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Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

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BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

Drilling at seven sites spaced every 5 kilometers along a straight-line transect heading from west to east has provided the following data on depth to the water table and on the rock type present just below the water table: (a) 15 meters, sandstone; (b) 14.5 meters, sandstone; (c) 14 meters, sandstone; (d) 5 meters, limestone; (e) 13 meters, sandstone; (f) 12.5 meters, sandstone; (g) 12 meters, sandstone. What is the regional slope of the water table? Provide a reasonable explanation for the data obtained from site d.

To determine

The regional slope of a water table and a reasonable explanation for the data obtained from site d.

Explanation

The given data suggest that 7 drilling sites are present at an interval of 5 kilometers. Hence, the total area of study would be 30 kilometers. The elevation of water table from the first site to seventh site is 15 m, 14.5 m, 14 m, 5 m, 12.5 m, and 12 m, respectively. Hence, the elevation of the water table is increasing from the first site to the seventh site excepting the fourth drilling site, which has an exceptionally high elevation of 5 m. Also, all the other sites show sandstone except the fourth site, which is a limestone...

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