Geologic units in Real county, Texas

Buda Limestone and Del Rio Clay, undivided (Phanerozoic | Mesozoic | Cretaceous-Late) at surface, covers 0.9 % of this area: Buda Limestone and Del Rio Clay, undivided
Lithology: limestone; mudstone; clay or mud; siltstone; shale
Devils River Limestone (Phanerozoic | Mesozoic | Cretaceous-Early [Comanchean]) at surface, covers 19 % of this area: Devils River Limestone
Lithology: limestone; dolostone (dolomite); chert
Quaternary deposit, undivided (Phanerozoic | Cenozoic | Quaternary) at surface, covers 5 % of this area: sand, silt, clay, and gravel. locally indurated with calcium carbonate (caliche); includes point bar, natural levee, stream channel, sand dune, terrace, alluvial fan, landslide bolson and playa deposits
Lithology: sand ; silt ; clay or mud; gravel; carbonate
Edwards Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 55 % of this area: Edwards Limestone
Lithology: limestone; dolostone (dolomite); chert
Glen Rose Limestone (Phanerozoic | Mesozoic | Cretaceous-Early) at surface, covers 20 % of this area: Glen Rose Limestone
Lithology: limestone; clay or mud; sandstone; conglomerate