[Italic Page Numbers Indicate Major References] Abitibi Volcanic Belt, 129 Actinolite, 125 Albi Te, 115 Albuquerque, New Mexico

Index [Italic page numbers indicate major references]

Abitibi volcanic belt, 129 Cambrian plutons, Colorado, 49,59 East Pecos Baldy, New Mexico, 103 actinolite, 125 carbonate, 124, 128 Eastern Granite-Rhyolite Province, 59 albi te, 115 Cascade Quartzite, 23, 29 El Rito, New Mexico, 89, 102, 105, Albuquerque, New Mexico, 147 Cedro Canyon, New Mexico, 89, 102, 106 Aleutian arc, 135 103, 104, 105, 106 Electra Lake Gabbro, 66, 68, 75, 82 allanite, 75, 81, 82 Cenozoic, 49, 83, 107, 113 Elevenmile Canyon batholith, 57 Alps, 9 Centennial, Wyoming, 6 Elk Mountain, New Mexico, 121, aluminum silicate, 106 Centennial Ridge, Wyoming, 6 124, 125 amphibole, 121 cerium, 131, 152 Elkhom Mountain Gabbro, 7, 29 Anadarko Basin, 62 Cerrito Colorado, New Nexico, 102, Embudo Granite, 121 andalusite, 68, 87, 89, 93, 102, 103, 104 Encampment River Granodiorite, 105, 106 cesium, 128, 133, 152 Sierra Madre, 6, 7, 17, 25, 29 Andes, Peru, 83, 84 Chaparral fault, Arizona, 156, 157 Eolus batholith, 75 andesine, 115, 116 chevkinite, 82 Eolus Granite, 65, 66, 68, 73, 75 Animas Canyon, 66, 68 Cheyenne belt, 1, 13, 15, 17, 26, epidote, 89, 106, 115, 121, 124, Animas River, Colorado, 68 27, 29, 30 128, 167 apatite, 75, 76, 79, 82, 147, 149, chlorite, 68, 89, 91, 100, 106, 115, 150 121, 124, 125, 128, 167 feldspar, 25, 34, 38, 79, 125 Archean chloritoid, 89, 106 Fletcher Park, Sierra Madre, 4, 17 komatiites, 129, 130 chromium, 128, 130, 134, 152 folding, 155 rocks, 1, 2, 7, 8, 15, 23, 29, 43, Cibola gneiss, 147, 149, 150 Fowler Pass fault, New Mexico, 111, 119, 157 Cimarron Canyon, New Mexico, 111 113, 115, 116 Wyoming Province, 10, 13, 30 Cimarron Mountains, New Mexico, Front Range, Colorado, 8, 15, 17, Arizona, 33, 41, 43, 73, 155 91, 111 26, 29, 43, 49 Ash Creek Group, 157 clay minerals, 115 Australia, southeastern, 82 Clear Creek, 111 Gar ell Peak batholith, 54 Cleator, Arizona, 167 garnet, 4, 5, 88, 89, 91, 92, 93, Baggot Rocks Granite, 15, 23, 28 clinopyroxene, 7, 53, 76, 115, 128, 103, 104, 105, 134, 167 Bakers Bridge Branite, 65, 66, 68 134 Gem Park, Colorado, 58 barium, 79, 80, 128, 133, 152 clinozoisite, 167 Glorieta Baldy, New Mexico, 91, Basin and Range Province, 155 Coastal batholith, Peru, 83 104 Bear