2. Match These Terms Spreading Ridge/Mid-Ocean Ridge Trench Continental Shelf Sea mounts/Guyots Volcano Continental Slope Abyssal Plain
3.
4. Layers of OCEANIC CRUST (up to 4 miles thick) Sediments - bodies of sea creatures (source of carbon) and sediments from landmasses Pillow Basalts - lava, cooled and hardened, from volcanic vents (spreading ridges and hot spots) Dikes - intrusions from upper mantle Layered Gabbro - basement rock
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