Pisoids and Pisolite Facies (Permian), Guadalupe Mountains, New Mexico and West Texas


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Coated Grains


The abundant pisolite of the back-reef facies of the Capitan Limestone of the Guadalupe Mountain, New Mexico and Texas has long been of geologic interest. Its interpretation is important for better understanding the famous Permian Reef Complex and for interpreting pisolite, pisoids and associated facies elsewhere in the world. But major changes in prevailing concepts of the Guadalupe Mountains pisolite have occurred in the past 20 years. Consensus has not yet been reached. The purpose of this article is to summarize our current data and interpretations, emphasizing field-observable features.

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