Lab Report 2 - Lab 2 PDF

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Summary

Lab 2...

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Rocks and the Rock Cycle Due Date _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Date _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

1. The rock samples you encountered while completing this exercise are called hand samples because you can pick them up in your hand and study them. You can also easily examine hand samples with a hand lens, test them for hardness and reactivity to HCI, and feel and heft them. However, some characteristics of each rock group are so diagnostic that you can observe them at a distance and classify the rocks as igneous, sedimentary, or metamorphic. Examine the rock outcrops shown in Figure 2.23 and determine whether each is igneous, sedimentary, or metamorphic.

Outcrop A

Outcrop A: ________________________________ Outcrop B: ________________________________ Outcrop C: ________________________________ Match each of the metamorphic rocks listed below with one possible parent rock from the following list: bituminous coal, shale, limestone, slate, granite, sandstone. METAMORPH IC ROCK

NAME OF PARENT ROCK

Marble: ________________________________ Slate: ________________________________ Phyllite: ________________________________ Gneiss: ________________________________ Quartzite: ________________________________

Outcrop B

Anthracite: ________________________________ 2. Match each term or characteristic with the appropriate rock group. A. Foliated texture

I. Vesicular texture

B. Clastic texture

J. Strata or beds

C. Gneissic texture

K. Felsic composition

0. Chemical rocks

L. Slaty texture

E. Porphyritic texture

M. Glassy texture

F. Lithification

N. Evaporite deposits

G. Alignment of mineral grains

0. Detrital rocks

H. Silt-size particles

Outcrop C

Figure 2.23 Photos to accompany Quest ion 1. (Photo C courtesy of USGS)

Igneous rocks: ________________________________ Sedimentary rocks: ________________________________ Metamorphic rocks: ________________________________

45

46 Applications and Investigations in Earth Science 4. Identify the foliated metamorphic rocks shown in Figure 2.24 and list them in order from lowest to highest metamorphic grade.

A.

lineB.

(Name)

(Name)

line

B--------

A--------

Line

(Rock Group)

(Rock Group)

(Name)

(Name)

C.

D.

(Name)

C. (Name)

(Name)

D. (Name) (Rock Group)

(Rock Group)

Lowest

Highest

Figure 2.24 Photos to accompany Question 4.

E.

_ (Name)

5.

Identify each of the rocks shown in Figure 2.25 and the rock group to which each belongs.

F. ---------(Name)

line (Rock Group)

(Rock Group)

G. (Name)

(Name)

(Rock Group)

(Rock Group)

Figure 2 25 Photos to accompany Question 5...