HR: 14:30h
AN: T23A-03    [Abstracts]
TI: Structural And Litological Inversion Using Gravity And Mangetic Data Integrated With Geological Infomation
AU: * Odegard, M E
EM: meo@grizgeo.com
AF: Grizzly Geosciences, Inc., 14019 Southwest Freeway Suite 301-735, Sugar Land, TX 77478, United States
AU: Dickson, W G
EM: billd@hal-pc.org
AF: Dickson International Geosciences (DIGs), 10260 Westheimer Rd Suite 320, Houston, TX 77042, United States
AU: Granath, J
EM: jgranath@qwest.net
AF: Granath & Associates, 2306 Glenhaven Dr., Highlands Ranch, CO 80126, United States
AB: Basin geometry and structure can be derived from the inversion of gravity and magnetic data. Using some newly developed techniques these inversions can also discriminate between different lithologies. Magnetic data can be inverted for magnetic basement and for intermediate layers of volcanic material. Gravity data can be inverted for structures which produce density contrasts in basins. Combining these results, basin structure can be explored to determine depth to basement, to high density structures such as carbonates, and to high susceptibility structures such as volcanics. New high resolution data sets for gravity and magnetic data have been merged and now cover all of Southeast Asia. These data allow us to extend our interpretation to all offshore basins and some onshore as well. We use the structural interpretations described above along with enhancements of gravity, magnetic and digital elevation model data. Combining these interpretations and enhancements with published data in a GIS environment allows us to constrain additional interpretations of tectonic development, and sedimentary facies and structures in basins. Examples are shown for basins around the South China Sea. In addition and example from the Tampico area of Mexico will be presented.
DE: 3005 Marine magnetics and paleomagnetics (1550)
DE: 8015 Local crustal structure
DE: 8122 Dynamics: gravity and tectonics
DE: 9320 Asia
DE: 9350 North America
SC: Tectonophysics [T]
MN: 2007 Joint Assembly