Results 71 to 80 of about 235 (148)

Transformation of the middle–upper ordovician sedimentary environment of the north China plate under the caledonian tectonic background: a case study of the ordovician majiagou formation in the qishan area

Frontiers in Earth Science
This study documents an abrupt sedimentary and petrographic transition near the top of the Ordovician Majiagou Formation in the Qishan area, southwestern Ordos Basin, North China Plate.
Di Zhao, Di Zhao, Xiang Wei, Rongxi Li, Bangsheng Zhao, Xiaoli Wu, Anquan Xia, Anquan Xia, Kaixin Feng   +8 more
doaj   +1 more source

Application of CNN and XGBoost machine learning models in TOC prediction of marine carbonate source rocks： A case study of Majiagou Formation， Ordos Basin

Youqi dizhi yu caishoulu
Traditional methods such as the ΔlogR method and multiple regression exhibit limitations in evaluating the total organic carbon （TOC） content of highly/over-mature marine carbonate source rocks.
QIAO Xin, ZHANG Fengqi, XU Wanglin, LIU Siyao, FENG Yansong, CHEN Hongguo, YUAN Xue   +6 more
doaj   +1 more source

Ordovician stratigraphy and sedimentary characteristics of Caojiagou section in Qishan County, southern margin of Ordos Basin

Youqicang pingjia yu kaifa, 2022
The Caojiagou section in Qishan County, Shaanxi Province is located in the southern margin of the Ordos Basin. The well-exposed section deposited complete Ordovician strata and developed various sedimentary types, and its location has convenient ...
CHEN Qiang, LI Wenhou, SUN Jiaopeng, ZHANG Qian, LIANG Jiwei, LI Zhichao   +5 more
doaj  

Genetic Types and Source of the Upper Paleozoic Tight Gas in the Hangjinqi Area, Northern Ordos Basin, China

Geofluids, 2017
The molecular and stable isotopic compositions of the Upper Paleozoic tight gas in the Hangjinqi area in northern Ordos Basin were investigated to study the geochemical characteristics.
Xiaoqi Wu, Chunhua Ni, Quanyou Liu, Guangxiang Liu, Jianhui Zhu, Yingbin Chen   +5 more
doaj   +1 more source

Sedimentary and Early Diagenetic Responses to the Huaiyuan Movement During the Early–Middle Ordovician Transition in the Ordos Basin, North China

Geosciences
The early Paleozoic Huaiyuan Movement created a major unconformity in the Ordos Basin, significantly influencing sedimentation and early diagenesis in both the overlying and underlying strata near the unconformity.
Hao Quan, Zhou Yu, Zhanfeng Qiao, Chenqing Li, Pan Xia, Zhongtang Su, Huaguo Wen, Min Qin, Meng Ning   +8 more
doaj   +1 more source

Multiple tests for identifying hydraulic conductivities of south and north boundary faults at Ganhe field, Huozhou Coal Electricity Group Co., Ltd, China

Geomatics, Natural Hazards & Risk, 2018
Hydraulic conductivities of faults influence the mining design and safety of a coalmine badly. Results of field and indoor tests on hydraulic conductivities of the boundary faults in Ganhe coalfield in China are illustrated.
Jifeng Liu, Fangpeng Cui, Qiang Wu, Shouqiang Liu, Yifan Zeng   +4 more
doaj   +1 more source

Fracture identification and characteristics of carbonate underground gas storage: an example from the eastern area of Sulige gas field, ordos Basin, China. [PDF]

Sci Rep, 2023
Xie J, Hao X, Zhang Y, Zhang J, Xia Y, He Y.   +5 more
europepmc   +1 more source

Lithological composition and reservoir properties of Lower Ordovician Majiagou formation in the gas field Tabamiao (Ordos Basin, China)

Moscow University Bulletin. Series 4. Geology, 2016
Ordos Basin is concentrated rich areas of coal, natural gas and oil. In last years it is becoming an important mineral resource and energy base of China. To the most well-known and good studied gas fields belong Sulige and Tabamiao, where natural gas takes place in carbonate rocks of Early Ordovician time. As the result of an investigation that made by
openaire   +2 more sources

Strata temperatures and geothermal resource evaluation in the Dongpu Depression, Bohai Bay Basin, North China. [PDF]

Sci Rep, 2023
Qiao Y, Zuo Y, Tu S, Zhang J, Yang M, Zhang T.   +5 more
europepmc   +1 more source

Origin of Dolomite in the Majiagou Formation (Ordovician) of the Liujiang Basin, China: Evidence from Crystal Structure, Isotope and Element Geochemistry

Minerals
Research on dolomite has long been central in geoscience, yet understanding the origin of Middle Ordovician dolomite in the northeast of the North China Platform remains limited. Based on this, this study focuses on dolomite of Majiagou Formation in Liujiang Basin, and analyzes its genetic process.
Xue, Huaiyu, Qian, Jianping, Xu, Wentan
openaire   +1 more source