U.S. Geological Survey Open-File Report 2006-1019
By Elisabeth L. Rowan
Three regional-scale, cross sectional (2-D) burial and thermal history models are presented
for the central Appalachian basin based on the detailed geologic cross sections of Ryder and
others (2004), Crangle and others (2005), and Ryder, R.T., written communication. The
models integrate the available thermal and geologic information to constrain the burial,
uplift, and erosion history of the region. The models are restricted to the relatively
undeformed part of the basin and extend from the Rome trough in West Virginia and
Pennsylvania northwestward to the Findlay arch in Ohio. This study expands the
scope of previous work by Rowan and others (2004) which presented a preliminary
burial/thermal history model for a cross section (E-E') through West Virginia and Ohio. In
the current study, the burial/thermal history model for E-E' is revised, and integrated with
results of two additional cross sectional models (D-D' and C-C').
The burial/thermal history models provide calculated thermal maturity (Ro%) values for the entire stratigraphic sequence, including hydrocarbon source rocks, along each of the three cross sections. In contrast, the Ro and conodont CAI data available in the literature are sparse and limited to specific stratigraphic intervals. The burial/thermal history models also provide the regional temperature and pressure framework that is needed to model hydrocarbon migration.
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For questions or comments concerning the scientific content of this report, contact Elisabeth L. Rowan.