Quantcast
Last updated on April 16, 2014 at 21:24 EDT

Latest Lithosphere Stories

2012-03-22 10:20:43

GREENBELT, Md., March 22, 2012 /PRNewswire-USNewswire/ -- A layer of partially molten rock about 22 to 75 miles underground can't be the only mechanism that allows continents to gradually shift their position over millions of years, according to a NASA-sponsored researcher. The result gives insight into what allows plate tectonics - the movement of the Earth's crustal plates - to occur. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) "This melt-rich layer is actually quite...

2012-03-12 21:04:59

Geologists at the Universities of Bonn and Cologne have come up with a new idea as to how the earliest continents were formed The earth's structure can be compared to an orange: its crust is the peel supported by the earth's heavy mantle. That peel is made up of a continental crust 30 to 40 kilometers thick. It is much lighter than the thinner oceanic crust and protrudes from the earth's mantle because of its lower density, like an iceberg in the sea. "According to the current theory, the...

2012-01-26 13:39:01

The new issue of LITHOSPHERE is online now. Papers present evidence for the on-going re-shaping of the Rocky-Mountain—Colorado Plateau region by young uplift driven from below (mantle buoyancy), research in the Aegean Sea that documents a newly defined extensional fault system, and study of the hydrologic heterogeneity of faulted and fractured sediment layers with implications for similar rocks to affect the flow of moisture downward toward the spent nuclear fuel geologic repository at...

Southern California's Tectonic Plates Revealed In Detail
2011-10-07 03:52:56

Rifting is one of the fundamental geological forces that have shaped our planet. Were it not for the stretching of continents and the oceans that filled those newly created basins, Earth would be a far different place. Yet because rifting involves areas deep below the Earth's surface, scientists have been unable to understand fully how it occurs. What is known is that with rifting, the center of the action lies in the lithosphere, which makes up the tectonic plates and includes the crust...

Diamonds Show Carbon Cycle May Reach Earth's Lower Mantle
2011-09-16 10:41:51

  By studying the chemistry of an unorthodox set of Brazilian diamonds, a team of researchers have discovered startling new information about the carbon cycle and the theory of plate tectonics. Researchers from the University of Bristol, Universidade de Brasilia, and the Carnegie Institution for Science studied what are known as "superdeep" diamonds, some of which originated from depths of 435 miles (700km) or more before erupting to the surface as volcanic rocks. Most diamonds...

The Cause Of Earth's Largest Environmental Catastrophe
2011-09-15 08:14:44

  Siberian traps and their relation to the mass extinction 250 million years ago The eruption of giant masses of magma in Siberia 250 million years ago led to the Permo-Triassic mass extinction when more than 90 % of all species became extinct. An international team including geodynamic modelers from the GFZ German Research Centre for Geosciences together with geochemists from the J. Fourier University of Grenoble, the Max Plank Institute in Mainz, and Vernadsky-, Schmidt- and...

2011-04-29 11:55:36

A team of scientists led by Rice University has figured out why the Colorado Plateau "“ a 130,000-square-mile region that straddles Colorado, Utah, Arizona and New Mexico -- is rising even while parts of its lower crust appear to be falling. The massive, tectonically stable region of the western United States has long puzzled geologists. A paper published today in the journal Nature shows how magmatic material from the depths slowly rises to invade the lithosphere -- Earth's crust and...

2010-12-14 23:56:21

While there continues to be considerable debate among geologists about the availability of oxygen in the Earth's mantle, recent discoveries by a University of Rhode Island scientist are bringing resolution to the question. Analysis of erupted rock from Agrigan volcano in the western Pacific near Guam found it to be highly oxidized as a result of its exposure to oxygen when it formed in the Earth's mantle. When, over millions of years, seafloor rocks are transported back into the Earth's...

d162f272a9ce0b57a95ce830aa5f0b0f1
2010-10-27 14:03:49

Researchers at the University of Bristol reveal today in the journal Nature that they have developed a seismological "Ëœspeed gun' for the inside of the Earth. Using this technique they will be able to measure the way the Earth's deep interior slowly moves around.  This mantle motion is what controls the location of our continents and oceans, and where the tectonic plates collide to shake the surface we live on. For 2,900 km (1800 miles) beneath our feet, the Earth is made of...

2010-09-01 13:56:00

HOUSTON, Sept. 1 /PRNewswire-USNewswire/ -- Why do we still find rocks from the Archean, one of the earliest geological eons on Earth dating from about 3.8 to 2.5 billion years ago? This is an apt question as our planet is one of the most dynamic in the solar system. Earth's crust has been constantly destroyed and created throughout its 4.5-billion-year history. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO)...


Latest Lithosphere Reference Libraries

0_a4a5653b4a287158357a3d5b37b58d01
2014-01-12 00:00:00

Earth science (or geoscience) is the science of the planet Earth. Earth science can be broken down into four major disciplines, which are: geography, geology, geophysics, and geodesy. These disciplines use physics, chemistry, biology, chronology and mathematics to arrive to a greater understanding of the principal areas of the Earth system. Since Earth is the only known life-bearing planet, Earth science is solely dedicated to the geophysical makeup of our own planet. One discipline,...

More Articles (1 articles) »