EBK THE EARTH THROUGH TIME
11th Edition
ISBN: 9781119117063
Author: Unknown
Publisher: YUZU
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Question
Chapter 3, Problem 1QRD
To determine
The difference between a geochronologic division in the geological time scale and a chronostratigraphic division.
Expert Solution & Answer
Answer to Problem 1QRD
Geochronologic units denote the intervals of geologic time and chronostratigraphic units comprises of all the rocks deposited during a given time interval.
Explanation of Solution
Geochronology is the science of determining the age of rocks and geochronologic unit is a time unit. On the other hand, chronostratigraphic units denote the rocks that were formed or were deposited during a specific interval of time. They are also referred to as time-rock units.
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44) In periglacial environments, the layer of ground that thaws every summer and freezes every winter is called
A) frost layer
B) permafrost
C) active layer
D) discontinuous permafrost
Use the attached piezometer map to make your own, clean version of the map, and indicate the elevation of the water table at all piezometer locations.
Draw equipotential lines (lines of equal water table elevation) using regular intervals – creating a contoured map of the water table.
Determine the direction of groundwater flow based on the horizontal gradient. Label the areas of recharge and discharge directly on your map.
Flow lines: Draw flow lines on your water table map. The lines should be at right angles to the equipotential lines and extend from the recharge area to the discharge area.
Hydraulic Gradient, Specific Discharge (Darcy Flux), Average Linear Velocity:
Using your water table map, estimate an average hydraulic gradient between two locations, call them locations A and B, one at the eastern-most and a second at the western-most extent of your dataset (note the north arrow on the map).
Calculate the specific discharge, q, between the two locations. For this calculation…
Calculate all the values of table 1:
Q in (L/day)
Q out (L/day)
Residence time (days)
Please show all steps
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