Using the diagram at right, which of three index minerals would you cipate to form nearest to an igneous usion near the Earth's surface during ntact metamorphism? kyanite; sillimanite; ) andalusite. -) All three minerals would be present. 7. Which mineral would be most likely resent in an accretionary prism (the ediments that get folded up near the
Using the diagram at right, which of three index minerals would you cipate to form nearest to an igneous usion near the Earth's surface during ntact metamorphism? kyanite; sillimanite; ) andalusite. -) All three minerals would be present. 7. Which mineral would be most likely resent in an accretionary prism (the ediments that get folded up near the
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:16. Using the diagram at right, which of
the three index minerals would you
anticipate to form nearest to an igneous
intrusion near the Earth's surface during
contact metamorphism?
(A) kyanite;
(B) sillimanite;
(C) andalusite.
(D) All three minerals would be present.
17. Which mineral would be most likely
present in an accretionary prism (the
sediments that get folded up near the
surface in a subduction zone)?
(A) kyanite;
(B) sillimanite;
(C) andalusite.
(D) All three minerals would be present.
Rock
name
Mineral
occurrence
Shale
Clay
Metamorphism
of pelitic rock
aissaid
18. Using the chart below, which minerals would not be found in a gneiss?
(A) muscovite (C) biotite
(B) quartz
(D) sillimanite
19. Which of the following would be a good index mineral for a slate?
(A) quartz
(C) Silimanite
(B) Garnet
(D) chlorite
Slate Phyllite Schist
Chlorite
Kyanite stable
8
01.0
8
8:8
Muscovite
Biotite
B
40
8
od
Quartz/Feldspar
Andalusite stable
Garnet
temperature
Staurolite
Kyanite
Gneiss
Sillimanite
Sillimanite stable
20. Which statement about radioactive decay is correct?
(A) You cannot predict when a particular parent atom will decay, but only the average behavior
of a very large population of parent atoms.
(B) All of the radioactive isotopes in nature have exactly the same half-life, which is what makes
the isotopic clock so accurate.
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