AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 71-PCL-39

SAMPLE INFO : 71-PCL-39
Sample ID:71-PCL-39
Station ID:71-PCL-39
Latitude:62.4833
Longitude:-143.08528
Datum:NAD83
Date Sampled:1971-00-00
Sample Type 1:Lava
Sample Type 2:Flow
Field Lithology:Basalt
Text Description:
Wrangell Lava. Basalt flows. Dark-gray to greenish-black, vesicular, fine- to medium-grained flows; locally porphyritic. Olivine, pigeonite, and abundant plagioclase (labradorite) occur as phenocrysts and in the groundmass. Locally, vesicles filled with chalcedony and minor calcite and chlorite. Rocks locally chloritized and altered to clay minerals. Individual flows generally thin (<5 m), although entire unit may exceed 100 m in thickness locally. K-Ar date on sample from Wait Creek (sec. 12, T. 6 N., R. 12 E.) yielded age of 13.9 +/- 0.8 m.y. (Deininger, 1972).

References:
Geologic map of the Nabesna B-5 Quadrangle, Alaska

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
71-PCL-3962.4833-143.08528Lowe, P. C.1971-00-00 Nabesna B-5 Quadrangle; latitude and longitude derived from paper map. Wrangell Lava. Basalt flows. Dark-gray to greenish-black, vesicular, fine- to medium-grained flows; locally porphyritic. Olivine, pigeonite, and abundant plagioclase (labradorite) occur as phenocrysts and in the groundmass. Locally, vesicles filled with chalcedony and minor calcite and chlorite. Rocks locally chloritized and altered to clay minerals. Individual flows generally thin (<5 m), although entire unit may exceed 100 m in thickness locally. K-Ar date on sample from Wait Creek (sec. 12, T. 6 N., R. 12 E.) yielded age of 13.9 +/- 0.8 m.y. (Deininger, 1972).71-PCL-39LavaWhole-rock 48 1.7 16.2 9.3 0.15 9.5 7.6 2.8 0.8 0.38 99.64540RAPIDA2.17.3H2OP=2.2; H2OM=1.4; CO2=0.05RAPIDA

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/samples/sample_info.php
Page modified: August 1, 2017 15:29
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.