Talk:Makauwahi Cave

geological contradiction?
This article states that its subject cave is a limestone cave, although the linked articles state that the whole island is volcanic in origin. What's limestone (sedimentary) doing on a volcano? If true, this needs to be explained; if incorrect, it should be corrected. --Piledhigheranddeeper (talk) 16:26, 8 March 2010 (UTC)
 * My understanding (and I am not a geologist) is that there is no contradiction. Check eolianite and calcarenite.  The 'sedimentary' (largely wind- rather than water-deposited) substrate could have been calcareous coastal dunes, lithified (maybe during lower sea levels in the last, or a previous, ice age) by weakly acidic rainfall.  The cave is right next to the beach, after all. If anybody has a better explanation, please let us know. Maias (talk) 01:08, 9 March 2010 (UTC)

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