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 muaj xws li: andesite, bas alt, dacite, obsidian, pumice, rhyolite, scoria, thiab tuff.
Pumice puas yog pob zeb intrusive lossis extrusive?
Thaum lava nce mus txog qhov chaw ntawm lub ntiaj teb dhau los ntawm cov hluav taws kub los yog dhau los ntawm qhov tawg loj heev cov pob zeb uas tsim los ntawm lava txias thiab tawv tawv yog hu ua extrusive igneous pob zeb. Qee yam ntawm ntau hom pob zeb extrusive igneous yog lava pob zeb, cinders, pumice, obsidian, thiab volcanic tshauv thiab hmoov av.
pob zeb dab tsi yog pumice?
Pumice yog pyroclastic igneous pob zeb uas yog yuav luag tag nrho cov kua thaum lub sij hawm effusion thiab tau txias sai heev uas tsis muaj sij hawm rau nws crystallize. Thaum nws solidified, cov vapors yaj nyob rau hauv nws mam li nco dheev tso tawm, tag nrho cov loj o tuaj mus rau hauv ib tug froth uas tam sim ntawd consolidated.
Puas yog intrusive lossis extrusive?
Extrusive pob zeb yog tsim nyob rau saum npoo 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 qhia tau li cas yog tias pob zeb tsis pom kev nkag mus los yog extrusive?
Summary
- Intrusive igneous pob zeb txias los ntawm magma maj mam nyob rau hauv lub crust. Lawvmuaj crystals loj.
- Extrusive igneous pob zeb txias los ntawm lava sai sai ntawm qhov chaw. Lawv muaj me me crystals.
- Texture reflects li cas lub pob zeb igneous tsim.
