Download SGBAU BSc 2019 Summer 3rd Sem Geology Old Question Paper

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B.Sc. (Part-II) Semester-III Examination

3S : GEOLOGY (Old)

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Time : Three Hours] [Maximum Marks : 80

Note : (1) All questions are compulsory.

(2) Draw well labelled diagrams wherever necessary.

1. (A) Fill in the blanks :-- 2
   1. Mineral bodies of elongated or tubular shape deposited in pre-existing fissures are known as __________
   2. The Trilobites are divided into __________

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   3. Worthless material associated with an ore mineral is __________
   4. The constant proportion in which the two constituents simultaneously crystallise is called __________
2. (B) Choose the correct alternatives :— 2
   1. Number of segments in Thorax : (a) 2-4 (b) 3-6 (c) 3 (d) None of the above
   2. The outer wall of corallite is known as : (a) Theca (b) Epitheca (c) Septa (d) Mesenteries

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   3. Primary Deposits of ore mineral are also known as : (a) Supergene (b) Typogene (c) Tenor (d) None of the above
   4. The region in which the rate of crystallization is slow is called as : (a) Metastable (b) Labile (c) Solidous (d) None of these
3. (C) Answer the following in ONE sentence :— 4
   1. What is stock works ?
   2. What are epigenetic deposits ?

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   3. What is triple point ?
   4. What is Septa ?

2. Explain the following :— 12

1. Tenor of ore

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2. Metallogenic epoch and provinces
3. Ore forming mineral.

OR

1. Hydrothermal deposits
2. Early Magmatic Deposits

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3. Describe the oxidation and supergene enrichment deposits. 12

OR

Describe various types of mechanical concentration deposits.

4. Explain the following : 12

1. Three component system

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2. Eutectic
3. Concept of phase, component and system.

OR

1. Mixed crystal
2. One component system

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3. Phase rule

5. Explain the following : — 12

1. Lamprophyre and their equivalents
2. Gabbro-Anarthosite-Peridotite
3. Distribution of igneous rock in space and time.

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OR

1. Variation Diagram
2. Consanguinity
3. Kindreds of Igneous rock.

6. Describe morphology, classification and geological distribution of class foraminifera. 12

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OR

Describe morphology, classification and geological distribution of class Echinodermata.

7. Explain the following : 12

1. Thorax
2. Morphology of Anthozoa

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3. Application of paleontologic data.

OR

1. Apical disc
2. Classification of Anthozoa
3. Facial suture in trilobita.

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