Video: Cov pob zeb yooj yim yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Pob zeb yooj yim xws li gabbro, dolerite thiab basaltare tsis zoo nyob rau hauv silica thiab muaj cov minerals olivine, pyroxene, feldspar thiab / los yog quartz ntawm lwm tus; lawv kuj yog nplua nuj nyob rau hauv themetals magnesium thiab hlau thiab feem ntau piav raws li mafic ”. Qhov nruab nrab pob zeb suav nrog microdiorite, andesite.
Ua li no, pob zeb yog dab tsi?
A pob zeb yog ib qho tshwm sim ntawm cov khoom loj oraggregate ntawm cov zaub mov los yog cov teeb meem mineraloid. Nws yog categorized bythe minerals nrog, nws cov tshuaj muaj pes tsawg leeg thiab txoj kev uas nws yog tsim. Pob zeb feem ntau yog muab faib ua peb pawg: igneous pob zeb , metamorphic pob zeb thiab sedimentary pob zeb.
Tsis tas li ntawd, 5 hom pob zeb yog dab tsi? Peb lub ntsiab hom , los yog chav kawm, ntawm pob zeb yog sedimentary, metamorphic, thiab igneous thiab qhov sib txawv ntawm lawv yuav tsum ua li cas lawv raug tsim. Sedimentary pob zeb yog tsim los ntawm cov xuab zeb, plhaub, pebbles, thiab lwm yam khoom tawg.
Dhau li ntawm no, dab tsi pob zeb yog acidic?
Acid pob zeb . Acid pob zeb yog pob zeb uas yog siliceous, muaj cov ntsiab lus siab ntawm silica (SiO2), los yog pob zeb nrog pH tsawg. Ob lub ntsiab lus tsis sib npaug, piv txwv li, nyob rau hauv cov ntaub ntawv ntawm basalt, uas yeej tsis siab pH (basic), tab sis yog tsawg inSiO.2.
Dab tsi ua rau pob zeb mafic?
Feem ntau mafic cov zaub mov muaj xim tsaus, thiab ntau pob zeb - tsim mafic Cov zaub mov muaj xws li olivine, pyroxene, amphibole, thiab biotite. Mafic pob zeb feem ntau kuj muaj calcium uas nplua nuj ntau yam ntawm plagioclase feldspar. Tshuaj, mafic pob zeb yog enriched nyob rau hauv hlau, magnesium thiab calcium thiab feem ntau tsaus nti nyob rau hauv cov xim.
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