Code Name "Name, Unit, and Code" 5001 Northern Alaska "Northern Alaska, Province 5001" 5002 Central Alaska "Central Alaska, Province 5002" 5003 Southern Alaska "Southern Alaska, Province 5003" 5004 Western Oregon-Washington "Western Oregon-Washington, Province 5004" 5005 Eastern Oregon-Washington "Eastern Oregon-Washington, Province 5005" 5006 Klamath-Sierra Nevada "Klamath-Sierra Nevada, Province 5006" 5007 Northern Coastal "Northern Coastal, Province 5007" 5008 Sonoma-Livermore Basin "Sonoma-Livermore Basin, Province 5008" 5009 Sacramento Basin "Sacramento Basin, Province 5009" 5010 San Joaquin Basin "San Joaquin Basin, Province 5010" 5011 Central Coastal "Central Coastal, Province 5011" 5012 Santa Maria Basin "Santa Maria Basin, Province 5012" 5013 Ventura Basin "Ventura Basin, Province 5013" 5014 Los Angeles Basin "Los Angeles Basin, Province 5014" 5015 San Diego-Oceanside "San Diego-Oceanside, Province 5015" 5016 Salton Trough "Salton Trough, Province 5016" 5017 Idaho-Snake River Downwarp "Idaho-Snake River Downwarp, Province 5017" 5018 Western Great Basin "Western Great Basin, Province 5018" 5019 Eastern Great Basin "Eastern Great Basin, Province 5019" 5020 Uinta-Piceance Basin "Uinta-Piceance Basin, Province 5020" 5021 Paradox Basin "Paradox Basin, Province 5021" 5022 San Juan Basin "San Juan Basin, Province 5022" 5023 Albuquerque-Santa Fe Rift "Albuquerque-Santa Fe Rift, Province 5023" 5024 Northern Arizona "Northern Arizona, Province 5024" 5025 Southern Arizona-Southwestern New Mexico "Southern Arizona-Southwestern New Mexico, Province 5025" 5026 South-Central New Mexico "South-Central New Mexico, Province 5026" 5027 Montana Thrust Belt "Montana Thrust Belt, Province 5027" 5028 North-Central Montana "North-Central Montana, Province 5028" 5029 Southwest Montana "Southwest Montana, Province 5029" 5030 "Hanna, Laramie, Shirley Basins" "Hanna, Laramie, Shirley Basins, Province 5030" 5031 Williston Basin "Williston Basin, Province 5031" 5032 Sioux Arch "Sioux Arch, Province 5032" 5033 Powder River Basin "Powder River Basin, Province 5033" 5034 Big Horn Basin "Big Horn Basin, Province 5034" 5035 Wind River Basin "Wind River Basin, Province 5035" 5036 Wyoming Thrust Belt "Wyoming Thrust Belt, Province 5036" 5037 Southwestern Wyoming "Southwestern Wyoming, Province 5037" 5038 Park Basins "Park Basins, Province 5038" 5039 Denver Basin "Denver Basin, Province 5039" 5040 Las Animas Arch "Las Animas Arch, Province 5040" 5041 Raton Basin-Sierra Grande Uplift "Raton Basin-Sierra Grande Uplift, Province 5041" 5042 Pedernal Uplift "Pedernal Uplift, Province 5042" 5043 Palo Duro Basin "Palo Duro Basin, Province 5043" 5044 Permian Basin "Permian Basin, Province 5044" 5045 Bend Arch-Fort Worth Basin "Bend Arch-Fort Worth Basin, Province 5045" 5046 Marathon Thrust Belt "Marathon Thrust Belt, Province 5046" 5047 Gulf Coast Cenozoic "Gulf Coast Cenozoic, Province 5047" 5049 Gulf Coast Mesozoic "Gulf Coast Mesozoic, Province 5049" 5050 Florida Peninsula "Florida Peninsula, Province 5050" 5051 Superior "Superior, Province 5051" 5052 Iowa Shelf "Iowa Shelf, Province 5052" 5053 Cambridge Arch-Central Kansas Uplift "Cambridge Arch-Central Kansas Uplift, Province 5053" 5054 Salina Basin "Salina Basin, Province 5054" 5055 Nemaha Uplift "Nemaha Uplift, Province 5055" 5056 Forest City Basin "Forest City Basin, Province 5056" 5057 Ozark Uplift "Ozark Uplift, Province 5057" 5058 Anadarko Basin "Anadarko Basin, Province 5058" 5059 Sedgwick Basin "Sedgwick Basin, Province 5059" 5060 Cherokee Platform "Cherokee Platform, Province 5060" 5061 Southern Oklahoma "Southern Oklahoma, Province 5061" 5062 Arkoma Basin "Arkoma Basin, Province 5062" 5063 Michigan Basin "Michigan Basin, Province 5063" 5064 Illinois Basin "Illinois Basin, Province 5064" 5065 Black Warrior Basin "Black Warrior Basin, Province 5065" 5066 Cincinnati Arch "Cincinnati Arch, Province 5066" 5067 Appalachian Basin "Appalachian