Results 41 to 50 of about 375,100 (421)

A comprehensive analysis of the sedimentology, petrography, diagenesis and reservoir quality of sandstones from the Oligocene Xiaganchaigou (E3) Formation in the Lengdong area, Qaidam Basin, China

open access: yesJournal of Petroleum Exploration and Production Technology, 2018
The sandstone from the Oligocene Xiaganchaigou Formation (E3) in the Lengdong area, Qaidam Basin, China, is extensively distributed and acts as an effective regional reservoir for hydrocarbon accumulation.
Jie He   +7 more
doaj   +1 more source

The structure of the lithosphere in area of junction between the Okhotsk sea and the continental tectonic structures

open access: yesЛитосфера, 2017
The area of junction of the Ul'in volcano-tectonic structure of the Okhotsk-Chukotka volcanic belt and tectonic structures of Okhotsk Sea has both fundamental interest - for understanding tectonics and geodynamics on the outskirts of the continent, and ...
Ekaterina G. Ivolga   +3 more
doaj   +1 more source

Thermodynamically consistent model for poroelastic rocks towards tectonic and volcanic processes and earthquakes [PDF]

open access: yes, 2021
A general-purpose model combining concepts from rational continuum mechanics, fracture and damage mechanics, plasticity, and poromechanics is devised in Eulerian coordinates, involving objective time derivatives. The model complies with mass, momentum, and energy conservation as well as entropy inequality and objectivity.
arxiv   +1 more source

Occurrence characteristics and main control mechanism of trace elements in Early Permian coal in the southern margin of North China Plate

open access: yes地质科技通报, 2023
Objective The study focuses on the development of critical elements in coal as a new area of mineral resource exploration. Methods Various analytical methods including X-ray diffraction, X-ray fluorescence spectrum, and inductively coupled plasma-mass ...
Duoen Yuan   +4 more
doaj   +1 more source

Active Tectonics of the Mediterranean Region

open access: yes, 1972
Summary Examination of more than 100 fault plane solutions for earthquakes within the Alpide belt between the Mid-Atlantic ridge and Eastern Iran shows that the deformation at present occurring is the result of small continental plates moving away from ...
D. McKenzie
semanticscholar   +1 more source

Multiphase boudinage: a case study of amphibolites in marble in the Naxos migmatite core [PDF]

open access: yesSolid Earth, 2018
In multiply deformed terrains multiphase boudinage is common, but identification and analysis of these is difficult. Here we present an analysis of multiphase boudinage and fold structures in deformed amphibolite layers in marble from the migmatitic ...
S. Virgo, C. von Hagke, J. L. Urai
doaj   +1 more source

Landslide Detection and Mapping Based on SBAS-InSAR and PS-InSAR: A Case Study in Gongjue County, Tibet, China

open access: yesRemote Sensing, 2022
The rock mass along the Jinsha River is relatively broken under complex geological action. Many ancient landslides were distributed along the Jinsha River in Gongjue County, which is very dangerous under the action of gravity, tectonic stress and river ...
Jiaming Yao, Xin Yao, Xinghong Liu
doaj   +1 more source

The Effect of Obliquity of Slip in Normal Faults on Distribution of Open Fractures

open access: yesFrontiers in Earth Science, 2019
Close to surface, cohesive rocks fail in extension, which results in open fractures that can be several tens of meters wide, so-called massively dilatant faults. These open fractures make fault slip analysis in rifts challenging, as kinematic markers are
Christoph von Hagke   +5 more
doaj   +1 more source

Accelerated Movements of Xiaomojiu Landslide Observed with SBAS-InSAR and Three-Dimensional Measurements, Upper Jinsha River, Eastern Tibet

open access: yesApplied Sciences, 2022
Many ancient landslides in the upper reaches of the Jinsha River seriously threaten the safety of residents on both sides of the river. The river erosion and groundwater infiltration have greatly reduced the stability of the ancient landslides along the ...
Xinghong Liu, Xin Yao, Jiaming Yao
doaj   +1 more source

Archean upper crust transition from mafic to felsic marks the onset of plate tectonics

open access: yesScience, 2016
New crustal clues from old rocks The ghost of continental crust long eroded away may exist in certain element ratios found in Archean rocks. Tang et al. used Ni/Co and Cr/Zn ratios as a proxy for the magnesium oxide that long ago weathered away in Earth ...
Ming Tang, Kang Chen, R. Rudnick
semanticscholar   +1 more source

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