Mafic vs Felsic
Mafic thiab Felsic tsis yog cov lus Askiv zoo. Cov no yog cov ntsiab lus uas siv los ntawm geologists los piav txog cov pob zeb tsis muaj zog raws li lawv cov ntsiab lus silica. Feem ntau ntawm cov pob zeb uas tsis muaj zog tuaj yeem raug faib ua Mafic lossis Felsic. Cov ntsiab lus no kuj tau siv thaum tham txog cov yam ntxwv ntawm lava. Ntau tus tub ntxhais kawm tsis meej pem ntawm ob lub npe Mafic thiab Felsic. Kab lus no sim tshem tawm txhua qhov tsis meej pem ntawm lub siab ntawm cov neeg nyeem txog ob lo lus Mafic thiab Felsic.
Mafic
Mafic yog cov lus luv ua los ntawm Ma uas sawv cev rau Magnesium thiab Fic uas sawv cev rau hlau lossis ferric, Latin lub npe ntawm hlau. Yog li, nws yog qhov tseeb tias cov pob zeb uas tsis muaj zog no yog nplua nuj nyob hauv magnesium thiab hlau. Qhov no yog vim qhov tseeb tias cov zaub mov uas ua rau cov pob zeb tsis zoo no muaj hlau thiab magnesium. Lwm cov yam ntxwv ntawm Mafic pob zeb yog lawv cov xim tsaus thiab muaj qhov ntom ntom. Lub adjective Mafic kuj yog siv rau cov minerals uas tsim cov pob zeb xws li biotite, amphibole, thiab olivine. Cov piv txwv feem ntau ntawm cov pob zeb cais raws li Mafic yog gabbro, dolerite, thiab bas alt. Silica cov ntsiab lus hauv Mafic pob zeb yog nyob ib ncig ntawm 50% los ntawm qhov hnyav. Feem ntau ntawm cov pob zeb no grey tab sis cov pob zeb Mafic kuj pom muaj xim av, ntsuab, thiab xim dub.
Felsic
Felsic yog ib lo lus uas siv los xa mus rau cov pob zeb tsis muaj zog uas nplua nuj nyob hauv cov ntxhia feldspar. Felsic yog ib lo lus uas tau tsim los ntawm cov npe ntawm Feldspar thiab silica. Feldspar yog ib qho ntxhia uas muaj feem pua ntawm silica thiab txhuas. Cov no yog cov pob zeb igneous uas muaj qhov tsawg dua li cov pob zeb mafic thiab tseem muaj xim sib dua. Nws tsis yog silica thiab txhuas xwb, tab sis cov pob zeb no kuj muaj cov pa oxygen, potassium, thiab sodium. Nws yog qhov tseem ceeb ntawm cov khoom sib zog hauv cov pob zeb no uas ua rau lawv qis dua hauv qhov ntom ntom. Granite yog ib qho piv txwv zoo ntawm Felsic pob zeb thiab muscovite, quartz, thiab qee qhov feldspar yog cov piv txwv zoo tshaj ntawm Felsic minerals. Tag nrho cov pob zeb Felsic muaj feem pua ntawm silica. Piv txwv li, granite muaj nyob ib ncig ntawm 70% ntawm silica.
Mafic vs Felsic
• Mafic thiab Felsic yog pawg nyob rau hauv cov pob zeb tsis pom kev raug cais tawm.
• Silica yog cov khoom siv ntau tshaj plaws nyob rau hauv cov pob zeb tsis pom kev. Qhov no yog vim li cas cov ntsiab lus silica tau raug xaiv los faib cov pob zeb tsis zoo nrog cov ntsiab lus silica ntau dua ua pob zeb Felsic thaum cov ntsiab lus silica qis ua rau lawv Mafic. Yog li, pob zeb muaj ntau dua 65% ntawm silica yog Felsic thaum cov uas muaj 45-55% ntawm silica raug cais raws li Mafic pob zeb.
• Mafic pob zeb yog nplua nuj nyob rau hauv hlau thiab magnesium, whereas Felsic pob zeb yog nplua nuj nyob rau hauv silica thiab txhuas.
• Mafic pob zeb yog denser thiab hnyav dua Felsic pob zeb.
• Mafic pob zeb muaj xim tsaus dua li pob zeb Felsic.
• Lava ua los ntawm Felsic pob zeb yog qeeb qeeb thiab muaj viscosity siab dua Mafic lava.
