Thermal Maturity Patterns in Ordovician and...

URL: http://pubs.usgs.gov/of/2002/of02-302/

The objective of this study is to enhance existing thermal maturity maps in Pennsylvania by establishing: 1) new subsurface CAI data points for the Ordovician and Devonian and 2) new %Ro and Rock Eval subsurface data points for Middle and Upper Devonian black shale units. Thermal maturity values for the Ordovician and Devonian strata are of major interest because they contain the source rocks for most of the oil and natural gas resources in the basin. Thermal maturity patterns of the Middle Ordovician Trenton Group are evaluated here because they closely approximate those of the overlying Ordovician Utica Shale that is believed to be the source rock for the regional oil and gas accumulation in Lower Silurian sandstones (Ryder and others, 1998) and for natural gas fields in fractured dolomite reservoirs of the Ordovician Black River-Trenton Limestones. Improved CAI-based thermal maturity maps of the Ordovician are important to identify areas of optimum gas generation from the Utica Shale and to provide constraints for interpreting the origin of oil and gas in the Lower Silurian regional accumulation and Ordovician Black River-Trenton fields. Thermal maturity maps of the Devonian will better constrain burial history-petroleum generation models of the Utica Shale, as well as place limitations on the origin of regional oil and gas accumulations in Upper Devonian sandstone and Middle to Upper Devonian black shale.

Additional Information

Field Value
Data last updated unknown
Metadata last updated unknown
Created unknown
Format HTML
License License not specified
Createdover 8 years ago
can be previewedTrue
folder idroot
formatHTML
has viewsTrue
id336f6a52-353b-4898-b23c-e09ab73ef7fc
license typenotspecified
package idfff24507-e017-4491-98bd-f7fd09b7ef06
recycle removedFalse
resource group ide3217234-47a1-4069-98dc-ff36535ac05c
resource typefile
revision id6cfdbf20-5229-4e21-b3ce-09e6f2fca86c
stateactive
webstore last updatedNone
webstore urlNone