Banding nyob rau hauv metamorphic pob zeb uas tshwm sim los ntawm reorientation ntawm minerals. Yuav ua li cas foliation nyob rau hauv continental metamorphic pob zeb tsim thaum lub sij hawm subduction yuav oriented? Perpendicular rau kev taw qhia ntawm phaj txav.
foliation tshwm sim hauv cov pob zeb metamorphic li cas?
Foliated Metamorphic Pob Zeb:
Foliation forms thaum lub siab nyem lub tiaj tus lossis elongate cov ntxhia hauv pob zeb kom lawv ua raws li. Cov pob zeb no tsim cov platy lossis daim ntawv zoo li cov qauv uas qhia txog cov kev taw qhia uas siv lub siab.
Yuav ua li cas hom metamorphism tshwm sim rau cov pob zeb sab av loj?
Regional metamorphism yog hais txog qhov loj-scale metamorphism, xws li tshwm sim rau sab av loj crust raws convergent tectonic margins (qhov twg daim hlau sib tsoo). Cov kev sib tsoo ua rau tsim cov roob ntev, zoo li cov nyob ntawm ntug dej hiav txwv sab hnub poob ntawm North America.
foliation qhia koj li cas hauv pob zeb metamorphic?
Cov foliation, feem ntau zoo li cov dav hlau uas muaj cov ntxhia hloov pauv, feem ntau tuaj yeem qhia kev taw qhia ntawm kev nce ntxiv thiab qhia txog kev ntxhov siab hauv cheeb tsam thiab phaj tectonic tsom xamCov hom minerals tam sim no tuaj yeem qhia qhov sib txawv ntawm qhov kub thiab txias.
Puas cov pob zeb hauv cheeb tsam metamorphic muaj foliation?
Feem ntau cov foliated metamorphic pob zeb-slate, phyllite, schist, thiab gneiss-yog tsim thaum lub sijhawm metamorphism hauv cheeb tsamRaws li cov pob zeb ua kom sov hauv qhov tob hauv lub ntiaj teb thaum lub sijhawm metamorphism hauv cheeb tsam lawv ua ductile, uas txhais tau tias lawv kuj yog mos txawm tias lawv tseem khov.
