Cov txheej txheem:
Video: Cov yam ntxwv ntawm peb hom pob zeb yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj peb hom pob zeb : igneous, sedimentary, thiab metamorphic. Igneous pob zeb tsim thaum molten pob zeb (magma los yog lava) txias thiab solidifies. Sedimentary pob zeb originate thaum hais tawm ntawm dej los yog huab cua, los yog los ntawm nag lossis daus ntawm minerals los ntawm dej. Lawv sau nyob rau hauv txheej.
Ib yam li ntawd, tib neeg nug, dab tsi yog yam ntxwv ntawm txhua hom pob zeb?
| Pob zeb hom | Observable yam ntxwv |
|---|---|
| Clastic | Ua los ntawm cov pob zeb me me cemented ua ke. Qee zaum muaj fossils. Feem ntau muaj txheej txheej. |
| Tshuaj | Feem ntau lub teeb grey, qee zaum nrog cov muaju, qee zaum nrog cov plhaub, qee zaum tsuas yog loj. |
| 3. Metamorphic | |
| Feem ntau muaj interlocking crystals thiab txheej (hu ua foliation) |
Tsis tas li ntawd, peb hom pob zeb yog dab tsi thiab lawv tsim li cas? Muaj peb hom loj ntawm pob zeb : Metamorphic, Igneous, thiab Sedimentary. Metamorphic Pob zeb - Metamorphic pob zeb tsim los ntawm qhov kub thiab txias. Lawv feem ntau pom muaj nyob rau hauv lub ntiaj teb lub pob zeb uas muaj cua sov txaus thiab siab ua form tus pob zeb . Qhov no hardened magma los yog lava yog hu ua igneous pob zeb.
Kuj nug, qhov txawv ntawm peb hom pob zeb yog dab tsi?
1. Igneous pob zeb yog tsim thaum magma (los yog molten pob zeb ) tau txias thiab solidified. Sedimentary pob zeb yog tsim los ntawm tsub zuj zuj ntawm lwm yam eroded tshuaj, thaum Metamorphic pob zeb raug tsim thaum pob zeb hloov lawv cov duab qub thiab daim ntawv vim muaj cua sov los yog siab heev.
Dab tsi yog tsib yam ntxwv ntawm pob zeb?
Cov khoom hauv qab no muaj txiaj ntsig zoo rau kev txheeb xyuas lub hom phiaj:
- Hardness.
- Cleavage.
- Luster.
- Xim.
- Streak pob zeb hmoov.
- Kev ntxhib los mos.
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"
Lub npe rau lub pob zeb nruab nrab ntawm cov pob zeb uas txias heev yog dab tsi?
Extrusive igneous pob zeb
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 yam ntxwv dab tsi uas cov kws tshawb fawb siv los faib cov pob zeb?
Feem ntau cov zaub mov tuaj yeem ua tus cwj pwm thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, strrea Feem ntau cov zaub mov tuaj yeem ua tus yam ntxwv thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, streak, tshwj xeeb gravity, cleavage, tawg, thiab tenacity