Permanent Link:

https://digital.lib.usf.edu/SFS0069892/00001

Material Information

Title:

STGS April 2019 Bulletin

Series Title:

STGS Bulletin

Creator:

Ames III, Gene

Publication Date:

2019-04-01

Language:

English

Subjects

Subjects / Keywords:

Bulletin ( local )
News ( local )
Business ( local )
Edu ( local )
Fashion ( local )
Recent ( local )
Life ( local )
Music ( local )
Technology ( local )
Travel ( local )
Web Design ( local )

Genre:

serial ( sobekcm )

Notes

Abstract:

Just 17 miles south of Fort Stockton, US Highway 385 crosses this astrobleme. One of Texas’ best secrets is that Sierra Madera, immediately to the northeast of the highway, is the central peak of an eight-mile diameter astrobleme. An astrobleme is the scar left on the earth’s surface by the impact of a very large meteor. This astrobleme was thoroughly studied by the United States Geological Survey (Professional Paper 599H, 1972), because it is like astroblemes on the moon and Mars. They are characterized by: an outer rim, a large circular depression and a sharp peak in the middle. The USGS found that rocks in this peak originally were more than 4000 feet below the surface and were rebound from the impact pressure of the large meteorite. The information gained here, that collecting rocks from central peaks provided samples of rocks from far below the surface, led NASA to program some landings on the moon and the robot Curiosity on Mars to land in the depression near central peaks. The rocks that make up this peak are highly folded and faulted, and have high pressure features, crystals and minerals found nowhere else in the southwest.

Record Information

Source Institution:

University of South Florida Library

Holding Location:

University of South Florida

Rights Management:

This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.

USFLDC Membership

Aggregations:

University of South Florida
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Postcard Information

Format:

serial