Basin, Province 5067" 5068 Blue Ridge Thrust Belt "Blue Ridge Thrust Belt, Province 5068" 5069 Piedmont "Piedmont, Province 5069" 5070 Atlantic Coastal Plain "Atlantic Coastal Plain, Province 5070" 5071 Adirondack Uplift "Adirondack Uplift, Province 5071" 5072 New England "New England, Province 5072" 5300 Burgos Basin "Burgos Basin, Province 5300" 500101 Brookian Coalbed Gas Composite "Brookian Coalbed Gas Composite, Total Petroleum System 500101" 500104 Shublik "Shublik, Total Petroleum System 500104" 500105 Brookian "Brookian, Total Petroleum System 500105" 500106 Kingak "Kingak, Total Petroleum System 500106" 500201 Yukon Flats Tertiary Composite "Yukon Flats Tertiary Composite, Total Petroleum System 500201" 500301 Cook Inlet Composite Oil and Gas "Cook Inlet Composite Oil and Gas, Total Petroleum System 500301" 500302 Tertiary Coalbed Gas "Tertiary Coalbed Gas, Total Petroleum System 500302" 500403 Tertiary Coalbed Gas "Tertiary Coalbed Gas, Total Petroleum System 500403" 500501 Cretaceous-Tertiary Composite "Cretaceous-Tertiary Composite, Total Petroleum System 500501" 502001 Ferron Coal/Wasatch Plateau "Ferron Coal/Wasatch Plateau, Total Petroleum System 502001" 502002 Mesaverde "Mesaverde, Total Petroleum System 502002" 502003 Mancos/Mowry "Mancos/Mowry, Total Petroleum System 502003" 502005 Green River "Green River, Total Petroleum System 502005" 502101 Precambrian Chuar Group "Precambrian Chuar Group, Total Petroleum System 502101" 502102 Devonian "Devonian, Total Petroleum System 502102" 502103 Paradox Formation "Paradox Formation, Total Petroleum System 502103" 502104 Permo-Mississippian "Permo-Mississippian, Total Petroleum System 502104" 502105 Coalbed Gas "Coalbed Gas, Total Petroleum System 502105" 502201 Fruitland "Fruitland, Total Petroleum System 502201" 502202 Lewis Shale "Lewis Shale, Total Petroleum System 502202" 502203 Mancos-Menefee Composite "Mancos-Menefee Composite, Total Petroleum System 502203" 502703 Bakken "Bakken, Total Petroleum System 502703" 502705 Marias River Shale "Marias River Shale, Total Petroleum System 502705" 502706 Mesozoic Coal "Mesozoic Coal, Total Petroleum System 502706" 502801 Cretaceous Judith River Through Belle Fourche Biogenic Gas "Cretaceous Judith River Through Belle Fourche Biogenic Gas, Total Petroleum System 502801" 503002 Mowry-Hanna Composite "Mowry-Hanna Composite, Total Petroleum System 503002" 503003 Niobrara "Niobrara, Total Petroleum System 503003" 503004 Niobrara Biogenic Gas "Niobrara Biogenic Gas, Total Petroleum System 503004" 503005 Hanna-Mesaverde Coalbed Gas "Hanna-Mesaverde Coalbed Gas, Total Petroleum System 503005" 503101 Bakken "Bakken, Total Petroleum System 503101" 503102 Winnipeg-Deadwood "Winnipeg-Deadwood, Total Petroleum System 503102" 503108 Tyler "Tyler, Total Petroleum System 503108" 503110 Coalbed Gas "Coalbed Gas, Total Petroleum System 503110" 503301 Tertiary-Upper Cretaceous Coalbed Methane "Tertiary-Upper Cretaceous Coalbed Methane, Total Petroleum System 503301" 503302 Mowry "Mowry, Total Petroleum System 503302" 503303 Niobrara "Niobrara, Total Petroleum System 503303" 503304 Cretaceous Biogenic Gas "Cretaceous Biogenic Gas, Total Petroleum System 503304" 503402 Cretaceous-Tertiary Composite "Cretaceous-Tertiary Composite, Total Petroleum System 503402" 503502 Cretaceous-Lower Tertiary Composite "Cretaceous-Lower Tertiary Composite, Total Petroleum System 503502" 503503 Waltman "Waltman, Total Petroleum System 503503" 503602 Thrust Belt Coalbed Gas "Thrust Belt Coalbed Gas, Total Petroleum System 503602" 503702 Mowry Composite "Mowry Composite, Total Petroleum System 503702" 503703 Niobrara "Niobrara, Total Petroleum System 503703" 503704 Hilliard-Baxter-Mancos "Hilliard-Baxter-Mancos, Total Petroleum System 503704" 503705 Mesaverde "Mesaverde, Total Petroleum System 503705" 503706 Mesaverde-Lance-Fort Union Composite "Mesaverde-Lance-Fort Union Composite, Total Petroleum System 