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A RECONNAISSANCE OF THE MAJOR HOLOCENE TEPHRA DEPOSITS IN THE UPPER COOK INLET REGION, ALASKA
citation imageRiehle, J. R., 1985, A reconnaissance of the major Holocene tephra deposits in the upper Cook Inlet region, Alaska: Journal of Volcanology and Geothermal Research, v. 26, n. 1-2, p. 37-74.

DATA TABLES *Not all tables in a publication may be listed. Not all tables from a publication have data entered in the database.
2081: Summary of historic eruptive activity in the Cook Inlet region of south-central Alaska.
* Owing to a sparse papulation, possible eruptions prior to 1883 are poorly documented and are not included here. See Coats (1950) for a summary of evidence for possible activity prior to 1883. *
2091: Glass compositions and mafic-phenocrysts contents of reference tephra samples from Hayes volcano (site 23).
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* The samples are arranged in stratigraphic order with the youngest at the top of the table. The major oxides in glass separates are given in weight percents: one standard deviation in weight percent is below each oxide concentration. Samples with numbers in parentheses are heterogeneous and the analyses may not accurately reflect a magmatic composition. Proportions of clinopyroxene, orthoyroxene, and amphibole are included as cp/op/am and the presence of te accessory minerals biotite (bi) and olivine (ol) is noted in parentheses. The petrographic nature of the analyzed subsamples in given in footnotes. *
2101: Glass Compositions and mafic-phenocryst proportions of reference tephra samples and pyroclastic flow samples from Spurr Volcano.
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* For a complete explanation see catpion for table 2 *
2111: Glass compositions and mafic-phenocryst contents of refrence tephra samples of Redoubt Volcano from site 8.
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* For a complete explanation see catpion for table 2 *
2121: Glass compositions and mafic-phenocryst contents of reference tephra samples of Redoubt Volcano from site 5.
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2131: Glass compositions and mafic-phenocryst proportions of sampled tephra layers at stations proximal to Iliamna Volcano.
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* For a complete explanation see catpion for table 2 *
2141: Mafic-phenocryst proportions and similarity coefficients of glass separates for tephra samples assigned to Hayes volcano.

2151: Tephra samples which are approximately similar in composition to pumice lapillus in the Spurr pyroclastic-flow deposits.
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* Glass compositions and mafic-phenocrysts contents of distal samples assigned to Spurr volcano. For a complete explanation see catpion for table 2 *
2161: Tephra samples assigned to Crater Peak vent.
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* Glass compositions and mafic-phenocrysts contents of distal samples assigned to Spurr volcano. For a complete explanation see catpion for table 2. *
2171: 5200-yr samples provisionally correlated with one another and assigned to Spurr volcano.
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* Glass compositions and mafic-phenocrysts contents of distal samples assigned to Spurr volcano. For brevity, the glass composition is given only for sample 30-D, followed by its similarity coefficients with the other samples. For a complete explanation see catpion for table 2 *
2181: Similarity coefficients >0.92 among early Holocene deposits at sites 7, 8, 9, and 10.
* Glass compositions, mafic-phenocryst contents, and similarity coefficients of distal tephra samples provisionally assigned to Redoubt volcano. See table 2 caption for an explanation. For brevity, similarity coefficients are presented in lieu of individual analyses. Glass compositions of samples from site 8 are in Table 3. The most likely correlations as the same layer, based on both mafic minerals and similarity coefficients, are underlined. Less likely correlations are indicated by asterick; least likely correlations have no designation. *
2191: Samples 13-J and 11-H
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* Glass compositions, mafic-phenocryst contents, and similarity coefficients of distal tephra samples provisionally assigned to Redoubt volcano. See table 2 caption for an explanation *
2201: Samples 11-A and 21-I
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* Glass compositions, mafic-phenocryst contents, and similarity coefficients of distal tephra samples provisionally assigned to Redoubt volcano. See table 2 caption for an explanation *
2211: Samples 14-K and 11-M
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* Glass compositions, mafic-phenocryst contents, and similarity coefficients of distal tephra samples provisionally assigned to Redoubt volcano. See table 2 caption for an explanation *
2221: Samples approximately 1000 yr old which are provisionally assigned to Hayes volcano.
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* Glass compositions and mafic-phenocryst contents of provisionally correlated samples comprising regional layers of uncertain origin. For explanation, see the caption for Table 2. Only the glass of sample 27-A was chemically analyzed; thus, corretlation of the samples based on their phenocryst contentsand on their similar approximate ages. *
2231: Samples approximately 4000 yr old.
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* Glass compositions and mafic-phenocryst contents of provisionally correlated samples comprising regional layers of uncertain origin. For explanation, see the caption for Table 2. Only the glass composition of sample 13-D is given, followed by similarity coefficients among the 4 samples. *
2241: Samples approximately 6000 yr old.
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* Glass compositions and mafic-phenocryst contents of provisionally correlated samples comprising regional layers of uncertain origin. For explanation, see the caption for Table 2. Glass compositions of samples 8-W and 8-X, 2 closely succeeding layers which marginally comprise a set, are followed by similarity coefficients among the 5 samples. *
2251: Details of radiocarbon samples.
* The numbers at left (1 through 22) are the same as the encircled numbers on the measured sections shown in preceeding illustrations. *

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