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SAMPLE INFO : FC-109
Sample ID:FC-109
Station ID:FC-109
Latitude:54.672000000889
Longitude:-164.314
Datum:NAD83
Date Sampled:2000-07-18
Sample Type 1:Other
Text Description:
Lava ramps up on the N side of the hill a bit, but no stratigraphy |b| lava and capping maar. Mar has a coarse breccia at base w/ large (8cm) "juvenile" clasts. At top, it is very lapilli rich and also shows cross-bedding. It is possible that maar surge overran this hill (ld cinder cone?) and valley fill is covered by younger lava flow. ??? Maar stuff seems to have 3 layers, 1.5 m fine , laminated, lapilli rich, cross bedded at top, 3.0 m coarser breccia, larger clasts, greyish color, then 1.5 m of coarse basal breccia (tan colored) at base. N/A

References:
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes

SAMPLE LOCATION

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Page modified: July 14, 2014 13:37
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