503706" 503707 Lewis "Lewis, Total Petroleum System 503707" 503708 Lance-Fort Union Composite "Lance-Fort Union Composite, Total Petroleum System 503708" 503709 Wasatch-Green River Composite "Wasatch-Green River Composite, Total Petroleum System 503709" 503901 Coalbed Methane "Coalbed Methane, Total Petroleum System 503901" 503902 Upper Cretaceous Fractured Niobrara "Upper Cretaceous Fractured Niobrara, Total Petroleum System 503902" 503903 Upper Cretaceous Pierre Shale "Upper Cretaceous Pierre Shale, Total Petroleum System 503903" 503906 Cretaceous Composite "Cretaceous Composite, Total Petroleum System 503906" 503907 Upper Cretaceous Niobrara Biogenic Gas "Upper Cretaceous Niobrara Biogenic Gas, Total Petroleum System 503907" 504101 Upper Cretaceous-Tertiary Coalbed Gas "Upper Cretaceous-Tertiary Coalbed Gas, Total Petroleum System 504101" 504401 Permian Basin Paleozoic Composite "Permian Basin Paleozoic Composite, Total Petroleum System 504401" 504501 Barnett-Paleozoic "Barnett-Paleozoic, Total Petroleum System 504501" 504502 Barnett-Hardeman Basin "Barnett-Hardeman Basin, Total Petroleum System 504502" 504504 Pennsylvanian-Lower Permian Coalbed Gas "Pennsylvanian-Lower Permian Coalbed Gas, Total Petroleum System 504504" 504702 Olmos Coalbed Gas "Olmos Coalbed Gas, Total Petroleum System 504702" 504703 Wilcox Coalbed Gas "Wilcox Coalbed Gas, Total Petroleum System 504703" 504704 Cretaceous-Tertiary Coalbed Gas "Cretaceous-Tertiary Coalbed Gas, Total Petroleum System 504704" 504901 Upper Jurassic-Cretaceous-Tertiary Composite "Upper Jurassic-Cretaceous-Tertiary Composite, Total Petroleum System 504901" 505801 Woodford Composite "Woodford Composite, Total Petroleum System 505801" 505802 Pennsylvanian Composite "Pennsylvanian Composite, Total Petroleum System 505802" 506201 Arkoma-Ouachita Paleozoic Composite "Arkoma-Ouachita Paleozoic Composite, Total Petroleum System 506201" 506202 Woodford-Chattanooga "Woodford-Chattanooga, Total Petroleum System 506202" 506203 Fayetteville-Caney "Fayetteville-Caney, Total Petroleum System 506203" 506204 Arkoma Coalbed Gas "Arkoma Coalbed Gas, Total Petroleum System 506204" 506303 Ordovician to Devonian Composite "Ordovician to Devonian Composite, Total Petroleum System 506303" 506305 Devonian Antrim "Devonian Antrim, Total Petroleum System 506305" 506306 Pennsylvanian Saginaw "Pennsylvanian Saginaw, Total Petroleum System 506306" 506402 Ordovician Ancell/Maquoketa "Ordovician Ancell/Maquoketa, Total Petroleum System 506402" 506403 Devonian-Mississippian New Albany "Devonian-Mississippian New Albany, Total Petroleum System 506403" 506404 Pennsylvanian Coal and Shale "Pennsylvanian Coal and Shale, Total Petroleum System 506404" 506405 Elvins Shale "Elvins Shale, Total Petroleum System 506405" 506502 Pottsville Coalbed Gas "Pottsville Coalbed Gas, Total Petroleum System 506502" 506703 Utica-Lower Paleozoic "Utica-Lower Paleozoic, Total Petroleum System 506703" 506704 Devonian Shale-Middle and Upper Paleozoic "Devonian Shale-Middle and Upper Paleozoic, Total Petroleum System 506704" 506705 Carboniferous Coalbed Gas "Carboniferous Coalbed Gas, Total Petroleum System 506705" 506706 Pottsville Coalbed Gas "Pottsville Coalbed Gas, Total Petroleum System 506706" 507001 Taylorsville Basin Composite "Taylorsville Basin Composite, Total Petroleum System 507001" 507002 Richmond Basin Composite "Richmond Basin Composite, Total Petroleum System 507002" 507003 Newark Basin Composite "Newark Basin Composite, Total Petroleum System 507003" 507004 Deep River Basin Composite "Deep River Basin Composite, Total Petroleum System 507004" 507005 South Georgia-North Florida Basin Composite "South Georgia-North Florida Basin Composite, Total Petroleum System 507005" 507006 Hartford Basin Composite "Hartford Basin Composite, Total Petroleum System 507006" 507007 Gettysburg Basin Composite "Gettysburg Basin Composite, Total Petroleum System 507007" 507008 