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that may trap oil, gas or water, preventing it from migrating to the surface. This caprock can prevent hydrocarbons from migrating to the surface, allowing them to accumulate in a
98:, the caprock controls the rate of erosion of the scarp. As the softer rock is cut away, periodically the caprock shears off. Caprock is also found in
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above the falls, and is what prevents the river from eroding the face of the falls very quickly. The
Niagara caprock is made of
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type overlying a less resistant rock type, analogous to an upper crust on a cake that is harder than the underlying layer.
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171:. The classic Murray 1966 paper describes the generalized sequence as sediments-calcite-gypsum-anhydrite-salt.
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56:. The dark thin layer in the foreground, where water is not yet running, is the caprock.
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dissolve in a characteristic manner, and can range between 0–1500 ft thick. The
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167:. The anhydrite and gypsum react with organic material to form
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218:, 2nd ed., Penguin Reference, London, New York, etc., p. 41..
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of oil, gas and water. These structures, also known as
277:"Salt structures of Gulf of Mexico basin--a review"
139:, are a primary target for the petroleum industry.
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293:10.1306/5d25b49d-16c1-11d7-8645000102c1865d
256:10.1306/c1ea3aa0-16c9-11d7-8645000102c1865d
238:"Origins of Gulf Coast Salt-Dome Cap Rock"
159:(salt) is removed first, leaving behind
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181:Caprock Canyons State Park and Trailway
72:. At Niagara Falls, the caprock is the
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83:. Other common types of caprock are
16:Rock overlying a less resistant type
68:flows, is an example of a scarp or
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236:Walker, Charles W. (Dec 1976).
275:Murray, Grover E. (Mar 1966).
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19:For the region in Texas, see
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214:Kearey, Philip (2001).
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216:Dictionary of Geology
94:In processes such as
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33:is a more resistant
186:Caprock Escarpment
116:petroleum industry
102:and on the top of
62:Niagara Escarpment
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54:Niagara Escarpment
250:(12): 2162–2166.
224:978-0-14-051494-0
143:Salt dome caprock
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191:Hoodoo (geology)
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50:Horseshoe Falls
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287:(3): 439–478.
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153:Gulf of Mexico
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66:Niagara Falls
64:, over which
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319:Stratigraphy
296:. Retrieved
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259:. Retrieved
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147:The tops of
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124:nonpermeable
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106:formations.
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41:Description
298:2010-09-07
261:2010-09-07
202:References
149:salt domes
100:salt domes
89:mafic rock
70:escarpment
196:Monadnock
165:anhydrite
132:reservoir
127:formation
110:Petroleum
85:sandstone
81:limestone
78:dolomitic
313:Category
175:See also
74:riverbed
31:cap rock
169:calcite
122:is any
120:caprock
114:In the
27:Caprock
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161:gypsum
157:halite
220:ISBN
163:and
104:mesa
87:and
60:The
35:rock
289:doi
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29:or
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