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1. Rate of Kilauea - Laysan 2. Rate of Kilauea - Suiko (southern) 3. Rate of Kil

ID: 801660 • Letter: 1

Question

1. Rate of Kilauea - Laysan

2. Rate of Kilauea - Suiko (southern)

3. Rate of Kilauea - Suiko (central)

HOT SPOTS: Hawaiian Islands and Rates of Motion of the Pacific Plate Figure 2.6 is a map of the Hawaiian-Emperor volcanic chain. All of these islands and seamounts are volcanic in origin. In 1963, J. Tuzo Wilson suggested that the Hawaiian Islands were deposited by one continuous flow of magma and lava from below. This would later be termed a hot spot. This idea was subsequently projected onto the Emperor volcanic chain as well. If his proposal is correct, then the volcanoes must be older away from the hot spot where the active volcano, Kilauea, is continuing to erupt. Given the ages of the volcanoes, the rate of the Pacific Plate's motion can be calculated. 5.1 2249 50 3.7 2.8 1.8 1.9 58.6 LANA 1.3 1 KAHOOLAWE 1.3 0.8 1.0 0.43 THE EIGHT PRINCIPAL ISLANOS OF THE HAWARAN ARCHIPELAGO 50 100 150km 56.2 20 0.38 0 Seamount 55.4 Jingu Seamount 0.1 0.01 55.2 Guyot 48.1 159. 19° 0.004 uryaku Seamount 43.4 158 157 158. 155* Midway 27.2 Daikaki Seamount 412.4 Paard & Hermes Reet See 206 Laysan 19.9 Necher 10.3 La Perouse Pinnacla 12.0 Nihau 180 170 160 150 Figure 2.6

Explanation / Answer

Rate of movement = distance /time

1 km /1000000 years=100 cm/1000 years

Distance = 1818 km

= 181.8 cm/19. 9 yr

Rate of Kilauea to laysan =9.13 cm/yr

Suiko south = 479.4 cm/59.6 yr

=8.04 cm/yr

Suiko central =486/64.7

= 7.51cm/yr