If a layer was deposited but does not appear in the rock record what has occurred? a. erosionb. faultingc. foldingd. eruption

Good afternoon. Your answer will be A - Erosion because it has been eroded away by wind, water, etc and be taken to another location. This will not allow it to be shown in the rock record. Hope this helps!! Have a great day.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.