Video: Clastic pob zeb tsim li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Clastic sedimentary pob zeb tsim cov txheej txheem byweathering uas tawg pob zeb rau hauv pebble, xuab zeb, los yog av nplaum hais los ntawm cua, dej khov, thiab dej. Clastic sedimentary pob zeb muaj npe raws li qhov loj me ntawm cov sediment hais.
Kuj paub, ua li cas cov pob zeb clastic tsim?
Clastic sedimentary pob zeb yog ua nce ntawm daim (clasts) ntawm pre-existed pob zeb . Tej daim pob zeb yog loosened los ntawm huab cua, ces thauj mus rau tej lub pas dej los yog kev nyuaj siab qhov twg sediment yog daig. Yog hais tias cov sediment yog faus tob, nws yuav compacted thiab cemented, formingsedimentary pob zeb.
Kuj Paub, yuav ua li cas sedimentary pob zeb yog tsim los ntawm kauj ruam? Sedimentary pob zeb yog cov khoom ntawm 1) huab cua ntawm preexisting pob zeb , 2) kev thauj cov khoom siv huab cua, 3) kev tso tawm ntawm cov khoom, ua raws li los ntawm 4) compaction, thiab 5) cementation ntawm sediment rau daim ntawv ib pob zeb . Ob tug tom qab cov kauj ruam yog hu ua lithification.
Ua li no, dab tsi pob zeb yog clastic?
Clastic sedimentary pob zeb xws li breccia, conglomerate, sandstone, siltstone, thiab shale yog tsim los ntawm cov khoom siv hluav taws xob huab cua. Chemical sedimentary pob zeb , zoo li pob zeb ntsev, hlau ore, chert, flint, ib co dolomites, thiab ib co limestones, tsim thaum yaj cov ntaub ntawv precipitate los ntawm kev daws.
Clastic pob zeb siv rau dab tsi?
Lub clast yog ib feem ntawm geological detritus, chunks thiab me me nplej ntawm pob zeb tawg ua lwm yam pob zeb byphysical huab cua. Geologists siv lub sij hawm yas withreference rau sedimentary pob zeb as Well as mus hais insediment thauj txawm nyob rau hauv ncua kev kawm ntawv los yog raws li txaj loads, thiab insediment deposits.
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"
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
Yuav ua li cas peb lub npe clastic sedimentary pob zeb?
Clastic sedimentary pob zeb muaj npe raws li cov nplej loj ntawm cov sediment hais. Conglomerate = coarse (64 mm txog > 256 mm), rounded grains. Breccia = ntxhib (2mm txog 64 mm), angular nplej. Sandstone = cov nplej loj li ntawm 2mm txog 1/16 hli. Shale = grains loj li ntawm 1/16 mm mus rau
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