Muaj ob yam. Thaum rifting, ncab ua rau nrmal faulting nyob rau hauv lub brittle crust. Kev txav mus los ntawm qhov kev ua txhaum ib txwm ua rau poob qis ntawm cov pob zeb, ua rau cov pob zeb sib sib zog nqus, cov pob zeb uas muaj cov pob zeb sib cais los ntawm nqaim elongate roob ntau yam uas muaj cov pob zeb tilted. Cov kab no qee zaum hu ua fault-block mountatins.
Puas rifting stretching of the crust?
Rifts yog kab kab ntawm thaj chaw thaj chaw txuas ntxiv. … Piv txwv ntawm cov kev sib cais ntawm sab av loj yog thaj tsam Baikal Rift thiab East African Rift.
Dab tsi ua rau cov tawv nqaij tawv tawv?
Lub teb chaws pob zeb thiab lithosphere muaj thaj tsam qaum teb, 20 km tuab, overlying ib txheej tsis muaj zog ntau uas deforms los ntawm cov dej ntws. Yog li crust yuav nyias los ntawm kev nce qib ntawm cov khoom nruab nrab thiab qis crustal mus rau sub-oceanic qaum mantle.
Yuav ua li cas rifting cuam tshuam lub thickness ntawm crust?
Feem ntau muaj qhov inverse correlationntawm sediment thickness thiab tob rau Moho. Piv txwv li, crustal thickness txo nyob rau hauv platform kev nyuaj siab, lub basins ntawm sab hauv thiab marginal seas, thiab nyob rau hauv rifts. Muaj qhov sib txawv ntawm qhov sib txawv ntawm cov tuab tuab thiab cov cua sov ntws.
Yuav ua li cas thaum lub pob zeb sab av loj tau ncab?
Raws li lub lithosphere yog stretched thaum lub sij hawm continental extension, cov ductile tob crust thins los ntawmntshiab shear, thaum lub sab sauv crust yog tawg thiab rub sib nrug los ntawm listric faults uas 'hauv qab tawm' nyob rau hauv lub ductile txheej. Nyob rau saum npoo ntawm chav kawm no muaj cov tsos ntawm graben.
