Saturday, September 25, 2010

A Divergent Boundary

In plate tectonics, a divergent boundary is a linear feature that exists between two tectonic plates that are moving away from each other. These areas can form on the end of continents but eventually form ocean basins. Divergent boundaries within continents initially produce rifts which produce rift valleys. Therefore, most active divergent plate boundaries are between oceanic plates and are often called mid-oceanic ridges. Divergent boundaries also form volcanic islands which occur when the plates move apart to produce gaps which molten lava rises to fill. Thus creating a shield volcano which would eventually build up to become a volcanic island. Wiki
A Divergent Boundary 2

Iceland, lies on one of the world’s major plate boundaries, the Mid Atlantic Ridge. At this boundary, the earth’s plates are diverging and moving apart. Land to the west of the boundary is moving westwards and land to the east is moving eastwards at a rate of a few centimeters a year.
A Divergent Boundary 3
A Bridge Between Two Continents.
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A Divergent Boundary 6
A Divergent Boundary 7
Another surreal moment on a rainy day; 750 years ago this area was all on fire.

I have seen pictures of the sun shining over Iceland. The rain and wind kind of worked for this trip, helping connect me to the desolation and difficulty of living on this volcanic rock.


P77 said...

I haven't read the text yet but, when did you go to the moon?!

Jil Kobe said...

so cool, I love it!

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