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Lecture #07- Mid-Ocean Ridges

Lecture #07- Mid-Ocean Ridges

Lecture #07- Mid-Ocean Ridges. Mid-Ocean Ridges (MOR). Mid-Ocean ridges are divergent plate boundaries; these are regions where plates move away from one another As you might imagine, they occur only between oceans and oceans (continents are not involved). Mid-Ocean Ridges.

By LionelDale
(267 views)

The Ocean Floor

The Ocean Floor

The Ocean Floor. Studying the Ocean Floor. Scientists use sonar to determine the oceans depth The sound moves through the water, bounces off the ocean floor, and returns to the ship. Ocean Basins. Ocean basins are low areas of Earth that are filled with water

By paul
(428 views)

The Seafloor

The Seafloor

The Seafloor. Continental margin: Shelf, slope, rise. Submarine canyons, turbidity currents. Relationships between : shelf, slope, canyons, fans, rise. Abyssal plain. Vast and flat Interrupted by Seamounts (volcanic in origin) Guyots or tablemounts (eroded islands).

By albert
(247 views)

Guided Notes on Seafloor Spreading

Guided Notes on Seafloor Spreading

Guided Notes on Seafloor Spreading. Chapter 17, Section 2. 1. What were the opinions of most scientists about the topography…. Until the mid-1900’s, most scientists thought that the ocean floor was essentially flat. 2. Which technology allowed scientists to map the ocean floor?.

By JasminFlorian
(889 views)

Continental Drift and Plate Tectonics

Continental Drift and Plate Tectonics

Continental Drift and Plate Tectonics . Take-Away Points. How we know plate tectonics happens Most earthquakes and volcanoes occur along plate boundaries New ocean crust is created along mid-ocean ridges Old ocean crust is recycled at subduction zones

By andrew
(250 views)

Continental Drift and Sea-floor Spreading

Continental Drift and Sea-floor Spreading

Continental Drift and Sea-floor Spreading. Chapter 4, Sec.2. Alfred Wegner. Theory of Continental Drift Noticed “puzzle-like” fit of continents. Support for Continental Drift:. Same fossils on different continents Similar types of rocks Grooves left by glaciers. Mesosaurus fossils

By frieda
(279 views)

Alfred Wegener and Pangaea

Alfred Wegener and Pangaea

Alfred Wegener and Pangaea. Pangaea is the name given to the single giant continent in a proposal by Wegener (1912). The theory of continental drift states that the continents were once a single landmass that drifted apart and are still doing so. Evidence for Continental Drift.

By babu
(499 views)

Tectonic petrology - robust tests of paleotectonic environments

Tectonic petrology - robust tests of paleotectonic environments

Tectonic petrology - robust tests of paleotectonic environments. GEOS408/508- Lec 7. Magmatism at ocean ridges. Magmatism @ spreading ridges MORB. Most voluminous, decompression melting of peridotite 5-7 km oceanic crust; makes the harzburgite-gabbro-basalt “trinity”

By yoko
(186 views)

THE ORIGINS OF LIFE

THE ORIGINS OF LIFE

THE ORIGINS OF LIFE. Other ideas. Panspermia (aka cosmozoan). Life came from somewhere else and seeded Earth The support for this depends up on evidence that life exists elsewhere than on Earth and the evidence that it may travel through open space. © 2008 Paul Billiet ODWS. Viking.

By alva
(230 views)

Earth’s Changing Surface

Earth’s Changing Surface

Earth’s Changing Surface. Continental Drift. In 1912, German scientist, Alfred Wegener hypothesized that the continents of Earth move over time. He also proposed that all the continents were once massed together as one, called Pangaea. Evidence: Continents fit like puzzle pieces.

By albert
(339 views)

Strategies for Answering W.R. Questions

Strategies for Answering W.R. Questions

Strategies for Answering W.R. Questions. Re-write the prompt as questions. Write one question for each part of the prompt that requires an answer. Answer each question. Begin each answer by restating the question. Complete the sentence with information that you learned in class.

By carol
(115 views)

Daily Work

Daily Work

Daily Work. _________ Layer of molten iron and nickel that surrounds the inner core. _________ Thinnest, outermost layer of Earth; ranges from 5 to 100 km thick. _________ Name of the theorized super continent. _________ Rigid layer consisting of the crust and uppermost part of the mantle.

By bettina
(107 views)

Metamorphic Rocks

Metamorphic Rocks

Metamorphic Rocks. What is a metamorphic rock? Rocks, either igneous, sedimentary, and/or metamorphic, that have been changed in size, shape, texture, and even mineralogy by the application of heat, pressure, and chemically active fluids . Metamorphic Rocks. Metamorphic Rocks.

By kairos
(237 views)

T21C-1981 Estimating Earth's Heat Flux Will Gosnold, Department of Geology and Geological Engineering University of Nor

T21C-1981 Estimating Earth's Heat Flux Will Gosnold, Department of Geology and Geological Engineering University of Nor

T21C-1981 Estimating Earth's Heat Flux Will Gosnold, Department of Geology and Geological Engineering University of North Dakota willgosnold@mail.und.edu. [2] Hydrothermal Circulation

By calla
(120 views)

Ch – 26 Electric Field

Ch – 26 Electric Field

Ch – 26 Electric Field . Electric Field Model. One or more charges (source charges) alter the space around them by creating an electric field, E . A separate charge (test charge or probe) experiences a force F , exerted by the field. F = q E. Electric Field of a Point Charge.

By omer
(243 views)

THE THEORY OF PLATE TECTONICS

THE THEORY OF PLATE TECTONICS

THE THEORY OF PLATE TECTONICS. INTRODUCTION. Tectonics- large scale deformational features of the crust Plate tectonics Earth’s outer shell divided into plates Plates move & change in size thru time Activity at plate boundaries Combines: Continental drift Sea-floor spreading

By miyo
(248 views)

Outline Properties of silicate liquids Adiabatic decompression melting Melting temperature(s) of lherzolite Model for mi

Outline Properties of silicate liquids Adiabatic decompression melting Melting temperature(s) of lherzolite Model for mi

Outline Properties of silicate liquids Adiabatic decompression melting Melting temperature(s) of lherzolite Model for mid-ocean ridges Melting in mantle plumes Effects of water and pyroxenite/eclogite veins Phase equilibria of melting (only the basics)

By genna
(157 views)

Geological Landforms of the ocean floor

Geological Landforms of the ocean floor

Geological Landforms of the ocean floor. Vocabulary Continental shelf Continental slope Mid-ocean ridge Rift zone Trenches Ocean basin. Main Idea : Geological landforms of the ocean floor can be identified using diagrams and illustrations. Lesson 2. Continental shelf.

By rafi
(266 views)

Sound effects from Bravenet.com and M.B. Alluisi

Sound effects from Bravenet.com and M.B. Alluisi

Race to the Reef. Sound effects from Bravenet.com and M.B. Alluisi. Directions. For each correctly answered question your fish escapes to live another day in the dangerous depths . Answer all 20 questions correctly to live safely in the reef. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12.

By teranika
(96 views)

Jeopardy

Jeopardy

Jeopardy. Vocabulary. Shoreline / Restoration. Ocean Floor. Oceans. Currents. Q $100. Q $100. Q $100. Q $100. Q $100. Q $200. Q $200. Q $200. Q $200. Q $200. Q $300. Q $300. Q $300. Q $300. Q $300. Q $400. Q $400. Q $400. Q $400. Q $400. Q $500. Q $500. Q $500.

By collier
(3 views)

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