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n Alas Accompli: ' I.S. GE OLOGI CA
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I CONTENTS Page A bst raet ........
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-- --A I ALASEU i nued rral expluru
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........ igure .JB. ;5~ercn map ox
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. , ".,k a. ,.e ,\a 1 y U11 IIIUUII
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THE UNITED STATES GEOLOGICAL SURVEY
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~ t I r n t S i m ~ ~ Alarr a ~ man
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I -1977, RelImlnary documentat!on l
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I I MaCenn, W. R., Perez, 0. J., an
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were deslgned to impMve the accurac
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Noatak Sandstom and is overlaln con
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I (Nilsen and others, 1981a); (2) f
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I that contains the Upper Devonian
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who found Westeqaardodina sp., posb
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Table 2 lists the means rtnd for th
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' Noatak Vdley (fig. 129. This ice
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3 EUMN OF MAP UNITS WAmWARY OUAERNA
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-om displacement of the cc tween th
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I US I Surlicial dcnrrua,ts [~dater
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I Plafker, George, Hudson, Travis,
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!omlensed iring vapors generated by
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and the thinning. -upward cycles .,
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Kellum, L. B., Devless, S. N., and
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1912 sample (a mediumwey pumice blo
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various Utholagic units present Thu
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fault, and Its depositional basemen
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suggested by coplanar foUaticm and
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1 slgnlficarrtly more umnlum (73&1,
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ecrSigtallized catadastic matrix of
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analyzed to determine whether Immob
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are tgplcd of both ocean-floor basa
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& Fclsic in~rutirt rucks 0 Eio~ite
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are Lrdlcated by coexisting @&ite+q
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(Mg3.09 pe2+ 0.69 pe 0.~1~0.01~~0.9
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westward into a narrow band that ex
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EXF'lANATIOW 66600' Contan-Apprnimn
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! few fold closures are preserved.
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even thickness and conform to irreg
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(Alnus ap.), heaths (Ericaceae, + E
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terrane extends at least 300 krn to
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Table 19.--6tneral petrography of M
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were measured on 8 12-in. mass spec
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Thin lenses of cabonate packtone to
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The cantwell(?) Pormation south of
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in the 18 lava flows b thermoremane
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Upper Cretaceous shale in contact w
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Gran tz, Arthur, 1960, Generalized
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at 15 to 20 percent. Primary Inolus
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addition, this factor generally def
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Joreskog, K. G., Klovan, J. E., and
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Mineral qItWation end r ~ k t k W e
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1 "~_liO-/ 200 1000 B roo C E % A B
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Smaller placer mines ere active on
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Figme 62.-Plant fassils from the co
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Hallam, Anthony, 1975, Alfred Wegen
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u ALASKA Figure 65.--Sketch map of
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F ' i a?.-Intertidal bluffs compose
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C-s - - Figure 70.-Products of eros
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- Page 125 and 126: Bedding in the conglomerate ranges
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- Page 129 and 130: The secona k~~-~ri?tation mmes that
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- Page 133 and 134: 40 40 Forbes, R. B., and Engels, J.
- Page 135 and 136: foliated and inequigranular end con
- Page 137 and 138: I I thy euheclra. Sphene anhedra an
- Page 139 and 140: Quartz Alkali feldspar Plagioclase
- Page 141 and 142: F'@m 85.--Sketch map of Juneau area
- Page 143 and 144: HoUister, L. 8, 1966, Garnet zoning
- Page 145 and 146: ! ~ bI8oO, (IN PERMIL) ~lqp~e 87.-8
- Page 147 and 148: Figure 90.-Offshore ereas discussed
- Page 149 and 150: Preliminerg analpsis of miemfauna f
- Page 151 and 152: Survey tn Alaekai AccompUshments hh
- Page 153 and 154: Gecllogical Survey Open-File Report
- Page 155 and 156: I provenance, and tectonia sIgnific
- Page 157 and 158: Keith, T. E. C, Barnes, Ivan, afrd
- Page 159 and 160: Open-Flle Report 8P811C, 19 p. + 2
- Page 161 and 162: United States Qeological Survey in
- Page 163 and 164: , ,. nldslra poblisbe!d by Prior, D
- Page 165 and 166: 60, Alaska: Offshore Technology Con
- Page 167: Author Index [Page number underscor