Earth Science Chapter 19 – the ocean basins section 2 – Features of the Ocean Floor

Abyssal plains cover about half of the deep-ocean basins and are the flattest regions on Earth

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Abyssal plains cover about half of the deep-ocean basins and are the flattest regions on Earth. Layers of fine sediment cover the abyssal plains. The thickness of sediments on the abyssal plains is determined by three factors. Although they are more common and widespread in the Atlantic and Indian Ocean basins than in the Pacific, abyssal plains are found in all major ocean basins. Approximately 40% of Earth’s ocean floor is covered by abyssal plains. The remainder of the ocean floor topography consists of hills, cone-shaped or flattopped mountains, deep trenches, and mountain chains such as the mid-oceanic ridge systems. Abyssal plains are often littered with manganese nodules containing varying amounts of iron, nickel, cobalt, and copper. The pea- to potato-sized nodules form by direct precipitation of minerals from the seawater onto a bone or rock fragment. Directory: cms -> lib08 -> GA01000549 -> Centricity -> Domain -> 3377 3377 -> Your Name Period Date Chapter 24 Earth Science Word Study Movements of the Ocean Domain -> Unit 9 – Societal and Technological Growth Domain -> Unit 1: Geog of Ga/GA’s Beginnings Page Numbers – Textbook (p. 1-97) crct prep Domain -> Unit 8 (Post wwii georgia) Study Guide (teacher copy) Domain -> SS8H8: Analyze the important events that occurred after wwi & their impact on Georgia Domain -> Name unit 6 Study Guide 3377 -> Earth Science Chapter 9 – a view of Earth’s Past Section 3 – The Mesozoic and Cenozoic Eras 3377 -> Earth Science Chapter 21 Section 1 Ocean Currents 3377 -> Earth Science Chapter 19 – the ocean basins section 1 – The Water Planet 3377 -> Chapter 12 Air Section 1 E. Q. What Causes Air Pollution? Download 5.89 Mb. Share with your friends: