Piceance Basin, Upper Arkansas, Denver- NW San Juan, Sand Wash Eagle North\Middle South Park Front Range Raton Southeast Geologic Ma Epoch San Juan San Luis Julesburg

Era Paradox Basins Basin Basin Park Basins Basin Outcrops Basin Colorado History Volcanics Valleys Basin Period 0 Dotsero Volcano 1, 4-5 my basalt Raton basalt ows Mesa de Maya basalt ows Gravel Mtn Independence Mtn Tilt conglomerate Pleistocene/ Alamosa Ogallala Ogallala Rifting Pliocene Breeze Mtn (Yampa Stocks) Dry Gravels at Divide 8 Grand Mesa Volcanics Grouse Mtn Basalt Union Regional uplift Flat Tops Volcanics Santa Fe

Miocene Goodenough Treasure Mtn Los Pinos Trump Wagon Tongue Martins Canyon Browns Park Browns Park Troublesome North Park Cedar Mtn 20 Neogene San Juan Volcanics Arikaree Spanish Peaks Creede San Juan Volcanics Healing Phase 2 Conejos Mt Cumulus Oligocene Mt Richthofen Bishop Cgl Pitch- Rabbit Ears Volcanics Central Colo- Tallahassee Brule West Elk Volcanics Pinnacle rado Volcanics Creek Cgl White River Group Gilbert Peak erosion surface Antero Castle Rock Cgl Chadron Devils Hole Castle Rock Rhyolite Two Buttes Mt Sopris White River Echo Park Telluride Cgl Wall Mountain Tu 39 Mile Volcanics Florissant (Wall Mtn Tu) Montezuma Larkspur Cgl 40 Chapter 7 Breckenridge Eocene Washakie/Bridger Laccolith Uinta Farisita Laramide Orogeny

CENOZOIC Blanco Basin Huerfano-Cuchara Green River Coalmont Wasatch Poison Canyon San Jose Wasatch D2 Sequence Dawson Arkose Orogenic Paleogene gravels Molina Animas Middle Park Paleosol Raton Nacimiento/Animas Ft Union Ft Union South Park 60 Paleocene Green Mtn Cgl sub-Arapahoe Ohio Ck Cgl Moat Cgl Windy Gap D1 Sequence unconformity Raton Cgl Ch 6 Ojo Alamo Laramide Reinecker Ridge Cgl Laramie Arapahoe Cgl Denver sub-Ojo Alamo unconformity sub-Ohio Ck unconformity sub-Moat unconformity sub-Windy Gap unconformity Vermejo Williams Fork Lance/Williams Fork Laramie Pando Porphyry Laramie Kirtland Lion Cyn Fox Hills Laramie Richard Fox Hills Richard Fruitland Lion Cyn Fox Hills Fox Hills Trinidad Rollins Iles Fox Hills Larimer Larimer Cozzette Twentymile Lewis Rocky Ridge Rocky Ridge Pictured Clis Corcoran Hygiene Pierre Pierre Pierre Castlegate Kremmling Laramide Lewis Cli House Sego Trout Ck Terry Terry Pierre Pierre Meeker Tow Ck Laramide Lujane Pt Mancos Apache Creek Shale Hygiene Shale Hygiene 80 Menefee Sharon Springs Sharon Springs MV Sharon Spr Laramide Pierre Point Lookout Morapas Mancos Prairie Cyn Smoky Hill Smoky Hill Niobrara Smoky Hill Upper Mancos Smoky Hill Niobrara Niobrara Niobrara Niobrara Niobrara Niobrara Niobrara Ft Hays Ft Hays Juana Lopez Montezuma Juana Lopez Ft Hays Juana Lopez Ft Hays Juana Lopez Mancos Shale Juana Lopez Cretaceous Blue Hill Benton Codell Codell Codell Codell Frontier Benton Carlile CarlileCarlile Carlile Carlile Bridge Ck Cretaceous Benton Greenhorn GreenhornGreenhorn Greenhorn Greenhorn Interior Seaway Graneros Mowry Mowry Mowry shales Graneros GranerosGraneros Graneros Graneros Dakota Grp Mowry Dakota Grp Dakota Grp Mowry Mowry Colorado Grp Mowry Colorado Grp Dakota Grp Dakota Grp 100 Dakota Grp Dakota Grp Horsetooth/J Dakota Grp Dakota Grp Dakota Grp Transgressive lags Lytle pebbles Van Bibber Dakota Dakota J Dakota J Dakota J Kassler/Ft. Collins Skull Ck Skull Ck Skull Ck Grp Skull Creek Grp Plainview Grp Plainview Grp Plainview Plainview Lytle Lytle Lytle Sevier Orogeny Burro Canyon Burro Canyon Lytle (Cedar Mountain in UT) Cretaceous

120 Chapter 5 Lower sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity sub-Dakota unconformity Basal conglomerates (e.g., Buckhorn)

sub-Dakota unconformity sub-Dakota unconformity 140

Brushy Basin Salt Wash Brushy Basin Salt Wash Brushy Basin Tidwell Blu Morrison Morrison Morrison Tidwell Morrison Salt Wash Morrison Morrison Morrison Morrison Morrison Morrison Westwater Recapture Ck Junction Ck Junction Ck Upper J5 unconformity J5 unconformity J5 unconformity Ralston Creek Ralston Creek Ralston Creek J5 unconformity J5 unconformity J5 unconformity J5 unconformity J5 unconformity J5 unconformity J5 unconformity Wanakah Wanakah 160 Curtis Curtis Pony Express (Todilto in UT) Pony Express

Entrada Entrada Entrada Entrada Entrada/Sundance Garo Sundance Entrada Entrada Middle Page Carmel San Rafael Grp Carmel San Rafael Grp Carmel

