Glassy lossis vitreous textures tshwm sim thaum qee qhov volcanic eruptions thaum lub lava quenched sai heev uas crystallization tsis tuaj yeem tshwm sim. Qhov tshwm sim yog lub ntuj amorphous iav nrog ob peb los yog tsis muaj crystals. Piv txwv suav nrog obsidian thiab pumice.
Dab tsi ua rau pob zeb tsis pom kev kom muaj qhov zoo lossis iav zoo nkauj?
Extrusive lossis volcanic pob zeb crystallize los ntawm lava ntawm lub ntiaj teb nto. … Cov lavas txias sai heev, feem ntau cov quenched hauv dej, yuav muaj cov iav zoo nkauj. Lawv txias sai heev los ua cov muaju.
hom pob zeb twg sai sai thiab yuav muaj lub ntsej muag zoo?
Thaum lava tawm ntawm lub roob hluav taws thiab khov rau hauv extrusive igneous pob zeb, tseem hu ua volcanic, lub pob zeb txias sai heev. … Yog hais tias lava txias yuav luag tam sim ntawd, cov pob zeb uas tsim yog iav uas tsis muaj ib tus neeg muaju, zoo li obsidian.
Qhov twg ntawm cov qauv hauv qab no piav qhia txog lub pob zeb uas tsis muaj zog nrog cov siv lead ua tsis zoo?
Qhov twg ntawm cov qauv hauv qab no piav qhia txog lub pob zeb uas tsis muaj zog nrog cov muaju loj loj? Pegmatitic. Dab tsi yog pob zeb igneous nrog pyroclastic kev ntxhib los mos qhia rau tus kws kho mob? Lub pob zeb zoo li tsim los ntawm kev kub ntxhov volcanic eruption.
Npis Sov Tuff nthuav tawm hom ntawv dab tsi?
Lawv ob leeg nthuav tawm vesicular texture. Dab tsi loj, tag nrho igneous feature ua rau Sierra Nevada Roob hauv California?
