Alaska coal geology, resources, and coalbed methane potential

Miscellaneous · Tue Nov 15 04:00:00 EST 2005

OSTI ID:20813231

Flores, Romeo M; Stricker, Gary D; Kinney, Scott A

Estimated Alaska coal resources are largely in Cretaceous and Tertiary rocks distributed in three major provinces, Northern Alaska-Slope, Central Alaska-Nenana, and Southern Alaska-Cook Inlet. Cretaceous resources, predominantly bituminous coal and lignite, are in the Northern Alaska-Slope coal province. Most of the Tertiary resources, mainly lignite to subbituminous coal with minor amounts of bituminous and semianthracite coals, are in the other two provinces. The combined measured, indicated, inferred, and hypothetical coal resources in the three areas are estimated to be 5,526 billion short tons (5,012 billion metric tons), which constitutes about 87 percent of Alaska's coal and surpasses the total coal resources of the conterminous United States by 40 percent. Coal mining has been intermittent in the Central Alaskan-Nenana and Southern Alaska-Cook Inlet coal provinces, with only a small fraction of the identified coal resource having been produced from some dozen underground and strip mines. Alaskan coals have a lower sulfur content (averaging 0.3 percent) than most coals in the conterminous United States and are within or below the minimum sulfur value mandated by the 1990 Clean Air Act amendments. Another untapped potential resource is coalbed methane estimated to total 1,000 trillion cubic feet (28 trillion cubic meters).

• Research Organization: United States Geological Survey (United States). United States Department of the Interior
• OSTI ID: 20813231
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
ALASKA
BITUMINOUS COAL
CHEMICAL COMPOSITION
COAL
COAL DEPOSITS
COAL MINING
GEOLOGY
LIGNITE
METHANE
RESOURCE ASSESSMENT
RESOURCE POTENTIAL
SULFUR CONTENT
TERTIARY PERIOD
US GS
USA