Thaum metamorphism ntawm granite rau hauv gneiss, yuav ua li cas rau cov zaub mov? Lawv sib haum mus rau hauv cov khaubncaws sab nraud povtseg thiab flatten thaum tshav kub thiab siab siv rau lawv.
Yuav ua li cas thaum granite hloov mus ua gneiss?
Thaum granite raug kub hnyiab thiab siab, nws hloov mus rau hauv lub pob zeb metamorphic hu ua gneiss. Slate yog lwm cov pob zeb metamorphic uas tsim los ntawm shale. Limestone, lub pob zeb sedimentary, yuav hloov mus rau hauv cov pob zeb metamorphic yog tias muaj raws li txoj cai.
Dab tsi yog pob zeb hauv granite gneiss thiab sandstone?
Ob leeg gneiss thiab granite yog ua los ntawm feldspars, quartz, mica, thiab me me ntawm cov xim tsaus nti xws li hornblende. Ob qho tib si muaj cov ntxhia sib xyaw ua ke, yog li lawv muaj qhov ntxeem tau tsawg. Ntawm daim ntawv, lawv muaj cov khoom zoo sib xws thiab tuaj yeem siv tib yam.
Yuav ua li cas cov zaub mov muaj nyob hauv gneiss?
Gneiss yog ib qho ntxhib rau nruab nrab grained banded metamorphic pob zeb tsim los ntawm cov pob zeb tsis zoo los yog cov pob zeb sedimentary thaum lub sij hawm hauv cheeb tsam metamorphism. Cov nplua nuj nyob rau hauv feldspars thiab quartz, gneisses kuj muaj mica minerals thiab aluminous los yog ferromagnesian silicates.
Dab tsi yog granite tom qab metamorphism?
Gneisses uas yog metamorphosed igneous pob zeb lossis lawv qhov sib npaug yog hu ua granite gneisses, diorite gneisses, thiab lwm yam. Gneiss pob zeb kuj yuav yogmuaj npe tom qab cov yam ntxwv xws li garnet gneiss, biotite gneiss, albite gneiss, thiab lwm yam.
