Can anyone help me with Part C questions? (C1 & C2 & C3) THANK YOU! C1: How can
ID: 118454 • Letter: C
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Can anyone help me with Part C questions? (C1 & C2 & C3) THANK YOU!
C1: How can you tell in the area this ...
C2: Recall that on a topographic ...
C3: Reflect & Discuss...
Study the orthophoto map of part of the Park City (Kentucky) 7.5-minute quadrangle in Fig. 10.7. The center of this map area is located at 37.073° N, 86.090 W. This entire area is underlain by limestone, although the limestone is overlain by sandstone in the small northern part of this image (Bald Knob, Opossum Hollow) that is covered by dense dark green trees. 1. How can you tell in the area on this orthoimage where limestone crops out at Earth's surface? 2. Recall that on a topographic map, a depression is shown by a contour line with hachures (tic marks) that form a closed loop. Describe the pattern of depressions on the topo map of Park City (Fig. A10.1.1). Why do some of the depressions contain ponds, but others do not? 3. REFLECT & DISCUSS Notice that there are many naturally formed circular ponds in the northwest half of the image. (The triangular ponds are surface water impounded behind dams constructed by people.) How could you use the elevations of the surfaces of the ponds to determine how groundwater flows through this region?Explanation / Answer
a) In the orho photo the area where limestones outcrop can be seen to have fresh , cream coloured patched material between the greenery. except those in the northern part, there the outcropping surface is more yellowish and mostly covered in thick bushes. The areas of veryy less vegetation or sparse vegetattion where the buff colour is visible are underlain by limestones.
b) The deprssions in the toposhet are usually found in high elevation. most of teh depressions are uneven in shape though not so curvy. some of the depressions have circular ponds in them some have ponds of differnett shape and some do not have ponds in them. only those deppresions that meet the water table would have ponds. if not the ponds have to be artificial . here in this karst topography since most of the features are naturally occuring thee ponds may be sink holes depressions etc. they indicate the ground water flow directions.
C) elevation of surface water of the ponds are infcat the potentiometric surfaces. They can help us understand teh flow levels and directions even when theh surface level of water is below the surface as in many covered caverns and uderground dissolution tunnels.potentiometricc surfaces can be used to understand all ground water flow directions and basin boundaries.
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