Results 71 to 80 of about 516 (206)

Srednjopermski do kasnopermski i ranotrijaski foraminiferski skupovi u Western Salt Rangeu, Pakistan [PDF]

, 2022
A newly obtained foraminiferal assemblage from the Guadalupian−Lopingian, and Induan of the Western Salt Range (Pakistan) comprises 47 species (including 7 species of fusulinoideans) of 24 genera and 71 species (including 9 species of fusulinoideans) of ...
Hussain, Gulfam, Iqbal, Javed, Majid, Abdul, Rahman, Naveed Ur, Rehman, Gohar, Rehman, Saif Ur, Song, Haijun, Xian, Benzhong   +7 more
core   +2 more sources

Study of Ground Vibration Site Effects on Substation in Inhomogeneous Strata

Shock and Vibration, Volume 2024, Issue 1, 2024.
A large substation confronts the risk of frequent tectonic earthquakes with a relatively high magnitude, thus it is necessary to analyze the seismic response of the site. To provide a reference for the seismic analysis of this substation, the seismic response of the substation site was investigated.
Jingqiu Yang, Quanjun Zhu, Xinming Li, Jinrui Zhang, Xiaolin Li, Sara Amoroso   +5 more
wiley   +1 more source

Fracture Initiation of Multilithology Combination With Respect to Hydraulic Fracturing Stimulation in the Late Permian Coal Measure Strata From the Songzao Coalfield, SW China

International Journal of Energy Research, Volume 2024, Issue 1, 2024.
Pushed by the increasing demand regarding the energy supply, coal measure gas has a tendency to get more and more attention. Therein, greater gas production is usually supported by an effective hydraulic fracturing in this unconventional reservoir—an overlapping multilithology system.
Zhaolei Xu, Ye Zhang, Linhua Pan, Wei Wang, Hualian Zhang, Dongxin Guo, Yao Xu, Hu Li   +7 more
wiley   +1 more source

Early Late Permian coupled carbon and strontium isotope chemostratigraphy from South China: Extended Emeishan volcanism? [PDF]

, 2018
Carbon isotope compositions of carbonates (δ13Ccarb) document a new 3.5‰ CIE toward lower values concomitant with an Emeishan Large Igneous Province (ELIP)-related drowning event (Mapojiao Event, southern Guizhou) during the early Wuchiapingian.
Bagherpour, Borhan, Bucher, Hugo, Chiaradia, Massimo, Schneebeli-Hermann, Elke, Shen, Shu-zhong, Vennemann, Torsten   +5 more
core   +2 more sources

Soil, grain and water chemistry and human selenium imbalances in Enshi district, Hubei Province, China [PDF]

, 1996
Many elements which are essential to human and other animal health in small doses can be toxic if ingested in excess. Selenium (Se), a naturally occurring metalloid element is found in all natural materials on earth including rocks, soils, waters, air,
Fordyce, F.M., Green, K., Liu, X., Zhang, G.   +3 more
core  

Biotic responses to volatile volcanism and environmental stresses over the Guadalupian-Lopingian (Permian) transition [PDF]

, 2019
Biotic extinction during the Guadalupian-Lopingian (G-L) transition is actively debated, with its timing, validity, and causality all questioned. Here, we show, based on detailed sedimentary, paleoecologic, and geochemical analyses of the Penglaitan ...
Chen, ZQ, Grasby, SE, Huang, Y, Kaiho, K, Wang, X, Wignall, PB, Zhao, L   +6 more
core   +1 more source

The Law of Acid Pressure Fracture Propagation in Maokou Formation Carbonate Reservoir in Central Sichuan

Processes
The Dolomite reservoir of the Maokou Formation is rich in gas resources in the central Sichuan Basin. Acid fracturing is an important technical means to improve reservoir permeability and productivity. The interaction mode of the dolomite and limestone acid system will affect the effect of reservoir reconstruction.
Yu Fan, Hailong Jiang, Zhouyang Wang, Jinsui Li, Xing Yang, Zefei Lv, Xiangfei Zhang, Xueyuan Han   +7 more
openaire   +1 more source

Major stone forest, litomorphogenesis and development of typical shilin (Yunnan, China) [PDF]

, 2012
Major stone forest excellently reveals most characteristics of the formation of the various stone forests. The relatively thick stratification and evenly composed rock clearly display the development of stone forests from subsoil karren.
Knez, Martin, Liu, Hong, Slabe, Tadej
core   +2 more sources

Three-stage hydrocarbon accumulations in the Middle Permian in the Central Sichuan Basin

Frontiers in Earth Science
The Middle Permain Maokou Formation (P2m) is a new region of natural gas exploration in the Sichuan Basin, is characterized by bioclastic limestone with localized dolomitization, and karst fractured-vuggy reservoirs.
Jianyong Zhang, Yun Liao, Pengda Lu, Wenzheng Li, Kedan Zhu, Zeqi Li, Tengzhen Tian, Juan Wu, Wei Sun, Shugen Liu, Shugen Liu, Bin Deng   +11 more
doaj   +1 more source

Magnetostratigraphy susceptibility correlations for the Guadalupian-Lopingian boundary and the placement of the North American Ochoan Series: Texas (USA) and South China [PDF]

, 2012
Stratigraphic studies have emphasized the use of multiple, geochemical and geochemical proxies to investigate critical geologic boundaries, events and their correlation throughout the entire Phanerozoic. In this study, an emerging geophysical proxy, mass-
Clark, Matthew Allan
core   +2 more sources