Delmarva Basin Composite "Delmarva Basin Composite, Total Petroleum System 507008" 507009 Culpepper Basin Composite "Culpepper Basin Composite, Total Petroleum System 507009" 507010 Dan River-Danville Basin Composite "Dan River-Danville Basin Composite, Total Petroleum System 507010" 507011 Cumberland-Marlboro Basin Composite "Cumberland-Marlboro Basin Composite, Total Petroleum System 507011" 507012 Florence Basin Composite "Florence Basin Composite, Total Petroleum System 507012" 530002 Olmos Coalbed Gas "Olmos Coalbed Gas, Total Petroleum System 530002" 50010181 Nanushuk Formation Coalbed Gas "Nanushuk Formation Coalbed Gas, Assessment Unit 50010181" 50010182 Prince Creek-Tuluvak Formations Coalbed Gas "Prince Creek-Tuluvak Formations Coalbed Gas, Assessment Unit 50010182" 50010183 Sagavanirktok Formation Coalbed Gas "Sagavanirktok Formation Coalbed Gas, Assessment Unit 50010183" 50010461 Shublik Continuous Oil "Shublik Continuous Oil, Assessment Unit 50010461" 50010462 Shublik Shale Gas "Shublik Shale Gas, Assessment Unit 50010462" 50010561 Brookian Continuous Oil "Brookian Continuous Oil, Assessment Unit 50010561" 50010562 Brookian Shale Gas "Brookian Shale Gas, Assessment Unit 50010562" 50010661 Kingak Continuous Oil "Kingak Continuous Oil, Assessment Unit 50010661" 50010662 Kingak Shale Gas East "Kingak Shale Gas East, Assessment Unit 50010662" 50020181 Coalbed Gas "Coalbed Gas, Assessment Unit 50020181" 50030161 Tuxedni-Naknek Continuous Gas "Tuxedni-Naknek Continuous Gas, Assessment Unit 50030161" 50030281 Cook Inlet Coalbed Gas "Cook Inlet Coalbed Gas, Assessment Unit 50030281" 50040381 Eocene Coalbed Gas "Eocene Coalbed Gas, Assessment Unit 50040381" 50050161 Columbia Basin Continuous Gas "Columbia Basin Continuous Gas, Assessment Unit 50050161" 50200161 "Deep (6,000 feet plus) Coal and Sandstone Gas" "Deep (6,000 feet plus) Coal and Sandstone Gas, Assessment Unit 50200161" 50200181 Northern Coal Fairway/Drunkards Wash "Northern Coal Fairway/Drunkards Wash, Assessment Unit 50200181" 50200182 Central Coal Fairway/Buzzards Bench "Central Coal Fairway/Buzzards Bench, Assessment Unit 50200182" 50200183 Southern Coal Fairway "Southern Coal Fairway, Assessment Unit 50200183" 50200184 Joes Valley and Messina Grabens "Joes Valley and Messina Grabens, Assessment Unit 50200184" 50200185 Southern Coal Outcrop "Southern Coal Outcrop, Assessment Unit 50200185" 50200261 Uinta Basin Continuous Gas "Uinta Basin Continuous Gas, Assessment Unit 50200261" 50200262 Uinta Basin Transitional Gas "Uinta Basin Transitional Gas, Assessment Unit 50200262" 50200263 Piceance Basin Continuous Gas "Piceance Basin Continuous Gas, Assessment Unit 50200263" 50200264 Piceance Basin Transitional Gas "Piceance Basin Transitional Gas, Assessment Unit 50200264" 50200281 Uinta Basin Blackhawk Coalbed Gas "Uinta Basin Blackhawk Coalbed Gas, Assessment Unit 50200281" 50200282 Mesaverde Group Coalbed Gas "Mesaverde Group Coalbed Gas, Assessment Unit 50200282" 50200361 Piceance Basin Continuous Gas "Piceance Basin Continuous Gas, Assessment Unit 50200361" 50200362 Uinta Basin Continuous Gas "Uinta Basin Continuous Gas, Assessment Unit 50200362" 50200363 Uinta-Piceance Transitional and Migrated Gas "Uinta-Piceance Transitional and Migrated Gas, Assessment Unit 50200363" 50200561 Deep Uinta Overpressured Continuous Oil "Deep Uinta Overpressured Continuous Oil, Assessment Unit 50200561" 50210161 Precambrian Chuar Self-Sourced Reservoirs "Precambrian Chuar Self-Sourced Reservoirs, Assessment Unit 50210161" 50210261 Devonian Self-Sourced Reservoirs "Devonian Self-Sourced Reservoirs, Assessment Unit 50210261" 50210361 Cane Creek Shale Oil "Cane Creek Shale Oil, Assessment Unit 50210361" 50210362 Cane Creek Shale Gas "Cane Creek Shale Gas, Assessment Unit 50210362" 50210363 "Gothic, Chimney Rock, Hovenweep Shale Oil" "Gothic, Chimney Rock, Hovenweep Shale Oil, Assessment Unit 50210363" 50210364 "Gothic, Chimney