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Ke kūkulu ʻana i ka pōhaku ʻulaʻula no ka pā pōhaku waho
He pōhaku sedimentary maʻamau ka pōhaku ʻulaʻula i loaʻa kona inoa ma muli o kona waihoʻoluʻu ʻulaʻula. Hoʻokumu nui ʻia ia me ka quartz, feldspar a me nā mea hao hao, nā minelala e hāʻawi i ka pōhaku ʻulaʻula i kona kala a me ke ʻano. Hiki ke ʻike ʻia ka pōhaku ʻulaʻula ma nā ʻāpana like ʻole o ka ʻōpala o ka honua a loaʻa ma nā wahi he nui a puni ka honua.
