pubs.usgs.gov · MALHA FORMATION--Red-brown to purplish-red rhyolitic to rhyodacitic, less commonly...
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pubs.usgs.gov · MALHA FORMATION--Red-brown to purplish-red rhyolitic to rhyodacitic, less commonly andesitic, well-layered ash-flow tuff; interlayered with minor pebble conglomerate,
