Results 211 to 220 of about 87,357 (239)

Geology of the Achankovil Shear Zone, Southern India

Gondwana Research, 2001
V J Rajesh, M Santosh
exaly   +2 more sources

A Seismic Hazard Map Based on Geology and Shear‐wave Velocity in Rawalpindi–Islamabad, Pakistan

Acta Geologica Sinica - English Edition, 2021
AbstractThe ‘twin cities’ district of Rawalpindi–Islamabad is among the most endangered seismic regions in Pakistan, with the seismic hazard assessed (0.32 g) to intensity IX MMI for a 475‐year return period. A seismic hazard map for Rawalpindi–Islamabad is presented herein, based on 85 shear‐wave velocity (VS) profiles obtained through geophysical H/V
Sarfraz KHAN, Muhammad WASEEM, M. Asif KHAN   +2 more
openaire   +1 more source

Shearing Phenomena at High Pressure of Possible Importance for Geology

The Journal of Geology, 1936
Various phenomena of plastic flow under shearing stress are studied at confining pressures up to $50,000 kg./cm.^2$ The shearing stress required to produce flow may-increase many fold beyond its normal value. There may be either "hardening" or "softening" phenomena while a steady state is being reached.
openaire   +1 more source

Seismic soil classification of Italy based on surface geology and shear-wave velocity measurements

Soil Dynamics and Earthquake Engineering, 2019
Abstract During an earthquake the seismic wave amplification related to local site conditions can have a significant impact on the ground motion. In order to account for these local effects some proxies for the soil characteristics exist; e.g., the average shear-wave velocity of the upper 30 m ( V S , 30 ) , or the equivalent ...
Forte, Giovanni, Chioccarelli, Eugenio, De Falco, Melania, Cito, Pasquale, Santo, Antonio, Iervolino, Iunio   +5 more
openaire   +2 more sources

Shear Wave Velocity‐ and Geology‐Based Seismic Microzonation of Port‐au‐Prince, Haiti

Earthquake Spectra, 2011
A seismic site classification microzonation for the city of Port‐au‐Prince is presented herein. The microzonation is based on 35 shear wave velocity ( V S ) profiles collected throughout the city and a new geologic map of the region. The V
Brady R. Cox, Jeff Bachhuber, Ellen Rathje, Clinton M. Wood, Ranon Dulberg, Albert Kottke, Russell A. Green, Scott M. Olson   +7 more
openaire   +1 more source

Gently sloping shear zones in the Belomorian Mobile Belt: Geology, structure, and P–T parameters

Geotectonics, 2016
The Belomorian Mobile Belt (BMB) in northern Karelia mostly consists of gently sloping shear zones, whose gneisses and migmatized amphibolites and blastomylonites are typically thinly banded, with their banding consistently dipping north- and northeastward.
V. M. Kozlovskii, V. V. Travin, D. I. Korpechkov, M. N. Zaitseva, E. B. Kurdyukov, A. V. Travin, L. B. Terent’eva, V. M. Savatenkov   +7 more
openaire   +1 more source

Geology and timing of dextral strike-slip shear zones in Danmarkshavn, North-East Greenland Caledonides

Geological Magazine, 2006
The North-East Greenland eclogite province is divided into a western, central and eastern block by the sinistral Storstrømmen shear zone in the west and the dextral Germania Land deformation zone in the east. A family of steep, NNW-striking dextral mylonite zones in the Danmarkshavn area are geometrically and kinematically similar to the ductile ...
C. SARTINI-RIDEOUT, J. A. GILOTTI, W. C. McCLELLAND   +2 more
openaire   +1 more source

Geology of the shear-hosted Brookbank gold prospect in the Beardmore–Geraldton belt, Wabigoon subprovince, Ontario

Canadian Journal of Earth Sciences, 2007
The Beardmore–Geraldton belt consists of steeply dipping, intercalated panels of metavolcanic and metasedimentary rocks along the southern margin of the granite–greenstone Wabigoon subprovince in the Archean Superior Province, Ontario. It is an important past-producing gold belt that includes classic epigenetic iron-formation-hosted deposits near ...
Jerry C DeWolfe, Bruno Lafrance, Greg M Stott   +2 more
openaire   +1 more source

Geology of the Duncan Canal shear zone:Evidence for Early to Middle Jurassic deformation of the Alexander terrane, southeastern Alaska

Geological Society of America Bulletin, 1990
The Duncan Canal shear zone, central southeastern Alaska, disrupts and penetratively deforms Devonian, Pennsylvanian, and Upper Triassic strata of the lexander terrane. The deformation is interpreted to have occurred within a regime of right-lateral shear during Early or Middle Jurassic time.
WILLIAM C. MCCLELLAND, GEORGE E. GEHRELS
openaire   +1 more source

The 3D shear experiment over the Natih field in Oman. Reservoir geology, data acquisition and anisotropy analysis

Geophysical Prospecting, 1999
This paper describes a large‐scale reservoir characterization experiment carried out in Oman in 1991 which comprised the acquisition, processing and interpretation of a 28.4 km2 3D multicomponent seismic experiment over the Natih field. The objective of the survey was to obtain information on the fracture network present in the Natih carbonates from ...
null Potters, null Groenendaal, null Oates, null Hake, null Kalden   +4 more
openaire   +1 more source