Results 1 to 10 of about 85,345 (316)

Assessment of tectonic activities of Ghorveh- Dehgolan basin by using geomorphic indices [PDF]

open access: yesجغرافیا و توسعه, 2021
The morpho-tectonic indices of the basin are used to investigate the active tectonics. The study area is part of the Sefidrud basin. In this study, to assess tectonic activities in the Ghorveh- Dehgolan basin, five morphometric indices of the Relative ...
mohammad khalaj
doaj   +1 more source

Fissure Ridges: A Reappraisal of Faulting and Travertine Deposition (Travitonics)

open access: yesGeosciences, 2021
The mechanical discontinuities in the upper crust (i.e., faults and related fractures) lead to the uprising of geothermal fluids to the Earth’s surface. If fluids are enriched in Ca2+ and HCO3-, masses of CaCO3 (i.e., travertine deposits) can form mainly
Andrea Brogi   +4 more
doaj   +1 more source

Geophysical characteristics of the Terror Rift, West Antarctica

open access: yesDizhi lixue xuebao, 2021
In this paper, we investigated the Terror Rift where the last stage of Cenozoic rifting in the West Antarctic Rift System (WARS) took place. The International published and domestic sampled during CHARE seismic reflection profiles are utilized. Combining
ZHANG Qiao, JI Fei
doaj   +1 more source

Deep ductile shear localization facilitates near-orthogonal strike-slip faulting in a thin brittle lithosphere [PDF]

open access: yes, 2020
Some active fault systems comprise near-orthogonal conjugate strike-slip faults, as highlighted by the 2019 Ridgecrest and the 2012 Indian Ocean earthquake sequences.
Ampuero, Jean-Paul   +2 more
core   +1 more source

Discrete Element Modelling of Sedimentation and Tectonics: Implications for the Growth of Thrust Faults and Thrust Wedges in Space and Time, and the Interpretation of Syn-Tectonic (Growth) Strata

open access: yesFrontiers in Earth Science, 2021
Thrust faults, and thrust wedges, are an important part of the surface morphology and structure of many contractional mountain belts. Analogue models of thrust wedges typically provide a map- and/or side-view of their evolution but give limited insight ...
Stuart Hardy   +2 more
doaj   +1 more source

Fault rock heterogeneity can produce fault weakness and reduce fault stability [PDF]

open access: yesNature Communications, 2022
Geological heterogeneity is abundant in crustal fault zones; however, its role in controlling the mechanical behaviour of faults is poorly constrained. Here, we present laboratory friction experiments on laterally heterogeneous faults, with patches of strong, rate-weakening quartz gouge and weak, rate-strengthening clay gouge. The experiments show that
John D. Bedford   +2 more
openaire   +5 more sources

Neogene faulting and volcanism in the Victoria Land Basin of the Ross Sea, Antarctica

open access: yesEarth and Planetary Physics, 2022
The Neogene Terror Rift in the Antarctic Victoria Land Basin (VLB) of the Ross Sea, Antarctica, is composed of the Discovery Graben and the Lee Arch. Many Neogene volcanoes are aligned in the north-south direction in the southern VLB, belonging to the ...
Mei Yue   +9 more
doaj   +1 more source

Controls on Gas Emission Distribution on the Continental Slope of the Western Black Sea

open access: yesFrontiers in Earth Science, 2021
The continental slopes of the Black Sea show abundant manifestations of gas seepage in water depth of <720 m, but underlying controls are still not fully understood.
Michael Riedel   +9 more
doaj   +1 more source

Transform fault earthquakes in the North Atlantic: Source mechanisms and depth of faulting [PDF]

open access: yes, 1988
The centroid depths and source mechanisms of 12 large earthquakes on transform faults of the northern Mid-Atlantic Ridge were determined from an inversion of long-period body waveforms.
Bergman, Eric A., Solomon, Sean C.
core   +2 more sources

Regularities of crustal faulting and tectonophysical indicators of fault metastability

open access: yesГеодинамика и тектонофизика, 2018
The problem of forecasting seismic hazards is discussed. The stress state data characterizing various aspects of brittle failure are reviewed in detail. It is shown that the most convenient tool for analyzing such data is the Mohr stress diagram and the ...
Yu. L. Rebetsky
doaj   +1 more source

Home - About - Disclaimer - Privacy