Use the geologic cross sections below. Place letters in the lines along the righ

Q: Use the geologic cross sections below. Place letters in the lines along the righ

Fig1 Youngest F R B K N S A J D M O H C L G P E Oldest Fig2 Younger G H I R A B C D L F E M S J K Oldest R is angular unonfirmity S is Non confirmity Fig3 Younger J R T L B N D F C Z K A G C M Oldest Q1 principle of superposition Q2 cross cutting relation Q3 two times. Because 2 angular unonfirmity present Hit like if answer was helpful :)

ID: 115846 • Letter: U

Question

Use the geologic cross sections below. Place letters in the lines along the right side of the cross section to indicate the relative ages of the rock units and other features (unconformities, fault) from oldest (first) to youngest (last). In the 1st figure below, all rock units area sedimentary except for units A and E, which are intrusive igneous rocks. H represents a fault. The black squiggly lines represent unconformities, and the dark stippled pattern adjacent to intrusive igneous rocks represents a zone of contact metamorphism, created before the magma cooled.

Youngest _____

_____

Oldest _____

The second figure below is a geologic cross section of the Grand Canyon. All rock are sedimentary except, unit F and J, which are intrusive igneous rocks. Unit K is a metamorphic rock. And letters R and S represent unconformities. Be sure to label the type of unconformity below (Read about the different types of unconformity in Section 9.3)

Youngest _____

_____

Oldest _____

What type of unconformity is R? _________ What type of unconformity is most of S? _____________

See the vertical cross section below. Indicate the relative ages of various rock bodies by placing the letters on the blanks at the right of the figure, from oldest to youngest. Note Rocks B and C are igneous intrusions with the dark XXXX pattern outside the intrusive rock indicating contact effects caused by contact metamorphism. Letters F and Z represent faults (15 pts). This cross section is a difficult one. Be sure to pay attention to the faults.

Youngest _____

_____

Oldest

XXXX=Contact Metamorphism

I. Name the principle used to determine the relative age between Rock L and Rock T : ____________________________________

II. Name the principle used to determine the relative age between Rock B and Rock N: ___________________________________

III. Use the principle of original horizontality to determine the minimum number of times the rocks in this area have been tilted? Circle One: 0 1 2 3 4 5

Youngest _____

_____

Oldest _____

Explanation / Answer

Fig1

Youngest

Oldest

Fig2

Younger

Oldest

R is angular unonfirmity

S is Non confirmity

Fig3

Younger

Oldest

Q1 principle of superposition

Q2 cross cutting relation

Q3 two times. Because 2 angular unonfirmity present

Hit like if answer was helpful :)

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Use the geologic crow sections below. Place letters in the lines along the right

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Use the geologic cross sections below. Place letters in the lines along the righ

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