APPL.+INVES.IN EARTHSCI.+MASTERING GEOL
9th Edition
ISBN: 9780137364435
Author: Tarbuck
Publisher: PEARSON
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Textbook Question
Chapter 3.8, Problem 3A
Using the data in Questions 1 and 2, calculate the approximate maximum and minimum velocities of the Pacific plate as it moved over the Hawaiian hot spot in centimeters per year.
Maximum velocity: _____cm/yr
Minimum velocity: _____cm/yr
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Exercise Ten / Geologic Time
177
d. Based on the ages of the rock layers in outcrop 1, identify an unconformity. Remember that an unconformity is
a break in the rock record. Draw a wavy line on the figure to represent the unconformity.
Ginkgo
Period
Ginkgo
Lepidodendron
Dimetrodon
Period
Tyrannosaurus
Calamites
Inoceramus
Period
Lepidodendron
Rhodocrinites
Archimedes
Eurypterus
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Sharks
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Phacops
Agnostus
Outcrop 1
Period
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Ichthyosaurus
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Sharks
Ceratites
Period
Paleolimulus
A Figure 10.17 Sequences of sedimentary rock layers to accompany Question 7.
10.8 Numerical Dating with Radioactivity
■ Explain the principle of radiometric dating, including half-life, parent isotope,
and daughter product.
Radioactivity has provided a reliable means for calculating the numerical (absolute) age of
rocks, a procedure called radiometric dating. Radioactive isotopes, such as uranium-238,
emit particles from their nuclei that we call radiation. Ultimately, the process of decay…
Dike K
H
Fault L
Figure 10.12 Geologic block diagram of a hypothetical area.
C
Youngest
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Oldest
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Which cross section best represents the pattern of sediments deposited on the bottom of a lake as the velocity of the stream entering the lake steadily decreased?
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Chapter 3 Solutions
APPL.+INVES.IN EARTHSCI.+MASTERING GEOL
Ch. 3.1 - Using an atlas or Figure 3.11 for reference, draw...Ch. 3.1 - Use an atlas or your textbook to label the...Ch. 3.2 - Does Figure 3.3A represent a convergent or...Ch. 3.2 - Does Figure 3.38 represent a convergent,...Ch. 3.2 - Does Figure 3.3e represent a convergent,...Ch. 3.3A - Examine the east coast of South America and the...Ch. 3.3A - Examine the east coast of South America and the...Ch. 3.3A - On separate pieces of tracing paper, sketch the...Ch. 3.3B - Using the same two pieces of tracing paper you...Ch. 3.3B - Reassemble the two continents as you did in...
Ch. 3.5 - Figure 3.8 illustrates an idealized distribution...Ch. 3.5 - Figure 3.8 illustrates an idealized distribution...Ch. 3.5 - On Figure 3.8, outline the zone of earthquakes.Ch. 3.5 - Draw a line on Figure 3.8 at a depth of 100...Ch. 3.5 - The elastic rebound theory predicts that...Ch. 3.6 - How many intervals3, 5, or 7of reverse polarity...Ch. 3.6 - Approximately how many years ago did the current...Ch. 3.6 - Did Earth experience normal or reverse polarity...Ch. 3.6 - Did the period of normal polarity, C, bigin 1, 2,...Ch. 3.6 - During the past 4 million years, has each interval...Ch. 3.6 - Based on the pattern of magnetic reversals shown...Ch. 3.7A - On Figure 3.10, identify and mark the periods of...Ch. 3.7A - Using the South Atlantic as an example, label the...Ch. 3.7A - Using the distance scale at the bottom of Figure...Ch. 3.7A - The distances you obtained in Question 3 are for...Ch. 3.7B - North Atlantic: distance =km100,000cm/km=cm Rate...Ch. 3.7B - Pacific: distance =km100,000cm/km=cm Rate of...Ch. 3.7C - Using Figure 3.2, measure the distance from Point...Ch. 3.7C - Divide the distance in centimeters separating the...Ch. 3.7C - Repeat the procedure above to determine the age of...Ch. 3.7C - Based on your answers to Questions 2 and 3, which...Ch. 3.8 - What are the minimum and maximum ages of the...Ch. 3.8 - What is the approximate distance in kilometers...Ch. 3.8 - Using the data in Questions 1 and 2, calculate the...Ch. 3 - The distribution of earthquakes defines the...Ch. 3 - Prob. 2LRCh. 3 - Prob. 3LRCh. 3 - Prob. 4LRCh. 3 - Prob. 5LRCh. 3 - Prob. 6LRCh. 3 - Prob. 7LRCh. 3 - Prob. 8LRCh. 3 - Complete the block: diagrams in Figure 3.12 to...Ch. 3 - Prob. 10LRCh. 3 - List and explain two lines of evidence from this...
