Basement structures in the northern Tularosa Basin, central New Mexico
- Univ. of Texas, El Paso, TX (United States). Dept. of Geological Sciences
A variety of geophysical data consisting of gravity and magnetic measurements, drill holes, and other geologic information have provided an analysis of basement structures within the northern Tularosa Basin of central New Mexico. Both the Laramide and Ancestral Rockies orogenies and the extension associated with the Rio Grande rift affected the structural development of this area. This area is significant in that it is the region in which the eastern boundary of the Rio Grande rift shifts 115 km eastward to the bounding fault between the Tularosa basin and the Sacramento uplift. The Tularosa basin is a large, complex structure consisting of two grabens and a horst block. At this latitude, it is probably the major Rio Grande rift structure. In fact, gravity modeling has determined that the thinnest crust (above 32 km) in the region lies beneath the north Tularosa basin. Analysis of gravity and magnetic anomaly maps identify gravity lows associated with Paleozoic or Precambrian basins. Gravity lows northeast of the Oscura uplift form a semi-continuous regional depression eastward to the late Paleozoic Pedernal uplift, a topographic feature believed to be a remnant of the Ancestral Rocky Mountains.
- OSTI ID:
- 6001744
- Report Number(s):
- CONF-9303212--
- Journal Information:
- Geological Society of America, Abstracts with Programs; (United States), Journal Name: Geological Society of America, Abstracts with Programs; (United States) Vol. 25:1; ISSN GAAPBC; ISSN 0016-7592
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
580000* -- Geosciences
BASEMENT ROCK
DATA ANALYSIS
DEVELOPED COUNTRIES
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC HISTORY
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GEOLOGY
GEOPHYSICAL SURVEYS
GRAVITY SURVEYS
MAGNETIC SURVEYS
NEW MEXICO
NORTH AMERICA
OROGENESIS
RIFT ZONES
SEDIMENTARY BASINS
SURVEYS
USA