Landsat-Based Lineament Analysis, East Texas Basin, and Structural History of the Sabine Uplift Area, East Texas and North Louisiana

摘要

The relationship between subsurface structure and lineaments was examined. More than 2,200 lineaments were mapped from 1:250,000-scale Landsat images. Vector sums of greater-than-average values of length-weighted frequency define significant peaks of lineament orientation. For all lineaments, significant peaks occur at 325 degrees and 21 degrees. The northwest peak parallels mean azimuth of borehole elongations in Cotton Valley sandstone wells throughout East Texas. Lineament density delineates major fault zones. These results suggest that lineaments and subsurface structures result from like-oriented stresses. Identification of the timing, extent, and orientation of arching episodes in the Sabine Uplift area is important in developing a structural history of the area.