2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Andesite yog lub pob zeb grey rau dub volcanic nrog li ntawm 52 thiab 63 qhov hnyav feem pua silica (SiO2). … Andesite magma tseem tuaj yeemua kom muaj zog tawg tawg los ua cov pyroclastic ntws pyroclastic ntws Pyroclastic ntws tuaj yeem ua rau puas tsuaj thiab tuag taus vim lawv qhov kub thiab txias thiab txav mus los. Piv txwv li, thaum lub sij hawm 1902 eruption ntawm Mont Pelee nyob rau hauv Martinique (West Indies), ib tug pyroclastic flow (tseem hu ua "nuee ardente") demolished lub ntug dej hiav txwv nroog ntawm St. Pierre, tua ze li ntawm 30,000 inhabitants.. https://www.usgs.gov › how-dangerous-are-pyroclastic-flows
Pyroclastic ntws txaus ntshai npaum li cas? - USGS
thiab surges thiab loj heev tawg kab. Andesites tawg ntawm qhov kub ntawm 900 txog 1100 ° C.
Yuav ua li cas thaum andesitic magma nce mus txog saum npoo?
Thaum lub magma nce mus txog lub ntiaj teb saum npoo av, cov pa roj npuas yuav tawg yooj yim, cov pa yuav yooj yim nthuav mus rau hauv huab cua siab, thiab qhov tawg tsis tawg yuav tshwm sim, feem ntau yog Lava ntws (Lava yog lub npe peb muab rau magma thaum nws nyob saum lub ntiaj teb).
Vim li cas andesitic magmas thiaj li tawg ntau dua?
Cov tawg tawg tshwm sim qhov chaw txias dua, cov nplaum nplaum ntau dua (xws li andesite) mus txog saum npoo. Cov pa hluav taws xob tawg tsis tuaj yeem khiav tawm tau yooj yim, yog li lub siab tuaj yeem tsim kom txog thaum cov pa tawg tawg tawg pob zeb thiab lava tawg rau saum huab cua! Lava ntws ntau duatuab thiab nplaum yog li tsis txhob ntws downhill li yooj yim.
hom magma twg tawg tshaj?
Cov tawg tawg tau nyiam los ntawm cov ntsiab lus roj ntau & siab viscosity magmas (andesitic rau rhyolitic magmas). Cov npuas tawg tawg tawg ua rau cov magma ua rau cov kua ua kua uas txias thaum lawv poob saum huab cua.
Tus yam ntxwv ntawm andesitic magma yog dab tsi?
Andesitic magma muaj nruab nrab ntawm cov zaub mov no, nrog rau qhov kub ntawm li 800o C txog 1000 oC (1472oF to 1832oF). Rhyolitic magma muaj ntau hauv potassium thiab sodium, tiam sis tsis muaj hlau, magnesium, thiab calcium. Nws tshwm sim hauv qhov kub thiab txias li ntawm 650 o C txog 800oC (1202oF mus 1472oF)..
Pom zoo:
Puas pom qhov tseem ceeb yog vim li cas lossis vim li cas ho tsis?
Kev sib txuas lus pom kev pab cov neeg tuaj saib nkag siab cov ntaub ntawv. Nws ua rau kom nkag siab txog cov ntsiab lus. Hom duab ob sab uas pab kev sib txuas lus muaj xws li kos duab, kos duab kos duab, animation, kos npe, typography, graphic designs, thiab lwm yam.
Vim li cas txoj kev tseem ceeb tseem ceeb rau kev tswj xyuas qhov project?
txoj kev tseem ceeb tso cai rau pab pawg txheeb xyuas cov haujlwm tseem ceeb tshaj plaws hauv qhov project. … Qhov no muab kev nkag siab ntau dua rau koj qhov project ncua sij hawm thiab kev sib raug zoo ntawm cov haujlwm, ua rau koj nkag siab ntau ntxiv txog lub sijhawm ua haujlwm twg koj tuaj yeem hloov kho, thiab qhov twg yuav tsum nyob ib yam.
Vim li cas lub ntsiab lus tseem ceeb yog qhov tseem ceeb?
Grand mean centering sub lub ntsiab lus loj ntawm tus kwv yees siv qhov txhais los ntawm tag nrho cov qauv (X).. Vim li cas Grand txhais tau tias qhov chaw tseem ceeb? Lub ntsiab lus tseem ceeb yog qhov siv tau rov ntsuas duauas pab nrog kev txhais cov ntsiab lus cuam tshuam nrog kev cuam tshuam, nws txhais tau li cas, lossis qhov sib txawv ntawm txhua qib;
Dab tsi yog qhov tseem ceeb thiab vim li cas nws tseem ceeb los txheeb xyuas koj qhov tseem ceeb?
Qhov tseem ceeb yuav coj koj hauv kev txiav txim siab hauv lub neej thiab ua rau koj taug qab. Qhov tseem ceeb tshaj plaws, qhov tseem ceeb tshaj plaws yuav ua rau koj ntseeg siab hais tias "tsis yog." Lawv pab koj txheeb xyuas qhov xav tau tiag tiag hauv koj lub neej, piv rau lwm tus xav tias tseem ceeb.
Vim li cas qhov tseem ceeb ntawm qhov muaj zog thiab qhov tsis muaj zog yog qhov tseem ceeb?
Nws yog ib qho tseem ceeb rau qhov tseem ceeb ntawm qhov ua tau zoo thiab qhov tsis muaj zog vim qhov no pab lub tuam txhab txiav txim siab txog thaj chaw uas lawv yuav tsum tau txhim kho ntxiv rau thaj chaw uas lawv ua tau zoo hauv. Vim li cas lub zog thiab qhov tsis muaj zog tseem ceeb?
