Video: Dab tsi pob zeb tsim thaum lava hardens?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum lava nce mus txog saum npoo ntawm lub ntiaj teb los ntawm volcanoes los yog los ntawm cov fissures loj cov pob zeb uas yog tsim los ntawm lava txias thiab hardening yog hu ua extrusive. igneous pob zeb . Qee yam ntawm ntau hom extrusive igneous pob zeb yog pob zeb lava, cinders, pumice, obsidian, thiab volcanic tshauv thiab hmoov av.
Kuj paub, lub npe ntawm lava yog dab tsi thaum nws hardens?
Magma uas ncav cuag qhov chaw ntawm lub ntiaj teb yog npe lav . Thaum nws txias thiab tawv , nws ib yam nkaus cov pob zeb igneous. Igneous pob zeb uas yog tsim nyob rau hauv lub ntiaj teb nto yog piav raws li extrusive.
Tsis tas li ntawd, hom pob zeb twg tsim thaum cov khoom molten txias thiab hardens hauv ntiaj teb? Igneous pob zeb
Ib yam li ntawd, hom pob zeb twg magma tsim thaum nws tawv?
Igneous Pob Zeb
Dab tsi ntawm pob zeb tsim los ntawm lava?
Cov sub-tsev neeg ntawm pob zeb uas tsim los ntawm volcanic lava yog hu ua igneous volcanic pob zeb (kom sib txawv ntawm lawv igneous pob zeb uas tsim los ntawm magma hauv qab qhov chaw, hu ua igneous plutonic pob zeb). Lub lavas ntawm cov volcanoes sib txawv, thaum txias thiab hardened, txawv ntau nyob rau hauv lawv cov tsos thiab muaj pes tsawg leeg.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov pob zeb tsis foliated thiab foliated metamorphic pob zeb?
Foliated metamorphic pob zeb xws li gneiss, phyllite, schist, thiab slate muaj ib txheej txheej los yog banded zoo li uas yog tsim los ntawm raug tshav kub thiab qhia siab. Non-foliated metamorphic pob zeb xws li hornfels, marble, quartzite, thiab novaculite tsis muaj txheej txheej lossis banded zoo li
Dab tsi yog pob zeb tsim cov ntxhia pob zeb?
Cov pob zeb tsim cov zaub mov yog: feldspars, quartz, amphiboles, micas, olivine, garnet, calcite, pyroxenes. Minerals tshwm sim nyob rau hauv ib lub pob zeb nyob rau hauv me me yog hu ua "accessory minerals"
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
Dab tsi yog cov pob zeb niam txiv ntawm cov pob zeb metamorphic?
Metamorphic pob zeb Metamorphic pob zeb Texture Niam txiv pob zeb Phyllite Foliated Shale Schist Foliated Shale, granite thiab volcanic pob zeb Gneiss Foliated Shale, granite thiab volcanic pob zeb Marble Nonfoliated Limestone, dolostone
Cov pob zeb hauv av twg tuaj yeem tsim cov pob zeb zoo li lub raum?
Hematite (los yog haematite) Kuj tseem muaj ntau hom hematite, qee yam yog: raum ore, ib qho loj, botryoidal (lumpy) lossis reniform (lub raum zoo li tus) daim ntawv; specularite, micaceous (flaky) daim ntawv; oolitic, ib daim ntawv sedimentary tsim los ntawm cov nplej me me; liab ochre, ib daim ntawv liab earthy