Results 1 to 10 of about 9,464 (179)

Late Paleozoic basaltic magmatism of Tarom- Masuleh area (western Alborz): whole-rock chemical characteristics and tectonic implications [PDF]

open access: yesپترولوژی, 2021
The Tarom- Masuleh area (western Alborz) exposes considerable Late Paleozoic volcanic rocks. Stratigraphic relationships indicate that the igneous units are of Carboniferous- Permian age.
morteza delavari, Khadijeh Sehhat
doaj   +1 more source

Ground Penetrating Radar of Neotectonic Folds and Faults in South-Central Australia: Evolution of the Shallow Geophysical Structure of Fault-Propagation Folds with Increasing Strain

open access: yesGeosciences, 2022
Using ground penetrating radar (GPR) we investigate the near surface (~0–10 m depth) geophysical structure of neotectonic fault-propagation folds and thrust faults in south-central Australia in varying stages of fold and fault growth.
Schirin Sellmann   +3 more
doaj   +1 more source

Geomorphological Classification of Monogenetic Volcanoes and Its Implication to Tectonic Stress Orientation in the Middle Atlas Volcanic Field (Morocco)

open access: yesLand, 2022
The Middle Atlas Volcanic Field (MAVF) covers an area of 1500 km2, with a total erupted volume of solid products (e.g., Dense Rock Equivalent or DRE) estimated to be more than 80 km3.
Mohammed Benamrane   +3 more
doaj   +1 more source

Scientific overview and historical context of the 1811-1812 New Madrid earthquake sequence

open access: yesAnnals of Geophysics, 2004
The central and eastern United States has experienced only 5 historic earthquakes with Mw 7.0, four during the New Madrid sequence of 1811-1812: three principal mainshocks and the so-called «dawn aftershock» following the first mainshock.
S. E. Hough
doaj   +1 more source

Intraplate Earthquakes in Iraqi Western Desert [PDF]

open access: yesKirkuk Journal of Science, 2010
The seismicity of Iraqi western desert was analyzed. During the period from 1900 to 2004, there occurred about 40 events with magnitude Mw ≥ 3.0.The area was inactive before 1970.This may be attributed to quietness of the area and / or to missing of data
Emad A.M. Al-Heety
doaj   +1 more source

Structure of an intraplate fold-and-thrust belt: The Iberian Chain. A synthesis

open access: yesGeologica Acta, 2018
The Iberian Chain is a complex intraplate fold-and-thrust belt resulting from the convergence between the Eurasian, Iberian and African plates during the late Eocene to the Miocene. The main trend of its contractional structures is NW-SE, but E-W, NE-SW
J. Guimerà
doaj   +1 more source

Improvement in Marine CSEM Imaging for Towed Electromagnetic Receivers Through Multirate Signal Processing and Adaptive Noise Suppression

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Multirate signal processing and adaptive filtering techniques have been widely employed to mitigate noise contamination and enhance the efficiency of data analysis.
Yu Long   +4 more
doaj   +1 more source

A Novel Method for Denoising Lunar Satellite Gravity Anomaly Data Based on Prior Knowledge Deep Learning

open access: yesRemote Sensing
High-resolution lunar gravity anomaly data are of great significance for the study of the lunar crust and lithosphere structure, asymmetric thermal evolution, impact basin subsurface structure and mass tumor genesis, breccia, and magmatism.
Qingkui Meng   +3 more
doaj   +1 more source

Petrochemistry and origin of basalt breccia from Ban Sap Sawat area, Wichian Buri, Phetchabun, central Thailand [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2013
Thailand is usually considered to be controlled by escape tectonics associated with India-Asia collision during theLate Cenozoic, and basaltic volcanism took place in this extensional period.
Phisit Limtrakun   +2 more
doaj  

Coseismic Frictional Heating With Concomitant Hydrothermal Fluid Circulation Revealed by Rock Magnetic Properties of Fault Rocks From the Rupture of the 2008 Wenchuan Earthquake, China

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Coseismic frictional heating and associated hydrothermal fluid circulation play an essential role in the dynamic weakening of seismic faults. However, temperature rise induced by frictional heating during an earthquake is still difficult to constrain ...
Xiuli Yan   +4 more
doaj   +1 more source

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