AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
 
You are here: Home > Samples > 09KCnye011a

SAMPLE INFO : 09KCnye011a
Sample ID:09KCnye011a
Station ID:09KCNYE011
Latitude:52.17437
Longitude:-175.5268
Datum:NAD83
Date Sampled:0000-00-00
Sample Type 1:Pyroclastic Flow
Sample Type 2:Pumice
Text Description:
Luna pyroclastic deposits. White pumice, salmon weathering, in young pre-08 pfs in little fingers and arroyos just N of old cabin site. Can see '08 deposits on top. NO SOIL, must have been peeled off and stripped during eruption, unlike S coast, where turf mat is preserved beneath thin deposits. This unit is predominantly pfs with lithic blocks up to 30 cm, typically 3-5 cm. Sample is from isolated pumice layer (discontinuous over 10's of meters horizontally) ~5-6 cm thick, pmax ~5cm. The bag contains two major lithologies. 09KCnye011a, approx 70% by volume, is 20%k pumice, mostly subrounded (but pMax - 9x7x5cm is subangular) w/ ~20% phenocrysts [1mm plag, 1x2mm cpx>opx>amph]. Vesicles are irregular, gms may be microlitic. Sample of 11a from a few 2-3cm pumices. 09KCnye011b, ~30 vol% is very pale tannish-gray (10% black) and is mostly distinguished by having bulk density <1g/cm3 (it floats). Phenocrysts of plag, px, am somewhat smaller and less abundant than 011a. Vesicles less are round, abundant, and generally 0.5 mm or less. Sample of 011a from several separate pumices.

References:
Geology of Kasatochi volcano, Aleutian Islands, 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
09KCNYE01152.17437-175.5268Nye, C. J.2009-01-01 KasatochiLuna pyroclastic deposits. White pumice, salmon weathering, in young pre-08 pfs in little fingers and arroyos just N of old cabin site. Can see '08 deposits on top. NO SOIL, must have been peeled off and stripped during eruption, unlike S coast, where turf mat is preserved beneath thin deposits. This unit is predominantly pfs with lithic blocks up to 30 cm, typically 3-5 cm. Sample is from isolated pumice layer (discontinuous over 10's of meters horizontally) ~5-6 cm thick, pmax ~5cm. The bag contains two major lithologies. 09KCnye011a, approx 70% by volume, is 20%k pumice, mostly subrounded (but pMax - 9x7x5cm is subangular) w/ ~20% phenocrysts [1mm plag, 1x2mm cpx>opx>amph]. Vesicles are irregular, gms may be microlitic. Sample of 11a from a few 2-3cm pumices. 09KCnye011b, ~30 vol% is very pale tannish-gray (10% black) and is mostly distinguished by having bulk density <1g/cm3 (it floats). Phenocrysts of plag, px, am somewhat smaller and less abundant than 011a. Vesicles less are round, abundant, and generally 0.5 mm or less. Sample of 011a from several separate pumices.09KCnye011aPyroclastic FlowBombWhole-rock 58.92 0.559 18.07 6.87 0.213 2.87 7.21 4.03 1.038 0.218 99.5812761XRF6.87 2.8332 22.5 440.1 463.8 9.174 20.243 2.8534 12.835 3.385 1.1301 3.629 0.6138 3.972 0.8696 2.5088 0.3842 2.4695 0.4082 24 96.9 1.827 2.5799 0.12976 20.564 2.8434 1.6239 12.6 131.7 7.4 6.1 60.8 96.3 18.2 12761ICPMS: Cs, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Nb, Hf, Ta, Pb, Th, U; XRF: Rb, Ba, Sr, Y, Zr, Sc, V, Cr, Ni, Cu, Zn, Ga;

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.