Structural geology of carboniferous rocks near Marble Falls, Burnet County, Texas

Carboniferous rocks assigned to the Houy, Chappel, Barnett, Marble Falls, and Smithwick formations crop out near Marble Falls, Texas. Numerous northeast-trending normal faults that cut the Paleozoic and Precambrian rocks are covered by Cretaceous deposits. Faulting in the area began about the time that the Smithwick formation was being deposited and was initiated by the Llano uplift to the west. Folded and steeply-dipping sandstone beds in the Smithwick formation are located adjacent to faults, usually on the downthrown side. The folds are overturned to the east and have originated from sliding of sand and clay off rising fault scarps. Soft sediment deformation of the Smithwick formation was proved by study of microfaults and conglomerates containing fractured pebbles with sandstone dikes. Folded sandstone beds within the area originated during the time that normal faulting occurred. One period of tensional deformation, directly related to the Llano uplift, is responsible for the major structural features in the area

Name thesis:degree_name

Master of Arts

Level thesis:degree_level

Masters

Discipline thesis:degree_discipline

Geological Sciences

Grantor

University of Texas at Austin

Year dc:date.issued

1961

Author dc:creator

• Warner, Ralph Hartwin, 1932-

Advisor dc:contributor.advisor

• Muehlberger, William R.

Statement dc:rights

• Copyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.

Language dc:language.iso

eng

Identifier URI

http://dx.doi.org/10.26153/tsw/10447

OAI identifier oai:identifier

oai:repositories.lib.utexas.edu:2152/83450