COVER Page Data for Quaternary faults in western Montana by Kathleen M. Haller, Richard L. Dart, Michael N. Machette, and Michael C. Stickney CONTENTS INTRODUCTION ...................................................................................................................................................... 1 STRATEGY FOR DATA COMPILATION ............................................................................................................ 1 EXPLANATION OF PRIMARY DATA FIELDS................................................................................................... 2 HISTORICAL SEISMICITY.................................................................................................................................... 3 HEBGEN LAKE EARTHQUAKE..................................................................................................................................... 4 SYNOPSIS OF QUATERNARY FAULTING IN WESTERN MONTANA......................................................... 5 LIST OF CONTRIBUTING INDIVIDUALS .......................................................................................................... 7 DEFINITION OF DATABASE TERMS.................................................................................................................. 2 FAULT AND FOLD DATABASE ............................................................................................................................ 5 606, DEADMAN FAULT (CLASS A)............................................................................................................................. 6 614, UNNAMED FAULT NEAR MONIDA (CLASS A)..................................................................................................... 8 641, RED ROCK FAULT (CLASS A)............................................................................................................................. 9 641a, Unnamed (north) section........................................................................................................................... 10 641b, Timber Butte section................................................................................................................................. 11 641c, Sheep Creeks section................................................................................................................................. 12 642, EMIGRANT FAULT (CLASS A) .......................................................................................................................... 14 642a, Unnamed (north) section........................................................................................................................... 15 642b, Unnamed (south) section .......................................................................................................................... 16 643, CENTENNIAL FAULT (CLASS A) ....................................................................................................................... 18 643a, Western Centennial Valley section ........................................................................................................... 19 643b, Red Rock Lakes section............................................................................................................................ 21 643c, Red Rock Pass section .............................................................................................................................. 22 643d, Henrys Lake section.................................................................................................................................. 23 644, BLACKTAIL FAULT (CLASS A) ......................................................................................................................... 25 644a, Unnamed (northwest) section.................................................................................................................... 26 644b, Cottonwood section .................................................................................................................................. 27 645, SWEETWATER FAULT (CLASS A) ..................................................................................................................... 29 646, LIMA RESERVOIR FAULT (CLASS A) ................................................................................................................ 31 647, KISSICK FAULT (CLASS A)............................................................................................................................... 33 648, RED ROCK HILLS FAULT (CLASS A) ................................................................................................................ 35 648a, Monument Hill section.............................................................................................................................. 36 648b, Unnamed (central) section ........................................................................................................................ 37 648c, Unnamed (south) section........................................................................................................................... 38 649, TOBACCO ROOT FAULT (CLASS A) .................................................................................................................. 39 650, SOUTH HORSE PRAIRIE BASIN FAULT (CLASS A)............................................................................................. 41 651, EAST MUDDY CREEK FAULT (CLASS A) .......................................................................................................... 42 652, WEST MUDDY CREEK FAULT (CLASS A) ......................................................................................................... 44 653, UNNAMED FAULT NEAR TRAIL CREEK (CLASS A) ........................................................................................... 46 654, UNNAMED FAULT NEAR MIDDLE CREEK (CLASS A)........................................................................................ 48 655, MADISON FAULT (CLASS A) ............................................................................................................................ 50 655a, Unnamed (north) section........................................................................................................................... 52 655b, Madison Canyon section........................................................................................................................... 54 655c, Unnamed (south) section........................................................................................................................... 56 656, HEBGEN FAULT (CLASS A) .............................................................................................................................. 59 657, RED CANYON FAULT (CLASS A)...................................................................................................................... 62 657a, Unnamed (northwestern) section .............................................................................................................. 63 i 657b, Richards Creek section ............................................................................................................................. 65 657c, Maple Creek section.................................................................................................................................. 66 658, WEST FORK FAULT (CLASS A)......................................................................................................................... 69 659, UNNAMED FAULTS IN HEBGEN LAKE BASIN .................................................................................................... 71 660, UNNAMED FAULT NEAR MILE CREEK (CLASS A) ............................................................................................ 74 661, WOLF CREEK GRABEN..................................................................................................................................... 76 662, BRADLEY CREEK FAULT (CLASS A) ................................................................................................................ 78 663, BITTERROOT FAULT (CLASS A) ....................................................................................................................... 80 664, UNNAMED FAULT NEAR CLIFF LAKE (CLASS A).............................................................................................. 83 665, RUBY RANGE WESTERN BORDER FAULT (CLASS A)......................................................................................... 84 666, RUBY RANGE NORTHERN BORDER FAULT (CLASS A) ...................................................................................... 86 667, GEORGIA GULCH FAULT (CLASS A)................................................................................................................. 88 668, VENDOME FAULT (CLASS A) ........................................................................................................................... 91 669, ROCKER FAULT (CLASS A) .............................................................................................................................. 93 670, CENTRAL PARK FAULT (CLASS A)................................................................................................................... 95 671, CANYON FERRY FAULT (CLASS A) .................................................................................................................. 97 671a, Unnamed (north) section..........................................................................................................................