Bulletin: Bureau of Economic Geology publications, Issue 44 |
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Common terms and phrases
Anthracolitic artesian Austin chalk Balcones Escarpment Basin belt Brazos brown calcareous Cambrian Canyon Central Mineral Region central Texas chert Chisos Cisco clays coal Comanchean composed conglomerate Cook Mountain County Creek bed deposits division Eagle Ford east Texas eastern Edwards limestone Edwards Plateau Eocene erosion farther feet thick formed fossils Franklin Mountains Geological granite gravels Guadalupe Gulf Coastal Plain gypsum High Plains Horn Hueco igneous rocks interbedded intrusive known Lafayette laminated lava layers lignite lime limestone Llano Estacado lower Marathon region marine Mexico miles Miocene Navarro north-central occurs Ordovician outcrop overlies Paleozoic Panhandle Pecos Pennsylvanian Permian Pleistocene Pliocene porous portion Pre-Cambrian Presidio Red River salt sands sandstone sandy seams sedimentary sediments Shafter shales Silurian southern strata Strawn surface Taylor marls Tertiary thin thin-bedded Trans-Pecos Trans-Pecos region Trans-Pecos Texas Triassic Trinity Udden unconformity Upper Cretaceous Uvalde valley western Wilcox Yegua yellow