Video: Dab tsi yog xim sandstone?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Feem ntau sandstone yog tsim los ntawm quartz thiab / los yog feldspar vim hais tias cov no yog cov minerals ntau tshaj plaws nyob rau hauv lub ntiaj teb crust. Zoo li xuab zeb, sandstone tej zaum yuav muaj xim, tab sis cov xim feem ntau yog tan liab, daj, liab , grey thiab dawb.
Tom qab ntawd, dab tsi xim mus nrog sandstone?
Ua rau koj xuab zeb sawv tawm tsam qhov nruab nrab ntxoov ntxoo, siv tonal contrast los teeb nws tawm tsam tom qab tsaus nti lossis sib dua. Piv txwv li, phim lub teeb kub los yog tan xuab zeb nrog ib tug sib sib zog nqus xim av xim . Pair mos beige los yog sov, lub teeb grey nrog tsaus liab xuab zeb.
Tom qab ntawd, lo lus nug yog, ua li cas koj txheeb xyuas sandstone? Sandstone . Sandstones yog ua los ntawm cov xuab zeb nplej uas tau muab cemented ua ke. Zoo li ntawv xuab zeb, xuab zeb feem ntau muaj ntxhib, granular zoo nkauj, tab sis tiag tiag txheeb xyuas ib xuab zeb koj yuav tsum ua tib zoo saib ntawm nws qhov chaw thiab nrhiav cov xuab zeb ib leeg.
Ib tug kuj yuav nug, seb cov xim sandstone zoo li cas?
Sandstone yog ib lub pob zeb clastic sedimentary muaj feem ntau ntawm cov xuab zeb loj (0.0625 mus rau 2 hli) cov ntxhia los yog cov pob zeb tawg. Zoo li uncemented xuab zeb, xuab zeb muaj ua ib yam xim vim impurities nyob rau hauv cov zaub mov, tab sis feem ntau xim yog tan, xim av, daj, liab, grey, liab, dawb, thiab dub.
Sandstone tsim li cas?
Sandstone yog pob zeb uas muaj feem ntau ntawm cov zaub mov tsim los ntawm xuab zeb. Lub pob zeb nce nws tsim thoob plaws ib puas xyoo ntawm deposits tsim nyob rau hauv pas dej, dej ntws, los yog nyob rau hauv dej hiav txwv pem teb. Cov ntsiab lus no ua ke nrog cov zaub mov quartz lossis calcite thiab compresses.
Pom zoo:
Dab tsi yog crossbeded sandstone?
Tabular ntoo khaub lig-pob txaj yog tsim los ntawm kev tsiv teb tsaws ntawm cov nplai loj, ncaj-crested ripples thiab dunes. Hla-txheej txheej tshwm sim feem ntau nyob rau hauv granular sediments, tshwj xeeb tshaj yog sandstone, thiab qhia tau hais tias sediments tau deposited raws li ripples los yog dunes, uas siab heev vim muaj dej los yog cua tam sim no
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