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How the Hawaiian Islands were formed:


The Earth’s outer crust is made up of a series of tectonic plates that move very slowly over the surface of the planet. Volcanos can form where these tectonic plates come together.  Volcanos can also form in the middle of a plate on what is known as a "hot spot".  A hot spot of lava pours out onto the ocean floor from time to time causing it to rise over the course of millions of years.  As this continues , the volcano eventually breaks the surface of the ocean to create an island.  Because these islands are in the middle of a tectonic they become anchored to the plate and move with it (about 1 to 2 inches per year).


Hawaii's geological history began about 65 million years ago on one of these hot spots as the oldest island began to form.  The newest island, Hawaii (or "The Big Island") broke the surface of the Pacific Ocean an estimated 50,000 years ago.  It is interesting to note that, as a general rule, the smaller the island the older it is.  That is because the older islands have had far more time to erode.


On the oldest islands in the Hawaiian Island chain the volcanos are essentially dead.  This is because the tectonic plate they are anchored to has moved away from the hot spot that formed them (at an inch or two per year this took millions of years).


Hawaii's newest island in the chain is Hawaii ("the Big Island").  It has two active volcanoes. These volcanoes are from the same hot spot that created the dead volcanoes on older islands. Millions of years from now there may be another island in the chain of Hawaiian islands.  It's also likely some of the smaller islands with dead volcanos will disappear beneath the oceans surface.

.                                                                                                           (Reference:  Live Science,  Wikipedia)

Oahu, Hawaii

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Oahu_03.jpg
Oahu_02.jpg
Oahu_04.jpg
Oahu_05.jpg
Oahu_06.jpg

Oahu 2:  Mountainside from afar.


Camera settings:

Canon EOS 7D

Shutter speed:  1/100

Aperture: f/7.1

ISO: 250


Oahu 3:  Another mountain range formed thousands of years ago as a result of volcanic upheaval.


Camera settings:

Canon EOS 7D

Shutter speed:  1/250.

Aperture: f/9

ISO: 400


Oahu 4:  Another mountain range formed thousands of years ago as a result of volcanic upheaval.


Camera settings:

Canon EOS 7D

Shutter speed:  1/200.

Aperture: f/5.6

ISO: 100


Oahu 5:  A coastal picture from one of the parks


Camera settings:

Canon EOS 7D

Shutter speed:  1/200.

Aperture: f/9

ISO: 100


Oahu 6:  A tree during a hike to one of the mountain trails on the way to a waterfall.


Camera settings:

Canon EOS 7D

Shutter speed:  1/50.

Aperture: f/4.5

ISO: 3200

Oahu_01.jpg

Oahu 1:  Mountainside from afar.


Camera settings:

Canon EOS 7D

Shutter speed: 1/160

Aperture: f/7.1

ISO: 400



Oahu_07.jpg

Oahu 7:  A nice beach picture on the Marine Corp Base.


Camera settings:

Canon EOS 7D

Shutter speed:  1/320.

Aperture: f/10

ISO: 100


Oahu_08.jpg

Oahu 8:  Another coastal area with a small island in the background.


Camera settings:

Canon EOS 7D

Shutter speed:  1/200.

Aperture: f/8

ISO: 100


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Photography By

John Stankovich          

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