Geologic structure analysis using radar imagery of the coal mining area of Buchanan County, Virginia.
Elder-CH; Jeran-PW; Keck-DA
NTIS: PB 228 689, 1974; :1-29
An analysis of the geologic structure of an area of Buchanan County, Virginia, was made by the Bureau of Mines using imagery from an airborne an/apq-97 side-looking radar system to evaluate that mapping technique for delineating structural features that may cause mining problems. Side-looking airborne radar (slar) was found to be a useful remote sensing tool for geologic structural analysis. Fault and joint systems identified by lineaments and linear patterns in the imagery were verified by surface and in-mine observations. Little paw paw fault was extended 10 miles by slar lineament analysis. A 22-mile fault, here named the Bishop-Bradshaw Creek Fault, was mapped by lineament analysis and verified by observation of the fault on the Bishop Coal Company mine map and on offset patterns of commercial gas production and surface observation of lineament along the fault. Three major superimposed joint sets and several fault or fractured zones were identified by slar lineament analysis, showing more complex structure than earlier mapping indicated. Slar imagery accurately delineated structural features that are known to affect gas migration and accumulation and that weaken the rock forming the immediate roof to mine workings, causing mining problems and potentially hazardous environment in the mines.
Mining-industry; Structural-analysis; Geology
IH; Report of Investigations
NTIS Accession No.
NTIS: PB 228 689