Puas yog olivine mafic lossis felsic?
Puas yog olivine mafic lossis felsic?

Video: Puas yog olivine mafic lossis felsic?

Video: Puas yog olivine mafic lossis felsic?
Video: Tuag ua Dab los yuav cab kom tau 11/14/2018 2024, Kaum ib hlis
Anonim

Feem ntau mafic minerals yog tsaus xim, thiab ntau pob zeb-forming mafic minerals suav nrog olivine , pyroxene, amphibole, thiab biotite . Nyob rau hauv sib piv cov felsic pob zeb feem ntau yog xim xim thiab nplua nuj nyob hauv txhuas thiab silicon nrog rau cov poov tshuaj thiab sodium.

Cov lus nug tseem yog, yog quartz felsic lossis mafic?

Felsic . Hauv geology, felsic yog ib qho lus piav qhia txog cov pob zeb tsis muaj zog uas muaj cov nplua nuj nyob hauv cov ntsiab lus uas tsim feldspar thiab quartz . Nws yog contrasted nrog mafic pob zeb, uas kuj nplua nuj nyob rau hauv magnesium thiab hlau.

Tsis tas li ntawd, puas yog mantle mafic lossis felsic? Los ntawm kev muaj pes tsawg leeg, lub ntiaj teb tau muab faib ua core, mantle , thiab crust. Los ntawm mechanical zog, lub crust thiab sab sauv mantle muab faib ua lithosphere thiab asthenosphere. Continental crust yog felsic , oceanic crust yog mafic , cov mantle yog ultramafic , thiab lub hauv paus yog metallic.

Ua li no, qhov txawv ntawm felsic thiab mafic yog dab tsi?

Txawm hais tias piav txog pob zeb lossis lava, mafic txhais tau hais tias cov lava lossis pob zeb muaj silica tsawg dua thaum felsic implies tias lava los yog pob zeb muaj silica tshaj plaws. 6. Mafic pob zeb muaj xim tsaus dua felsic pob zeb.

Dab tsi yog qhov txawv ntawm felsic mafic thiab nruab nrab magma?

Mafic thiab felsic yog cov ntsiab lus los piav qhia, ob qho tib si pom thiab tshuaj lom neeg, cov ntsiab lus silica ntawm cov pob zeb tsis pom kev. Ib qho piv txwv ntawm mav mag yuav yog basalt (piv txwv li, Hawaii). Nruab nrab ob tug no yog Nruab nrab pob zeb, uas txhais tau hais txog pob zeb nrog a silica cov ntsiab lus nruab nrab ntawm felsic thiab mafic (i.e. 55% mus rau 65%).

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