San Rafael Grp MESOZOIC J2 unconformity J2 unconformity J2 unconformity J2 unconformity J2 unconformity J2 unconformity J2 unconformity J2 unconformity J2 unconformity Healing Phase 1 Navajo 180 Navajo Jurassic Navajo/Nugget Lower Kayenta Kayenta Glen Cyn Glen Cyn

Glen Grp Cyn

Glen Grp Cyn

Wingate Wingate Glen Grp Canyon 200 J0 unconformity J0 unconformity J0 unconformity J0 unconformity

Chapter 4

220 Upper Chinle Chinle Chinle Chinle Chinle Chinle

Triassic Shinarump Gartra Gartra Gartra N Atlantic Opens, America driftsW

240 Tr3 unconformity Tr3 unconformity Tr3 unconformity Tr3 unconformity Middle Jelm Jelm Jelm Moenkopi Moenkopi Moenkopi Chugwater Lower Lykins Lykins Taloga Tr1 unconformity Tr1 unconformity Tr1 unconformity Ochoan State State Bridge Forelle Forelle Forelle 260 Bridge Day Creek Glendo White Rim Ss Lykins Falcon Guadalupian Minnekahta Whitehorse Grp Ancestral Rockies Kaibab Ls Orogeny Phosphoria Park City/S Canyon Creek S Canyon Ck Opeche Blaine Blaine Blaine Leonardian Organ Rock Cedar Hills Cedar Hills Lyons Stone Corral Glorieta Stone Corral 280 Sumner Schoolhouse Satanka/Owl Cyn Wellington Yeso Chase Permian Sangre Weber Ingleside Wolfcamp Council Grove Wolfcampian Weber de Weber Wabaunsee Cristo Wabaunsee Maroon Shawnee Crestone Shawnee Hermosa Maroon Maroon Cgl Fountain Lansing Lansing ASSEMBLES PANGEA 300 Elephant Canyon Jacque Mtn Jacque Mtn Kansas City Kansas City Virgilian Maroon Eagle Valley Evaporite Gothic Marmaton Madera Minturn Fountain Marmaton Ouachita-Marathon-Sonoma and Alleghenian Orogenies Minturn Morgan Minturn Minturn Sharpsdale Missourian Round Valley Eagle Valley Cherokee Cherokee Desmoinesian Paradox salts Eagle Valley Evap Evaporite Atokan Belden Atoka Atoka Belden Belden Kerber Lower Hermosa Belden Glen Eyrie Morrow Morrow Chapter 3

Morrowan Uncompahgre Uncompahgre Keyes Keyes Ancestral Rockies Ancestral Ancestral Rockies Ancestral Rockies Ancestral Rockies Ancestral 320 Pennsylvanian

Molas Chesterian Molas Molas Molas Molas pre-Pennsylvanian pre-Pennsylvanian pre-Pennsylvanian Meramecian pre-Pennsylvanian unconformity unconformity unconformity pre-Pennsylvanian pre-Pennsylvanian pre-Pennsylvanian pre-Pennsylvanian Carboniferous unconformity 340 unconformity unconformity unconformity unconformity Beulah Ste. Genevieve Osagean regression St. Louis St. Louis

Mississippian Leadville Leadville Leadville Leadville Leadville Spergen Hardscrabble/ Spergen Kinder- Leadville Warsaw Leadville Warsaw hookian Gilman Gilman Kaskaskia Sequence Williams Cyn Osage Osage 360 PinyonPre Devonian Pk unconformityOuray Dyer Kinderhook Williams Chaee Grp Dyer Dyer Kinderhook

Grp

Grp Grp Misener Canyon

Chaee Chaee

Chaee Chaee Chaee Chaee Parting Parting Parting Elbert McCracken transgression Upper Ignacio

380 Aneth

Middle Gore Fault Gore

pre-Devonian pre-Devonian pre-Devonian pre-Devonian pre-Devonian pre-Devonian pre-Devonian pre-Devonian pre-Devonian Devonian 400 unconformity unconformity unconformity unconformity unconformity unconformity unconformity unconformity unconformity Lower PALEOZOIC

420 Pridoli Ludlow Wentlock

Llandovery Silurian and Ordovician Gore Fault Gore 440 Silurian fossils in kimberlite pipes

Chapter 2 west of Virginia Dale regression

Upper Fault Dallas Creek/Ridgway Fremont Fremont Fremont Viola Fremont Ls Tippecanoe Sequence 460 Harding Harding Harding Harding Harding Ss Simpson Middle transgression

sub-Harding unconformity sub-Harding unconformity sub-Harding unconformity sub-Harding unconformity sub-Harding unconformity regression Ordovician

Manitou Laurentia Margin Passive Lower Manitou Manitou Manitou Manitou Manitou/Arbuckle Manitou/ ?Cambro-Ordovician 480 Arbuckle Arbuckle strata removed by Sauk Sequence pre-Devonian Dotsero Dotsero Dotsero sub-Manitou unconformity? unconformity Furongian Sawatch Sawatch/ Sawatch/Reagan Lodore Lodore Sawatch Sawatch Sawatch Sawatch/Reagan Reagan Tintic 500 transgression Series 3

Series 2 520 Cambrian

Terren- The Great The Great The Great The Great The Great The Great The Great The Great The Great Unconformity Unconformity Unconformity Unconformity Unconformity Unconformity Unconformity Unconformity Unconformity euvian

540 Uinta Mt Grp 780-720 Ma Tava 800-680 Ma Proterozoic Uncompahgre Basement Rocks, mainly 1.1–1.8 Ga 1.7-1.4 Ga Owiyukuts Complex Ch 1 Oct. 30, 2018 2.4 Ga