Basin, Colorado, 57 cobalt, 128, 152 Gold Basin, Colorado, 40, 42 Bear Creek, Colorado, 57 Cochetopa Canyon, 34, 41 Granite, Wyoming, 6, 17 Big Bug Group, Arizona, 156, 157, Cochetopa Succession, 34, 36, 38, Granite Mountain, 27 160 40, 42, 43 Granite of Bear Basin, 57 Big Creek Gneiss, Sierra Madre, 6, Colorado, 33,49, 135 Granite of Bear Creek, 57 15 23, 24, 27, 29 northern, 7, 8, 13 Granite of Cochetopa Canyon, 41, biotite, 5, 6, 7,'15,'23, 76, 77, 80, southern, 120 55, 59 81, 88, 89, 91, 92, 93, 104, southwestern, 65, 75 Granite of South Beaver Creek, 40 105. 115, 116, 120, 124, 128, Colorado mineral belt, 83 Granite of Tolvar Peak, 39, 42 147, 151, 167 Colorado Plateau, 155 Granite of Williams Creek, 57 Black Hills, South Dakota, 29, 157 Colorado Proterozoic province, 1, 2 Granite of Wood Gulch, 41, 59 Boneyard Gulch, Colorado, 53, 56 Cooper Creek, 17 Green Gulch Volcanics, 157, 160 Boulder Creek batholith, 26, 29, 55 copper, 128 Green Mountain, Wyoming, 17, 25 Boulder Creek pluton, 57 Cow Creek, New Mexico, 128 Green Mountain Formation, 2, 15, Boxelder Formation, Black Hills, Crampton Mountain batholith, 53, 57 17, 24, 25, 26, 29 South Dakota, 29 Crazy Basin area, Arizona, 155, 169 Guadalupita, New Mexico, 104 Bradshaw Mountains, Arizona, 160 Crazy Basin Quartz Monzonite, 167 Gunnison, Colorado, 33, 49, 55, 58, Brady Butte, Arizona, 155, 160, 161, Cripple Creek Batholith, 57 59, 120 167, 169 Brady Butte Granodiorite, 155, 157, Dalton Canyon, New Mexico, 121 hafnium, 128 160, 161 Deep Lake Group, 15, 23, 28, 29, 30 Hardscrabble Creek, Colorado, 57 Buffalo Pass Pluton, northern Democrat Creek, Colorado, 58 Hartville Uplift, 2 Colorado, 8, 17, 26 Devonian, 83 hematite, 77, 81, 100, 103, 121 Burned Mountain, New Mexico, 135 Diamond Rim Intrusive Suite, 155 Hog Park, Sierra Madre, 17, 25, 29 Dockum Group, 113 hornblende, 4, 5, 6, 7, 15, 23, 24, calcic plagioclase, 128 Doctor Creek area. New Mexico, 131, 53, 76, 79, 82, 100, 115, 116, c&lcitc 115 132, 135 124, 128, 134, 147 calcium, 91, 93, 103, 104, 116 Doctor Creek dacite, 119, 131 Horse Creek, Medicine Bow calcium oxide, 131 Dubois Greenstone, 34 Mountains, 29 Caledonian orogeny, 84 Dubois Succession, 34, 37, 38, 42, Horse Creek Granite, 7, 25 Caledonides, Scotland, 83, 84 43 Howard, Colorado, 33, 36, 41 California, 33 Durango, Colorado, 120 Huston Park, Sierra Madre, 4

