Everything For The Detectorist - Reference & Timelines
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More Indepth notes on Metals
Source: Bibliography
Source: Bibliography
Geological Rocks & Minerals
Designed by Nigel G Wilcox
Ref: T4
Non-Commercial Reseach Identification
Non-Commercial Reseach Identification
Non-Commercial Reseach Identification
Tephra
Name: Tephra
Location: Yakima County, Washington **
Date: 1980
Caption: Scanning electron microscope (SEM) image of abraded pumiceous shards and feldspar in tephra from the May 18 eruption of Mount St. Helens. Sample collected in Yakima.
Location: Yakima County, Washington **
Date: 1980
Caption: Scanning electron microscope (SEM) image of abraded pumiceous shards and feldspar in tephra from the May 18 eruption of Mount St. Helens. Sample collected in Yakima.
Photographs Courtesy :USGS Photograph taken by D.R. - ** Public Domain
Copyright © All Rights Reserved by Nigel G Wilcox · · E-Mail: ngwilcox100@gmail.com
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