Fault and joint measurements in Austin Chalk, Superconducting Super Collider Site, Texas

Conference · Sat Dec 31 00:00:00 EST 1994

OSTI ID:45208

Nance, H S; Laubach, S E; Dutton, A R ^[1]

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1. Univ. of Texas, Austin, TX (United States)

Structure maps of 9.4 mi of nearly continuous tunnel excavations and more than 10 mi of other exposures and excavations in Austin Chalk at the Superconducting Super Collider (SSC) site in Ellis County, Texas, record normal-fault and joint populations in the subsurface within the northern segment of the Balcones Fault Zone with unmatched resolution for such a long traverse. Small faults (<10 ft throw) occur in clusters or swarms that have as many as 24 faults. Fault swarms are as much as 2,000 ft wide, and spacing between swarms ranges from 800 to 2,000 ft, averaging about 1,000 ft. Predominantly northeast-trending joints are in swarms spaced 500 to more than 21,000 ft apart.

• OSTI ID: 45208
• Report Number(s): CONF-941065-; CNN: Contract IAC(92-93)-0301; TRN: 95:001437-0031
• Resource Relation: Conference: 44. annual convention of the Gulf Coast Association of Geological Societies and the 41st annual convention of the Gulf Coast Section of the Society of Economic Paleontologists and Mineralogists, Austin, TX (United States), 5-7 Oct 1994; Other Information: PBD: 1994; Related Information: Is Part Of Gulf Coast Association of Geological Societies: Transactions. Volume 44; Major, R.P. [ed.]; PB: 847 p.
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
43 PARTICLE ACCELERATORS
SUPERCONDUCTING SUPER COLLIDER
SITE CHARACTERIZATION
EXCAVATION
TEXAS
GEOLOGIC FAULTS
GEOLOGIC FISSURES
ORIENTATION
TUNNELS
LIMESTONE