Video: Lub pob zeb twg yog sedimentary hauv keeb kwm?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Provenance yog lub reconstruction ntawm lub hauv paus chiv keeb ntawm sediments. Tag nrho cov pob zeb nthuav tawm ntawm lub ntiaj teb saum npoo yog raug rau lub cev lossis tshuaj lom neeg huab cua thiab tawg mus rau hauv finer grained sediment. Tag nrho peb hom pob zeb ( igneous , sedimentary thiab metamorphic pob zeb ) tuaj yeem yog qhov chaw ntawm sedimentary detritus.
Ib yam li ntawd, tib neeg nug, lub pob zeb twg yog sedimentary hauv keeb kwm thiab tsim?
Igneous pob zeb yog tsim los ntawm solidification ntawm cov khoom molten. Sedimentary pob zeb yog tsim los ntawm tsub zuj zuj ntawm fragmental khoom muab tau los ntawm preexisting pob zeb ntawm tej keeb kwm, raws li zoo raws li lub tsub zuj zuj ntawm organic khoom los yog precipitated khoom.
hom pob zeb twg tuaj yeem yog qhov chaw ntawm cov sediments? Kev piav qhia: Cov pob zeb sedimentary yog tsim thaum cov sediments tau tso thiab tom qab ntawd compacted thiab cemented ua ke. Recrystalization yog tus yam ntxwv ntawm cov pob zeb metamorphic. Tshuaj huab cua thiab qhov kev txiav txim ntawm dej tuaj yeem pab tsim thiab tso sediments.
Ib tug kuj nug, qhov twg yog pob zeb sedimentary?
Feem ntau Sedimentary pob zeb : Feem ntau sedimentary pob zeb muaj xws li sandstone, limestone, thiab shale. Cov no pob zeb feem ntau pib li sediments nqa nyob rau hauv cov dej ntws thiab tso rau hauv pas dej thiab dej hiav txwv. Thaum faus, lub sediments poob dej thiab ua cemented los ua pob zeb.
Dab tsi ntawm pob zeb yog ua los ntawm cov khoom.05 cm?
Sedimentary
Pom zoo:
Puas yog pob zeb av nplaum yog pob zeb sedimentary?
Boulder Clay. Boulder av nplaum los ntawm Yorkshire, UK los ntawm lub sij hawm Pleistocene, qhia random loj ntau yam clasts nyob rau hauv ib tug glacial av nplaum matrix. Tsim los ntawm ntau yam txheej txheem glacial lossis dej khov, cov pob zeb sedimentary no muaj ntau qhov ntau thiab tsawg
Yuav ua li cas lub pob zeb sedimentary ua ib lub pob zeb metamorphic?
Sedimentary pob zeb ua metamorphic nyob rau hauv lub pob zeb voj voog thaum lawv raug tshav kub thiab siab los ntawm faus. Cov kub kub yog tsim thaum lub ntiaj teb daim hlau tectonic txav ib ncig, ua kom sov. Thiab thaum lawv sib tsoo, lawv tsim roob thiab metamorphose
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
Cov pob zeb hauv av twg tuaj yeem tsim cov pob zeb zoo li lub raum?
Hematite (los yog haematite) Kuj tseem muaj ntau hom hematite, qee yam yog: raum ore, ib qho loj, botryoidal (lumpy) lossis reniform (lub raum zoo li tus) daim ntawv; specularite, micaceous (flaky) daim ntawv; oolitic, ib daim ntawv sedimentary tsim los ntawm cov nplej me me; liab ochre, ib daim ntawv liab earthy
Lub pob zeb foliated twg yog qhov qis tshaj plaws metamorphic pob zeb?
slate Ua li no, marble puas yog qib qis metamorphic pob zeb? Qee qhov piv txwv ntawm non-foliated Cov pob zeb metamorphic yog marble , quartzite, thiab hornfels. Marble yog metamorphosed limestone. Thaum nws tsim, cov calcite crystals yuav loj hlob tuaj, thiab tej yam sedimentary textures thiab fossils uas muaj tam sim no raug puas tsuaj.