19. A glacial erratic is
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Transcribed Image Text:19. A glacial erratic is
a. Asymmetric bedrock bumps or hills that were shaped by glacial movement
b. stones and rocks that were transported by a glacier and usually left in open fields
c. dirt and boulders that build up from glacial motion to form hills
d. glaciers that move in erratic patterns and appear to be moving up a hill
20. metamorphic rocks are categorized by
a. thin layers of rock that form little lines moving horizontally
b. are crystalline and often have a "squashed" (foliated or banded) texture
c. holey rocks that are very light
d. magnetic stones that are very heavy
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