Tholeiitic magma series yog ib qho ntawm ob lub ntsiab magma hauv subalkaline igneous pob zeb, lwm qhov yog calc-alkaline series. Lub magma series yog cov tshuaj sib txawv ntawm cov magma uas piav qhia txog kev hloov pauv ntawm mafic magma mus rau hauv ib qho kev hloov zuj zus ntxiv, silica nplua nuj kawg cov tswv cuab.
pob zeb hom twg yog tholeiite?
Tholeiite, nplua-grained extrusive igneous pob zeb, bas alt uas muaj plagioclase feldspar (labradorite), clinopyroxene (augite nrog pigeonite), thiab hlau ore (magnetite thiab ilmenite). Tholeiitic lavas feem ntau muaj iav, tab sis me me los yog tsis muaj olivine.
Puas yog tholeiitic bas alt mafic?
bas alt kev faib tawmTholeiitic bas altic lavas yog tus cwj pwm los ntawm calcic plagioclase nrog augite, pigeonite lossis hypersthene, thiab olivine (tsis tshua muaj) raws li cov zaub mov tseem ceeb mafic; bas alts tsis muaj olivine kuj sawv cev zoo.
Dab tsi yog qhov txawv ntawm tholeiitic bas alt thiab alkali bas alt?
A tholeiitic bas alt muaj ntau dua pom plagioclase thiab pyroxene crystals. … Ib qho alkali bas alt muaj ntau cov plagioclase thiab pyroxene crystals.
Tholeiitic bas alt tsim li cas?
Tholeiitic bas alts yog cov pob zeb tawg ntau tshaj plaws uas tsim los ntawm submarine volcanism los ntawm tholeiitic magma series, tsim ntau ntawm dej hiav txwv crust thiab mid-oceanic ridges.
