AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 72-ARh-311C

SAMPLE INFO : 72-ARh-311C
Sample ID:72-ARh-311C
Station ID:72-ARh-311C
Latitude:62.0997
Longitude:-143.4767
Datum:NAD83
Date Sampled:1972-00-01
Sample Type 1:Lava
Text Description:
Dacitic andesite agglutinate flow. Extensive single flow unit as much as 60 m thick with well-formed columnar joints and black glassy base. Rocks are gray to black and are mineralogically similar to unit Qdac, but contain very abundant inclusions of both vitric and lithic volcanic debris, apparently derived from a cone now largely destroyed. Near base, flow contains glacial boulders as much as 1 m in diameter. Source cone appears to have been in the Nabesna A-6 quadrangle 2 to 3 km west of the dacite cinder cone (Qdac).

References:
Geologic map of the Nabesna A-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
72-ARh-311C62.0997-143.4767Richter, D. H.1972-00-01 JarvisNabesna A-5 quadrangle; Wrangell Lava; Wrangell Volcanic Field. lat long points derived from paper map. Sample from Jarvis.Dacitic andesite agglutinate flow. Extensive single flow unit as much as 60 m thick with well-formed columnar joints and black glassy base. Rocks are gray to black and are mineralogically similar to unit Qdac, but contain very abundant inclusions of both vitric and lithic volcanic debris, apparently derived from a cone now largely destroyed. Near base, flow contains glacial boulders as much as 1 m in diameter. Source cone appears to have been in the Nabesna A-6 quadrangle 2 to 3 km west of the dacite cinder cone (Qdac).72-ARh-311CLavaWhole-rock 59.6 1.5 16.2 6.8 0.12 2.7 5.7 4.3 2.1 0.44 100.424537RAPIDA2.74.4H2O=0.56RAPIDA

SAMPLE LOCATION

Contact AVO Privacy Accessibility Information Quality FOIA
URL: 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.