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The AAPG/Datapages Combined Publications Database
West Texas Geological Society
Abstract
Biohermal Submarine Cements Laborcita Formation (Permian), Northern Sacramento Mountains, New Mexico
Abstract
Radial-fibrous masses of crystalline calcium carbonate in phylloid algal bioherms of the Wolfcampian Laborcita Formation are interpreted as original aragonitic submarine cement. This syndepositional marine cement grew as hemispherical masses and fan arrays in shelter cavities beneath phylloid algal blades, and between skeletal grains. Aragonite inversion and subsequent recrystallization of the fibrous marine cement has resulted in crudely radial-fibrous masses of neospar quite unlike its original precursor.
Isopachous crusts of fibrous scalenohedral calcite partially fill the interior and coat the exterior surfaces of various shells. These crusts are possibly submarine in origin.
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