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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Gurmeet Singh posted an Question
January 10, 2021 • 03:40 am
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30 points
30 points
- IIT JAM
- Geology (GG)
On earth, clay minerals are the most common products of weathering samples from the moon do not contain any clay minerals. why? why are some granite bodies exte
On Earth, clay minerals are the most common products of weathering Samples from the Moon do not contain any clay minerals. Why? Why are some granite bodies extensively jointed, while others are essentially joint free? Actvat
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Rahul kumar Best Answer
Answer: Samples from moon don't contain any clay because weathering is not happening on moon. You may know that Moon has no atmosphere and active fluid. Due to absence of atmosphere and fluid weathering processes are very insignificant on moon's surface and hence clay is not found on moon. The magma cools very slowly to produce the granite rock. That cooling, however, does not produce granite joints. Extreme stresses come afterwards when regional pressures act to squeeze, twist, and pull apart the body of magma until it cracks making the fractures or joints. So, presence or absence of regional pressure governs whether a granite will be jointed or not.
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