Video: Vim li cas cov pob zeb nyob hauv tus dej du?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Abrasion- Pob zeb collide ua rau pob zeb mus nti thiab ua du . tsis kam- cov xuab zeb tsim kev tiv thaiv thiab ua zoo li cov ntawv xuab zeb rau du tus pob zeb . kev txav ntawm cov dej - Kev txav ntawm cov dej thawb lub pob zeb thiab ua rau cov pob zeb sib tsoo nrog cov pob zeb thiab ntws txaj.
Hauv qhov no, vim li cas pob zeb thiab pebbles pom nyob rau hauv tus dej feem ntau yog du?
Cov no pebbles tsim raws li cov dej ntws ntws hla cov pob zeb hauv qab thiab raws ntug dej hiav txwv tus dej . Vim tus dej Tam sim no maj mam dua cov dej hiav txwv, pebbles dej yog feem ntau tsis yog li du raws li puam pebbles.
Ib tug kuj yuav nug, yog vim li cas pob zeb yog puag ncig? Pebbles ua puag ncig , los yog lawv ua polished thiab smoothed vim tsis yog dej xwb tab sis cov nyhuv tumbling, zoo ib yam li cov tumbling uas ua rau polish lub pov haum pob zeb . Tus yam ntxwv ntawm tus pob zeb yuav dictate cov duab ntawm pebble, nrog rau qhov nthuav ntau qhov chaw tau txais qhov feem ntau puas ua ntej.
Tsis tas li ntawd, vim li cas dej thiaj muaj pob zeb?
Kev tsim ntawm dej pob zeb yuav tsum tau txav dej thiab me me pob zeb . Pob zeb yooj yim eroded los ntawm dej ntau dua daim ntawv dej pob zeb . Hom pob zeb nrog jagged npoo tuaj yeem poob rau hauv qab ntawm ib tus dej los yog kwj txaj los yog nyob twj ywm rau ntawm tus dej txhab nyiaj. Qhov ceev ntawm lub tus dej txiav txim siab sai npaum li cas pob zeb ua a dej pob zeb.
Yuav ua li cas lub pob zeb tau du?
Abrasion- Pob zeb collide ua rau pob zeb mus nti thiab ua du . tsis kam- cov xuab zeb tsim kev tiv thaiv thiab ua zoo li cov ntawv xuab zeb rau du tus pob zeb . kev txav ntawm cov dej - Kev txav ntawm cov dej thawb lub pob zeb thiab ua rau cov pob zeb sib tsoo nrog cov pob zeb thiab kwj txaj.
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
Koj puas tuaj yeem muab cov pob zeb tso rau hauv pob zeb tumbler?
Feem ntau hom pob zeb tsis ua haujlwm zoo hauv pob zeb tumbler. Yog tias koj sib tov zoo tumbling ntxhib nrog pob zeb uas qis dua qib qis, cov khoom, cov npoo ntse thiab tawg ntawm cov khoom hauv qab-tumbling-qib tej zaum yuav ua rau cov polish ntawm txhua lub pob zeb hauv lub thoob
Puas muaj cov pob txha pom nyob hauv cov pob zeb sedimentary?
Ntawm peb hom pob zeb loj, fossils feem ntau pom muaj nyob hauv pob zeb sedimentary. Tsis zoo li feem ntau cov pob zeb igneous thiab metamorphic, cov pob zeb sedimentary tsim ntawm qhov kub thiab txias uas tsis rhuav tshem cov pob txha
Dab tsi yog cov pob zeb niam txiv ntawm cov pob zeb metamorphic?
Metamorphic pob zeb Metamorphic pob zeb Texture Niam txiv pob zeb Phyllite Foliated Shale Schist Foliated Shale, granite thiab volcanic pob zeb Gneiss Foliated Shale, granite thiab volcanic pob zeb Marble Nonfoliated Limestone, dolostone
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