Rock, Hovenweep Shale Gas" "Gothic, Chimney Rock, Hovenweep Shale Gas, Assessment Unit 50210364" 50210461 Manning Canyon "Manning Canyon, Assessment Unit 50210461" 50210581 Kaiparowits Plateau "Kaiparowits Plateau, Assessment Unit 50210581" 50210582 Henry Mountains "Henry Mountains, Assessment Unit 50210582" 50220161 Pictured Cliffs Continuous Gas "Pictured Cliffs Continuous Gas, Assessment Unit 50220161" 50220181 Fruitland Fairway Coalbed Gas "Fruitland Fairway Coalbed Gas, Assessment Unit 50220181" 50220182 Basin Fruitland Coalbed Gas "Basin Fruitland Coalbed Gas, Assessment Unit 50220182" 50220261 Lewis Continuous Gas "Lewis Continuous Gas, Assessment Unit 50220261" 50220361 Mesaverde Central-Basin Continuous Gas "Mesaverde Central-Basin Continuous Gas, Assessment Unit 50220361" 50220362 Mancos Sandstones Continuous Gas "Mancos Sandstones Continuous Gas, Assessment Unit 50220362" 50220363 Dakota-Greenhorn Continuous Gas "Dakota-Greenhorn Continuous Gas, Assessment Unit 50220363" 50220381 Menefee Coalbed Gas "Menefee Coalbed Gas, Assessment Unit 50220381" 50270361 Bakken Continuous Oil "Bakken Continuous Oil, Assessment Unit 50270361" 50270561 Marias River Shale Continuous Oil "Marias River Shale Continuous Oil, Assessment Unit 50270561" 50270681 Jurassic-Cretaceous Coalbed Methane "Jurassic-Cretaceous Coalbed Methane, Assessment Unit 50270681" 50280161 Judith River Formation "Judith River Formation, Assessment Unit 50280161" 50280162 Eagle Sandstone and Claggett Shale East "Eagle Sandstone and Claggett Shale East, Assessment Unit 50280162" 50280163 Eagle Sandstone and Claggett Shale West "Eagle Sandstone and Claggett Shale West, Assessment Unit 50280163" 50280164 Niobrara-Carlile "Niobrara-Carlile, Assessment Unit 50280164" 50280165 Greenhorn-Lower Belle Fourche "Greenhorn-Lower Belle Fourche, Assessment Unit 50280165" 50280166 Greenhorn-Upper Belle Fourche "Greenhorn-Upper Belle Fourche, Assessment Unit 50280166" 50280167 Bowdoin Dome "Bowdoin Dome, Assessment Unit 50280167" 50300261 Hanna Basin Continuous Gas "Hanna Basin Continuous Gas, Assessment Unit 50300261" 50300361 Niobrara Continuous Oil "Niobrara Continuous Oil, Assessment Unit 50300361" 50300461 Niobrara Biogenic Gas "Niobrara Biogenic Gas, Assessment Unit 50300461" 50300581 Medicine Bow-Ferris-Hanna Coalbed Gas "Medicine Bow-Ferris-Hanna Coalbed Gas, Assessment Unit 50300581" 50300582 Mesaverde Coalbed Gas "Mesaverde Coalbed Gas, Assessment Unit 50300582" 50310161 Elm Coulee-Billings Nose Continuous Oil "Elm Coulee-Billings Nose Continuous Oil, Assessment Unit 50310161" 50310162 Central Basin Continuous Oil "Central Basin Continuous Oil, Assessment Unit 50310162" 50310163 Nesson-Little Knife Continuous Oil "Nesson-Little Knife Continuous Oil, Assessment Unit 50310163" 50310164 Eastern Transitional Continuous Oil "Eastern Transitional Continuous Oil, Assessment Unit 50310164" 50310165 Northwest Transitional Continuous Oil "Northwest Transitional Continuous Oil, Assessment Unit 50310165" 50310166 Three Forks Continuous Oil "Three Forks Continuous Oil, Assessment Unit 50310166" 50310261 Winnipeg-Icebox Continuous Gas "Winnipeg-Icebox Continuous Gas, Assessment Unit 50310261" 50310861 Tyler Shale Continuous Oil "Tyler Shale Continuous Oil, Assessment Unit 50310861" 50311081 Fort Union Coalbed Gas "Fort Union Coalbed Gas, Assessment Unit 50311081" 50330181 Wasatch Formation "Wasatch Formation, Assessment Unit 50330181" 50330182 Upper Fort Union Formation "Upper Fort Union Formation, Assessment Unit 50330182" 50330183 Lower Fort Union-Lance Formations "Lower Fort Union-Lance Formations, Assessment Unit 50330183" 50330261 Mowry Continuous Oil "Mowry Continuous Oil, Assessment Unit 50330261" 50330361 Niobrara Continuous Oil "Niobrara Continuous Oil, Assessment Unit 50330361" 50330461 Shallow Continuous Biogenic Gas "Shallow Continuous Biogenic Gas, Assessment Unit 50330461" 50340261 Muddy-Frontier Sandstone