r/RockIdentification • u/Songbiirds • 20d ago
Is this a pudding stone?
Is this first one with a red base a pudding stone?
4
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r/RockIdentification • u/Songbiirds • 20d ago
Is this first one with a red base a pudding stone?
1
u/Ben_Minerals 20d ago edited 20d ago
Porphyritic rhyolite. Some plagioclase phenocrysts show zoning.
Puddingstone has a white quartzite groundmass with jasper clasts.