1) Base your question below on the geologic cross section shown below, which shows a view of rock layers at Earth's surface. The dashed lines connected points
of the same age. Major fossils contained within each rock layer are shown. The
valleys are labeled X, Y, and Z. In which type of environment were the sediments
that formed these sedimentary rock layers most likely deposited?
Location 1
Location 2
Location 3
Valley
Valley
Metamorphic basement rocks
O A. Glacial
O B. Mountainous
O C. Marine
O D. Terrestrial Plateau
O E. I don't know

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary