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2. Pisgah Crater - Wikipedia

   en.wikipedia.org/wiki/Pisgah_Crater

   Lava at nearby and similarly active Amboy Crater is interbedded with Bristol Playa sediments at a depth of about 9 meters (30 feet) which are approximately 100,000 years old. Recent argon-argon dating reveals an age of approximately 18,000 years ± 5,000 years (~90% certainty) for the most recent flow.

3. Volcanic rock - Wikipedia

   en.wikipedia.org/wiki/Volcanic_rock

   The terms lava stone and lava rock are more used by marketers than geologists, who would likely say "volcanic rock" (because lava is a molten liquid and rock is solid). "Lava stone" may describe anything from a friable silicic pumice to solid mafic flow basalt, and is sometimes used to describe rocks that were never lava, but look as if they ...

4. Category:Volcanic rocks - Wikipedia

   en.wikipedia.org/wiki/Category:Volcanic_rocks

   Lava rock buildings and structures (24 P) A. Andesite formations (22 P) ... Pages in category "Volcanic rocks" The following 68 pages are in this category, out of 68 ...

5. Zuni-Bandera volcanic field - Wikipedia

   en.wikipedia.org/wiki/Zuni-Bandera_volcanic_field

   Zuni-Bandera volcanic field (also known as Bandera lava field, Grants Malpais and Malpais volcanic field) is a volcanic field located in the state of New Mexico, United States. [1] The volcanic field has been considered for geothermal exploitation. [2] It is on the Trails of the Ancients Byway, one of the designated New Mexico Scenic Byways. [3]

6. Fire rock - Wikipedia

   en.wikipedia.org/wiki/Fire_rock

   Fire rock is manufactured lava rock that is sold in various shapes and sizes, and is used as a medium for retaining direct heat. Fire rocks are used in natural gas fireplaces or in natural gas or propane burning fire pits. It may be used as the main fuel distributor or as padding for fire glass to go on top.

7. Carbonatite - Wikipedia

   en.wikipedia.org/wiki/Carbonatite

   Carbonatite lava at Ol Doinyo Lengai volcano, Tanzania. Carbonatite (/ k ɑːr ˈ b ɒ n ə ˌ t aɪ t /) is a type of intrusive or extrusive igneous rock defined by mineralogic composition consisting of greater than 50% carbonate minerals. [1] Carbonatites may be confused with marble and may require geochemical verification.