Cov txheej txheem:
Video: Dab tsi yog cov qauv zoo tshaj plaws hauv cov pob zeb sedimentary?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov qauv sedimentary yog qhov loj dua, feem ntau yog peb-dimensional lub cev nta ntawm cov pob zeb sedimentary; lawv zoo tshaj plaws pom nyob rau hauv outcrop los yog nyob rau hauv loj tes specimens es tsis yog los ntawm ib tug microscope. Cov txheej txheem sedimentary suav nrog cov yam ntxwv zoo li txaj pw, ripple cov cim , fossil lem thiab trails, thiab av nkos tawg.
Kuj nug, dab tsi yog qhov tseem ceeb ntawm cov pob zeb sedimentary?
Sedimentary nta
- txaj. Cov txaj txaj feem ntau yog qhov pom tseeb tshaj plaws ntawm cov pob zeb sedimentary thiab muaj cov kab hu ua cov dav hlau txaj, uas kos cov ciam teb ntawm cov txheej txheem sib txawv.
- Qeb txaj yog qhov tshwm sim thaum cov av xau tau tso los ntawm qhov qeeb qeeb tam sim no.
- Fossils.
- Desiccation tawg thiab ripple marks.
Tsis tas li ntawd, peb lub pob zeb sedimentary yog dab tsi? Peb cov qauv sedimentary uas yog tsim los ntawm cov txheej txheem no yog herringbone cross-stratification , flaser txaj , thiab cuam tshuam ripples.
Tom qab, lo lus nug yog, dab tsi yog tsib yam ntxwv ntawm lub pob zeb sedimentary?
Peb txheeb xyuas cov no sedimentary pob zeb uas tsis yog-clastic. Daim duab 10f-1: Conglomerate. Daim duab 10f-2: Sandstone. Tag nrho sedimentary pob zeb yog lithified rau hauv ib co collective loj.
(f). Cov yam ntxwv ntawm Sedimentary pob zeb
- Qhuav thiab compaction.
- Oxidation ntawm hlau thiab txhuas.
- Kev ywg dej ntawm calcium thiab silica.
Kev faib tawm ntawm cov pob zeb sedimentary yog dab tsi?
Sedimentary pob zeb yog cais raws li qhov lawv tsim thiab qhov loj ntawm qhov sediments , yog tias lawv yog clastic. Clastic sedimentary pob zeb yog tsim los ntawm pob zeb fragments, los yog clasts; tshuaj sedimentary pob zeb precipitate los ntawm cov kua dej; thiab biochemical sedimentary pob zeb tsim raws li nag lossis daus los ntawm cov kab mob nyob.
Pom zoo:
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