GEO 303 Chapter Notes - Chapter 26: Caprock, Mesozoic, Evaporite
24 Dec 2017
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North and west of this line, basement rocks are . To the east under the gulf coastal plain, the basement is buried beneath thick. Basaltic continental sedimentary rocks and it is not well known. crust . The sites that are today san antonio, austin, waco and dallas were near the . Precambrian basement rocks to the north and west of the dashed line (previous slide) are composed of . Llano uplift : igneous and metamorphic basement rocks are exposed at surface today by recent uplift and erosion. Oceanic south and east under the gulf coastal plain, the basement is buried beneath thick sedimentary rocks and it is not well known. crust . Enchanted rock : precambrian granite dome exposed at surface. Valley spring gneiss : precambrian metamorphic basement rock. The north american plate collided with another land mass forming the . Warm, shallow seas flooded the land resulting in deposition of a sheet of .
