Sample: 05JRSCH015


Sample ID: 05JRSCH015 [1]
Station ID: 05JRSCH015
AT Num:
Volcano: Chiginagak
Possible source:
Eruption: Chiginagak 2005/5
Collector: Schaefer, J. R. G.
Date sampled: 2005-08-23
Sample type 1: Lahar
Color:
Final unit: 2005 lahar
Text Description: 2005 lahar; gray, friable clast rocks and bulk lahar matrix, above 2-3 cm clay base. Lahar deposit is reversely graded with 2-3 cm of clay at bottom and 10-12 cm coarser clay to pebble-sized material on top. Melt water pooling on surface that drains from the deposit has a pH of 3 using both low range pH paper and pH 3-6 range paper.
Sample Location:

References Cited

[1] Geologic map of Mount Chiginagak volcano, Alaska, 2017

Schaefer, J.R., Scott, W.E., and Layer, P.W., 2017, Geologic map of Mount Chiginagak volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2017-10, 32 p., 1 sheet, scale 1:25,000. http://doi.org/10.14509/29769