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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Ishita Das posted an Question
December 27, 2020 • 18:27 pm
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30 points
30 points
- IIT JAM
- Geology (GG)
Comb structure with 'symmetrical banding' is formed by
Comb structure with 'symmetrical banding' is formed by (A) Early magmatic process (B) Hydrothermal process (C) Chemical sedimentary process (D) Residual concentration process
2 Answer(s)
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Rahul kumar
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Answer (B) Hydrothermal processes Comb structure is formed as a result of hydrothermal fluid flow in any fissure. These structures are associated with late magmatic hydrothermal fluids
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Answer given is chemical sedimentary process. It's wrong then right?
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Thank you sir
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Saurabh 1 Best Answer
Comb structure is most probably related to Hydrothermal process.....Related to cavity filling deposits in which prismatic crystals found to be growing from opposite sides of a fissure symmetrically towards centre(It was given this unsual name just because it resembles the teeth of a comb, that we use in daily life).... It seems easy to understand this comb structure when you consider the comb you use daily, just look at the euhedral teeth directed symmetrically from the common line towards the fissure to fill the gap..