Hawaii Volcanoes National Park?

hey, i have a few questions on the Hawaii Volcanoes National Park:

1. what is the geologic history of the park? (how did it form, geology-wise)

2. What types of rocks are found here?
(and if its igneous, what kind?)

3. How many volcanoes are in this national park? [not in the island of hawaii, the national park only]

and any interesting facts about it if u want to add it

thanks in advance.

The Hawaiian Islands were formed as a result of “Hot Spots.” Hot spots are fixed places within the mantle or oceanic lithosphere where rocks melt to generate magma.

When a hot spot is situated in the oceanic lithosphere a class of volcanoes known as shield volcanoes is built. These are constructed on the deep ocean floor and may be built high enough to rise above sea level as volcanic islands.

The Hawaiian hot spot, for example, has been active at least 70 million years, producing a volcanic chain of shield volcanoes that extend 3,750 miles 6000 kilometers across the northwest Pacific Ocean.

Hawaii Volcanoes National Park is composed of lava therefore, it is composed of lava rock.

There are 2 main areas of volcanic activity on Kilauea at this time. This park contains two of the most active volcanoes in the world, Mauna Loa which is 4,170 meters high and Kilauea which is 1,250 meters high.

An ash-laden plume rose from the newly formed vent in Halema‘uma‘u Crater as of 03/24/08.

See the links below for additional information. Hope this helps.