Cov txheej txheem:

Dab tsi yog cinder cone volcanoes magma chemistry?
Dab tsi yog cinder cone volcanoes magma chemistry?

Video: Dab tsi yog cinder cone volcanoes magma chemistry?

Video: Dab tsi yog cinder cone volcanoes magma chemistry?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Tshuaj Kev sib xyaw

Feem ntau cinder cones daim ntawv los ntawm eruption ntawm lava ntawm basaltic muaj pes tsawg leeg, txawm tias ib co daim ntawv los ntawm lava. Basaltic magmas crystallize rau cov pob zeb tsaus nti uas muaj cov zaub mov uas muaj hlau, magnesium thiab calcuim tab sis tsawg hauv potassium thiab sodium.

Tib neeg kuj nug, hom lava ntws li cas yog lub roob hluav taws cinder cone?

Cinder cones tsim los ntawm tawg tawg ntawm mafic (hnyav, tsaus ferromagnesian) thiab nruab nrab lavas thiab feem ntau pom nyob rau ntawm cov ntaub thaiv npog roob hluav taws . Sab nraum lub khob khob feem ntau inclined ntawm li 30 °, lub kaum sab xis ntawm repose (qhov nqes hav ntawm qhov xoob cinder tuaj yeem sawv hauv qhov sib npaug).

Tom qab, lo lus nug yog, cinder cone volcanoes puas txaus ntshai? Lava Flow Effects. Qhov tseem ceeb txaus ntshai los ntawm cinder cone volcanoes yog lava ntws. Thaum ib qho ntawm cov gasses tau tso tawm, cov eruptions pib tsim loj ntws los ntawm lava. Cinder cones tuaj yeem ua tau zoo asymmetrical, vim hais tias cov cua ntsawj ntshab tshuab lub tephra ntog rau ib sab ntawm lub khob khob.

Yog li ntawd, dab tsi yog ib co piv txwv ntawm ib tug cinder cone volcano?

Daim ntawv teev cov cinder cones

  • Lava Butte, lub khob hliav qab hauv Newberry National Volcanic Monument, Oregon.
  • Tseax Cone lava txaj npog nrog moss thiab lichen.
  • Kostal Cone.
  • Sab qab teb ntawm Cocoa Crater.
  • Parícutin nyob rau hauv 1994.
  • Amboy Crater, raws li tau pom los ntawm sab hnub tuaj.
  • Schonchin Butte los ntawm Cave Loop Road.
  • Mount Fox crater.

Dab tsi yog qhov viscosity ntawm cinder cone volcano?

Spheroidal thiab spindle-puab foob pob muaj ntau ntawm cinder cones . Tsis zoo li qhov hnyav heev tawg uas tsim loj stratovolcanoes, cinder cones form thaum qis- viscosity lava nrog ntau cov roj erupts, feem ntau raws li cov dej ntws. Lava tej zaum yuav spewed pua pua ntawm cov huab cua.

Pom zoo: