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Geolody 0-60 west

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Madison Fugate

on 20 February 2013

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Transcript of Geolody 0-60 west

Discovering Earth 0-60 West Tectonic boundaries Types of boundaries in our region. Countries: Greenland, Iceland, United Kingdom,
Portugal, France, Spain, Morocco, Mauriana.
The Atlantic Ocean.
Temperate Zone. Tectonic Plates South American Plate- a tectonic plate covering the continent of South America and extending eastward to the Mid Atlantic Ridge.
Scotia Plate- An oceanic tectonic plate bordering the South American plate on the north, the south sandwich microplate to the east, and the antartic plate on the south and west.
Antartic Plate- has a boundary with the Nazca Plate, the South American Plate, the African Plate, the Australian Plate, the Scotia Plate and a divergent boundary with the Pacific Plate forming the Pacific-Antarctic Ridge Divergent boundaries- At divergent boundaries new crust is created as two or more plates pull away from each other. Oceans are born and grow wider where plates diverge or pull apart.
convergent boundaries- crust is destroyed and recycled back into the interior of the Earth as one plate dives under another.
conservative boundaries- faults that occur when two plates slide against one another. Future Movement This ridge was formed by divergent boundaries
and seafloor spreading.
An underwater mountain range.
10,000 Miles Long! (16,000 km)
75 miles wide! The Gully (Atlantic)
King's Trough
Milwaukee Deep
Puerto Rico Trench
Romanche Trench
South Sandwich TrenchTongue of the Ocean Madison Fugate-Geologist
Ben Gutierrez- Seismologist
Tyler Hunter- Volcanologist
Olivia Fiser- Paleogeographer Ocean Ridges Rift Valley Mid Atlantic Ridge Ocean Trenches Made from the movement of Tectonic Plates Nansen-Gakkel Ridge Knipovich Ridge Mohn's Ridge Jan Mayen Platform Kolbeinsey Ridge Iceland The Mid-Atlantic Ridge The South Atlantic part of the Mid Atlantic Ridge. The Speiss Seamount Ridge American Antarctic Ridge form when two land masses push together from plate tectonics, eathquake upheaval, volcanic action, or similar geological events. Some ridges are the results of weathering or erosion, where harder rock remains after the surrounding softer terrain has washed away. form as a result of a continental plate breaking apart Rift valleys lie along the axis of the many mid-ocean ridges, containing many active volcanoes that mark the region where the oceanic crust is formed by volcanic eruptions. Future Movement If we continue present-day plate motions the Atlantic will widen, Africa will collide with Europe closing the Mediterranean Sea, Australia will collide with South East Asia, and California will slide northward up the coast to Alaska. What Is a Volcano? A mountain or hill having a crater or vent which lava, rock fragments, hot vapor, and gas are or have been. New subduction zones along the eastern coasts of North America and South America will begin to form. The Mid-Atlantic Ridge will be subducted and the continents will come closer together. "Pangea Ultima" will form as a result of the subduction of the ocean floor of the North and South Atlantic beneath eastern North America and South America. Have a small ocean basin trapped at its center. One major eruption was the eruption of Fuyal. This eruption created a new island but was soon deteriorated. The eruption of Pico. The lava flows of this eruption reach both Coasts of Europe and The United States. Tristan da Cunha erupted in it forced the evacuation of the whole island of The likely hood of any future activity is not major, mainly because most of the volcanoes that are active are beneath the ocean so the lava is just going to harden before any real damage occurs. Tectonic Plates The Earth is going to be very different place 250 million years from now.
Africa is going to smash into Europe as Australia migrates north to merge with Asia.
The Atlantic Ocean will probably widen for a spell before it reverses course and later disappears. Africa has been slowly colliding with Europe for millions of years. Italy, Greece and almost everything in the Mediterranean is part of the African plate, and it has been colliding with Europe for the last 40 million years. How Earth quakes work Waves Future Activity Two plates slide past each other and rub together, and sometimes their edges suddenly crack or slip and suddenly release huge amounts of energy. This energy is called seismic waves. Seismic waves are waves of energy that travel through the earths layers. They are the result of earthquakes. P- Waves also known as primary waves travel faster than any other waves through the earth. These waves can travel through any material s-waves also known as secondary waves can only travel through solids. L- waves known as surface waves can be the most destructive. Historic Earthquake On Novemver 25, 1941 in the Northern Atlantic ocean an earthqueake with an 8.4 magnitude struck.
Location- 30degrees North 10.6 degrees west
Portugal-Marocco area
Fatalities- 13 There could be same future siesmic activity along the mid atlantic ridge or near the scotia plate. Mountains The only mountains in this region are the Alps moutains. 750 Miles Long! The Alps were formed over hundreds of millions of years as the African and Eurasian tectonic plates collided Future Movement
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