which of the following is not supported by the plate tectonic theory? A. Continents move through the seafloor crust B. Locations of volcanoes and earthquakes can be explained. C. Seafloor spreading provides evidence to support the plate tectonic theory. D. there are 3 different types of plate boundaries associated with the direction of plate movement.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.