Detachment fault - Wikipedia
A detachment fault is a gently dipping normal fault associated with large-scale extensional tectonics. [1] Detachment faults often have very large displacements (tens of km) and juxtapose unmetamorphosed hanging walls against medium to high-grade metamorphic footwalls that are called metamorphic core complexes.
Detachment Fault - an overview | ScienceDirect Topics
Detachment faults are normal faults that have accumulated offsets on par with the thickness of the brittle layer they dissect (∼10 km).
Décollement - Wikipedia
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 the rocks above and below the fault.
Central role of detachment faults in accretion of slow ... - Nature
Oct 9, 2008 · Oceanic detachment faults are associated with one of two contrasting modes of accretion at mid-ocean ridges and can accommodate extension for millions of years.
How transform fault shear influences where detachment faults
Jun 7, 2023 · Oceanic detachment faults represent an end-member form of seafloor creation, associated with relatively weak magmatism at slow-spreading mid-ocean ridges.
7.7: Geologic Structures - Geosciences LibreTexts
A detachment fault is a particular kind of normal fault that generally dips at a low angle. It separates rocks that were deep in the crust and ductile (granite and gneiss) from rocks of the upper crust (sedimentary or volcanic) that were brittle.
An intermittent detachment faulting system with a large ... - Nature
Sep 24, 2021 · Introduction. Accretion at mid-ocean ridges (MOR) has been documented to occur either in a symmetrical or asymmetrical mode 1, 2. Symmetrical accretion is most often dominated by magmatic...
1.11: Faults - Geosciences LibreTexts
Fault-propagation folds form as faults develop, and combine some of the features of fault-bend and detachment folds. As a fault develops there will be a fault tip at the point separating slipped rock from rock that has not yet slipped.
Detachment, a faulting process (Décollement) | SpringerLink
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.
Development of detachment fault system associated with a …
Detachment fault system associated with a mature metamorphic core complex (MCC) is still not well understood. Using high-resolution 3D seismic data, we analyse the geometries and kinematic development of detachment fault system associated with a mature and exhumated MCC in the northern South China Sea rifted margin, with an emphasis on the MCC-associated faults …