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957293/spe235-bm.pdf by guest on 02 October 2021 174 Index

ilmenite, 76, 77, 100, 121 Mississippian, 113 128 Indian Creek, New Mexico, 121 Missouri, 33, 49, 59 Powderhorn, Colorado, 34, 37, 38, Iron Hill Complex, Colorado, 58 Monte Largo Range, New Mexico, 58, 62 Iron King Volcanics, 155, 157, 160, 89, 105 Powderhorn Granite, 38, 39, 42 167 monzodiorite, 76 Precambrian iron, 91, 93 monzogranite, 76, 77, 82 Arizona, 155 iron oxide, 124 Moore Gulch fault, Arizona, 156 Colorado, 13, 83 Irving Formation, 65, 66, 68, 70, 73 Moreno Valley, New Mexico, 111 New Mexico, 111, 113, 116, 117, Mt. Tyndall, Colorado, 51, 53, 55, 120, 121, 147 Jerome, Arizona, 157 59 Wyoming, 13 Jones mine, New Mexico, 121 Mule Canyon, Arizona, 160, 165, Priest pluton, 91 Juan Tabo series, New Mexico, 149, 167 Proterozoic 150, 152, 153 Mullen Creek, 8 Arizona, 155 Mullen Creek Mafic Complex, 7 Colorado, 33, 49, 53, 57, 58, 59, Kansas Mullen Creek-Nash Fork shear zone, 65 northern, 42 1 New Mexico, 87, 107, 111,119, southern, 59 muscovite, 89, 91, 92, 93, 100, 104, 147, 153 western, 43, 55 105, 106, 107, 116, 124, 147, Wyoming, 1, 29 Keystone Quartz Dorite, Medicine 167 Wyoming Province, 13, 15, 23, Bow Mountains, 7, 17, 25, 29 27, 29 Kiowa Mountain, New Mexico, 104 Nacimiento" Range, New Mexico, 88 pyrite, 147 kyanite, 87, 89, 91, 93, 100, 101, Nebraska, southern, 42 pyroxene, 24, 134 102, 103, 106, 116 Needle Mountains, Colorado, 34, 57, 59, 65, 75, 120 quartz, 6, 17, 25, 34, 38, 53, 68, 76, labradorite, 115 New Mexico, 33, 41, 43, 55, 65, 68, 77, 89, 100, 101, 103, 104, Lake Owen Mafic Complex, 7 73, 87, 111, 119, 147 105, 106, 113, 115, 116, 119, lanthanum, 133 nickel, 128, 130, 132, 134 121, 124, 125, 128, 130, 134, Laramide, 111, 113 niobium, 130, 134 147 Laramie Anorthosite, 1, 8 Questa, New Mexico, 87, 88, 89, 93, Laramie Basin, 2, 8 Oak Creek Pluton, Colorado, 57 105, 106 Laramie Mountains, Wyoming, 1, 2, Ohio City, Colorado, 38, 39 6, 7, 8, 10, 28 Oklahoma, 59, 62 Rambler Granite, Medicine Bow Late Archean, 1 oligoclase, 147 Mountains, 8 lead, 36, 128 olivine, 115, 130, 132, 134 rare-earth elements, 36, 75, 78, 83, leucoxene, 77, 81 opaque minerals, 115 128, 130, 131, 132, 135, 151, Libby Creek Group, 15, 17, 29, 30 ophiolite, 134 152, 153 Llano Uplift, Texas, 59 Ortega Group, 73, 88, 103, 120 Rawah batholith, 17, 26, 29 Long Creek Mountain, 27 orthopyroxene, 53 Richeau Hills, Wyoming, 1 Lost Cabin fault, New Mexico, 113 Rincon Range, New Mexico, 88, 89, Louis Lake, 27 Paleozoic, 107 91, 101, 104 Palisades, New Mexico, 113, 115 Rincon Ridge, New Mexico, 147 Macho Creek, New Mexico, 121, Park Range, northern Colorado, 7, 8, Rio Grande rift, New Mexico, 147 124, 128 17, 26, 29 Rio Mora, New Mexico, 101, 103, magnesium, 91, 92, 93, 134 Pecos Baldy, New Mexico, 103 105 magnesium oxide, 130 Pecos greenstone belt. New Mexico, Rio Mora Range, New Mexico, 88, magnetite, 76, 77, 81, 121, 128, 91, 104, 105, 119 89, 91, 100 134, 147 Pecos mine, New Mexico, 121 Rocky Mountains Magnolia Formation, Sierra Madre, Pecos River, New Mexico, 120, 121, Colorado, 13, 57 23, 28, 29 124 New Mexico, 107 manganese, 89, 91, 93, 103, 104, Pedernal Range, New Mexico, 102, rubidium, 79, 80, 133, 149, 151, 152 128 135 Rudolph Hill, Colorado, 38 Manzanita Mountains, New Mexico, Pennsylvanian, 147 135 Phanerozoic, 8, 42, 49 Saguache County, Colorado, 41 Manzano Mountains, New Mexico, Phantom Canyon batholith, St. Francois Mountains, Missouri, 88, 91, 102, 103, 104, 105, Colorado, 55 49, 59 107 Phantom Lake Metamorphic Suite, St. Vrain batholith, Colorado, 82 Mazatzal orogeny, 156 15, 23 Salida, Colorado, 33, 49, 55, 58, 59, McClure Mountain Complex, 49, 51, Philmont Ranch, New Mexico, 111 120 52, 57, 58, 62 Picuris-Pecos fault, 101, 120, 121 samarium, 131 Medicine Bow Mountains, Wyoming, Picuris Range, New Mexico, 88, 91, San Cristobal Canyon, New Mexico, 1, 2, 3, 5, 6, 7, 8, 9, 10, 13, 100, 101, 102, 105, 117 102, 104 17, 25, 28, 29, 30 Pike's Peak batholith, Colorado, 59 San Isabel batholith, 52, 57, 59 Mesozoic, 83, 113 Pine River, Colorado, 68, 70 San Isabel Granite, 57 Mexico, northern, 33 Pine River batholith, Colorado, 75 Sandia granite, 147 microcline, 6, 25, 76, 77, 116, 147 plagioclase, 2, 6, 15, 53, 76, 77, 89, Sandia Mountains, New Mexico, 89, Midcontinent rift system, 62 91, 92, 93, 104, 116, 119, 121, 91, 147 Middle Mountain, Colorado, 68, 70 124, 128, 134, 147 Sangre de Cristo Mountains, New migmatite, 104 potassium feldspar, 2, 4, 77, 80, 87, Mexico, 111, 119 Mingus Mountain, Arizona, 157 88, 91, 107, 116, 119, 124, Santa Fe, New Mexico, 120, 121