and Mowry Fractured Shale Continuous Gas "Muddy-Frontier Sandstone and Mowry Fractured Shale Continuous Gas, Assessment Unit 50340261" 50340262 Mowry Fractured Shale Continuous Oil "Mowry Fractured Shale Continuous Oil, Assessment Unit 50340262" 50340263 Cody Sandstone Continuous Gas "Cody Sandstone Continuous Gas, Assessment Unit 50340263" 50340264 Mesaverde Sandstone Continuous Gas "Mesaverde Sandstone Continuous Gas, Assessment Unit 50340264" 50340281 Mesaverde-Meeteetse Formation Coalbed Gas "Mesaverde-Meeteetse Formation Coalbed Gas, Assessment Unit 50340281" 50340282 Fort Union Formation Coalbed Gas "Fort Union Formation Coalbed Gas, Assessment Unit 50340282" 50350261 Frontier-Muddy Continuous Gas "Frontier-Muddy Continuous Gas, Assessment Unit 50350261" 50350262 Cody Sandstones Continuous Gas "Cody Sandstones Continuous Gas, Assessment Unit 50350262" 50350263 Cody Fractured Shale Continuous Oil "Cody Fractured Shale Continuous Oil, Assessment Unit 50350263" 50350264 Mesaverde-Meeteetse Sandstones Continuous Gas "Mesaverde-Meeteetse Sandstones Continuous Gas, Assessment Unit 50350264" 50350265 Lance-Fort Union Sandstones Continuous Gas "Lance-Fort Union Sandstones Continuous Gas, Assessment Unit 50350265" 50350281 Mesaverde Coalbed Gas "Mesaverde Coalbed Gas, Assessment Unit 50350281" 50350282 Meeteetse Coalbed Gas "Meeteetse Coalbed Gas, Assessment Unit 50350282" 50350283 Fort Union Coalbed Gas "Fort Union Coalbed Gas, Assessment Unit 50350283" 50350361 Waltman Fractured Shale Continuous Oil "Waltman Fractured Shale Continuous Oil, Assessment Unit 50350361" 50360281 Frontier-Adaville-Evanston Coalbed Gas "Frontier-Adaville-Evanston Coalbed Gas, Assessment Unit 50360281" 50370261 Mowry Continuous Gas "Mowry Continuous Gas, Assessment Unit 50370261" 50370361 Niobrara Continuous Oil "Niobrara Continuous Oil, Assessment Unit 50370361" 50370362 Niobrara Continuous Gas "Niobrara Continuous Gas, Assessment Unit 50370362" 50370461 Hilliard-Baxter-Mancos Continuous Gas "Hilliard-Baxter-Mancos Continuous Gas, Assessment Unit 50370461" 50370561 Almond Continuous Gas "Almond Continuous Gas, Assessment Unit 50370561" 50370562 Rock Springs-Ericson Continuous Gas "Rock Springs-Ericson Continuous Gas, Assessment Unit 50370562" 50370581 Mesaverde Coalbed Gas "Mesaverde Coalbed Gas, Assessment Unit 50370581" 50370661 Mesaverde-Lance-Fort Union Continuous Gas "Mesaverde-Lance-Fort Union Continuous Gas, Assessment Unit 50370661" 50370681 Mesaverde Coalbed Gas "Mesaverde Coalbed Gas, Assessment Unit 50370681" 50370682 Fort Union Coalbed Gas "Fort Union Coalbed Gas, Assessment Unit 50370682" 50370761 Lewis Continuous Gas "Lewis Continuous Gas, Assessment Unit 50370761" 50370861 Lance-Fort Union Continuous Gas "Lance-Fort Union Continuous Gas, Assessment Unit 50370861" 50370881 Lance Coalbed Gas "Lance Coalbed Gas, Assessment Unit 50370881" 50370882 Fort Union Coalbed Gas "Fort Union Coalbed Gas, Assessment Unit 50370882" 50370961 Wasatch-Green River Continuous Gas "Wasatch-Green River Continuous Gas, Assessment Unit 50370961" 50370981 Wasatch-Green River Coalbed Gas "Wasatch-Green River Coalbed Gas, Assessment Unit 50370981" 50390181 Denver Formation Coals "Denver Formation Coals, Assessment Unit 50390181" 50390182 Laramie Formation Coals "Laramie Formation Coals, Assessment Unit 50390182" 50390261 Fractured Niobrara Limestone (Silo Field Area) "Fractured Niobrara Limestone (Silo Field Area), Assessment Unit 50390261" 50390361 Fractured Pierre Shale "Fractured Pierre Shale, Assessment Unit 50390361" 50390661 Niobrara-Codell (Wattenberg Area) "Niobrara-Codell (Wattenberg Area), Assessment Unit 50390661" 50390662 Dakota Group Basin-Center Gas "Dakota Group Basin-Center Gas, Assessment Unit 50390662" 50390761 Niobrara Chalk "Niobrara Chalk, Assessment Unit 50390761" 50410181 Raton Coalbed Gas "Raton Coalbed Gas, Assessment Unit 50410181" 50410182 Vermejo Coalbed Gas "Vermejo Coalbed