About This Item
- Full TextFull Text(subscription required)
- Pay-Per-View PurchasePay-Per-View
Purchase Options Explain
Share This Item
Possible thrust-sheet geometries in the unexposed Cambrian-Ordovician lithotectonic unit in the Nittany anticlinorium of the Valley and Ridge province in West Virginia are defined through analysis of geophysical data.
Calculated gravity for different subsurface interpretations is compared with observed gravity. Comparisons of model calculations to terrain-corrected Bouguer gravity indicate that a large blind thrust of the Cambrian-Ordovician lithotectonic unit, extending across the entire width of the anticlinorium, is an acceptable subsurface interpretation. A seismic line across the anticlinorium is also presented. The seismic line reveals that a large part of the area is underlain by a double thickness of the Cambrian-Ordovician lithotectonic unit.
Data can be interpreted many ways. However, the gravity data require that an acceptable model have only minor lateral density contrasts across the anticlinorium so that effectively, a double thickness of the Cambrian-Ordovician lithotectonic unit exists across it. Both the gravity and seismic data indicate that the presence of separate horses beneath the major Silurian-Devonian structures exposed at the surface is unlikely.
Pay-Per-View Purchase Options
The article is available through a document delivery service. Explain these Purchase Options.
|Protected Document: $10|
|Internal PDF Document: $14|
|Open PDF Document: $24|
Members of AAPG receive access to the full AAPG Bulletin Archives as part of their membership. For more information, contact the AAPG Membership Department at [email protected].