2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Silicic magmas, uas crystallize ntawm qis kub, tsim pob zeb uas muaj cov ntxhia hauv qab ntawm cov koob. Yog li mafic pob zeb xws li bas alt lossis gabbro feem ntau muaj olivine, pyroxene thiab Ca-nplua nuj plagioclase. Felsic pob zeb xws li rhyolite los yog granite feem ntau nplua nuj nyob rau hauv K-feldspar thiab quartz.
Puas yog bas alt muaj olivine?
Olivine thiab augite yog cov zaub mov porphyritic tshaj plaws hauv bas alts; porphyritic plagioclase feldspars kuj pom.
Dab tsi muaj rhyolite?
Rhyolite yog extrusive sib npaug ntawm granite magma. Nws yog tsim los ntawm quartz, K-feldspar thiab biotite. Nws yuav muaj kev ntxhib los mos los ntawm glassy, aphanitic, porphyritic, thiab los ntawm kev taw qhia ntawm cov muaju me me uas cuam tshuam cov lava ntws.
YPuas yog olivine pom hauv granite?
Olivine feem ntau yog nrog pyroxenes (hauv bas alt, piv txwv li) thiab quartz + K-feldspar nrog micas (biotite thiab muscovite) yog cov muaj pes tsawg leeg ntawm granite. … Olivine yog ib hom pob zeb tsim pob zeb hauv mafic thiab ultramafic igneous pob zeb, tab sis nws kuj tshwm sim nyob rau hauv impure metamorphosed carbonate pob zeb (daim duab hauv qab no).
bas alt feem ntau pom nyob qhov twg?
Nws pom tau thoob plaws ntiaj teb, tab sis tshwj xeeb tshaj yog hauv qab dej hiav txwv thiab nyob rau lwm qhov chaw uas lub ntiaj teb daim tawv nyias nyias. Nws tsim nyob rau hauv thaj av Isle Royale-Keweenaw vim yog Midcontinent Rift. Feem ntau ntawm lub ntiaj tebnto yog bas alt lava, tab sis bas alt tsuas yog ib feem me me ntawm cov teb chaws.
Pom zoo:
Puas muaj ntshav tawm hauv lub kiv puag ncig uas muaj koob meej?
Lub Hwjchim Loj Hlob yog qee zaum hu ua Bloodless Revolution, txawm hais tias cov lus piav qhia no tsis raug kiag li. Thaum muaj kev kub ntxhov me me thiab kev kub ntxhov hauv tebchaws Askiv, kev hloov pauv tau ua rau muaj kev ploj tuag tseem ceeb hauv tebchaws Ireland thiab Scotland.
Puas yog bas alt muaj olivine?
Olivine thiab augite yog cov zaub mov porphyritic tshaj plaws hauv bas alts; porphyritic plagioclase feldspars kuj pom. Puas bas alt muaj olivine? A bas alt yog cov pob zeb zoo-grained igneous pob zeb uas muaj qhov tseem ceeb calcic plagioclase feldspar thiab pyroxene (feem ntau Augite), nrog lossis tsis muaj olivine.
Puas rhyolite txias sai lossis qeeb?
Lub pob zeb tuab tuab uas tsim rhyolite feem ntau txias sai sai thaum lub hnab ntim roj tseem nyob hauv lub lava. rhyolite txias npaum li cas? Extrusive. Rhyolite Porphyry. Cov khoom xyaw: Felsic. Kev ntxhib los mos: Porphyritic. Txias tus nqi:
Cov roj teeb uas ntws tawm puas muaj txiaj ntsig lossis muaj teeb meem?
Thaum cov roj teeb tsis raug pov tseg ntawm lub casing tuaj yeem tawg tau thiab cov tshuaj lom neeg nyob hauv tuaj yeem nkag mus rau ib puag ncig ib puag ncig. Cov khoom xau tuaj yeem ua paug rau hauv av thiab dej thiab qee qhov ntawm cov khoom tuaj yeem sib sau hauv cov tsiaj qus thiab tib neeg.
Rau lub pob zeb uas tsis muaj zog yuav raug cais ua rhyolite?
Ib pob zeb extrusive igneous yog cais raws li rhyolite thaum quartz ua 20% mus rau 60% los ntawm ntim ntawm nws tag nrho cov ntsiab lus ntawm quartz, alkali feldspar, thiab plagioclase (QAPF) thiab alkali. feldspar ua 35% mus rau 90% ntawm tag nrho nws cov ntsiab lus feldspar.
