Coalbed Methane Resources in the Powder River Basin: Lithologic Data

The USGS investigated coalbed methane (CBM) resources in the Powder River Basin (WY) and adjacent basins in Wyoming and North Dakota. Specifically, the analysis looked at: total gas desorbed, coal quality, and high-pressure methane adsorption isotherm data from 963 cored coal samples from 37 core holes. Specifically, the data includes: approximate depth (top and bottom), coal bed name, unit thickness (UT), canister total measured thickness (CaToMT), unit proportion of canister thickness (UPrCaT), core cumulative measured thickness (CoCuMT), average vitrain band thickness (AvVBT), average attrital band thickness (AvABT), cumulative fusain thickness (CuFT), lithotype code (see table 3), cumulative vitrain thickness (CuVT), cumulative attritus thickness (CuAT), percentages of vitrain (VP), attritus (AP), and fusain (FP), canister average percentages of vitrain (CaAvVP), attritus (CaAvAP), and fusain (CaAvFP), cleat spacing (CS), cleat frequency (CFr), canister average cleat frequency (CaAvCFr), total gas per canister, apparent rank, and comments.