BIO-240 FA5 Chapter 2.1-2.4: Ch. 2.1-2.4 Key Terms
12 Feb 2017
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Asthenosphere - a plastic layer in the upper mantle 80 to 200 kilometers (50 to 124 miles) deep that may allow lateral movement of lithospheric plates and isostatic adjustments. Atoll - a ring-shaped coral reef growing upward from a submerged volcanic peak. It may have low lying islands composed of coral debris. Barrier reef - a coral reef separated from the nearby landmass by open water. Continental arc - an arc-shaped row of active volcanoes produced by subduction that occurs along the convergent active continental margins. Convection cell - a circular-moving loop of matter involved in convective movement. Convergent plate boundary - a lithospheric plate boundary where adjacent plates converge, producing ocean trench-island arc systems, ocean trench-continental arcs, or folded mountain ranges. Coral reef - a calcareous organic reef significantly of solid coral and coral sand. Algae may be responsible for more than half of the caco3 reef material.
