Lithic Arenites Feem ntau lithic sandstone yog texturally immature rau submature, tshwm sim hauv koom nrog fluvial conglomerates thiab lwm yam fluvial deposits, los yog koom nrog cov sib sib zog nqus marine conglomerates, shale, cherts, thiab submarine bas alts.
Koj tuaj yeem qhia tau li cas yog pob zeb loj lossis tsis paub?
Ib tug paub tab yog qhov zoo sib xws, rau cov sediment nplej tau zoo sib npaug, yog qhov loj sib xws thiab nthuav tawm me ntsis kev sib txawv. Hloov pauv, ib qho tsis paub qab hau muaj ntau cov nplej angular, ntau qhov ntau thiab tsawg, thiab muaj ntau yam sib txawv.
Dab tsi yog sandstone?
Sandstones tsis paub meej muaj av nplaum matrix, thiab cov xuab zeb loj loj feem ntau yog angular thiab tsis zoo. Qhov no txhais tau hais tias muaj ntau yam ntawm cov xuab zeb loj. Cov xuab zeb zoo li no yog cov yam ntxwv ntawm ib puag ncig uas cov av khib nyiab pov tseg thiab tsis tom qab ntawd ua haujlwm los ntawm…
Yuav ua li cas cov xuab zeb zoo tshaj plaws?
Milky quartz, polycrystalline quartz nplej, thiab quartz nrog undulatory extinction tsis ruaj khov nyob rau hauv ib puag ncig sedimentary dua li monocrystalline non-undulatory quartz. Yog li, sandstone muaj monocrystalline quartz uas tsis qhia undulatory extinctionyog mineralogically tshaj mature.
Puas Sandstone texturally mature?
Cov nplej tuaj yeem suav nrog quartz lossis chert pob zebtawg tawg. Quartz arenites yog texturally mature rau supermature sandstones. Cov ntshiab quartz xuab zeb no tshwm sim los ntawm huab cua dav heev uas tshwm sim ua ntej thiab thaum thauj. Cov huab cua no tshem tawm txhua yam tab sis cov nplej quartz, cov ntxhia ruaj khov tshaj plaws.
