carbon and oxygen isotopes and energy spectrum analysis of carbonate rocks, the quartz, feldspar, pyrite, carbonate and clay minerals in sh
Externí odkaz:
https://doaj.org/article/0fae25afcb9046ce9373da6e5b856007