Go to the following Geotours Folder in Google Earth: 2. Exploring Geology Using

Question

Go to the following Geotours Folder in Google Earth: 2. Exploring Geology Using Google Earth ? Geotour Worksheets ? B. Plate Tectonics. Check the boxes next to “Seafloor Age Map” and “Earthquakes” folders to view the ages of oceanic crust around the world and selected 1986-2005 earthquakes color-coded by depth, respectively. Make the map semi-transparent. Also, in the Layers panel, turn on Borders and Labels and Gallery ? Volcanoes.

Assume that the earthquake depths define the Wadati-Benioff zone for the subducting slab. Compare your answers to Questions 9, 11, and 13 and choose the state that best describes your observations.

subducting slabs much reach a depth of 51-100 km before they produce any volcanic arcs.

subducting slabs much reach a depth of 101-200 km before they produce any volcanic arcs.

subducting slabs much reach a depth of 201-400 km before they produce any volcanic arcs.

volcanic arcs don’t seem to have a systematic relationship with the subducting slab.

subducting slabs much reach a depth of 51-100 km before they produce any volcanic arcs.

subducting slabs much reach a depth of 101-200 km before they produce any volcanic arcs.

subducting slabs much reach a depth of 201-400 km before they produce any volcanic arcs.

volcanic arcs don’t seem to have a systematic relationship with the subducting slab.

Explanation / Answer

Ans:- Subducting slabs must reach a depth of 51-100 km before they produce any volcanic arcs.

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