GeoTours -- Getting Started -- You need to download from both Google Earth TM an
ID: 298691 • Letter: G
Question
GeoTours -- Getting Started -- You need to download from both Google EarthTM and the kmz file from wwNorton
Go to this address: http://wwnorton.com/college/geo/essgeo4/geotours.aspx
Click on “download this file” to download GeoTours.kmz which is the file which will run the GeoTours problems on Google.EarthTM By downloading Geotours.kmz you acknowledge that it was created solely to accompany Steve Marshak's Essentials of Geology and is limited to use with only Steve Marshak's Essentials of Geology and may not be reproduced, stored in a retrieval system, or transmitted in any form by any means for any other purpose without the written permission of the publisher.
Follow the instruction to download Google EarthTM
When you double-click on GeoTours.kmz in your file directory you will start Google EarthTM. Then click on Temporary Places, then Geotours.kmz, then Geotours, then Section 2, then Geotour Worksheets.
Then open the Geotour folder you want to explore!
Rock Layers and Monoclines, Circle Cliffs, UT (Worksheet J; Problem 3)
11. 3a: The Circle Cliffs area allows us to not only look at the ages of some of the different rock layers exposed in the Colorado Plateau, but to also explore a geologic structure that is commonly associated with the Colorado Plateau area: the monocline. The Circle Cliffs erode into the monocline that forms the Waterpocket Fold of Capitol Reef NP in Utah.
Turn on the “Geologic Map of Circle Cliffs, UT” map overlay and locate the flat irons of Jurassic Kayenta and Wingate on the east and west sides of the Circle Cliffs area (placemarks 3a-i and -ii are two representative flat irons on the different limbs of the fold). Monoclines typically have a steeply tilted fold limb (forelimb) and then a shallowly dipping (sometimes sub-horizontal) backlimb. Which placemark corresponds to the steep forelimb?
a. 3a-i
b. 3a-ii
12. 3b: Both monoclines and anticlines uplift and deform rock layers such that when eroded, certain ages of rocks are exposed in the center of the structure relative to the flanking limbs. What are the relative ages of the rocks exposed in the Circle Cliffs area (placemark Problem 3b)?
a. older rocks are exposed in the center and younger rocks in the flanking flat irons
b. younger rocks are exposed in the center and older rocks in the flanking flat irons
Paleogeography of the Earth (Worksheet K: Problem 1)
13. 1a: Check the “Global Paleogeographic Model” folder in the Worksheet 11 folder and make the entire folder semi-transparent. Be sure to read the Instructions concerning the animation; I recommend using the “Step Forward” button.
Turn on the latitude and longitude lines (View > Grid) and “Borders and Labels” in the Layers panel. Now, play the time animation through several times and rotate the globe to watch the animation from different perspectives. You also can manually play the animation by grabbing the right part of the time slider and moving it. Leave this folder checked as you answer the following questions.
Check and double-click placemark Problem 1a. Approximately 600 Ma, the continents were combined into one huge supercontinent that was mostly over what present-day ocean
a. Atlantic
b. Pacific
c. Indian
d. Arctic
14. 1b: Check and double-click placemark Problem 1b. Approximately 460 Ma, were the landmasses predominantly in the northern or southern hemisphere?
a. northern
b. southern
15. 1d: Check and double-click placemark Problem 1d. Watch the landmass in the center of the view as the animation goes from Problem 1c to 1d (do this a couple of times to study it carefully). This landmass will become North America. During this time period, it is growing by accreting terranes to its margins. What kind of plate tectonic boundary is responsible for these series of mountain-building events?
a. transform
b. divergent
c. convergent
16. 1e: Check and double-click placemark Problem 1e. A major continent-continent collision is occurring to form what supercontinent? (Hint: check out the timing of the supercontinents.)
a. Rodinia
b. Pangaea
c. Laurentia
d. Gondwana
17. 1f: Check and double-click placemark Problem 1f. What mountain belt does this convergence form? (Hint: check out the age of the mountain chains.)
a. Himalayas
b. Ediacarans
c. Appalachians/Caledonides
18. 1g: Check and double-click placemark Problem 1g. When did the supercontinent start rifting apart?
a. 350-300 Ma
b. 280-250 Ma
c. 220-160 Ma
d. 100-50 Ma
19. 1h: Check and double-click placemark Problem 1h. When did South America and Africa separate?
a. 120-105 Ma
b. 220-160 Ma
c. 100-50 Ma
d. 50-100 Ma
20. 1i: Check and double-click placemark Problem 1i. Approximately how long did it take India to travel from Antarctica to collide with Asia?
a. ~150 m.y.
b. ~30 m.y.
c. ~200 m.y.
d. ~90 m.y.
Explanation / Answer
Answer:11
3s-ii corresponds to the steep forelimb.
Answer:12
The older rocks are exposed in the center and younger rocks in the flanking flat irons.
Answer: 13
Atlantic Ocean
Answer:14
Southern hemisphere
Answer:15
Convergent movement of plates.
Answer:16
Gondwana supercontinent
Answer:17
Himalayas, by the collsion of India and Eurasia.
Answer:18
220-160 Ma
Answer:19
120-105 Ma
Answer:20
Around ~30 m.y. ago.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.