Sample: 90ADg-3
Sample ID: | 90ADg-3 [1] | ||||||||||
Station ID: | 90ADg-3 | ||||||||||
AT Num: | |||||||||||
Volcano: | Churchill, Mt | ||||||||||
Possible source: | |||||||||||
Eruption: | |||||||||||
Collector: | McGimsey, R. G. | ||||||||||
Date sampled: | 1990-00-00 | ||||||||||
Sample type 1: | Lava | ||||||||||
Color: | |||||||||||
Final unit: | |||||||||||
Text Description: | Summit lava; Flow-banded dacite that underlies tephra. Pyroxene-bearing, hornblende dacite, mineralogically distinct from the tephra. Plagioclase from the dacite yielded a K/Ar date of 119 +/- 17 ka (N. Shew, written communication, 1991). | ||||||||||
Sample Location: |
![]() ![]() Great Sitkin Spurr Legend ✕
100 km 50 mi |