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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Shivam Sharma posted an Question
September 07, 2020 • 21:49 pm
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30 points
30 points
- CSIR NET
- Earth Sciences
Q.12 aplutonic rock consisting only of plagioclase, pyroxene and hornblende as major minerals is known as (a) dunite (c)granite (b) lherzolite (d) diorite q.13
Q.12 Aplutonic rock consisting only of plagioclase, pyroxene and hornblende as major minerals is Known as (A) dunite (C)granite (B) lherzolite (D) diorite Q.13 Match the feature in Group I with appropriate taxon in Group II. Group I P. Monomyarian Q. Deltidial plates Group II 1. Echinoidea 2. Anthoz0a 3. Pelecypoda 4. Brachiopoda R. Corona S. Epitheca (A) P-3, Q-4, R-1, S-2 (C)P-4, Q-3, R-2, S-1 (B) P-4, Q-2, R-1, S-3 (D) P-3,Q-4, R-2, S-1 GG-2/24 A Q.14 Anormal fault has a dip of 45" towards east, and a throw of 100 metres. The heave of the fault in metres) is (A) 50 (B) 100 )200 (D) 400
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Rahul kumar
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12. (D) Diorite; Diorite is an intrusive igneous rock composed principally of the silicate minerals plagioclase feldspar, biotite, hornblende, and/or pyroxene. Q13(A) Monomyarian- Pelecypoda Deltidial plates- Brachiopoda Epitheca- Anthozoa Corona- Echinoid Q14 (B) 100 meters For normal fault dipping at 45 degrees the value of heave and throw will be same
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Sajan sarthak Best Answer
12.Diorite is usually composed of sodium-rich plagioclase with lesser amounts of hornblende, biotite, and pyroxene minerals. It usually contains little if any quartz. This makes diorite a coarse-grained rock with a contrasting mix of black and white mineral grains. 13. 1st answer 14.heave 100