Page 179 - Volcanic Textures A Guide To The Interpretation of Textures In Volcanic Rocks
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3. Stratified pumiceous sandstone and granule
breccia
The top of the section in 41.1 comprises planar and
cross-stratified, pumiceous and crystal-rich coarse
sandstone. Tractional bedforms indicate reworking,
perhaps by residual currents trailing mass flows
and/or by above-wave-base currents.
Shirahama Group, Miocene—Pliocene; Dogashima,
Izu Peninsula, Honshu, Japan.
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