The Geology of the Moon

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The Geology of the Moon Approximately 4.5 billion years ago a large asteroid struck Earth and thus resulted in the Moon. This impact theory suggests that the collision ejected raw materials which in time became the Moon. With the Moon having no significant atmosphere, it can reserve a good record of the impact history. This information can provide geologists with clues to the history of the Earth. The crust of the Moon is composed of a variation of primary elements, including uranium, oxygen, thorium, potassium, silicon, magnesium, iron, titanium, calcium, aluminum and hydrogen. The Moon exhibits many same materials and characteristics as early Earth. Moon rocks and cores that the Apollo missions yielded back to Earth proved the Moon to be covered with ancient basaltic lava flows. The Moon’s surface is covered by a dusty outer rock layer called regolith. The Moon shows considerable evidence of past volcanic activity. Some other features seen on the Moon include lava tubes, lava channels, domes and basaltic plains. Some lava flows have been measured to be over 600 kilometer long. Though small, the Moon shows some evidence of tectonism occurring around 2.5 billion years ago. Very little alteration has occurred to the very youngest of craters. This tells geologist that since that time the surface is tectonically inactive. Plate tectonic expansion is believed to be related to region internal heating. Long flows of basaltic extrusion show the age of tectonic features. The albedo swirls are believed to be the result of lunar crustal magnetic fields. The Moon’s magnetic field is extremely small comparatively to the Earth’s. Scientists are studying the magnetic measurements of the Moon’s iron core. These measurements give evidence of the electrical conductivity, which gives a great deal of

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