Yuav ua li cas lava ntws los ntawm lub tshav pob hluav taws xob?
Yuav ua li cas lava ntws los ntawm lub tshav pob hluav taws xob?

Video: Yuav ua li cas lava ntws los ntawm lub tshav pob hluav taws xob?

Video: Yuav ua li cas lava ntws los ntawm lub tshav pob hluav taws xob?
Video: pob txha ntses daig caj pas lawm yuav ua li cas 2024, Kaum ib hlis
Anonim

Shield volcanoes yog tsim los ntawm lava ntws tsawg viscosity - lava uas ntws yooj yim. Yog li ntawd, a roob hluav taws roob uas muaj qhov dav dav yog tsim los ntawm lub sijhawm ntws tom qab ntws ntawm cov kua dej basaltic lava tawm los ntawm vents los yog fissures ntawm qhov chaw ntawm lub roob hluav taws.

Kuj paub, hom lava erupts los ntawm cov ntaub thaiv npog volcanoes?

basalt

Tsis tas li ntawd, cov volcanoes puas muaj pyroclastic ntws? Shield volcanoes muaj me me ntawm pyroclastic cov ntaub ntawv, feem ntau ntawm cov uas accumulates nyob ze lub eruptive vents, tshwm sim los ntawm hluav taws kub fuming xwm txheej. Yog li, tiv thaiv volcanoes Feem ntau yog tsim los ntawm kev tawg tsis tawg ntawm cov viscosity basaltic magma tsawg.

Tsis tas li lo lus nug yog, yog vim li cas lub roob hluav taws kub hnyiab hu ua shield volcano?

A tiv thaiv volcano yog hom roob hluav taws feem ntau yuav luag tag nrho cov kua lava ntws. Nws yog npe rau nws qhov profile qis, zoo li tus tub rog daim ntaub thaiv pw hauv av.

Puas yog cov lava uas tsim cov volcanoes tiv thaiv tej zaum muaj ntau cov silica lossis dej hauv nws?

Piav koj cov lus teb. Silica vim cov lava yog heev khiav, thiab silica ua cov lava dej ntws.

Pom zoo: