03 ʻO ka ʻili basalt i ʻoki ʻia
Ua kauoha ʻia nā kaula ʻokiʻoki olonā basalt no ka sima e like me ka mea i hoʻoikaika ʻia i ke olonā kila. Ma ke ʻano he ʻano mea hoʻoikaika, hiki iā ia ke hoʻomaikaʻi nui i ka paʻakikī, ke kū'ē ʻana i ka flexure-tension, a me ke coefficient seepage haʻahaʻa o ka sima.