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957293/spe235-bm.pdf by guest on 02 October 2021 Index 175

Santa Fe Range, New Mexico, 87, Tenmile Granite, 65, 66 68, 69, 72 70, 72, 73 121 Tertiary, 113, 155, 165 Vallecito Creek, 68, 70 scandium, 128, 135 Teton Range, northwestern Wyoming, vanadium, 128, 130 sericite, 68, 92, 125 28 volcanic rocks serpentine, 128 Texas Gulch Formation, 155, 157, Arizona, 165 Sherman Granite, 1, 8, 10 160, 161, 165, 167 New Mexico, 119, 120, 128, 129, Shylock fault zone, Arizona, 156, Texas panhandle, 59 135 157 thorianite, 82 volcanism Colorado, 33, 41, 42 Sierra Madre, Wyoming, 1, 2, 4, 7, thorium, 82, 128, 130, 133, 134 New Mexico, 121 8, 9. 10, 13, 15, 17, 23, 14, Tijeras Canyon, New Mexico, 91, 26, 29, 30, 43 103, 149, 151 Sierra Madre Granite, 7, 8, 17, 25, titanium, 93, 130, 131, 132, 134, West McCoy Gulch, Colorado, 57 26, 29 135 West Needle Mountains, Colorado, sillimanite, 4, 5, 87, 88, 89, 91, Tolby Creek, New Mexico, 111, 116 66, 68, 69 102, 103, 104, 105, 106, 107, Tolby Peak, New Mexico, 116 Westcliffe, Colorado, 51, 55 116 Tolvar Peak, 39 Western Granite-Rhyolite Province, Silurian, 83 Tonalité of Gold Basin, 42 59 Silver Piume batholith, Colorado, 82 Tonto Basin Supergroup, 155 Wet Mountains, Colorado, 26, 43, 49 Silver Piume pluton, 57 tourmaline, 124, 128, 147 Wichita Mountains, Oklahoma, 62 Slaughterhouse Formation, 17 Transition Zone, Arizona, 155 Williams Creek, Colorado, 57 Snowy Pass Supergroup, 2, 9 tremolite-actinolite, 128 Wilson Park, Colorado, 51 sodic andesine, 76, 115 Triassic, 113 Wind River Rnage, 27 sodic plagioclase, 121, 128 Trimble Granite, 57, 66, 75 Wolf Creek, Arizona, 161, 165 sodium, 128 Truchas Range, New Mexico, 88, 89, Wood Gulch, 41 South Beaver Creek, Colorado, 40 91, 100, 101, 103, 104, 105 Wyoming South Dakota, 29 Tusas Range, New Mexico, 88, 89, southeastern, 13, 135 southern 1, 43 sphene, 75, 76, 82, 121, 124, 128, 100, 101, 102, 103, 104, 105, Wyoming craton, 13 147, 149 111, 117, 120, 135 Wyoming Province, 13, 27, 29 Spring Lake Granodiorite, 23 Twilight Gneiss, 34, 65, 66, 68, 73 Spring Mountain, New Mexico, 121 Twin Mountain batholith, 53, 57 Spud Mountain Volcanics, 155, 157, Yavapai orogeny, 156 160, 161, 167 Uncompahgre Canyon, 66, 68 Yavapai Supergroup, 155, 156, 157, staurolite, 89, 91, 92, 104, 106 Uncompahgre Formation, 65, 66, 68, 160, 161, 167, 169 strontium, 79, 80, 128, 149, 151, 69, 70, 72, Ti ytterbium, 131 152 uraninite, 75, 82 uranium, 36, 75, 128, 133 yttrium, 128, 130, 131, 133, 135 tantalum, 128, 130, 133, 134 uranothorite, 75, 82 zinc, 128 Taos Range, New Mexico, 87,102, 111, 113, 117, 120 Vadito Group, 88, 103, 120 zircon, 75, 76, 81, 82 tectonism, 107 Vallecito Conglomerate, 65, 66, 68, zirconium, 128, 130, 131, 133, 135 Zuni Mountains, New Mexico, 89

