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The AAPG/Datapages Combined Publications Database
West Texas Geological Society
Abstract
Origin and Recognition of Fractures, Breccias, and Sediment Fills in Paleocave-Reservoir Networks
Abstract
The origin and recognition of fractures, breccias, and sediment fills in paleocave-reservoir networks can be defined through the study of modern and ancient cave systems. Cave processes can be divided into near-surface and deep-
burial
processes. Near-surface processes include solutional excavation of the cave, clastic and chemical sedimentation within the cave, and collapse of the walls and ceiling of the cave. Deep-burial processes come into effect as the host-strata are buried and subside into the subsurface. Cave collapse and further fracturing and brecciation of previously collapsed blocks are the most important of these deep-burial processes. An ancient cave system, which has undergone burial
, may have had a complex history with several episodes of brecciation. Where an overprint of tectonic fracturing occurs, there will be additional complexity.
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