Gas, Assessment Unit 50410182" 50440161 Delaware/Pecos Basins Woodford Continuous Shale Gas "Delaware/Pecos Basins Woodford Continuous Shale Gas, Assessment Unit 50440161" 50440162 Delaware/Pecos Basins Barnett Continuous Shale Gas "Delaware/Pecos Basins Barnett Continuous Shale Gas, Assessment Unit 50440162" 50440163 Midland Basin Woodford/Barnett Continuous Gas "Midland Basin Woodford/Barnett Continuous Gas, Assessment Unit 50440163" 50440164 Delaware Basin Wolfcamp Shale "Delaware Basin Wolfcamp Shale, Assessment Unit 50440164" 50440165 Spraberry Continuous Oil "Spraberry Continuous Oil, Assessment Unit 50440165" 50450161 Greater Newark East Frac-Barrier Continuous Barnett Shale Gas "Greater Newark East Frac-Barrier Continuous Barnett Shale Gas, Assessment Unit 50450161" 50450162 Extended Continuous Barnett Shale Gas "Extended Continuous Barnett Shale Gas, Assessment Unit 50450162" 50450163 Hypothetical Basin-Arch Barnett Shale Oil "Hypothetical Basin-Arch Barnett Shale Oil, Assessment Unit 50450163" 50450261 Hypothetical Continuous Fractured Barnett Shale Oil "Hypothetical Continuous Fractured Barnett Shale Oil, Assessment Unit 50450261" 50450481 Hypothetical Pennsylvanian-Lower Permian Coalbed Gas "Hypothetical Pennsylvanian-Lower Permian Coalbed Gas, Assessment Unit 50450481" 50470281 Cretaceous Olmos Coalbed Gas "Cretaceous Olmos Coalbed Gas, Assessment Unit 50470281" 50470381 Wilcox Coalbed Gas "Wilcox Coalbed Gas, Assessment Unit 50470381" 50470481 Cretaceous-Tertiary Coalbed Gas "Cretaceous-Tertiary Coalbed Gas, Assessment Unit 50470481" 50490161 Haynesville Sabine Platform Shale Gas "Haynesville Sabine Platform Shale Gas, Assessment Unit 50490161" 50490162 Haynesville Greater Gulf Basin Shale Gas "Haynesville Greater Gulf Basin Shale Gas, Assessment Unit 50490162" 50490163 Mid-Bossier Sabine Platform Shale Gas "Mid-Bossier Sabine Platform Shale Gas, Assessment Unit 50490163" 50490164 Bossier Greater Gulf Basin Shale Gas "Bossier Greater Gulf Basin Shale Gas, Assessment Unit 50490164" 50490165 Maverick Basin Pearsall Shale Gas "Maverick Basin Pearsall Shale Gas, Assessment Unit 50490165" 50490166 Greater Gulf Basin Lower Cretaceous Shale Gas "Greater Gulf Basin Lower Cretaceous Shale Gas, Assessment Unit 50490166" 50490167 Eagle Ford Shale Gas "Eagle Ford Shale Gas, Assessment Unit 50490167" 50490168 Austin Pearsall-Giddings Area Oil "Austin Pearsall-Giddings Area Oil, Assessment Unit 50490168" 50490169 Smackover Downdip Continuous Gas "Smackover Downdip Continuous Gas, Assessment Unit 50490169" 50490170 Eagle Ford Shale Oil "Eagle Ford Shale Oil, Assessment Unit 50490170" 50580161 Woodford Shale Gas "Woodford Shale Gas, Assessment Unit 50580161" 50580162 Woodford Shale Oil "Woodford Shale Oil, Assessment Unit 50580162" 50580261 Thirteen Finger Limestone-Atoka Shale Gas "Thirteen Finger Limestone-Atoka Shale Gas, Assessment Unit 50580261" 50620161 Arkoma-Ouachita Foredeep Continuous "Arkoma-Ouachita Foredeep Continuous, Assessment Unit 50620161" 50620261 Woodford Shale Gas "Woodford Shale Gas, Assessment Unit 50620261" 50620262 Chattanooga Shale Gas "Chattanooga Shale Gas, Assessment Unit 50620262" 50620361 Fayetteville Shale Gas - Mississippi Embayment "Fayetteville Shale Gas - Mississippi Embayment, Assessment Unit 50620361" 50620362 Fayetteville Shale Gas - High Gamma-Ray Depocenter "Fayetteville Shale Gas - High Gamma-Ray Depocenter, Assessment Unit 50620362" 50620363 Fayetteville Shale Gas - Western Arkansas Basin Margin "Fayetteville Shale Gas - Western Arkansas Basin Margin, Assessment Unit 50620363" 50620364 Caney Shale Gas "Caney Shale Gas, Assessment Unit 50620364" 50620481 Arkoma Coalbed Gas "Arkoma Coalbed Gas, Assessment Unit 50620481" 50630361 Devonian Antrim Continuous Oil "Devonian Antrim Continuous Oil, Assessment Unit 50630361" 50630362 Ordovician Collingwood Shale Gas "Ordovician Collingwood Shale Gas, Assessment Unit 50630362" 50630561 