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Author Question: By the end of the Permian, the Absaroka Sea had retreated from the craton, exposing what type of ... (Read 43 times)

Evvie72

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on: Jul 13, 2018
By the end of the Permian, the Absaroka Sea had retreated from the craton, exposing what type of deposits?
 A)evaporite
 B)black shale
 C)volcanic
 D)red bed
 E)reef

Question 2

What is a cone of depression, where is it found, and what causes it? Why can large cones of depression be a serious problem?


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Ahernandez18

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Reply #1 on: Jul 13, 2018
Answer to Question 1

D

Answer to Question 2

A cone of depression is where the water table is lower in a cone shape in the area around a well. It is caused by excess groundwater pumping; that is when discharge from a water well exceeds recharge or the rate of groundwater flow. Large cones of depression are a problem because they can cause shallow wells in the immediate vicinity to go dry.


Evvie72

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Reply 2 on: Jul 13, 2018
Thanks for the timely response, appreciate it

apple

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Reply 3 on: Yesterday
Gracias!

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