Cov txheej txheem:
Video: Hom pob zeb twg yog tephra?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
pyroclastic pob zeb
Yog li ntawd, dab tsi yog hom tephra?
Kev faib tawm
- Tshauv - cov khoom me dua 2 hli (0.08 nti) inch.
- Lapilli lossis volcanic cinders - nruab nrab ntawm 2 thiab 64 mm (0.08 thiab 2.5 nti) inch.
- Cov foob pob hluav taws kub lossis cov pob zeb hluav taws kub - loj dua 64 hli (2.5 nti) inch.
Tsis tas li ntawd, tephra ua li cas? Kev tawg tawg tsim tawm tshauv. Tag nrho cov tawg volcanic eruptions tsim tephra , fragments ntawm pob zeb uas yog ua thaum magma los yog pob zeb tawg tawg. Qhov loj tshaj plaws fragments, blocks thiab foob pob (> 64 hli, 2.5 nti inch), tuaj yeem raug tshem tawm nrog lub zog loj tab sis muab tso rau ze ntawm lub qhov hluav taws xob tawg.
Ntawm no, hom pob zeb twg yog pyroclastic?
Pyroclastic pob zeb los yog pyroclastics (los ntawm Greek: π?ρ, lub ntsiab lus hluav taws; thiab κλαστός, lub ntsiab lus tawg) yog sedimentary clastic pob zeb tsim ib leeg lossis feem ntau ntawm cov khoom siv hluav taws xob.
Pyroclastic pob zeb nyob qhov twg?
… magma ntawm ntau qhov ntau thiab tsawg ( pyroclastic cov ntaub ntawv), uas feem ntau yog tshuab los ntawm huab cua thiab daim pam lub ntiaj teb nto thaum nyob. Cov coarser pyroclastic Cov ntaub ntawv khaws cia nyob ib ncig ntawm lub roob hluav taws tawg, tab sis qhov zoo tshaj plaws pyroclasts tuaj yeem yog pom raws li nyias txheej nyob pua pua kilometers ntawm qhov qhib.
Pom zoo:
Lub pob zeb twg loj dua pob zeb?
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