GO141 Park University Introduction To Physical Geology

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Science

GO141

Park University

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I need the answers to questions in my Physical Geology class. I have attached a word document that has questions and pictures of various rocks and minerals. I need the answers to the questions on the worksheet.

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4.1 Rock Inquiry A. REFLECT & DISCUSS Describe the rock below, where it may have formed, and how it may have formed. B. REFLECT & DISCUSS Describe the rock below, where it may have formed, and how it may have formed. 4.2 What Are Rocks Made Of? A. What is the difference between in situ mineral grains and detrital mineral grains? B. REFLECT & DISCUSS Rocks are made of the materials listed below and described on page 115. Below each sample, write the name of every kind of material it contains from the list below. Be prepared to compare your observations with the observations of the other geologists. Mineral grains (in situ) Clasts (detrital minerals) Gravel Silt Glass Mineral grains (detrital) Clasts (rock fragments) Sand Bioclasts Clay 1) 2) 3) 4) 5) 6) 7) 8) 9) 4.3 Rock-forming Minerals A. REFLECT & DISCUSS Refer to FIGURE 4.3 (page 116) and identify each rock-forming mineral below. Write its name below the picture. Be prepared to compare your observations with the observations of the other geologists. 4.4 What Is Rock Texture? A. Review the following list of textures on page 117. Below each sample, write the name of every one of these textures it contains. Glassy Vesicular Fine-grained Coarse-grained Crystalline (heterogranular) Crystalline (equigranular) Clastic (angular) Layered (flat) Clastic (rounded) Layered (foliated) Bioclastic Layered (folded) Clastic (gravely, sandy, silty, clayey) B. Reflect & Discus: Based on the texture(s) and composition of each of the rocks in part A, below each sample, write whether you think it is igneous, sedimentary or metamorphic and why? 1 2 3 4 5 6 7 8 9 10 11 12
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Explanation & Answer

Attached.

Unit 2 Lab- Outline
Thesis Statement: As magma reaches the surface where there is lower pressure, gases dissolved
come out forming the pores and the solidified magma is highly porous hence forming the rock.
I. Rock inquiry
II. What are rocks made of
III. Rock-forming minerals
IV. What is rock texture?


4.1 Rock Inquiry
A. REFLECT & DISCUSS Describe the rock below, where it may have formed, and how it may have formed.

The rock above is most likely scoria. This is because of its dark appearance and the pores on the rock. It may have
formed during magma eruption. As magma reaches the surface where there is lower pressure, gases dissolved come out
forming the pores and the solidified magma is highly porous hence forming the rock.

B. REFLECT & DISCUSS Describe the rock below, where it may have formed, and how it may have formed.

The rock above is a sedimentary rock formed from the colle...


Anonymous
Excellent resource! Really helped me get the gist of things.

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