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The mafic minerals in the TTG rock body, possibly biotite, were weathered, which introduced a brownish coating on the TTG rock surface. Tonalite–trondhjemite–granodiorite (TTG) rocks are intrusive rocks with typical granitic composition (quartz and feldspar) but containing only a small portion of potassium feldspar.
The Moon’s south pole was once covered in an ocean of liquid molten rock, according to scientists. The findings back up a theory that magma formed the Moon's surface around 4.5 billion years ago.
Magma (sometimes colloquially but incorrectly referred to as lava) is found beneath the surface of the Earth, and evidence of magmatism has also been discovered on other terrestrial planets and some natural satellites. [3] Besides molten rock, magma may also contain suspended crystals and gas bubbles.
Porphyry copper deposits represent an important resource and the dominant source of copper that is mined today to satisfy global demand. [6] Via compilation of geological data, it has been found that the majority of porphyry deposits are Phanerozoic in age and were emplaced at depths of approximately 1 to 6 kilometres with vertical thicknesses on average of 2 kilometres. [6]
The Pentagon is aware of reports Wednesday that an American service member was recently detained in Venezuela, a U.S. official told ABC News. The Department of Defense is "working closely" with ...
August 16, 2024 at 10:14 PM. Caitlin Clark looked rested and fresh after a month off in her first game since watching Team USA win Olympic gold. The rookie star scored 29 points with five rebounds ...
Chandrayaan-3 (/ ˌtʃʌndrəˈjɑːn / CHUN-drə-YAHN) is the third mission in the Chandrayaan programme, a series of lunar-exploration missions developed by the Indian Space Research Organisation (ISRO). [ 11 ] The mission consists of a Vikram lunar lander and a Pragyan lunar rover was launched from Satish Dhawan Space Centre on 14 July 2023.
Magmatism. Geological map showing the Gangdese batholith, which is a product of magmatic activity about 100 million years ago. Magmatism is the emplacement of magma within and at the surface of the outer layers of a terrestrial planet, which solidifies as igneous rocks. It does so through magmatic activity or igneous activity, the production ...