Amryfaen (daeareg)
From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia
Craig waddod wedi ei ffurfio o ddarnau bychain o gerrig (clastiau) sydd eu smentio gyda'i gilydd yw amryfaen. Ffurfir o fyddodyn gwaddodol sy’n cynnwys mwy na 30% o ddarnau crwn o greigiau sy’n fwy na 2mm mewn diametr.
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| Math | psephite, craig glastig  |
|---|---|
 Ffeiliau perthnasol ar Gomin Wicimedia | |
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