Dab tsi ntawm lava ntws tawm ntawm dej hiav txwv volcanoes?
Dab tsi ntawm lava ntws tawm ntawm dej hiav txwv volcanoes?

Video: Dab tsi ntawm lava ntws tawm ntawm dej hiav txwv volcanoes?

Video: Dab tsi ntawm lava ntws tawm ntawm dej hiav txwv volcanoes?
Video: Kho caj kho cev by Celesna Lor 2024, Kaum ib hlis
Anonim

Lava erupting nyob rau hauv lub tob hiav txwv pem teb muaj ib daim ntawv zoo li pahoehoe ntws . Peb hom ntawm lava ntws muaj ntau nyob rau hauv hiav txwv pem teb: hauv ncoo lava , lobate lava , thiab daim ntawv lava . Raws li lava erupts ntawm dej hiav txwv pem teb, nws sab nrauv txias thiab solidifies tam sim ntawd.

Ib yam li ntawd, 4 hom lava yog dab tsi?

Txoj kev sib faib feem ntau lava ntws mus rau hauv qhov sib txawv hom yog li no: Pahoehoe lava flow, aw lava flow, Blocky lava flow, thiab Pillow lava ntws.

Ib yam li ntawd, puas muaj lava hauv dej hiav txwv? Cov kws tshawb fawb ntseeg tias 80 feem pua ntawm cov volcanic eruptions nyob rau hauv lub ntiaj teb no tshwm sim nyob rau hauv lub dej hiav txwv . Cov kws tshawb fawb kuj pom cov molten lava ntws hla qhov tob- dej hiav txwv pem teb thiab pom cw nyob ze ntawm lub roob hluav taws uas muaj zog tshaj plaws.

Ib yam li ntawd, nws raug nug, hom lava tau tawg ntawm nruab nrab dej hiav txwv ridges?

Cov lava ua nyob rau hauv cov chaw sib kis yog basalt, thiab feem ntau yog abbreviated MORB (rau Nruab nrab - Dej hiav txwv Ridge Basalt). MORB yog nyob deb ntawm cov pob zeb ntau tshaj plaws hom nyob rau hauv lub ntiaj teb nto, raws li tag nrho dej hiav txwv pem teb muaj nws.

Yam dab tsi ntawm lava ntws tawm hauv qab dej?

Lava tawg nyob rau hauv lub hiav txwv tob muaj ib daim ntawv zoo li pahoehoe ntws . Peb hom lava ntws muaj nyob rau hauv hiav txwv pem teb: hauv ncoo lava , lobate lava , thiab daim ntawv lava.

Pom zoo: