Geologic Studies in Alaska by the U.S. Geological Survey, 1992

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74 GEOLOGIC STUDIES IN ALASKA BY THE U.S. GEOLOGICAL SURVEY, 1992 Table 1. Selected stages of evolution of nomenclature in northern Alaska and their sources [Symbols: AT, Angayucham terrane; AAT, Arctic Alaska terrane; AAS, Arctic Alaska superterrane] Snelson and Tailleur, Martin,l970 Lerand, 1973 Pessel and others, Mayfield and others, Mull, 1982 1968 1973 1978 Misheguk thrust Ultrabasic pluton tectonic unit sequence Misheguk thrust Ultrabasic pluton tectonic unit sequence Nuka Ridge thrust Nuka Ridge tectonic unit sequence Ipnavik River Ipnavik River thrust tectonic unit sequence thrust DeLong sequence tectonic unit Wulik thrust tectonic unit Brooks Range Foothills thrust sequence and tectonic unit Ivotuk Hills sequence Franklinian sequence Franklinian, Ellesmerian, and Brookian sequences Schist belt Misheguk Misheguk Mountain thrust Mountain sequence allochthon Misheguk Copter Peak Mountain thrust sequence allochthon Nuka Ridge thrust Nuka Ridge sequence allochthon Ipnavik River Ipnavik River thrust sequence allochthon Kelly River thrust Kelly River sequence allochthon Northwestern Brooks Range thrust sequence Northwestern and north-central Brooks Range thrust sequences Endicott Mountains allochthon autochthon Mayfield and others, 1983, 1988 Misheguk Mountain allochthon Copter Peak allochthon Nuka Ridge allochthon Ipnavik River allochthon Kelly River allochthon Picnic Creek allochthon Brooks Range allochthon autochthon Schwatka sequence Schwatka sequence Schwatka sequence Copter Peak and Mishiguk Mountain allochthons
APPEAL FOR NONPROLIFERATION OF ESCALATING TERRANE NOMENCLATURE Table 1. Selected stages of evolution of nomenclature in northern Alaska and their sources-Continued [Symbols: AT, Angayucham terrane; AAT, Arctic Alaska terrane; AAS, Arctic Alaska supenerranel Jones and others* Till and others, 1988 Patton and Box, 1989 Mull, 1989 and Moore, 1992 1987 1992 Angayucham terrane Angayucham terrane DeLong Mountains subterrane (AAT) DeLong Mountains subterrane (AAT) DeLong Mountains subterrane (AAT) DeLong Mountains subterrane (AAT) Endlcott Mountains subterrane (AAT) North Slope subterrane (AAT) This report Misheguk Brooks Range Angayucham Angayucham Angayucham Mountain ophiolite terrane terrane terrane allochthon (AT) allochthon (AT?) Angayucham Copter Peak Angayucham Angayucham terrane allochthon (AT) terrane terrane 75 Brooks Range basalt allochthon (AT?) Nuka Ridge DeLong Mountains DeLong Endicott-DeLong Mountains terrane allochthon belt* all0chthon (AAT) subterrane (AAT) (Us) Ipnavik &ver DeLong Mountains DeLong Endicott-DeLong Mountains terrane allochthon belt* (AAT) subterrane (AAT) @AT) Kelly River DeLong Mountains DeLong Endicott-DeLong Mountains terrane allochthon belt* (UT) subterrane (AAT) (AAS) (MT) Picnic Creek DeLong Mountains DeLong Mountains terrane Endicott-DeLong allochthon belt* (AAT) subterrane (AAT) WAS) (AAT) Endicon Endicott Endicott Endicon-DeLong Mountains Mountains Mountains terrane allochthon belt* allochthon (AAT) subterrane (AAT) (AAS) (AAT) Autochthon and Arctic Slope. North Slope North Slope parautochthon parautochthon subterrane (AAT) terrane (AAS) (AAT) (AAT) Internal Internal Hamrnond metamorphic and Hammond Hamrnond terrane Central belt metamorphic belt subterrane (AAT) plutonic belt subterrane (AAT) (AAS) @AT) (AAT) Hammond and Coldfoot Schist belt subterranes (AAT) Coldfoot subterrane (AAT) Angayucham terrane Coldfoot Coldfoot terrane Schist (AAT) subterrane (AAT) (AAS) Schist belt (AAT) Slate Creek thrust Slate Creek Slate Creek terrane panel (AT) (AAT) subterrane (AAT) WAS) Slate Creek sbuctural belt (MT) Narvak and Kanuti Narvak and Kanuti Angayucham Angayucham Narvak and Kanuti thrust panels (AT) thrust panels (AT) terrane terrane thrust panels (AT) *The Endicott-DeLong allochthon belt includes the Endicott, Picnic Creek, Kelly River, Ipnavik River, and Nuka Ridge allochthons, but these individual tectonic units are too small to be mapped at small scales.
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Geologic Studies in Alaska by the U
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CONTENTS Introduction Cynthia Dusel
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CONTENTS CONTRIBUTORS TO THIS BULLE
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GEOLOGIC STUDIES IN ALASKA BY THE U
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LATE HOLOCENE LONGITUDINAL AND PARA
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DEEP-WATER LITHOFACIES AND CONODONT
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Table 1. Locality register for key
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Table 1. Locality register for key
Page 29 and 30: DEEP-WATER LITHOFACIES AND CONODONT
Page 37 and 38: LITHOFACIES AND CONODONTS OF CARBON
Page 49 and 50: LITHOFACES AND CONODONTS OF CARBONI
Page 51 and 52: Table 1. Conodont faunules and lith
Page 55 and 56: DEPOSITIONAL SEQUENCES IN ATIGUN SY
Page 65 and 66: U-Pb AGES OF ZIRCON, MONAZITE, AND
Page 77 and 78: APPEAL FOR NONPROLIFERATION OF ESCA
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Page 83 and 84: APPEAL FOR NONPROLIFERATION OF ESCA
Page 85 and 86: FAVORABLE AREAS FOR METALLIC MINERA
Page 97 and 98: GOLD AND CINNABAR IN HEAVY-MINERAL
Page 107 and 108: EARLY CENOZOIC DEPOSITIONAL SYSTEMS
Page 111 and 112: EARLY CENOZOIC DEPOSITIONAL S YSTEM
Page 125 and 126: RESERVOIR FRAMEWORK ARCHITECTURE, C
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RESERVOIR FRAMEWORK ARCHITECTURE, C
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GEOCHEMISTRY OF OPHIOLITIC ROCKS FR
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134 GEOLOGIC STUDIES IN ALASKA BY '
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136 GEOLOGIC STUDIES IN ALASKA BY T
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GEOLOGIC STUDIES IN ALASKA BY THE U
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1 150 GEOLOGIC STUDIES IN ALASKA BY
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1 64 GEOLOGIC STUDlES IN ALASKA BY
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166 GEOLOGIC STUDES IN ALASKA BY TH
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Table 1. Isotopic ages of intrusive
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Table 1. Isotopic ages of intrusive
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GEOCHEMICAL EVALUATION OF STREAM-SE
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20 GEOLOGIC STUDIES IN ALASKA BY TH
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Table 3. Summary of geochemical sig
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GEOCHEMICAL CHARACTER OF UPPER PALE
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RECONNAISSANCE GEOCHEMISTRY OF BASA
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OSTRACODE ASSEMBLAGES FROM MODERN B
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RUBIDIUM-STRONTIUM ISOTOPIC SYSTEMA
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RUBIDIUM-STRONTIUM ISOTOPIC SYSTEMA
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US. GEOLOGICAL SURVEY REPORTS ON AL
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U.S. GEOLOGICAL SURVEY REPORTS ON A
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U.S. GEOLOGICAL SURVEY REPOR TS ON
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REPORTS ABOUT ALASKA IN NON-USGS PU
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REPORTS ABOUT ALASKA IN NON-USGS PU
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Geologic Studies in Alaska by the U.S. Geological Survey, 1992

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