Extrusive Igneous Rocks: Extrusive, lossis volcanic, igneous pob zeb yog tsim thaum magma tawm thiab txias saum toj (los yog ze heev) lub ntiaj teb nto. Cov no yog cov pob zeb uas tshwm sim ntawm volcanoes erupting thiab oozing fissures.
pob zeb extrusive igneous nyob qhov twg?
Cov pob zeb Extrusive yog tsim ntawm lub ntiaj teb los ntawm lava, uas yog magma uas tau tawm hauv av. Intrusive pob zeb yog tsim los ntawm magma uas txias thiab solidifies nyob rau hauv lub crust ntawm lub ntiaj chaw.
Koj tuaj yeem pom pob zeb tsis pom qhov twg?
Ntawm Igneous Rocks Found. Lub tob hiav txwv (cov dej hiav txwv crust) yog ua los ntawm cov pob zeb bas altic, nrog peridotite hauv qab hauv lub mantle. Bas alts kuj tau tawg nyob rau saum lub ntiaj teb qhov zoo subduction zones, txawm nyob rau hauv volcanic kob arcs los yog raws ntug ntawm continents.
Puas yog piv txwv ntawm extrusive igneous pob zeb?
Extrusive igneous pob zeb tawg rau saum npoo, qhov chaw uas lawv txias sai sai los ua cov pob zeb me me. Qee qhov txias sai sai uas lawv tsim lub iav amorphous. Cov pob zeb no suav nrog: andesite, bas alt, dacite, obsidian, pumice, rhyolite, scoria, thiab tuff.
pob zeb tsis pom kev nyob qhov twg hauv Tebchaws Meskas?
Intrusive Igneous Rock
National parks with excellent example of intrusive igneous rocks muaj xws li: Acadia National Park, Maine [Geodiversity Atlas] [Park Home] Joshua Tree National Park, California [Geodiversity Atlas] [Park Home]
