Geospatial data files included in this data set:
geol83: geologic units, contacts, and faults
The ARC/INFO coverage is: geol83
The "info" file geol83.pat contains the following attributes unique to this cover that are described below. They are:
PTYPE Detailed map unit symbol. PTYPE-GEN Generalized values used for Teriary and older map units. SEL Not currently used. SYMB Not currently used.The "info" file geol83.patgen contains the attribute "PTYPE-GEN" for the region "GEN" in this cover that is the same as the "PTYPE-GEN" described below.
The file that contains the polygon attributes and a brief description is: geol83.lup. The file is called geol83pl.dbf as a dbase file for ArcView. This file contains the additional attributes:
GROUP Highest ranking group for mapped units. SUB-GROUP1 Second ranking group. SUB-GROUP2 Third ranking groupThe map symbols below are the attribute "PTYPE". Outcrop (polygon) attribute descriptions from the above files are as follows:
Surficial Deposits (Holocene and Pleistocene) Qs Detrital deposits Qh Hot-spring deposits Qhi Cemented ice-contact deposits localized by hot springs Qhe Hydrothermal-explosion deposits Plateau Rhyolite (Pleistocene) Central Plateau Member Qpcp Pitchstone Plateau flow Qpcg Grants Pass flow Qpcmf Moose Falls flow Qpcy West Yellowstone flow Qpct Trischman Knob dome Qpck Douglas Knob dome Qpco Tuff of Cold Mountain Creek Qpcr Bechler River flow Qpcs Summit Lake flow Qpcf Solfatara Plateau flow Qpch Hayden Valley flow Qpcb Buffalo Lake flow Qpcc Spring Creek flow Qpcc(?) Spring Creek(?) flow Qpcn Nez Perce Creek flow Qpcn(?) Nez Perce Creek(?) flow Qpcu Spruce Creek flow Qpcu(?) Spruce Creek(?) flow Qpce Elephant Back flow Qpcw West Thumb flow Qpca Aster Creek flow Qpcl Tuff of Bluff Point Qpcm Mary Lake flow Qpcd Dry Creek flow Roaring Mountain Member Qprs Crystal Spring flow Qprg Gibbon River flow Qpro Obsidian Cliff flow Qprc Cougar Creek dome Qprr Riverside flow Mallard Lake Member Qpm Mallard Lake flow Obsidian Creek Member Qpoh Gibbon Hill dome Qpop Paintpot Hill dome Qpow Willow Park dome Qpoa Apollinaris Spring dome Qpol Landmark dome Qpog Rhyolite-basalt mixed lavas of Gardner River Qpoz Rhyolite-basalt mixed lavas of Grizzly Lake Upper Basin Member Qpul Scaup Lake flow Qpub Biscuit Basin flow Qpud Dunraven Road flow Qpuc Canyon flow Qpus Tuff of Sulphur Creek Qput Tuff of Uncle Toms Trail Qge Gerrit Basalt (Pleistocene) Qo Osprey Basalt (Pleistocene)--Includes some gravel Qmr Madison River Basalt (Pleistocene) Qf Falls River Basalt (Pleistocene) Qsl Swan Lake Flat Basalt (Pleistocene) Qgc Basalt of Geode Creek (Pleistocene) Qm Basalt of Mariposa Lake (Pleistocene) Qso Sediments (Pleistocene)--Interlayered with Plateau Rhyolite Lava Creek Tuff (Pleistocene) Qylb Member B Qyla Member A Quf Undine Falls Basalt (Pleistocene)--Includes some gravel Mount Jackson Rhyolite (Pleistocene) Qmh Mount Haynes flow Qml Harlequin Lake flow Qmf Flat Mountain flow Qmw Wapiti Lake flow Qmm Moose Creek Butte flow Qmb Big Bear Lake flow Qlc Lewis Canyon Rhyolite (Pleistocene) Qw Basalt of Warm River (Pleistpcene) Island Park Rhyolite (Pleistocene) Qiw Warm River Butte dome Qym Mesa Falls Tuff (Pleistocene) Qtn Sediments and basalts of the Narrows (Pleistocene) Huckleberry Ridge Tuff (Pliocene) Tyhc Member C Tyhb Member B Tyha Member AGeneralized Attributes of Rock Units Older Than The Huckleberry Ridge Tuff; (used for showing all of the volcanic units of Yellowstone National Park in detail and older rocks generalized). These values correspond to the attribute "PTYPE-GEN".
