AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Introduction | Reference Search | Glossary 
You are here: Home > Library > A reconnaissance of the major Holocene tephra deposits in the upper Cook Inlet region, Alaska

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).
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)

2131: Glass compositions and mafic-phenocryst proportions of sampled tephra layers at stations proximal to Iliamna Volcano.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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
View table data :: Download table data (.csv)
* 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
View table data :: Download table data (.csv)
* 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
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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.
View table data :: Download table data (.csv)
* 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. *

SAMPLES
Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/downloads/reference.php
Page modified: February 16, 2017 16:07
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G19AC00060 and G19AC00171.

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.