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Last updated on April 23, 2014 at 21:24 EDT

Latest GEODynamics Stories

Earth core structure shutterstock_179800859
2014-04-05 06:41:23

April Flowers for redOrbit.com - Your Universe Online The contours of the Earth's crust are influenced by the high temperatures deep within the Earth's mantle, according to a new study published in Science. A team of researchers, led by Brown University, demonstrated that those temperature differences control the elevation and volcanic activity along mid-ocean ridges, the colossal mountain ranges that line the ocean floor. Forming at the boundaries of tectonic plates, mid-ocean ridges...

3D Computer Models Used To Solve Age-old Geologic Riddle
2014-03-26 12:15:54

[ Watch The Video: The Dynamics of Continental Accretion ] Robert Perkins, University of Southern California New study provides explanation for long-debated origin of bow-shaped mountain belts that form along the edges of colliding tectonic plates An international team of scientists that included USC's Meghan Miller used computer modeling to reveal, for the first time, how giant swirls form during the collision of tectonic plates – with subduction zones stuttering and recovering...

earthquake
2014-03-05 04:54:55

Lee Rannals for redOrbit.com - Your Universe Online A new study published in the journal Science reveals new information about the forces behind earthquakes. Geoscientists from the University of California, Los Angeles used a technique known as seismic tomography to study the structure of the Pacific Plate. This technique helped the team determine the plate’s thickness and image the interior of the plate and the underlying mantle, which they were able to relate to the direction of...

Oceans Earths Mantle
2014-01-27 13:52:44

Lee Rannals for redOrbit.com - Your Universe Online University of Liverpool scientists believe that up to three and a half times the water of all the Earth’s oceans could be being transported beneath our feet. Seismologists reported in the journal Geology that they found deep sea fault zones could transport much larger amounts of water from Earth’s oceans to the upper mantle than previously thought. The team analyzed earthquakes that occurred more than 60 miles below the Earth’s...

Source Of Galapagos Volcano
2014-01-21 14:35:32

Brett Smith for redOrbit.com - Your Universe Online A new analysis from a team of American researchers has found the volcanic plume that created the Galapagos Islands isn’t where models have projected it. The study team said their findings could also explain volcanic activity around the islands. According to the study, which was published on Sunday the journal Nature Geoscience, the Galapagos plume is at a depth of 155 miles, approximately 100 miles southeast of the westernmost island...

Molten Rock Support Atlas Mountains In Morocco
2014-01-03 04:28:44

April Flowers for redOrbit.com - Your Universe Online The standard model for mountain structure, in which high topography must have deep roots for support, is defied by the Atlas Mountains, according to a new study from the Earth Sciences department at the University of Southern California (USC). The team of scientists created a new model which reveals that the Atlas Mountains are floating on a layer of hot molten rock flowing beneath the lithosphere — the Earth's most rigid outer...

East Antarctica Is Pushing Around Its Softer-Mantled Western Half
2013-12-12 07:51:20

April Flowers for redOrbit.com - Your Universe Online It's easy to know what to do when half-siblings are pushing each other around, but what do you do about half-continents? A team of researchers, led by Ohio State University, have discovered that East Antarctica is pushing West Antarctica around. West Antarctica is losing weight in the form of billions of tons of ice per year, making its mantle rock softer. This rock is being nudged westward by the harder mantle beneath East...

Antarctic Volcano Seamounts Present Many Riddles To Volcanologists
2013-10-18 05:20:11

April Flowers for redOrbit.com - Your Universe Online When you think of the Antarctic, images of snow, ice and glaciers are the usual associations. We forget that it is also a region of fire, dotted with volcanoes on the mainland and the surrounding islands. Some of these volcanoes are extinct and some are still active, such as the Marie Byrd Seamounts in the Amundsen Sea. Today, their summit plateaus are at depths of 7,800 - 5,200 feet, making them difficult to reach with conventional...

Newly Discovered Seismic Waves Reveal Earth's Volcanic Hotspots
2013-09-06 08:40:14

April Flowers for redOrbit.com - Your Universe Online A previously unknown channel of slow-moving seismic waves in the Earth’s mantle has been discovered by a team of scientists from the University of California, Berkeley and the University of Maryland. These waves help to explain "hotspot volcanoes" that give birth to island chains such as Hawaii and Tahiti. The findings of this study have been published in Science Express. Hotspot volcanoes form in the middle of tectonic plates,...

Earth's Origins May Be Explained Through Mantle's 'Hidden Flux'
2013-07-17 14:46:32

Brett Smith for redOrbit.com - Your Universe Online One of the more popular theories surrounding the formation of the planets involves the countless collisions of smaller objects in orbit around the sun 4.5 billion years ago. However, proponents of that theory are missing one thing: the Earth's chemical composition is distinctly different from the meteors that are currently striking the planet. Scientists have found that the lead-uranium ratio of meteors is much different than that of...