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- I need help with part b and c. I don't want an explanation I need the actual graph, because it's hard to understand an explanation without showing what they mean.arrow_forwardI need help with part b and c. I don't want an explanation I need the actual graph preferably broken down, because it's hard to understand an explanation without showing what they mean.arrow_forwardI need help with part b and c I don't know how to draw it.arrow_forward
- 4. What is the geologic range of the fossil shown in Figure 10.15? From the Ordovician period through the Permian period. 5. What is the geologic range of the fossil shown in Figure 10.16? From the Cambrian period through the Permian period. 6. Imagine that you have discovered a rock outcrop that contains the fossils identified in Questions 4 and 5. What is the geologic range of this rock?From theperiod through the period.arrow_forward4. What is the geologic range of the fossil shown in Figure 10.15? From the period through the period5. What is the geologic range of the fossil shown in Figure 10.16? From the period through the period.arrow_forwardACTIVITY 10.6 Types of Fossils Pg 174 1. Refer to Figure 10.13. Which photo(s) (A-1) best illustrate(s) the methods of fossilization or fossil evidence listed below? (Photos/letters may be used more than once.)Permineralization: The small internal cavities and pores of an original organism that are filled with precipitated mineral matter. Photo(s):Cast: The space once occupied by a dissolved shell or other structure that is subsequently filled with mineral matter. Photo(s):Carbonization: Preservation that occurs when fine sediment encases delicate plant or animal forms and leaves a residue of carbon, Photo(s):Impression: A replica of an organism, such as a leaf, left in fine-grained sedimentary rock. Photo(s):Amber: Hardened resin of ancient trees that preserved delicate organisms such as insects. Photo(s):Indirect evidence: Traces of prehistoric life but not the organism itself. Photo(s):arrow_forward
- ACTIVITY 10.7 Fossils as Time Indicators Pgs 175-176Use Figure 10.14, page 175, to complete the following. 1. What is the geologic range of plants that belong to the group Ginkgo?From theperiod through theperiod. 2. What is the geologic range of Lepidodendron, an extinct coal-producing plant?From theperiod through theperiod. 3. Imagine that you have discovered an outcrop of sedimentary rock that contains fossil shark teeth and fossils of Archimedes. In which time periods might this rock have formed?From theperiod through theperiod.arrow_forwardACTIVITY 10.4 Unconformities Pg 1721. Label the angular unconformity and disconformity on Figure 10.10. 2. Identify the types of unconformities in Figure 10.11A and Figure 10.11Barrow_forwardACTIVITY 10.3 Principles of Cross-Cutting and Inclusions Pg 171Figure 10.8 is a geologic cross-section of a hypothetical area. Use it to answer the following questions. 1. Is the igneous intrusion, dike E, older or younger than rock layers A-D? 2. Is fault H older or younger than rock layers A-D? 3. Is fault H older or younger than sedimentary layers F and G? 4. Did fault H occur before or after dike E? Explain how you arrived at your answer. 5. What evidence supports the conclusion that the igneous intrusion labeled sili B is more recent than the rock layers on either side (A and C)? ACTIVITY 10.5 Applying Relative Dating Principles Pg 173Use Figure 10.12 to complete the following. 1. Identify and label the unconformities in Figure 10.12. 2. Is rock layer I older or younger than layer H? What relative dating principle did you apply to determine your answer?Rock layer I isthan layer H.Relative dating principle: 3. Is fault L older or younger than rock layer D? What principle did you…arrow_forward
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