quartermaster formation

quartermaster formation - Interpretation of the Late...

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Interpretation of the Late Permian Quartermaster Formation The Quartermaster Formation is a late Permian sedimentary formation which outcrops beautifully in Caprock Canyons State Park, Texas. The Quartermaster overlies the Cloud Chief Gypusm and the contact roughly outcrops at 2390 ft. The Quartermaster Formation occurs as three thickening, or coarsening upwards cycles. The lower most Quartermaster is a silty sandstone with two dolomite beds, climbing cross laminations, thin laminations, convolute bedding, and satin spar gypsum. The satin spar gypsum occurs along bedding planes and faults which is representative of secondary satin spar gypsum. Convolute bedding occurred from the slumping of a shelf prodelta. Satin spar gypsum is secondary and most likely formed during the salt dissolution at the sub surface. The salt dissolution caused a brine to percolate up through the faults and bedding planes, precipitating satin spar gypsum. This section of the Quartermaster also contains climbing cross laminations. Due to the presence of dolomite and the above stated
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This note was uploaded on 07/17/2011 for the course GEOL 4201 taught by Professor Staff during the Fall '10 term at Texas Tech.

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quartermaster formation - Interpretation of the Late...

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