June 2015

Extrusive volcanic landforms

By |2017-01-17T11:22:19+02:00June 7th, 2015|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Pico Cão Grande in New Guinea. Image credit imgur.com

Pico Cão Grande in Gulf of Guinea. Image credit imgur.com ZIMSEC O Level Geography Notes: Extrusive volcanic landforms.
  • Magma sometimes reaches earth’s surface through a vent/hole or a fissure/crack in surface rocks.
  • When lava reaches and emerges onto the earth’s surface […]

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Vulcanicity

By |2017-01-17T11:22:23+02:00June 6th, 2015|Landform Studies, Notes, O Level Geography, Ordinary Level Notes|

Violent volcanic eruption. Image by Dailymail.

Violent volcanic eruption. Image via Dailymail. ZIMSEC O Level Geography Notes: Vulcanicity
  • Vulcanicity refers to all the various way by which molten rock and gasses are forced into the earths and onto its surface.
  • It includes volcanic eruptions which lead to the formation of volcanoes, lava plateaus and geysers.
  • It […]

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