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

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Table 1. Conodont faunules and lithologies, upper part of Kayak Shale and Lisburne Group, western lvotuk Hills, Killik River B-5 quadrangle, Alaska [See figures 1 and 3 for geographic and stratigraphic relationships. CAI, color alteration index] Kayak Shale AND POSITION ABOVE BASE OF SECTION 90AD59C 1 68"28'50"1 155"42'45" (base of section); 68"28'38"/ 155O42'45" section) LlTHOLOGY AND CONOWNT FAUNULE ICrinoidal packstone. 5 Pa elements Bisparhodus aculeatus anteposicornis (Scott) (fig. ST) 66 Pa element fragments Bisparhodus sp. indet. Hindeodus crassidenlatus (Branson and Mehl) (fig. 8s) 12 Pa and I Sc elements Kladognarhus sp. 6 P, 14 M, 10 Sa and 17 Sc elements 73 Pa elements Polygnarhus communis Branson and Mehl (fig. 8R) 2 Pa elements Polygnarhus lacinatus circaperipherus Rhodes, Austin, and Druce (fig. 8P, Q) 8 Pa element fragments Pseudopoly-gnathus spp.? indet. Synclydognathus geminus (Hinde) 7 Pa, 1 Pb and 1 S elements (fig 8 0) UNASSIGNED ELEMENTS: 1 PB, 58 M (3+ morphotyps), 6 Sa (2 morphotypes), 3 I Sb, and 16 Sc (2+ morphotypes) 100+ indet. bar, blade, and platform fragments Crinoidal packstonelgrainstone. 9 Pa e~emknt fragments Bispathodus utuhensis Sandberg and Gutschick? 3 Pa element fragments Cavusgnarhus sp. indet. (fig. 8N, 0) Kladognarhus sp. indet. 2 Sa and 7 Sc elements Synclydognarhus geminus (Hinde) (fig. 8E, F) 1 M and I Sb elements UNASSIGNED ELEMENTS: 1 Pband3M 74 indet. bar, blade, and platform fragments 1 FOSSIL AGE, BIOFACTES, AND I REMARKS 1 CAI late Early Mississippian (early Osagean). Postmortem transport from or within the polygnathid- bispathodid biofacies; faunule has some elements representing a variety of platform or shelf biofacies. CAI=I .5 early Late Mississippian (late Meramecian). Biofacies indeterminate: faunule represents postmortem mixing of shallow- to deeper water and (or) pelagic species. CAI=I-1.5 All samples prefixed 90AD59 are from a measured section (see fig. 1). Virtually all conodonts are partly to completely coated by adventitious organic matter.
Table 1. Conodont faunules and lithologies, upper part of Kayak Shale and Lisburne Group, western lvotuk Hills, Killik River B-5 quadrangle, Alaska-Continued Lisburne Group (lower unit) Lisburne Group (middle unit) FIELD NO. (USGS COLLN.NO.) AND POSTTION ABOVE BASE OF Lisburne Grouo I 90AD59- 190: 1 (upper unit) Lisburne ~ r o u ~ L A D E NJ LONGITUDE W. 68"28'50"/ 155"42'45" (base of section); 68"28'38"1 155"42'45" (top of section) 190 m 92AD41A 1 68"28'36"/ LITHOLOGY AND CONODONT FAUNULE Crinoidal packstonelgrainstone. 47 Pa element fragments Bisapthodus utahensis Sandberg and Gutschick (fig. 81-0 Klndognuthus sp. indet. (fig. 8M) 7 unassigned M elements 94 indet. bar, blade, and platform fragments I Bryozoan crinoidal wackestone. 19 Pa elements Bisupthodus lrrahensis Sandberg and Gutschick (fig. 8G, H) 2 Pa element fragments Cavusgnarhus sp. Klodognarhus sp. indet. (fig. 8L) 3 Sa and 5 Sc elements 1 unassigned Sc element 52 indet. bar, blade, and platform fragments Thin-bedded dolostone. Dolostone containing sparse bioclasts and gray, noncalcareous to slightly calcareous shale partings. 3 indet. bar and blade fragments Thin-bedded, fine-grained carbonate rocks. 5 incomplete and (or) juvenile Pa elements Gnathodus bilinearus (Roundy) (fig. 8A) 4 Pa elements Gnathodus defectus Dunn (fig. 8 B) 1 Pa element Gnathodus girtyi simplex Dunn (fig. 8 C) 15 indet. bar, blade, and platform fragments FOSSlL AGE, BIOFACES, AND CAI early Late Mississippian (late Meramecian). Biofacies indeterminate: faunule represents postmortem mixing of shallow- to deeper water and (or) pelagic species. CAI=]-1.5 early Late Mississippian (late Meramecian). Bisapthodid(?) biofacies or mixing of pelagic and shallow- water elements. CAT=[-1.5 Probably late Late Mississippian (Chesterian) on the basis of conodonts in USGS colln. 29982-PC (see below). Biofacies indeterminate. CAI=l-1.5 Very latest Mississippian . - (latest ~heiterian). Too few specimens for biofacies analysis, but faunule indicates normal-marine depositional environment. CAT=I .5 REMARKS Representatives of 6. utahensis are more complete than in the collections from the lower unit suggesting considerably less postmortem transport. I Sample is about 1 m below top of exposure and may be uppermost part of Lisburne; about 30 m of cover separates this sample from the top of the measured section. Sample from I I m below top of Lisburne Group. Base of Siksikpuk Formation exposed at this locality. Sample may be equivalent to a level within the highest covered interval (see fig. 3) in measured section 90AD59. Samples with the prefix 85ASi were collected by J.P. Siok, Terrasat Corporation, Anchorage, AK, while he was a graduate student at the University of Alaska Barren. Sample from uppermost part of Lisburne Group, immediately beneath Siksikpuk Formation.
Page 1 and 2: Geologic Studies in Alaska by the U
Page 3 and 4: CONTENTS Introduction Cynthia Dusel
Page 5 and 6: CONTENTS CONTRIBUTORS TO THIS BULLE
Page 7 and 8: GEOLOGIC STUDIES IN ALASKA BY THE U
Page 9 and 10: LATE HOLOCENE LONGITUDINAL AND PARA
Page 19 and 20: DEEP-WATER LITHOFACIES AND CONODONT
Page 25 and 26: Table 1. Locality register for key
Page 27 and 28: Table 1. Locality register for key
Page 37 and 38: LITHOFACIES AND CONODONTS OF CARBON
Page 49: LITHOFACES AND CONODONTS OF CARBONI
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
Page 85 and 86: FAVORABLE AREAS FOR METALLIC MINERA
Page 97 and 98: GOLD AND CINNABAR IN HEAVY-MINERAL
Page 99 and 100: GOLD AND CINNABAR IN HEAVY-MINERAL
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GOLD AND CINNABAR IN HEAVY-MINERAL
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EARLY CENOZOIC DEPOSITIONAL SYSTEMS
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EARLY CENOZOIC DEPOSITIONAL S YSTEM
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RESERVOIR FRAMEWORK ARCHITECTURE, C
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GEOCHEMISTRY OF OPHIOLITIC ROCKS FR
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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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