HR: 0800h
AN: G51B-0091    [Abstracts]
TI: Geological Features Extraction and Fusion Using Wavelet Transform of ASTER Images: Examples from the Neoproterozoic Allaqi-Heiani Suture, Southeastern Egypt
AU: * Ren, D
EM: rencui@utdallas.edu
AF: Geosciences, University of Texas at Dallas, 2601 N Floyd Road, Richardson, TX 75080 United States
AU: Abdelsalam, M G
EM: abdels@utdallas.edu
AF: Geosciences, University of Texas at Dallas, 2601 N Floyd Road, Richardson, TX 75080 United States
AB: Redundant wavelet transform (RWT) and discrete wavelet transform (DWT) are applied to the Advanced Spaceborne Thermal Emission and Reflectance Radiometer (ASTER) data to trace along strike continuation of geological structures in the E-W trending Neoproterozoic Allaqi-Heiani Suture in southern Egypt. Geological structures in the Allaqi-Heiani Suture are in the form of S-verging fold and thrust belt that constitute three nappes defined by distinctive lithological units specially ophiolite components including talc schist, serpentinite, and gabbro. Ophiolite components are distinctive from the surrounding rock types and they can be separated on the basis of their spectral characteristic in ASTER data using the RWT and DWT. The separated structural and lithological information is further fused together while the spectral information of their surrounding rock types is suppressed. Our results indicate that the lower nappes in the suture can be traced for the entire length of the suture whereas the upper nappes are folded about N-S trending axis.
DE: 9305 Africa
DE: 8000 STRUCTURAL GEOLOGY (New field, replaces single entry 8165)
DE: 8040 Remote sensing
DE: 1224 Photogrammetry
DE: 1640 Remote sensing
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting