Volcanic
2006-09-14 16:52:29
·
answer #1
·
answered by HoneyB 4
·
0⤊
0⤋
Magma which is molten rock (intensely heated) boiling up through vents and fissures of an active volcano, once this reaches the opening of a volcano, it is then referred to as lava. Once the cooling process takes place of lava, after flowing for several if not hundreds of miles, new land is then created......particularly when reaching the ocean, recreating a new shape and constant change to the Hawaiian islands
2006-09-14 23:59:20
·
answer #2
·
answered by toni l 3
·
0⤊
0⤋
Volcanic is the process. The islands are still growing there are active volcanoes in the Hawaiian islands.
2006-09-14 23:53:41
·
answer #3
·
answered by carmen d 6
·
0⤊
0⤋
The Hawaiian Islands are volcanic in origin. Each island is made up of at least one primary volcano, although many islands are composites of more than one. The Big Island, for instance, is constructed of 5 major volcanoes: Kilauea, Mauna Loa, Mauna Kea, Hualalai and Kohala. Mauna Loa is the largest active volcano on Earth. Kilauea is presently one of the most productive volcanoes on Earth (in terms of how much lava it erupts each year). The primary volcanoes on each of the islands are known as a shield volcanoes, which are gently sloping mountains produced from a large number of generally very fluid lava flows.
Hawaiian volcanoes primarily erupt a type of rock known as basalt. When molten, basalt produces liquids of relatively high fluidity, compared to volcanoes that erupt more silica rich magma types such as andesite, dacite or rhyolite. The fluidity of molten basalt favors the formation of lava flows, which is why the Hawaiian volcanoes generally have gentle sloping sides. By contrast, lavas with higher silica content are more viscous and commonly produce either thicker, shorter lava flows, thick blocky deposits and/or thick beds of ash that fall from the sky following explosive eruptions. These other types of volcanoes (common outside of Hawaii) are typically steeper sided.
The Hawaiian volcanoes were produced by the Hawaiian hot spot, which is presently under the Big Island of Hawaii. The image below shows the islands of the Hawaiian chain and the intervening shallows, banks and reefs along a line from southeast to northwest. Note that the islands of Lanai and Kahoolawe are not shown because they would "overlap" with Molokai and Maui, respectively (see the map of the Islands on the Hawaiian Volcanoes page) In general, when you move along the island chain from southeast (Hawaii) to northwest, (Kure), the volcanoes become older and older.
2006-09-15 00:00:53
·
answer #4
·
answered by freemansfox 4
·
1⤊
0⤋
The islands of the Hawaiian archipelago were formed by a series of volcanic eruptions that began more than 80 million years ago.
2006-09-14 23:58:20
·
answer #5
·
answered by hedychambers 2
·
2⤊
0⤋
Volcano
2006-09-15 00:37:21
·
answer #6
·
answered by Bluffmaster 4
·
0⤊
0⤋
Volcanoes!
2006-09-14 23:52:42
·
answer #7
·
answered by Anonymous
·
0⤊
0⤋
Good question. It was done by Volcanoes that erupted and formed land when it cooled off.
2006-09-15 00:00:01
·
answer #8
·
answered by Pyromaniac 4
·
0⤊
0⤋
Volcanic activity.
2006-09-14 23:59:44
·
answer #9
·
answered by nonexistentdog 3
·
0⤊
0⤋
Active extrusive lava flows.
2006-09-14 23:53:42
·
answer #10
·
answered by Morgana 2
·
0⤊
0⤋