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Person

Tina Roberts-Ashby

Science Center Director

Geology, Energy & Minerals Science Center

Email: troberts-ashby@usgs.gov
Office Phone: 703-648-6543
Fax: 703-648-6419

Location
John W Powell FB
12201 Sunrise Valley Drive
Reston , VA 20192-0002
US

Supervisor: Michael H Tupper
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The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and incorporates a set of known or postulated oil and (or) gas accumulations sharing similar geologic, geographic, and temporal properties within the Total Petroleum System, such as source rock, timing, migration pathways, trapping mechanism, and hydrocarbon type. The Assessment Unit boundary is defined geologically as the limits of the geologic...
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