Andesite yog pob zeb feem ntau pom nyob rau hauv volcanoes saum toj no convergent phaj ciam teb ntawm continental thiab dej hiav txwv daim hlau.
Koj yuav pom andesitic magma nyob qhov twg?
Granitic, lossis rhyolitic, magmas thiab andesitic magmas yog tsim los ntawm convergent phaj ciam teb qhov twg dej hiav txwv lithosphere (txheej txheej ntawm lub ntiaj teb tsim los ntawm crust thiab sab sauv mantle) yog subducted kom nws cov ntug nyob hauv qab ntawm ntug ntawm daim av av lossis lwm daim ntawv dej hiav txwv.
hom pob zeb twg yog andesite pom hauv?
Andesite feem ntau txhais tau hais tias zoo-grained, feem ntau yog pob zeb porphyritic; Hauv kev sib xyaw ua ke cov no sib raug zoo rauintrusive igneous pob zeb dioritethiab muaj qhov tseem ceeb ntawm andesine (ib plagioclase feldspar) thiab ib lossis ntau cov zaub mov ferromagnesian, xws li pyroxene lossis biotite.
Koj paub cov pob zeb andesite li cas?
ANDESITE yog qhov zoo-grained sib npaug ntawm DIORITE. Nws zoo li yuav tsaus grey dua li rhyolite thiab feem ntau yog porphyritic, nrog pom hornblende. BASALT tshwm sim li nyias mus rau lava loj.
pob zeb andesite siv rau dab tsi?
Nws muaj zog heev, uas tso cai rau nws siv rau hauv txoj kev thiab kev tsheb ciav hlau, thiab ua pob zeb. Cov pob zeb greyish xim pom ntawm txoj kev tsheb ciav hlau feem ntau yog andesite lossis nws cov txheeb ze ze, bas alt. Tej zaum qhov kev nthuav dav tshaj plaws ntawm andesite yog ua pov thawj ntawm volcanic kev ua si ntawm Mars.
