'Mid ocean ridges' presentation slideshows

Created by OKTechMasters & Sara Duncan Modified by Prof. Rodriguez

652 views • 56 slides

The Ocean Floor

The Ocean Floor. Description of. Bottom Topography. Atlantic Ocean Continental Shelf. Typical Oceanic Profile. ocean basin. continental margin. coastal region. oceanic ridge. continental shelf. Slope. Abyssal plain. Depth > 4000 m. The Continental Margin. continental margin.

484 views • 35 slides

VOLCANOES

VOLCANOES. Melting the Mantle. 1. Increase Temperature 2. Decrease Pressure 3. Alter Composition (to decrease melting temperature). Where Does Melting Occur?. 1. Mid Ocean Ridges (decompression) 2. Hotspots (high temperature + decompression)

552 views • 34 slides

Sea Floor Spreading

Sea Floor Spreading. HDWK. Mid Ocean Ridges Detected a long time ago Molten Material (go look! Pillow Lava!) Magnetic Stripes Drilling Samples Subduction and Deep Ocean Trenches. Mid Ocean Ridges. Mid-Atlantic Ridge Pingvellir, Iceland.

461 views • 26 slides

Plate Tectonics II

679 views • 24 slides

Evidence of Plate Motion

432 views • 20 slides

Plate tectonics

Plate tectonics. LAYERS OF THE EARTH. There are 5 layers of the Earth: CRUST MOHO - Mohorovi?i? discontinuity MANTLE OUTER CORE INNER CORE . TWO CRUST TYPES. There are two different types of crust.

289 views • 20 slides

Volcanoes

510 views • 19 slides

Theory of plate tectonics

363 views • 19 slides

Metamorphism

Metamorphism. Chapter 6 Pages 130-149. Causes of Metamorphism. Internal heat of the Earth Pressure Fluid composition. Role of Temperature. Larger crystals are formed in rocks during metamorphism Increased geothermal gradient such as 30 o C per km of depth

415 views • 18 slides

Chapter 13 Section 1

222 views • 14 slides

How and Why the Plates Move Part II

Convection. How and Why the Plates Move Part II. Convection currents in the mantle move the plates!. Convection currents cause :. The plates to pull apart which leads to sea floor spreading (ridge push) The plates to collide which leads to subduction (slab pull). Plate boundaries.

279 views • 13 slides

Evolution of Australian Biota

Evolution of Australian Biota. Identify and describe evidence that Australia was once part of Gondwana. Together with New Guinea, it is the only place where monotremes (egg laying mammals) can be found.

292 views • 12 slides

Volcanoes

Volcanoes.

230 views • 12 slides

volcanism

volcanism. Types of volcanoes. Underwater Volcanism!. The formation of underwater volcanoes is very similar to the ones on dry land. The pressure of the magma builds up and when it finds a weak spot on the crust it rips it open and starts an eruption .

339 views • 10 slides

Volcanoes

Volcanoes. October 29, 2013. What causes volcanoes to form?. Form at areas of the earth surface through which magma and volcanic gases pass Because the temperature of the mantle is fairly constant, decreasing pressure allows for magma to be formed, usually at diverging plate boundaries.

246 views • 10 slides

The Rock Cycle

The Rock Cycle. The Rock Cycle: There are many different things that can happen to a rock that will change it into a different type of rock. Ex. Weathering/erosion/compaction/cementation Melting/cooling Heat/pressure. Igneous Rocks. Igneous rocks are created when

247 views • 8 slides

Parts of the Ocean Floor

Parts of the Ocean Floor. Parts of the ocean. Continental shelf- the gradual sloping of a continent that extends under the ocean Atlantic ocean- extends 100 km to 350 km into the sea Pacific ocean- extends 10 to 30 km. Continental slope and Abyssal plains.

376 views • 6 slides

By RACHEL AND MILLIE

fORESTS. By RACHEL AND MILLIE. WHAT DO YOU KNOW ABOUT SUSTAINABLE FORESTRY ?. Of any commonly used building materials, wood has the lowest energy consumption and the lowest C02 emission. Due to wood's thermal insulation properties, timber frame housing uses less energy.

163 views • 5 slides

The seafloor spreading hypothesis explains how

The seafloor spreading hypothesis explains how. Ocean ridges spread/ open up over time and are filled with new magma Rocks get progressively older farther away from the ridge crests Symmetrical patterns of magnetic reversals on either side of the mid ocean ridges All of the above

183 views • 3 slides