Typeset by WESType Publishing Services, Inc., Boulder, Colorado Printed in U.S.A. by Malloy Lithographing, Inc., Ann Arbor, Michigan

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957293/spe235-bm.pdf by guest on 02 October 2021 THE GEOLOGICAL SOCIETY } p OF AMERICA \v py 3300 Penrose Place. P.O. Box 9140 V/ssH-r Boulder, Colorado 80301

Contents

Preface «

Dedication vii

A review of the geology and structure of the Cheyenne belt and Proterozoic rocks of

southern Wyoming 1

R. S. Houston, E. M. Duebendorfer, K. E. Karlstrom, and W. R. Premo

Zircon geochronology of Precambrian rocks in southeastern Wyoming and northern Colorado .13

Wayne R. Premo and W. R. Van Schmus

U - Pb geochronology of the Proterozoic volcano- plutonic terrane in the Gunnison and

Salida areas, Colorado 33

M. E. Bickford, R. D. Shuster, and S.J. Boardman

U - Pb zircon geochronology of Proterozoic and Cambrian plutons in the Wet Mountains and

southern Front Range, Colorado 49

M. E. Bickford, R. L. Cullers, R. D. Shuster, W. R. Premo, and W. R. Van Schmus

Proterozoic geology of the Needle Mountains; A summary 65

Barbara J. Tewksbury

Mid-Proterozoic postorogenic granites, and associated uranium mineralization of the Needle

Mountains, southwestern Colorado 75

James D. Collier

The role of crustal extension in the metamorphism of Proterozoic rocks in northern

New Mexico 87

Jeffrey A. Grambling, Michael L. Williams, Roger F. Smith, and Christopher K. Mawer

Proterozoic supracrustal rocks and plutons of the Cimarron Canyon area, north-central

New Mexico 111

Reinhard A. Wobus

Geology and geochemistry of early Proterozoic volcanic and subvolcanic rocks of the Pecos

greenstone belt, Sangre de Cristo Mountains, New Mexico 119

James M. Robertson and KentC. Condie

Geochronologic study of Precambrian rocks of the Sandia Mountains, New Mexico 147

Douglas G. Brookins and Arun Majumdar

Early recumbent folding during Proterozoic orogeny in central Arizona 155

Karl E. Karlstrom

Index 173

ISBN 0-8137-2235-7

Downloaded from http://pubs.geoscienceworld.org/books/book/chapter-pdf/957293/spe235-bm.pdf by guest on 02 October 2021