The platform and the basement rock together form a craton.    From Wordnik.com.  [Physiography of the Earth's terrestrial surface] Reference

Africa's Kaap - Vaal craton and the equivalent Angolan, Zairean and.    From Wordnik.com.  [ANC Daily News Briefing] Reference

Together the shield and platform form what geologists call a craton.    From Wordnik.com.  [Formation of the Earth's crust] Reference

The craton of North America has been relatively stable for about 600 million years.    From Wordnik.com.  [Physiography of the Earth's terrestrial surface] Reference

Fipke also knew that the craton underneath the pipes he had found ran all the way up the Rockies.    From Wordnik.com.  [How a Rogue Geologist Discovered a Diamond Trove in the Canadian Arctic] Reference

Kimberlite pipes are created when magma bubbles up through a craton, expanding and cooling on its way up.    From Wordnik.com.  [How a Rogue Geologist Discovered a Diamond Trove in the Canadian Arctic] Reference

But Fipke knew that, 100 miles under those pipes, was a craton, a thick, old chunk of continental plate where diamonds form.    From Wordnik.com.  [How a Rogue Geologist Discovered a Diamond Trove in the Canadian Arctic] Reference

The continents of Australia, North America, South America, and Africa each have a single continuous craton forming their nucleus.    From Wordnik.com.  [Physiography of the Earth's terrestrial surface] Reference

The greenstones of the Kaapvaal craton in the northeast have been found to contain unicellular and biogenic filamentous structures, signs of some of the earliest forms of life.    From Wordnik.com.  [Nama Karoo] Reference

With two thirds of the country covered with the craton-type soil, in which the kimberlite stone which bears diamonds can be found, there has been a steady increase in diamond prospecting.    From Wordnik.com.  [ANC Daily News Briefing] Reference

Arizona formed at the southern edge of the craton by several methods.    From Wordnik.com.  [Tucson Citizen] Reference

One of those original continents is the North American craton, located mostly in the.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

These geologic units overlie the craton we want to study and so don't tell us very much.    From Wordnik.com.  [NYT > Home Page] Reference

The study area encompasses about 1500 meters of relief within the eastern Kaapvaal craton.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

In truth, nearly all of the USA is earthquake country, even the heartland of the North American craton.    From Wordnik.com.  [About.com Geology] Reference

Diachronous decratonization of the Sino-Korean craton: Geochemistry of mantle xenoliths from North Korea.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

The material composing the craton requires higher temperature/pressure to melt than the material in the upper mantle.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

The Hongzhen metamorphic Core Complex in the eastern Yangtze craton, eastern China was first recognized through structural studies.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Evolution of the Hongzhen metamorphic core complex: Evidence for Early Cretaceous extension in the eastern Yangtze craton, eastern China.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

In the stable Fennoscandian craton, where the Swedish Forsmark and Finnish Olkiluoto sites are located, glacial cycles create an added hazard.    From Wordnik.com.  [Featured Articles] Reference

(U-Th)/He thermochronometry constraints on unroofing of the eastern Kaapvaal craton and significance for uplift of the southern African Plateau.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Typically, throughout the world, kimberlite fields, where the craton is favourable for diamond preservation, include both barren and diamondiferous intrusions.    From Wordnik.com.  [Marketwire - Breaking News Releases] Reference

Nature, is composed of a 3-billion-year old craton underlain by younger lithosphere deposited as ocean floor subducted under the continent within the past billion years.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

If a craton shifts over one of these hotspots, there won't be any associated volcanism, unless there is extensive fracturing of the craton to allow the intrusion of magma.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

With the hundreds of samples we have to work with, we hope to find patterns that we can use to reveal the architecture of the ice-covered craton that we cannot see directly.    From Wordnik.com.  [NYT > Home Page] Reference

Glacier, we found a rich assortment of igneous and metamorphic rocks, probably eroded from the upstream craton, even though the local nunatak geology exposes only Beacon and Ferrar.    From Wordnik.com.  [NYT > Home Page] Reference

If you familiarize yourself with geologic time, the craton, changes in depositional environments, plate collisions, orogeny, and erosion, the Rockies become much more comprehensible.    From Wordnik.com.  [Denver Post: News: Breaking: Local] Reference

The scientists believe that the sharp boundary is between two types of lithosphere: the old craton and the younger material that should match the chemical composition of the sea floor.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Coincidentally, three years ago, researchers using a popular new technique called receiver function studies detected a sharp boundary below the North American craton at a depth of about.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Within the oldest core of the Kaapvaal craton (about 3. 7-3.1 billion years old) in eastern South Africa and Swaziland, evidence is preserved for the construction and amalgamation of one of Earth's oldest continents.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

Such seismic tomography has established that the bottom of the North American craton is about 250 km deep at its thickest, thinning out toward the margins where new chunks have been added to the continental lithosphere.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

"We are seeing a very consistent direction across the whole craton.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference

The top layer, the ancient craton, is chemically distinct from younger lithosphere below (the thermal root), which is separated from the asthenosphere by a boundary layer (LAB). (.    From Wordnik.com.  [PhysOrg.com - latest science and technology news stories] Reference

Dome region of the Pilbara craton.    From Wordnik.com.  [Daily News & Analysis] Reference

Sea, Mediterranean, Kaapvaal craton, Portugal, Deccan basalt, biofilms, trace element partitioning, Nankai Trough, Rodrigues carbonate platform, Guatemala, Chile Ridge.    From Wordnik.com.  [EurekAlert! - Breaking News] Reference