Rock 365 : Day 174 : Lithic Tuff
Day 174 : The Pitts Head Rhyolite, a lithic crystal vitric tuff from unwelded pyroclastic ash flow. From Idwal Cottage, Llyn Ogwen, North Wales. Keele Collection.
Day 174 : The Pitts Head Rhyolite, a lithic crystal vitric tuff from unwelded pyroclastic ash flow. From Idwal Cottage, Llyn Ogwen, North Wales. Keele Collection.
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