Dunite tshwm sim hauv txheej txheej, gabbroic igneous complexes (saib gabbro). Tej zaum nws yog tsim los ntawm qhov tsub zuj zuj ntawm ntom, thaum ntxov crystallizing nplej ntawm olivine uas tog rau hauv qab ntawm qis silica magmaKev nkag ntawm dunite daim ntawv sills lossis dikes. Qee lub dunite tau hloov pauv los ua serpentine.
Dunite tsim yooj yim li cas?
Cumulative dunite yog tsim los ntawm feem ntawm olivine los ntawm mafic yajHloov dunite yog cov khoom lag luam ntawm cov tshuaj tiv thaiv ntawm pyroxene-cov kabmob host pob zeb thiab olivine-saturated magma, uas dissolves orthopyroxene hauv tus tswv tsev peridotite thiab qee zaum crystallizes olivine.
Dab tsi ntawm pob zeb yog dunite?
Dunite yog ib qho igneous plutonic pob zeb ntawm ultramafic muaj pes tsawg leeg nrog coarse-grained granular los yog phaneritic kev ntxhib los mos thiab feem ntau loj los yog txheej.
Dunite nyob qhov twg?
Lub dunite los ntawm Dun Roob yog ib feem ntawm qhov chaw ultramfic ntawm Dun Roob Ophiolite Belt. Kev nthuav dav loj ntawm dunite hauv Tebchaws Meskas tuaj yeem pom zoo li Twin Sisters Roob, ze Mount Baker hauv sab qaum teb Cascade ntawm Washington. Hauv Tebchaws Europe nws tshwm sim hauv roob Troodos ntawm Cyprus.
Dunite yog dab tsi?
Dunite, lub teeb yellowish ntsuab, intrusive igneous ultramafic pob zeb uas yog tsim los ntawm yuav luag tag nrho olivine.
