Stratigraphic Section Along Line A-B [PDF, 74.4 kb, viewer]

Stratigraphic Section Along Line C-D [PDF, 56.5 kb, viewer]

Two cross-sections show the bedrock stratigraphy and relative displacement of fault blocks from west to east (Stratigraphic Section Along Line A-B [PDF, 74.4 kb, viewer]) and from north to south (Stratigraphic Section Along Line C-D [PDF, 56.5 kb, viewer]) of the southern portion of the study area. The surface and bedrock topography of the sections were obtained directly from the digital surface and bedrock topography maps, whereas the stratigraphy was reconstructed from the bedrock map, drillholes, and fault block displacement map; the vertical exaggeration is approximately 28X. A detailed description of bedrock stratigraphy is obtained by clicking on each drillhole number (ex. BH 40) on the cross-sections. Bedding in the Paleozoic rocks is normally close to horizontal, but within many fault zones the beds dip steeply toward the downthrown block (Williams, 1991), but these dipping beds could not be shown on the cross-sections as they are too localized and small for the scale of the graphic.