Crustal

The current maps are based on the assumption that most of the region’s crustal deformation is contained in large offshore earthquakes, without a significant onshore component.

About nine-tenths of crustal rocks contain silicon in the form of or other silicates.

As a result of remelting of basaltic oceanic crust due to subduction, the cores of the first continents grew large enough to withstand crustal recycling processes.

A subduction zone is a type of contact between different crustal plates where heavier crust slides below lighter crust.

Beginning about 200 million years ago, forces within the Earth's mantle began to separate the lands of the Southern Hemisphere, and a crustal plate supporting both India and Sri Lanka moved toward the northeast.

Crustal thickening occurred due to Laramide compression.

Guo, Z., and M. Wilson (2012) The Himalayan leucogranites: Constraints on the nature of their crustal source region and geodynamic setting.

However, there is little evidence of formation of palimpsests through viscoelastic crustal relaxation, unlike on other large icy moons.

Instead, bromine exists exclusively as bromide salts in diffuse amounts in crustal rock.

It does not currently have a global dipolar magnetic field and only has crustal magnetization, probably acquired early in lunar history when a dynamo was still operating.

Tectonic lithosphere plates consist of lithospheric mantle overlain by either or both of two types of crustal material: oceanic crust (in older texts called sima from silicon and magnesium ) and continental crust ( sial from silicon and aluminium ).

The Appalachian Highland owes its oblique northeast-southwest trend to crustal deformations which in very early geological time gave a beginning to what later came to be the Appalachian mountain system.

They also provided a driving force for crustal deformation, and a new setting for the observations of structural geology.

Together, the evidence for crustal spreading at bands and convergence at other sites marks the first evidence for plate tectonics on any world other than Earth.

Within the Earth's crust a second source is neutrons produced primarily by spontaneous fission of uranium and thorium present in crustal minerals.