Tj Junction Butte Basalt (Pliocene)--Includes some gravel Tcc Conant Creek Tuff (Pliocene) Te Gravel of Mount Everts (Pliocene) Thl Heart Lake Conglomerate (Pliocene) Ti Intrusive Rocks related to the Absaroka Volcanic Supergroup (Eocene) Tv Volcanic rocks of the Absaroka Volcanic Supergroup (Eocene) Ts Sedimentary rocks interlayered with Absaroka TWMZs Sedimentary rocks (Paleocene and Mesozoic) WPZs Sedimentary rocks (Paleozoic) WPCm Gneiss and schist, and minor pegmatite, serpentine, and diabase, quartzite, and amphibolite (Precambrian)Detailed Older Rock Unit Attributes. These values correspond to the attribute "PTYPE".
Ti Rhyodacite, quartz latite, quartz monzonite, and granodiorite in the Gallatin Range Tid Dacite intrusive rocks Twi Wiggins Formation To Two Ocean Formation Tli Intrusive rocks of Two Ocean and Langford Formations Tl Langford Formation Tlp Promontory Member Tlf Andesite lava flows Tt Trout Peak Trachyandesite Ttp Pacific Creek Tuff Member Tm Mount Wallace Formation Tms Slough Creek Tuff Member Tch Crescent Hill Basalt Tw Wapiti Formation Ts Sepulcher Formation Tsf Fortress Mountain Member Tsd Daly Creek Member Tlc Lost Creek Tuff Member Tec Elk Creek Basalt Member (also a member of Lamar River Formation) Tsc Nonvolcanic conglomerate, fanglomerate, and breccia facies Tlr Lamar River Formation Tlrf Andesite flows Tlri Sulphur Creek stock and associated dikes Tlrb Bodies of intrusive breccia Tc Cathedral Cliffs Formation TKv Volcanic rocks TKp Pinyon Conglomerate Kl Landslide Creek Formation, Everts Formation, Eagle Sandstone, Telegraph Creek Formation, Cody Shale, and Frontier Sandstone Kh Harebell Formation Kb Bacon Ridge Sandstone Kc Cody Shale Kf Frontier Formation Kmk Mowry Shale, Thermopolis Shale, and Kootenai Formation Kmt Mowry and Thermopolis Formations KJm Cloverly and Morrison(?) Formations Jm Morrison Formation Je Ellis Group Js Sundance and Gypsum Spring Formations WTRt Thaynes(?), Woodside, and Dinwoody Formations WTRc Chugwater and Dinwoody Formations Ps Shedhorn Sandstone Pp Phosphoria Formation and related rocks WPPq Quadrant Sandstone and Amsden Formation WPPMt Tensleep Sandstone and Amsden Formation Mm Madison Group Dot Three Forks Formation, Jefferson Formation,and Bighorn Dolomite Dd Darby Formation OWCb Bighorn(?) Dolomite, Gallatin Limestone, and Gros Ventre Formation WCs Snowy Range Formation and Pilgrim Limestone WCp Park Shale, Meagher Limestone, Wolsey Shale, and Flathead Sandstone WPCg Gneiss and schist Special Symbol Explanation WTR = Triassic WMz = Mesozoic WP = Pennsylvanian WC = Cambrian WPC = Pre-Cambrian OW = Open waterThe "INFO" file that contains the arc arttributes is geol83.aat. The attribute "LTYPE" contains the line type. "SEL" and "SYMB" are not currently used. The file that contains the line attributes and a brief description is: geol83.lul. This file is called geol83ll.dbf as a dbase file for ArcView. This file contains the attribute "DESC" with a general description of the line types.
1 Faults 25 Contacts 301 Open water boundaries