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MONTANA BUREAU OF MINES AND Open File MBMG 511, Plate 1 of 1 A Department of Montana Tech of The University of Montana Geologic , Ringling 30'x60' Quadrangle

MAP SYMBOLS

Contact: dashed where approximately A' located; dotted where concealed

Fault: unknown sense of movement; dotted where concealed

Castle Blackhawk Flagstaff Reverse or thrust : teeth on upthrown Stock block; dashed where approximately located; dotted where concealed Stock Corral Creek Indian Creek decollement—A' plane of

Anticline sliding on which locally intensely folded post-Precambrian rocks were thrust eastward into the Crazy Mountains Basin off the southeast margin of the Big Belt Mountains in late Paleocene time (Skipp

Anticline and Hepp, 1968)

Anticline: showing trace of axial plane and Gordon Butte plunge direction where known; dotted where concealed

Robinson Asymmetric anticline: showing trace of axial plane; dotted where concealed, shorter arrow on more steeply dipping limb

32 of inclined bed Anticline

Strike and dip of 75 Battle overturned bed Sill

Horizontal bed Zone Creek

Fault Loweth Little Elk Vertical bed Thrust Moss (Ti): shown in red on map Big Elk Dome Dikes/Sills (Ti): shown in red on map Agate

Anticline Sills (Ti): shown in magenta on map

Anticline Comb Creek Stock(?)

Zone

Fault Loco A Mountain

Shields Stock 100K Quad index Thrust

CANYON WHITE BIG FERRY DAM SULPHUR SNOWY SPRINGS MOUNTAINS

River Creek TOWNSEND RINGLING HARLOWTON

BOZEMANLIVINGSTON BIG TIMBER

Battle Anticline

Porcupine Butte MONTANA Fault

Potter Sill

Anticline Anticline

Basin

Thrust

Fault

Anticline

Thrust

100 0 100 Miles Elkhorn

Butte Ringling

Fork

Horse

Middle

Big

Timber

Campfire Lake Stock Stock

Base from U.S. Ringling 30'x60' topographic quadrangle Map date: 1993 Projection: UTM zone 12; 1927 NAD

Montana Bureau of Mines and Geology Open File 511 Preliminary Geologic Map of the Ringling 30' x 60' Quadrangle, Central Montana

Compiled and mapped by Catherine McDonald, David A. Lopez, Richard B. Berg,

Maps may be obtained from and Richard I. Gibson Partial support has been provided by the STATEMAP component of the National Cooperative Geologic Publications Office Mapping Program of the U.S.Geological Survey under Contract Number 03HQPR01980. Montana Bureau of Mines and Geology 1300 West Park Street, Butte, Montana 59701-8997 Phone: (406) 496-4167 Fax: (406) 496-4451 GIS production: Ken Sandau and Paul Thale, MBMG. Map layout: Susan Smith, MBMG. http://www.mbmg.mtech.edu 2005