Nws siv sijhawm ntev npaum li cas rau lub pob hluav taws kub cinder cone?
Nws siv sijhawm ntev npaum li cas rau lub pob hluav taws kub cinder cone?

Video: Nws siv sijhawm ntev npaum li cas rau lub pob hluav taws kub cinder cone?

Video: Nws siv sijhawm ntev npaum li cas rau lub pob hluav taws kub cinder cone?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Cinder cone volcanoes me me, feem ntau tsuas yog hais txog 300 feet (91 meters) siab thiab tsis nce siab tshaj 1,200 feet (366 meters). Lawv tuaj yeem tsim nyob rau lub sijhawm luv luv ntawm ob peb lub hlis lossis xyoo.

Ib yam li ntawd, tib neeg nug, cinder cone volcano ua li cas?

Cinder cones yog hom yooj yim tshaj plaws roob hluav taws . Lawv yog tsim los ntawm hais thiab blobs ntawm congealed lava ejected los ntawm ib tug vent. Raws li cov roj-them lava tau tshuab ua rau huab cua hnyav, nws tawg mus rau hauv cov khoom me me uas khov thiab poob zoo li cinders nyob ib ncig ntawm lub qhov cua rau daim ntawv ib ncig los yog oval khob khob.

Ib sab saum toj no, pes tsawg lub cinder cone volcano erupt? Nws yog ib feem ntawm ib pawg ntawm plaub tug hluas cinder cones NWS Las Pilas roob hluav taws . Txij li thaum pib tawg xyoo 1850, nws muaj tawg ntau tshaj 20 lub sij hawm, feem ntau tsis ntev los no nyob rau hauv 1995 thiab 1999. Raws li cov duab satellite nws tau pom tias cinder cones tej zaum yuav tshwm sim rau lwm lub cev hauv av hauv lub hnub ci thiab.

Kuj paub yog, nws siv sijhawm ntev npaum li cas rau lub roob hluav taws tsim?

Volcanoes raug tsim dua kwv yees li 10,000-500,000 xyoo los ntawm ntau txhiab qhov tawg - txhua lub lava ntws npog ib qho ua ntej nws. Nyob rau hauv cov ntaub ntawv ntawm dej hiav txwv kob volcanoes, lava erupts ua ntej los ntawm fissures, los yog tawg, nyob rau hauv lub tob dej hiav txwv pem teb.

Yuav ua li cas txiav txim siab txoj kab nqes ntawm lub cinder cone?

Cinder cones txhim kho los ntawm kev tawg tawg ntawm mafic (hnyav, tsaus ferromagnesian) thiab nruab nrab lavas thiab feem ntau pom nyob rau ntawm cov nplaim hluav taws xob thaiv hluav taws xob. Sab nraum lub khob khob feem ntau inclined ntawm txog 30 °, lub kaum sab xis ntawm repose (the txoj kab nqes ntawm qhov xoob cinder tuaj yeem sawv hauv qhov sib npaug).

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