Tephra redeposition and mixing in a Late‐glacial hillside basin determined by fusion of clustering analyses of glass‐shard geochemistry
Abstract
Two discontinuous tephra layers were discovered at Burney Spring Mountain, northern California. Stratigraphic relationships suggest that they are two distinct primary fall tephras. The geochemistries of these tephras from electron probe microanalysis were compared with those of known layers found in the area to test for potential correlations, using clustering analysis on geochemistry. In most cases, geochemical data from a tephra layer can be assigned to a single cluster, but in some cases the analyses are spread over several clusters. This spreading is a direct result of mixing and reworking of several tephra layers. The mixing, in turn, appears to be related to the influence of wind in a marshy environment.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 01, 2014
- Source ID
- 10.1002/jqs.2752
Entities
People
- Galina Rogova
- Marcus Bursik
- Solène Pouget
Organizations
- Air Force Office of Scientific Research
- National Science Foundation
- Pacific Gas and Electric Company
- University at Buffalo