Results 61 to 70 of about 1,541,264 (242)

Tectonic Switch From Triassic Contraction to Jurassic-Cretaceous Extension in the Western Tarim Basin, Northwest China: New Insights Into the Evolution of the Paleo-Tethyan Orogenic Belt

Frontiers in Earth Science, 2021
We use stratigraphic, sedimentological, and borehole data and seismic profiles from the western Tarim Basin to document its Mesozoic tectonic evolution.
Hongxiang Wu, Hongxiang Wu, Xiaogan Cheng, Xiaogan Cheng, Hanlin Chen, Hanlin Chen, Cai Chen, Yildirim Dilek, Yildirim Dilek, Jun Shi, Changmin Zeng, Chunyang Li, Chunyang Li, Wei Zhang, Wei Zhang, Yuqing Zhang, Yuqing Zhang, Xiubin Lin, Xiubin Lin, Fengqi Zhang, Fengqi Zhang   +20 more
doaj   +1 more source

A review of Upper Jurassic Pliosaurs

, 1960
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +1 more source

Numerical Simulation Study on Optimization of Horizontal Sublevel Top‐Coal Caving Mining Technique for Steeply Inclined Extra‐Thick Coal Seam

Energy Science &Engineering, EarlyView.
As the sublevel height increases, the top‐coal recovery amount gradually increases, but both the top‐coal recovery rate and the thickened top‐coal recovery rate show a downward trend, and the decline in the top‐coal recovery rate is gradually increasing. The comparison indicates that the optimal sublevel height is 20 m.
Hongsheng Tu, Dingyi Hao, Wenhong Xiao, Fuhao Jiang, Shikun Xu   +4 more
wiley   +1 more source

Design on Waterproof Safety Coal Pillar at Outcrop Area of Thick Coal Seam Under he Large Thick Jurassic Red Stratum

Meikuang Anquan, 2020
To study the waterproof coal pillar design for mining in the outcrop area of thick coal seam in Shanxi Formation under the large Jurassic red stratum in the seventh mining area planned and designed by Dongtan Coal Mine, the systematic analysis is ...
XIE Huadong
doaj   +1 more source

Fracture Development Mechanism of Water‐Isolating Soil Layers During Downward Mining of Shallow‐Buried Coal Seam Groups

Energy Science &Engineering, EarlyView.
This study systematically investigates the fracture development mechanisms of water‐isolating soil layers under the coupled effects of repeated mining and groundwater seepage during the downward mining of shallow‐buried coal seams. The findings provide a theoretical basis for evaluating stratum stability and preventing roof water inrush.
Tao Yang, Shuqi Zhang, Jie Zhang, Haifei Lin, Dong Liu, Hui Liu, Yiming Zhang, Jianping Sun   +7 more
wiley   +1 more source

New information on Hauffiosaurus (Reptilia, Plesiosauria) based on a new species from the Alum Shale Member (Lower Toarcian: Lower Jurassic) of Yorkshire [PDF]

, 2011
An almost complete, three-dimensionally preserved plesiosaurian from the Hildoceras bifrons Zone of the Alum Shale Member (Whitby Limestone Formation; Lower Toarcian) of Yorkshire, UK, is described in detail.
Benson, R. B. J., Gomez Perez, M., Noe, L., Ketchum, Hilary F, MARCELA GóMEZ-PéREZ, LESLIE F. NOÈ, HILARY F. KETCHUM, ROGER B. J. BENSON   +7 more
core   +1 more source

Post‐Stimulation Hydraulic Response and Productivity Constraints of a Low‐Productivity Carbonate Geothermal Well in the Small Intramontane Basin, Beijing Piedmont, North China

Energy Science &Engineering, EarlyView.
Formed ~1.4 Ga, the carbonate reservoir of the Jixian System is a key geothermal reservoir in northern China. Differential basin–mountain evolution since the Cenozoic led to distinct reservoir‐forming histories; consequently, this same reservoir shows marked productivity contrasts between intramontane basins and the large rift Bohai Bay Basin ...
Chuanqing Zhu, Kefu Li, Wansen Yao, Wanqing Geng, Yonghui Huang, Shu Jiang, Nansheng Qiu   +6 more
wiley   +1 more source

The Jurassic of Denmark and Greenland: Jurassic lithostratigraphy and stratigraphic development onshore and offshore Denmark [PDF]

Geological Survey of Denmark and Greenland Bulletin, 2003
A complete updated and revised lithostratigraphic scheme for the Jurassic succession of the onshore and offshore Danish areas is presented together with an overview of the geological evolution.
Michelsen, Olaf, Nielsen, Lars Henrik, Johannessen, Peter N., Andsbjerg, Jan, Surlyk, Finn   +4 more
doaj  

THE BIOSTRATIGRAPHY OF KIMMERIDGIAN DEPOSITS (UPPER JURASSIC)

Tectonics and Stratigraphy, 2012
 Наведено результати вивчення стратиграфії кімеріджськоих відкладень (верхня юра) Дніпровсько-Донецької западини і північно-західної окраїни Донбасу, дано їх палеонтологічне обґрунтування. 
openaire   +3 more sources

The Boundary Between Middle and Upper Jurassic [PDF]

Geological Magazine, 1956
The wisdom of placing the middle Jurassic-upper Jurassic boundary at the Callovian-Oxfordian line (rather than between the Bathonian and Callovian), as was done in Arkell9s recent book "Jurassic geology of the world" is questioned (by Melville) and reconfirmed (by Arkell).
openaire   +1 more source