Search results
Results From The WOW.Com Content Network
In geology, exhumation is the process by which a parcel of buried rock approaches Earth's surface. [1]It differs from the related ideas of rock uplift and surface uplift in that it is explicitly measured relative to the surface of the Earth, rather than with reference to some absolute reference frame, such as the Earth's geoid.
Tectonic uplift is the geologic uplift of Earth's surface that is attributed to plate tectonics. While isostatic response is important, an increase in the mean elevation of a region can only occur in response to tectonic processes of crustal thickening (such as mountain building events), changes in the density distribution of the crust and ...
Tectonic Burial is the deformation of rocks caused by extreme pressure over millions of years. [1] It often causes temperature evolutions and deep burials. [2] Tectonic burial is usually the result of continental collisions or subduction in a region. [3]
The basis of this theory is that erosion of overburden and exhumation of deeply buried rock to the ground surface allows previously compressed rock to expand radially, creating tensile stress and fracturing the rock in layers parallel to the ground surface. The description of this mechanism has led to alternate terms for exfoliation joints ...
Ultra-high-pressure metamorphism refers to metamorphic processes at pressures high enough to stabilize coesite, the high-pressure polymorph of SiO 2.It is important because the processes that form and exhume ultra-high-pressure (UHP) metamorphic rocks may strongly affect plate tectonics, the composition and evolution of Earth's crust.
Formation of a metamorphic core complex. Metamorphic core complexes are exposed areas of deep crust brought to the surface by crustal extension (stretching). [1] They form, and are exhumed, through relatively fast [citation needed] transport of middle and lower continental crust to the Earth's surface [2] in the form of uplifting welts of hot rock and magma. [1]
It said the body was exhumed on April 28. “Not only was her body in a remarkable preserved condition, her crown and bouquet of flowers were dried in place; the profession candle with the ribbon ...
The basin-fill occurs concurrently with the exhumation. Calculations examining sediment infill suggest that differences in core complexes can be controlled by erosion rates and hanging wall resistance of the fault. [9] Tilted blocks are formed under specific crustal conditions, where the lower crust is relatively warm, not hot.