Sample: Jensen_2008_Chester_Bluff_Geophysical_Institute-P2
| Sample ID: |
Jensen_2008_Chester_Bluff_Geophysical_Institute-P2 [1] [2] |
| Station ID: |
Jensen_2008_Chester_Bluff |
| AT Num: |
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| Volcano: |
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| Possible source: |
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| Eruption: |
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| Collector: |
Jensen, B. J. L. |
| Date sampled: |
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| Sample type 1: |
Tephra Fall |
| Color: |
pink |
| Final unit: |
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| Text Description: |
Only found at Site A of Chester Bluff. The GI tephra is semi-continuous across Site A, forming pink pods up to 10 cm thick and 30 cm long, and reworked with up to 60 cm of vertical relief. GI is rarely associated with an organic-rich silt unit, comprising a reddish-brown organic layer interbedded with calcareous gray silt and woody lenses up to 2 cm thick. More commonly GI is reworked within deep-red loess that may be a weathered horizon (Bw). Low vesicular pumice, bubble-walled and tri-cuspate shards. Contains brown glass. The composition reported was calculated from analyses of six samples: UT1872, UT1871, UT1743, UA1055, UA1056, and UA1077. |
| Sample Location: |
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References Cited
Jensen, B.J.L., Froese, D.L., Preece, S.J., Westgate, J.A., and Stachel, Thomas, 2008, An extensive middle to late Pleistocene tephrochronologic record from east-central Alaska: Quaternary Science Reviews, v. 27, p. 411-427, doi:10.1016/j.quascirev.2007.10.010 .
Jensen, B.J.L., 2007, Tephrochronology of Middle to Late Pleistocene Loess in Eastcentral Alaska: University of Alberta M.S. thesis, 120 p.