Results 11 to 20 of about 1,461 (149)

AGE CONSTRAINTS AND METALLOGENIC PREDICTION OF GOLD DEPOSITS IN THE AKZHAL-BOKO-ASHALIN ORE ZONE (ALTAI ACCRETION-COLLISION SYSTEM)

open access: yesГеодинамика и тектонофизика, 2021
We present new age constraints for igneous rocks and ore-metasomatic formations of the gold deposits in the Akzhal-Boko-Ashalin ore zone. In terms of their ore formation, these deposits correspond mainly to the orogenic type, which generally reflects ...
Yu. A. Kalinin   +9 more
doaj   +1 more source

DEFORMATION REGIMES AND LOW-RANK PALEOTECTONIC STRESSES OF THE WESTERN TIAN SHAN IN THE MESOZOIC – CENOZOIC

open access: yesГеодинамика и тектонофизика, 2023
There is a description of the results of studies of deformation regimes and reconstruction of stress fields of certain time intervals of the Mesozoic – Cenozoic history of the western part of the Tien Shan based on the geological and structural data and ...
R. A. Umurzakov
doaj   +1 more source

Mechanism and Prediction of Geothermal Resources Controlled by Neotectonics in Mountainous Areas: A Case Study of Southeastern Zhangjiakou City, China

open access: yesFrontiers in Earth Science, 2022
The geothermal resources in mountainous areas are usually controlled by neotectonic faults. To minimize the risk in site selection for geothermal drilling, the controlling mechanism must be identified.
Wenzhen Yuan   +9 more
doaj   +1 more source

THE STRESS-AND-STRAIN STATE OF THE SOUTH-EASTERN PART OF THE SKYBA AND BORYSLAV-POKUTTYA NAPPES OF THE UKRAINIAN CARPATHIANS

open access: yesГеодинамика и тектонофизика, 2015
The article presents results of field studies and interpretation of tectonophysical data from profiles in the valleys of Bystritsa Nadvornyanskaya, Prut, Pistynka (the right-side tributary of the Prut river), Belyi and Chernyi Cheremosh, and Seret rivers.
I. M. Bubniak   +2 more
doaj   +1 more source

Paleostress field reconstruction in the Oslo region

open access: yesMarine and Petroleum Geology, 2010
Abstract The geodynamic history of a region is archived in its geologic record which, in turn, may reflect deformation patterns that causally can be related to certain configurations of paleostresses. In the Oslo Region, the exposed geological record ranges from Precambrian high-grade metamorphic rocks through Cambro-Silurian sedimentary rocks to ...
Sippel, J.   +3 more
openaire   +4 more sources

Mechanics of the giant radiating Mackenzie dyke swarm: A paleostress field modeling [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2010
The 1.27 Ga Mackenzie dyke swarm of the Canadian Shield is a giant radiating dyke swarm that gradually swings in orientation from N‐S in the focal area to NW‐SE trends in peripheral areas. In this paper, we propose a new model (the “Plug” model) that accounts for the paleostress contribution to the mechanism of emplacement for the Mackenzie dyke swarm ...
Guiting Hou   +3 more
openaire   +1 more source

Contrasting stress fields on correlating margins of the South Atlantic [PDF]

open access: yes, 2015
The “passiveness” of passive continental margins across the globe is currently under debate since several studies have shown that these margins may experience a variety of stress states and undergo significant vertical movement post-breakup.
Glasmacher, Ulrich Anton   +4 more
core   +1 more source

Mesozoic–Cenozoic stress field magnitude in Sichuan Basin, China and its adjacent areas and the implication on shale gas reservoir: Determination by acoustic emission in rocks

open access: yesChina Geology, 2020
: The Sichuan Basin is one of the vital basins in China, boasting abundant hydrocarbon reservoirs. To clarify the intensity of the tectonic stress field of different tectonic episodes since the Mesozoic and to identify the regional dynamic background of ...
Lin-yan Zhang   +8 more
doaj   +1 more source

Stress Field Evolution of the Southernmost Andean Cordillera From Paleostress Analysis (Argentine Tierra del Fuego) [PDF]

open access: yesTectonics, 2019
AbstractThe Argentine Tierra del Fuego comprises part of the roughly east‐west trending southern end of the Andean Cordillera intensely deformed since the Mesozoic. Mesostructures have been measured in Late Jurassic to Miocene rocks. Taking into account statistical criteria to provide a representative stress tensor from a fault population, this study ...
A. Maestro   +9 more
openaire   +5 more sources

Modeling the growth of stylolites in sedimentary rocks [PDF]

open access: yes, 2012
[1] Stylolites are ubiquitous pressure solution seams found in sedimentary rocks. Their morphology is shown to follow two self-affine regimes. Analyzing the scaling properties of their height over their average direction shows that (1) at small scale ...
Aharonov   +81 more
core   +4 more sources

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