Devonian Antrim Continuous Gas "Devonian Antrim Continuous Gas, Assessment Unit 50630561" 50630681 Pennsylvanian Saginaw Coalbed Gas "Pennsylvanian Saginaw Coalbed Gas, Assessment Unit 50630681" 50640261 Ordovician Maquoketa Continuous "Ordovician Maquoketa Continuous, Assessment Unit 50640261" 50640361 Devonian to Mississippian New Albany Continuous Gas "Devonian to Mississippian New Albany Continuous Gas, Assessment Unit 50640361" 50640481 Desmoinesian-Virgilian Coalbed Gas "Desmoinesian-Virgilian Coalbed Gas, Assessment Unit 50640481" 50640561 Elvins Shale Gas "Elvins Shale Gas, Assessment Unit 50640561" 50650281 Warrior Basin "Warrior Basin, Assessment Unit 50650281" 50670361 Clinton-Medina Basin Center "Clinton-Medina Basin Center, Assessment Unit 50670361" 50670362 Clinton-Medina Transitional Northeast "Clinton-Medina Transitional Northeast, Assessment Unit 50670362" 50670363 Clinton-Medina Transitional "Clinton-Medina Transitional, Assessment Unit 50670363" 50670364 Tuscarora Basin Center "Tuscarora Basin Center, Assessment Unit 50670364" 50670365 Utica Shale Gas "Utica Shale Gas, Assessment Unit 50670365" 50670366 Utica Shale Oil "Utica Shale Oil, Assessment Unit 50670366" 50670461 Greater Big Sandy "Greater Big Sandy, Assessment Unit 50670461" 50670462 Northwestern Ohio Shale "Northwestern Ohio Shale, Assessment Unit 50670462" 50670463 Devonian Siltstone and Shale "Devonian Siltstone and Shale, Assessment Unit 50670463" 50670465 Catskill Sandstones and Siltstones "Catskill Sandstones and Siltstones, Assessment Unit 50670465" 50670466 Berea Sandstone "Berea Sandstone, Assessment Unit 50670466" 50670467 Foldbelt Marcellus "Foldbelt Marcellus, Assessment Unit 50670467" 50670468 Interior Marcellus "Interior Marcellus, Assessment Unit 50670468" 50670469 Western Margin Marcellus "Western Margin Marcellus, Assessment Unit 50670469" 50670581 Pocahontas Basin "Pocahontas Basin, Assessment Unit 50670581" 50670582 Eastern Dunkard Basin "Eastern Dunkard Basin, Assessment Unit 50670582" 50670583 Western Dunkard Basin "Western Dunkard Basin, Assessment Unit 50670583" 50670584 Central Appalachian Shelf "Central Appalachian Shelf, Assessment Unit 50670584" 50670585 Appalachian Anthracite and Semi-Anthracite "Appalachian Anthracite and Semi-Anthracite, Assessment Unit 50670585" 50670681 Cahaba Basin "Cahaba Basin, Assessment Unit 50670681" 50700161 Taylorsville Basin Continuous Gas "Taylorsville Basin Continuous Gas, Assessment Unit 50700161" 50700261 Richmond Basin Continuous Gas "Richmond Basin Continuous Gas, Assessment Unit 50700261" 50700361 South Newark Basin Continuous Gas "South Newark Basin Continuous Gas, Assessment Unit 50700361" 50700362 North Newark Basin Continuous Gas "North Newark Basin Continuous Gas, Assessment Unit 50700362" 50700461 Deep River Basin Continuous Gas "Deep River Basin Continuous Gas, Assessment Unit 50700461" 50700561 South Georgia Basin Continuous Gas "South Georgia Basin Continuous Gas, Assessment Unit 50700561" 50700562 North Florida Basin Continuous Gas "North Florida Basin Continuous Gas, Assessment Unit 50700562" 50700661 Hartford Basin Continuous Gas "Hartford Basin Continuous Gas, Assessment Unit 50700661" 50700761 Gettysburg Basin Continuous Gas "Gettysburg Basin Continuous Gas, Assessment Unit 50700761" 50700861 Delmarva Basin Continuous Gas "Delmarva Basin Continuous Gas, Assessment Unit 50700861" 50700961 Culpepper Basin Continuous Gas "Culpepper Basin Continuous Gas, Assessment Unit 50700961" 50701061 Dan River-Danville Basin Continuous Gas "Dan River-Danville Basin Continuous Gas, Assessment Unit 50701061" 50701161 Cumberland-Marlboro Basin Continuous Gas "Cumberland-Marlboro Basin Continuous Gas, Assessment Unit 50701161" 50701261 Florence Basin Continuous Gas "Florence Basin Continuous Gas, Assessment Unit 50701261" 53000281 Rio Escondido Basin Olmos Coalbed Gas "Rio Escondido Basin Olmos Coalbed Gas, Assessment Unit 53000281"