Results 81 to 90 of about 1,461 (149)

Paleostress-field analysis by en-echelon veins in the Atokura Formation, Kanto Mountains, central Japan.

open access: yesThe Journal of the Geological Society of Japan, 2002
関東山地北縁部,跡倉ナップを構成する上部白亜系跡倉層には共役雁行脈が発達する.これを用い,跡倉層中の古応力場を解析した.雁行脈はその形態的特徴により,個々の脈が相似褶曲の形態を呈し,尖端が他の機械的異方面に連続しないもの(Aタイプ)と,Aタイプに比べて規模が大きく,個々の脈がシェブロン褶曲の形態を呈し,尖端が節理に連続するもの(Bタイプ)の2つに区分される.共役雁行脈はAタイプにのみ認められる.Aタイプは主に石英および緑泥石からなり,脆性-延性剪断帯で形成された.Bタイプは方解石および石英を主とし,節理形成後の開口で形成された.共役雁行脈から求めた古応力場は,最大圧縮主応力軸:北西-南東~北北東-南南西方向,水平,中間圧縮主応力軸:ほぼ鉛直,最小圧縮主応力軸:北東-南西~西北西-東南東方向 ...
openaire   +2 more sources

Paleo- stress and strain rates in an intra-arc strike-slip fault, Sierra Nevada, California [PDF]

open access: yes, 2008
Structures and microstructures of the Proto-Kern Canyon fault (PKCF), a 130-km-long dextral strike-slip shear zone of the southern Sierra Nevada batholith, provide constraints on displacement, flow stress, and strain rate during arc formation.
Gans, Phillip B.   +3 more
core  

Recent tectonic and morphostructural evolution of Byers Peninsula (Antarctica): insight into the development of the South Shetland Islands and Bransfield Basin [PDF]

open access: yes
Byers Peninsula forms the western extremity of the Livingston Island (Antarctica) in the continental South Shetland Block. This tectonic block is bounded by the South Shetland Trench to the north, the Bransfield back-arc basin to the south, and extends ...
Alfaro, P.   +5 more
core   +1 more source

The Cenozoic evolution of the Roer Valley Rift System integrated at a European scale [PDF]

open access: yes, 2003
International audienceThe Roer Valley Rift System (RVRS) is located between the West European rift and the North Sea rift system. During the Cenozoic, the RVRS was characterized by several periods of subsidence and inversion, which are linked to the ...
Merle, Olivier   +3 more
core   +4 more sources

QUaternary fault strain INdicators database - QUIN 1.0 - first release from the Apennines of central Italy. [PDF]

open access: yesSci Data, 2022
Lavecchia G   +8 more
europepmc   +1 more source

Development of a seismic source model for probabilistic seismic hazard assessment of nuclear power plant sites in Switzerland: the view from PEGASOS Expert Group 4 (EG1d) [PDF]

open access: yes, 2018
.: We present a seismogenic source model for site-specific probabilistic seismic hazard assessment at the sites of Swiss nuclear power plants. Our model is one of four developed in the framework of the PEGASOS project; it contains a logic tree with nine ...
Burg, Jean-Pierre   +2 more
core  

Neoteetonics of the eastern border of the Madrid basin [PDF]

open access: yes, 1994
[Abstract] An analysis ofthe neotectonic activity and the current stress state of the eastern border of Madrid Basin has been carried ont using structural-methods (fault population analysis), as well as seismological methods. Two stress tensors have been
Giner Robles, J. L.   +2 more
core   +1 more source

In situ Rb-Sr dating of slickenfibres in deep crystalline basement faults. [PDF]

open access: yesSci Rep, 2020
Tillberg M   +5 more
europepmc   +1 more source

Cenozoic brittle tectonics and paleostress fields in the European platform.

open access: yes, 1985
Une analyse de la déformation cassante cénozoïque dans la plateforme européenne a été effectuée entre le massif de Bohême à l'est et la Méditerranée occidentale à l'ouest. Une succession de quatre paléo-champs de contraintes principaux a été caractérisée : (1)une compression NS d'âge éocène.
openaire   +1 more source

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