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Moon's internal structure Olivine basalt collected by Apollo 15. Thermal state of the Moon at age 100 Ma. [1]Having a mean density of 3,346.4 kg/m 3, [2] the Moon is a differentiated body, being composed of a geochemically distinct crust, mantle, and planetary core.
Earth cutaway from core to exosphere Geothermal drill machine in Wisconsin, USA. Temperature within Earth increases with depth. Highly viscous or partially molten rock at temperatures between 650 and 1,200 °C (1,200 and 2,200 °F) are found at the margins of tectonic plates, increasing the geothermal gradient in the vicinity, but only the outer core is postulated to exist in a molten or fluid ...
The moon is the namesake of Europa, ... which would be unlikely if the ice were solidly attached to the mantle. ... Europa's surface temperature averages about 110 ...
The mantle, in turn, transported it to the surface by convection. [74] The decay of radioactive elements within rocks further heated the core, causing increased differentiation: an inner, iron–iron-sulfide core and a silicate mantle formed. [82] [102] With this, Ganymede became a fully differentiated body. [71]
Weather. 24/7 Help. For premium support please call: ... crust has an average thickness of about 31 miles (50 kilometers), the lunar mantle beneath it reaches about 838 miles (1,350 kilometers ...
The silicate mantle of the Earth's moon is approximately 1300–1400 km thick, and is the source of mare basalts. [4] The lunar mantle might be exposed in the South Pole-Aitken basin or the Crisium basin. [4] The lunar mantle contains a seismic discontinuity at ~500 kilometers (310 miles) depth, most likely related to a change in composition. [4]
Geological studies of the Moon are based on a combination of Earth-based telescope observations, measurements from orbiting spacecraft, lunar samples, and geophysical data. . Six locations were sampled directly during the crewed Apollo program landings from 1969 to 1972, which returned 382 kilograms (842 lb) of lunar rock and lunar soil to Earth [8] In addition, three robotic Soviet Luna ...
Weather. 24/7 Help. ... The mantle plume hotspot that is half the cause of Iceland's intense volcanism (the other half being the Mid-Atlantic Ridge) is believed to have been the cause of the ...