The rationale for assessment of undiscovered, economically recoverable oil and gas in central and northern Arizona: Play analyses of seven favorable areas

Abstract

page 16. Total Paleozoic isopach map of northern Arizona ..... 17. Paleotectonic map of southern Cordillera, latest Precambrian to mid-Carboniferous (Mississippian-Pennsylvanian boundary) time, 625-325 myBP .......... 18. Paleotectonic map of southern Cordillera, mid-Carboniferous (Mississippian-Pennsylvanian boundary) to mid-Triassic (end of Middle Triassic) time, 325-225 myBP .

Isotopic Analyses of Helium From Wells Located in the Four Corners Area, southwestern, Us

“…In the Dineh-Bi-Keyah Field, the Devonian McCracken Sandstones in range from poorlysorted to well-sorted glauconitic sandstones with small amounts of sandy dolomites (Butler, 1988). The McCracken has a thickness of ~100 feet (30 m) with the lower 25 feet (8 m Masters, 1968).…”

The geologic setting of southern Arizona and southwestern New Mexico, with a rationale for assessment of undiscovered economically recoverable oil and gas; a summary of four potential plays

“…The central region borders the northern edge of assessment province #93 ( fig. 1), and has been briefly described in the U.S. Geological Survey petroleum assessment report for northern and central Arizona (Butler, 1988a).…”

“…The thermal maturity of Paleozoic outcrops in the area ranges from about 0.6 to 1.8 percent R , generally increasing southeastwardly (Butler, 1988a). Oil, associated gas, condensate, and dry gas are the types of hydrocarbons expected to be generated and preserved in Upper Paleozoic strata.…”