Décollement - Wikipedia
网页Décollement (from French décoller 'to detach from') is a gliding plane between two rock masses, also known as a basal detachment fault. Décollements are a deformational structure, resulting in independent styles of deformation in …
Late Mesozoic–Cenozoic décollement structure and its deep geological …
网页2009年5月10日 · Décollement structures are important geological features that signify simple shear deformation resulting from the gliding and displacement of two high viscosity rock units along an adjacent low viscosity rock unit.
Decollement - an overview | ScienceDirect Topics
网页The décollement is defined as a 20–40 m thick interval of scaly fabric (Moore et al., 1998). From: Regional Geology and Tectonics: Principles of Geologic Analysis, 2012
Influence of Overlapping décollements, Syntectonic …
网页2018年7月17日 · Contractional deformation in the Kuqa fold-and-thrust belt (southern foreland of the Tian Shan Mountains, NW China) is recorded by well-preserved syntectonic continental sequences. In addition, its structural evolution was strongly controlled by synorogenic salt (Eocene in age) and presalt décollements with varying spatial distribution.
Décollements, Detachments, and Rafts in the Extended Crust of …
网页2019年5月8日 · Key Points. We investigate the crustal structure of the Dangerous Ground, southern South China Sea, using multichannel and refraction seismic data. Extensional deformation localizes on a 10–15-km offset crustal detachment thinning the …
Detachment, a faulting process (Décollement) | SpringerLink
网页Detachment is a faulting process in which a large rock mass, usually sedimentary, becomes detached from the rocks beneath and independently moves laterally a great distance, which is typically measured in miles. Gravity is an essential but not necessarily exclusive element of the mechanism of emplacement.
Décollement - SpringerLink
网页Décollement is French and means ‘detachment, coming unglued.’ It is used for phenomena involving bedding plane slippage or slippage on incompetent layers and thus describes a ubiquitous set of phenomena, some of which are also labeled by terms such as detachment faulting, disharmonic folding, mechanical decoupling, bedding plane faulting ...
Mechanism of décollement formation in subduction zones
网页2011年12月1日 · Décollement formation in well-accreted subduction zones has been explained by a pre-existing weak layer and high-pore pressure in the sediment (e.g. Moore et al. 1998). High-pore pressure is assumed to occur at the bottom of the thicker incoming sediment, whose permeability is reduced by consolidation (Saffer & Bekins 2006).
网页The decollement separates undeformed material in its footwall from the system of "imbricate" (meaning stacked like shingles) thrust faults that deform and thicken the hangingwall material. The decollement also serves as the fault along which the entire fold and thrust belt is translated towards the undeformed material in front of
Late Mesozoic–Cenozoic décollement structure and its deep geological …
网页2009年5月10日 · Data from seismic reflection profiles, drilling, stratigraphy, structural deformation studies and physical rock properties reveal the existence of décol1ement structures in both shallow and deep ...