Video: Cov txheej ntawm pob zeb hu ua dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Pob zeb txheej kuj yog hu ua strata (lub plural daim ntawv ntawm lo lus Latin stratum), thiab stratigraphy yog science ntawm strata. Stratigraphy cuam tshuam nrog tag nrho cov yam ntxwv ntawm txheej pob zeb ; nws suav nrog kev kawm txog yuav ua li cas cov no pob zeb cuam tshuam rau lub sijhawm.
Tsis tas li ntawd, cov txheej txheem ntawm pob zeb sib txawv yog dab tsi?
Muaj peb hom pob zeb : igneous, sedimentary, thiab metamorphic. Igneous pob zeb tsim thaum molten pob zeb (magma los yog lava) txias thiab solidifies. Sedimentary pob zeb originate thaum hais tawm ntawm dej los yog huab cua, los yog los ntawm nag lossis daus ntawm minerals los ntawm dej. Lawv sau nyob rau hauv txheej.
Ib yam li ntawd, lub pob zeb qub tshaj plaws hu ua dab tsi? Ib qho ntawm Steno cov ntsiab cai uas hais tias nyob rau hauv ib theem ntawm sedimentary pob zeb txheej , cov txheej qub yog nyob hauv qab thiab tus yau tshaj txheej yog nyob rau saum. Ib thaj tsam ntawm pob zeb ntawm cov hnub nyoog sib txawv heev. Unconformities feem ntau yog cim los ntawm ib tug erosional nto.
Ib yam li ntawd ib tug yuav nug, dab tsi pob zeb txheej txhais tau tias?
a txheej ntawm cov khoom, ib txwm ua los yog artificially tsim, feem ntau tsim ib tug rau lwm tus. 2. txheej ; Qib: ib qho kev hais lus nrog ntau yam strata ntawm lub ntsiab lus . 3. ib lub txaj ntawm sedimentary pob zeb , feem ntau muaj xws li ib yam ntawm cov teeb meem sawv cev mus tas li deposition.
Cov txheej pob zeb ua li cas?
Sedimentary pob zeb yog pob zeb uas yog tsim hauv txheej los ntawm depositing thiab nias ntawm sediments saum toj ntawm txhua lwm yam. Thaum lub sijhawm ntev, txheej thiab txheej ntawm sediments tau tso rau sab saum toj ntawm ib leeg, qhov hnyav ntawm sab saum toj txheej nias rau hauv qab txheej , tsim lawv hauv pob zeb hu ua sedimentary pob zeb.
Pom zoo:
Dab tsi yog qhov txawv ntawm cov pob zeb tsis foliated thiab foliated metamorphic pob zeb?
Foliated metamorphic pob zeb xws li gneiss, phyllite, schist, thiab slate muaj ib txheej txheej los yog banded zoo li uas yog tsim los ntawm raug tshav kub thiab qhia siab. Non-foliated metamorphic pob zeb xws li hornfels, marble, quartzite, thiab novaculite tsis muaj txheej txheej lossis banded zoo li
Dab tsi yog pob zeb tsim cov ntxhia pob zeb?
Cov pob zeb tsim cov zaub mov yog: feldspars, quartz, amphiboles, micas, olivine, garnet, calcite, pyroxenes. Minerals tshwm sim nyob rau hauv ib lub pob zeb nyob rau hauv me me yog hu ua "accessory minerals"
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
Dab tsi yog cov pob zeb niam txiv ntawm cov pob zeb metamorphic?
Metamorphic pob zeb Metamorphic pob zeb Texture Niam txiv pob zeb Phyllite Foliated Shale Schist Foliated Shale, granite thiab volcanic pob zeb Gneiss Foliated Shale, granite thiab volcanic pob zeb Marble Nonfoliated Limestone, dolostone
Dab tsi ntawm pob zeb ua rau ib qho chaw pob zeb?
Sedimentary pob zeb