Geodynamic regime of the Charlie Gibbs twin transform fault eastern passive part (North Atlantic)
Year: 2024
Type: article
Abstract: Modern features of the geodynamic regime, defined from neotectonic deformations of the sedimentary cover and seismicity, show that the southern trough of the Charlie Gibbs twin transform fault develops in the transtension mode, and the northern one in the transpression mode. Features of activity in the structure of the sedimentary section upper part were noted in the eastern passive parts of the fault at a distance of at least 150 km from the active rift zone of MAR. Dislocations of normal fault kinematics, signs of increased sedimentation rate and mass transport deposits of landslide processes near the slopes of the trough are manifested in the sedimentary section of the southern trough. Median ridge with folded structures overlain by sediments with angular unconformity is established in the axial part of the northern trough. Faults south of the ridge are interpreted as thrusts. At the present stage, the Northern trough is accompanied by the formation of a piercement structures chain of the median ridge during the compression of deep matter and concomitant deformations of the sedimentary cover.
Authors: S. Yu. Sokolov, A. P. Denisova, I. S. Patina
Institutions: Geological Institute, Lomonosov Moscow State University
Language: English
Subfield: Geology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4405351519