Maankuoresta

Maankuoresta is a Finnish term meaning “from the Earth's crust” or “pertaining to the Earth's crust.” In Finnish geology and geochemistry, maankuoresta is used to indicate origin or relation to crustal materials and activities.

The Earth's crust is the outermost solid shell of the planet and is divided into continental crust and oceanic crust. Continental crust is thicker and less dense, while oceanic crust is thinner and more dense. Typical thicknesses are about 30–50 kilometers for continental crust and about 5–10 kilometers for oceanic crust. Crustal rocks commonly include granitic and felsic compositions in the continents and basaltic rocks beneath the oceans.

In scientific usage, maankuoresta describes rocks, samples, or processes originating in the crust, such as maankuoresta geochemistry, crustal isotopic systems, or crustal deformation. The term helps specify that observations relate to crustal materials rather than the mantle or core.

Geological research in Finland often engages with maankuoresta materials to understand the evolution of the Fennoscandian Shield and to assess mineral resources and geohazards. Data from seismic, geochemical, and petrological studies contribute to mapping crustal structure and history in the region.

See also: Earth's crust, lithosphere, plate tectonics, geochemistry, petrology.