Detection and analysis of basement structures in low-relief basins using integrated analysis of Landsat data
A series of examples supported by surface and subsurface controls illustrates a Landsat-based technique for detection of basement structures in low-relief basins. The term ''low-relief basin'' describes those basins whose structures and related hydrocarbon traps are subtle and difficult to recognize seismic data. These basins are also characterized by very gentle topography in which either the surface expression of structures is partly obscured by sediments, soil, and/or vegetation, or the structures are completely buried under nearly undeformed sedimentary units. Basement structures that are commonly observed in such basins include: basement wraps, such as domes, arches, and sags; and linear fault-related features, such as monoclines, basement steps, and individual faults and fracture zones. Analysis of these basins is done in several steps. First, Landsat imagery data are used in conjunction with available surface geologic maps to establish the trend, style, and timing of deformation of exposed structures in the region. Then, the imagery is used to identify structural elements that can be traced from the exposed margins into the basin interior, and to determine solitary surface features that may reflect the surface expression of buried structures. The possible association of the surface features identified on the imagery with basement-related structures is then postulated through the analysis of gravity and magnetic data. The final step in analysis is to examine available seismic and well data from the vicinity of key structural elements. A key determination is to establish the influence of basement structures and topography on the distribution of potential reservoir rocks in the basin.
- OSTI ID:
- 6633911
- Report Number(s):
- CONF-880301-
- Resource Relation:
- Conference: Annual meeting of the American Association of Petroleum Geologists, Houston, TX, USA, 20 Mar 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
BASEMENT ROCK
AERIAL SURVEYING
NATURAL GAS DEPOSITS
GEOPHYSICS
PETROLEUM DEPOSITS
EXPLORATION
GEOLOGIC TRAPS
GEOPHYSICAL SURVEYS
IMAGE PROCESSING
LANDSAT SATELLITES
REMOTE SENSING
RESERVOIR ROCK
SEDIMENTARY BASINS
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
MINERAL RESOURCES
PROCESSING
RESOURCES
SATELLITES
SURVEYS
020200* - Petroleum- Reserves
Geology
& Exploration
030200 - Natural Gas- Reserves
Geology
& Exploration