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Download SGBAU BSc 2019 Summer 2nd Sem Geology Igneous Sedimentary n Metamorphic Petrology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 2nd Sem Geology Igneous Sedimentary n Metamorphic Petrology Previous Question Paper

This post was last modified on 10 February 2020

This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university


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B.Sc. (Part—I) Semester—II Examination

GEOLOGY (New)

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(Igneous, Sedimentary and Metamorphic Petrology)

Time : Three Hours] - [Maximum Marks : 80

Note :— (1) All the questions are compulsory.

(2) Draw well labelled diagrams wherever necessary.

  1. (A) Fill in the blanks :
    1. Rocks crystallized at great depth are called — Igneous rocks.
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    3. Thermal metamorphism is due to a factor.
    4. —— is deposits built at mouth of streams usually triangular in shape.
    5. The felsic minerals in igneous rock are — color and in density.
    2
  2. (B) Choose the correct alternatives :
    1. The silica content is less than 45 % then rock is known as :
      1. Basic rock
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      3. Ultrabasic rock
      4. Intermediate rock
      5. Acidic rock
    2. Gneiss is :
      1. Igneous rock
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      3. Sedimentary rock
      4. Metamorphic rock
      5. Ore
    3. Why basalt is fine grained than gabbro ?
      1. Basalt has mafic composition
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      3. Gabbro has mafic composition
      4. Basalt formed from quick cooling of magma
      5. Gabbro formed from quick cooling of magma
    4. The particles or grain size of gravel :
      1. 0.1 mm to 2 mm
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      3. More than 2 mm
      4. Less than 1 mm
      5. 0.01 to 0.1 mm
    2
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  4. (C) Answer the following in one or two sentences :
    1. What is metamorphic rock ?
    2. What is rudaceous rock ?
    3. What is delta formation ?
    4. What is phase rule ?
    4
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  1. What is texture ? Describe in detail the various textures in igneous rock. 12

    OR

    What is igneous rock ? Describe in detail the structures in igneous rock. 12

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  1. Explain the following :
    1. Mineralogical character of basalt. 4
    2. Assimilation. 4
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    4. Tabular classification of igneous rock. 4

    OR

    1. Discontinuous reaction series. 4
    2. Characteristic of felsic and mafic minerals. 4
    3. Fractional crystallization. 4
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  1. Describe in detail ternary system of diopside, albite and anorthite. 12

    OR

    Describe in detail one component system of augite and quartz. 12
  1. Explain the following :
    1. Flood plain deposits. 4
    2. Stratification. 4
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    4. Clastic sedimentary rocks. 4

    OR

    1. Graded Bedding. 4
    2. Types of dunes. 4
    3. Non-clastic sedimentary rocks. 4
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  1. Explain the following :
    1. Dynamic metamorphism 4
    2. Palimpsest or relict texture, 4
    3. Maculose structure. 4

    OR

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    1. Thermal metamorphism. 4
    2. Agents of metamorphism. 4
    3. Foliated and non-foliated metamorphic rock. 4
  1. Explain the following
    1. Conglomerate. 4
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    3. Autometamorphism. 4
    4. Organic deposits of sedimentary rock. 4

    OR

    1. Stress and anti-stress minerals 4
    2. Limestone. 4
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    4. Hornblende schist. 4

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This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university