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Text Description: 12-cm unit of distinctive tan-brown normally graded, well-sorted tephra fall; fines poor; coarse ash to fine lapilli at top; coarse ash to med lapilli at bottom; one clast at bottom is 3.5cm; combination of tan and brown clasts; pumice?; lithic poor; bigger clasts are med-brn on outside and dk gray on inside References: ![]() |
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