42. The law of crosscutting relationships is illustrated by the cross sections below, which show two igneous dikes and a mass of granite. Which field relationship is logically not possible? (A) Granite lspa (B) Granite Sone2by bit weib PES LOT (C) Granite (D)

Applications and Investigations in Earth Science (9th Edition)
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Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
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Chapter1: The Study Of Minerals
Section: Chapter Questions
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For 42 it is between c or d but I'm not sure
42. The law of crosscutting relationships is illustrated by the cross sections below, which show
two igneous dikes and a mass of granite. Which field relationship is logically not possible?
W07
(A)
Granite
Law or Principle
(A) cross-cutting
relationships
780
(B) original
horizontality
(C) lateral continuity
(C)
//
Granite
Granite
Questions 43 and 44 refer to the cross section below. The black band represents a dike of
basaltic composition.
(D) superposition
(B)
43. Which stratigraphic law or principle correctly interprets the relationships in the cross
section?
Interpretation
dike intruded before the canyon
was eroded;
dike was once a sill but was later
tilted;
dike can be correlated with layer
B;
dike was intruded before layer B
was deposited.
(D)
A
(B) identification of an index fossil in layer B;
(C) isotopic age dating of zircon crystals in layer C;
(D) isotopic age dating of quartz crystals in the basaltic dike.
A A
A
C
B
44. Which one of the following methods would yield the best age for sedimentary layer B?
(A) identification of an index mineral in layer B;
Transcribed Image Text:42. The law of crosscutting relationships is illustrated by the cross sections below, which show two igneous dikes and a mass of granite. Which field relationship is logically not possible? W07 (A) Granite Law or Principle (A) cross-cutting relationships 780 (B) original horizontality (C) lateral continuity (C) // Granite Granite Questions 43 and 44 refer to the cross section below. The black band represents a dike of basaltic composition. (D) superposition (B) 43. Which stratigraphic law or principle correctly interprets the relationships in the cross section? Interpretation dike intruded before the canyon was eroded; dike was once a sill but was later tilted; dike can be correlated with layer B; dike was intruded before layer B was deposited. (D) A (B) identification of an index fossil in layer B; (C) isotopic age dating of zircon crystals in layer C; (D) isotopic age dating of quartz crystals in the basaltic dike. A A A C B 44. Which one of the following methods would yield the best age for sedimentary layer B? (A) identification of an index mineral in layer B;
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