<span>The answer to this question is false. The three kinds of volcanoes that form from lava ash are shield, cindercone and composite, not deposit. A shield volcano is a broad, sloped volcano. An example of this is seen in the Hawaiian islands. A cindercone volcano is a steep conical shaped volcano. An example is seen in the volcano Paricutin, in Mexico. The final volcano is a composite volcano, a large volcano made of multiple layers of solidified lava. An example is seen in Mt. Rainier in Washington State.</span>
The new oceanic crusts are created in the mid-oceanic ridges and the oceanic submarine canyons are those that are enlarged by sedimentary basins and the occurrence of the turbidity of the current leads to the formations of sediment-laden water and that rapidly moves down the continental slopes and has vertical walls.
<u>The continental arcs form in the areas of the continental zones and here the continental crust gets subducted. And in a similar way, the volcanic islands arcs are formed in the oceans.</u>
