2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Granitic, lossis rhyolitic, magmas thiab andesitic magmas yog tsim ntawm cov phaj sib dhos qhov chaw dej hiav txwv lithosphere oceanic lithosphere Oceanic crust yog kwv yees 6 km (4 mais) tuab. Nws yog tsim los ntawm ob peb txheej, tsis suav nrog cov sediment overlying. https://www.britannica.com › science › dej hiav txwv-crust
Oceanic crust | geology | Britannica
(txheej txheej ntawm lub ntiaj teb tsim los ntawm cov crust thiab sab sauv mantle) yog subducted kom nws ntug nyob rau hauv qab ntawm ntug ntawm lub continental phaj los yog lwm yam dej hiav txwv phaj.
hom magma feem ntau pom ntawm thaj tsam subduction?
Stratovolcanoes zoo li tsim ntawm thaj chaw subduction, lossis cov phaj sib txuas sib txuas, qhov twg cov phaj dej hiav txwv swb hauv qab phaj teb chaws thiab ua rau nce ntawm magma rau saum npoo.
andesitic volcanoes tshwm sim nyob qhov twg?
Andesites tawg ntawm qhov kub ntawm 900 txog 1100 ° C. Qhov tseeb: Lo lus andesite yog muab los ntawm Andes Roob, nyob nyob rau sab hnub poob ntawm South America, qhov twg andesite pob zeb yog common.
Yuav ua li cas andesitic magma tsim?
Andesitic magma yog tsim los ntawm ntub ib nrab melting ntawm lub mantle. Lub mantle nyob rau hauv dej hiav txwv muaj kev sib cuag nrog dej. … Bas altic magma uas muaj cov ntsiab lus dej siab yog qhov tshwm sim. Yog hais tias hom bas altic magma melts nrog continental crust uas muaj siabQhov ntom ntawm dioxide silicon, andesitic magma yuav tsim.
Yuav ua li cas yog magma generated raws subduction zones?
Subduction rog hloov pauv hauv siab thiab kub ua rau magma tiam. … Decompression melting txo qhov kub ntawm tej yam minerals yuav pib yaj yog li tsim ib nrab yaj.
Pom zoo:
Puas yog daim ntawv them nqi lag luam yog daim ntawv xa nyiaj?
Thaum siv rau hauv kev lag luam txawv teb chaws, daim ntawv xa khoom lag luam yog a daim ntawv kev lis kev cai. … Daim ntawv them nqi them nqi feem ntau tsuas muaj lo lus "invoice". Daim ntawv them nqi no kuj tseem siv tau ua daim ntawv xa nyiaj lag luam yog tias nthuav tawm cov ntaub ntawv ntxiv.
Puas yog daim ntawv ntsuam xyuas tib yam li daim ntawv nug?
Daim ntawv nug yog lo lus siv los piav qhia cov lus nug uas koj nug ib tus neeg. Kev tshawb fawb yog tus txheej txheem ntawm kev sau, txheeb xyuas thiab txhais cov ntaub ntawv los ntawm ntau tus neeg. … Ib daim ntawv ntsuam xyuas nkag mus tob dua li daim ntawv nug thiab feem ntau suav nrog ntau dua ib daim ntawv sau cov ntaub ntawv.
Puas yog daim ntawv cog lus yog daim ntawv cog lus siv tau?
Vim a daim ntawv cog lus tsis yog daim ntawv cog lus tseeb, kev lees paub ntawm kev sib nrig tsis tsim nyog, thiab lub tsev hais plaub yuav txiav txim siab yam tsis xav txog lub hom phiaj ntawm ob tog. Thaum ib tog foob rau kev puas tsuaj raws li daim ntawv cog lus, kev kho mob feem ntau yog rov qab los yog rov qab los raws li kev xav ntawm quantum meruit.
Puas yog daim ntawv yuav tsum muaj daim ntawv tso cai?
Cov lus tso cai feem ntau teev cov kev txiav txim siab tias tus neeg hloov pauv yuav them rau thaj av, txawm li cas los xij, qhov no tsis yog qhov tsim nyog ntawm daim deed. Yuav ua li cas cov nqe lus yuav tsum suav nrog rau daim ntawv kom siv tau?
Puas yog andesitic magma daim ntawv?
Andesitic magma yog formed los ntawm ntub ib nrab melting ntawm lub mantle. Lub mantle nyob rau hauv dej hiav txwv muaj kev sib cuag nrog dej. … Bas altic magma uas muaj cov ntsiab lus dej siab yog qhov tshwm sim. Yog hais tias hom bas altic magma melts nrog continental crust uas muaj ib tug siab ceev ntawm dioxide silicon, andesitic magma yuav tsim.