basalt – Irreverent Outcrop https://irreverentoutcrop.com Travel stories with mild geo-flavor Thu, 23 Oct 2025 01:12:24 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.1 https://irreverentoutcrop.com/wp-content/uploads/2024/06/cropped-logo-temp-01-1-2-32x32.png basalt – Irreverent Outcrop https://irreverentoutcrop.com 32 32 Nā Pali, Lehua Tuff Cone, and the “Forbidden Island” of Ni‘ihau https://irreverentoutcrop.com/na-pali-lehua-niihau/ https://irreverentoutcrop.com/na-pali-lehua-niihau/#respond Thu, 20 Mar 2025 02:22:56 +0000 https://irreverentoutcrop.com/?p=1190 Read more]]> During our March 2025 trip to Kaua‘i, Hawaii, one unforgettable day stood out: we spent seven hours soaking in the breathtaking vistas of the Nā Pali sea cliffs, the volcanic Lehua tuff cone, and the remote shores of Ni‘ihau – often called the “Forbidden Island”. Magma from the Hawaiian mantle plume hotspot has continuously erupted over the past several million years…

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]]> https://irreverentoutcrop.com/na-pali-lehua-niihau/feed/ 0 Volcano (part 1): shield volcanoes https://irreverentoutcrop.com/volcano-part-1-shield-volcanoes/ https://irreverentoutcrop.com/volcano-part-1-shield-volcanoes/#respond Sun, 04 Aug 2024 04:05:06 +0000 https://irreverentoutcrop.com/?p=703 Read more]]> Shield volcanoes and stratovolcanoes are two major types of volcanoes. Other smaller-scale volcanic features also include cinder cones, volcanic domes, calderas etc. To put it simply, low-viscosity magma flows gently outward instead of erupts violently, resulting in shield volcanoes with gentle slopes. In contrast, stratovolcanoes form from viscous magma that often erupts violently and couldn’t…

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]]> https://irreverentoutcrop.com/volcano-part-1-shield-volcanoes/feed/ 0 Micronesia (part 1): secluded stones- basalt columns, latte, and rai https://irreverentoutcrop.com/micronesia-part-1-secluded-stones-basalt-columns-latte-and-rai/ https://irreverentoutcrop.com/micronesia-part-1-secluded-stones-basalt-columns-latte-and-rai/#comments Sun, 30 Jun 2024 08:08:23 +0000 https://irreverentoutcrop.com/?p=186 Read more]]> I took a trip to Micronesia – a group of isolated “small islands” – in early 2024, where the diverse volcanic landscapes on their high islands not only shape magnificent natural scenery but also foster an impressive local culture. There are three subregions- both geographical and cultural- in Oceania: Melanesia, Polynesia, and Micronesia. Translated from Greek, they etymologically mean “black…

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