Video: Pob zeb txaj yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub txaj yog cov txheej ntawm sedimentary pob zeb uas txawv txawv ntawm overlying thiab hauv qab hauv qab txaj ntawm txawv sedimentary pob zeb . Txheej ntawm txaj hu ua strata. Lawv yog tsim los ntawm sedimentary pob zeb raug tso rau ntawm lub ntiaj teb cov khoom nto nyob rau lub sijhawm ntev.
Ua kom pom qhov no, lub dav hlau txaj pw hauv geology yog dab tsi?
Kev txhais ntawm txaj txaj .: qhov chaw uas cais txhua txheej txheej ntawm cov pob zeb stratified los ntawm nws cov txheej txheem ua ntej: ib qho kev tso nyiaj dav hlau :ib dav hlau ntawm stratification.
Ib tug kuj yuav nug, dab tsi yog sedimentary txaj Vim li cas yuav luag tag nrho cov kab rov tav? Pom cov Strata Sedimentary pob zeb tsim raws li ntau-lossis-tsawg kab rov tav cov khaubncaws sab nraud povtseg vim yog txoj hauv kev uas cov pob zeb, xuab zeb, av nkos, pob zeb khib nyiab, plhaub tawg thiab lwm yam, yog tso. Tag nrho cov sedimentary pob zeb daim ntawv thaum tsiv dej, cua los yog dej khov erodes, thauj thiab deposits sediment.
Ib yam li ntawd, nws raug nug, ua li cas txaj txaj tsim?
Hla- txaj yog tsim los ntawm downstream tsiv teb tsaws ntawm bedforms xws li ripples los yog dunes nyob rau hauv cov dej ntws. Cov dej ntws ua rau cov xuab zeb ua kom ntsev mus rau hauv stoss (sab sauv) sab ntawm lub txaj thiab sau rau ntawm lub ncov kom txog thaum lub kaum sab xis ntawm repose mus txog.
Cov txheej ntawm ib pob zeb yog dab tsi?
Pob zeb txheej tseem hu ua strata (lub plural daim ntawv ntawm Latin lo lus stratum), thiab stratigraphy yog kev tshawb fawb 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.
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