Explanation of the formation of hotspots

HideShow resource information
Preview of Hotspots

First 171 words of the document:

Rosalyn Pearson 3 February 2010 Geography
Hotspots are small areas in the Earth's lithosphere (crust) through which
magma rises. Hotspots are not found on plate boundaries but in areas
unconnected to
plate tectonics.
The world's
hotspots are
shown on the map
to the left.
The hotspot
theory was first
considered in
1963 by a
named J. Tuzo
Wilson who attempted to explain why some volcanic and earthquake activity
occurred far from plate boundaries. He thought that these phenomena were
caused by the slow movement of a plate across a hotspot below the crust.
Hotspots are said to be caused by a plume of hot mantle rising from the
boundary between the core and the mantle. There are said to be about 45
hotspots around the globe. Some of the most famous hotspots are in Hawaii
and Yellowstone.

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Rosalyn Pearson 3 February 2010 Geography
The volcanic activity in the Hawaii hotspot is responsible for the creation of
the Hawaiian Islands. This hotspot can be found in the central Pacific Ocean.
Volcanoes on the Hawaiian Islands travel approximately 10cm northwest each
year. This is because of the expansion of the
ocean floor due to the mid-ocean ridge located in
close proximity to the islands. Volcanic activity on
Hawaii is so abundant that many of the volcanoes
bubble out a constant stream of lava.…read more


No comments have yet been made

Similar Geography resources:

See all Geography resources »See all resources »