Sentences with phrase «high mantle»

I mention this only because I would be thrilled to have more brick (beyond the fireplace and ceiling high mantle) in our home!

A large wooden and steel arch artwork highlighted the high mantle.

Rather, locally high mantle temperatures are the key ingredient.»

Based on the volcanic record in and around Iceland over the last 56 million years and numerical modeling, Brown and Lesher show that high mantle temperatures are essential for generating the large magma volumes that gave rise to the North Atlantic large igneous provinces bordering Greenland and northern Europe.

New research from UC Davis and Aarhus University in Denmark shows that high mantle temperatures miles beneath Earth's surface are essential for generating such large amounts of magma.

High points on the ridges tend to be associated with higher mantle temperatures, while low points are associated with a cooler mantle.

Not exact matches

While some high - profile CEOs like Amazon's Jeff Bezos have eschewed investor calls, many tech CEOs, including Zuckerberg, carry the mantle of explaining their business to the world.

This crustal weakness allowed unusually high heat flow from deeper mantle sources to «super-heat» the highly organic Niobrara source rocks, which in turn generated the significant oil and gas deposits now contained in the Niobrara and Codell formations.

I don't think having a high calibre 2C is a bad thing at all, especially if Larkin can continue to develop and everntually earn the mantle of 1C from Z.

The discovery is vexing: If liquid iron conducts heat into the mantle at such a high rate, there wouldn't be enough heat left in the outer core to churn its ocean of liquid iron.

Scientists studying volcanic hotspots have strong evidence of this, finding high helium - 3 relative to helium - 4 in some plumes, the upwellings from Earth's deep mantle.

Because of the high temperature in the inner parts of Earth's mantle, the CO2 is released back into the atmosphere during volcanic eruptions.

Quakes that are confined to the uppermost region of the Juan de Fuca plate — the crust — have an upper magnitude of about 7, while quakes extending to the mantle level below the crust could have magnitudes as high as 8 on the Richter scale — 30 times more energy than a magnitude 7 quake.

Higher internal heat should overall create faster convection — that fonduelike mantle circulation.

By looking at how the chemicals there react with each other at very high pressures and low temperatures, they were able to predict which compounds are formed in the mantle.

The team synthesized samples of bridgmanite in the laboratory and subjected them to the high - pressure conditions found at different depths in the mantle.

The new, high - resolution map of the mantle — the hot rock below Earth's crust but above the planet's iron core — not only shows these connections for many hotspots on the planet, but reveals that below about 1,000 kilometers the plumes are between 600 and 1,000 kilometers across, up to five times wider than geophysicists thought.

As to the question of why Earth has never experienced these changes, he said: «Mars is much smaller than Earth, with a different temperature profile and higher iron content of its silicate mantle.

The found that 3He to 22Ne ratio from the shallow mantle is significantly higher than the equivalent ratio in the deep mantle.

Instead, the concentration of iron - loving elements, called siderophiles, remains relatively high in Earth's mantle.

High helium - 3 levels had been found earlier in hot - spot lavas, indicating they came from the lower mantle.

The ratio of oxygen - 18, a rare isotope, to ordinary oxygen - 16, was considerably higher in the stone than the ratio found in Earth's mantle.

«The postures and patterns can be quite flashy, such as standing very tall, raising the body mantle high above the eyes, and turning very dark.»

Many of the «mantled» fruits produced no oil at all, despite being genetically identical to high - yielding plants.

Octopuses also displayed on high ground, standing with their web spread and their mantle elevated.

Using Australia's National Computational Infrastructure's supercomputer Raijin, the team created high - resolution three - dimensional simulations of mantle evolution over the past 200 million years to understand the coupling between convection in the deep Earth and volcanism.

While studying for his doctorate with the study's senior author, UC Berkeley Prof. Barbara Romanowicz, Lekic developed a method to more accurately model waveform data while still keeping computer time manageable, which resulted in higher - resolution images of the interaction between the layers of Earth's mantle.

This allows magma and hydrothermal fluids originating in the mantle to intrude into Lusi's sediments, which triggers massive reactions and creates gas that generates high pressure below Earth's surface.

The discovery of a novel high - density mineral means that Earth's mantle is a more restless place than scientists suspected — and offers new clues to the planet's history

The authors note that this ULVZ's location, shape and large diameter, which is proportionate with the width of the plume higher up in the lower mantle, suggests a close link between the ULVZ and the rising plume above it.

In a lab at Ohio State, the researchers compress different minerals that are common to the mantle and subject them to high pressures and temperatures using a diamond anvil cell — a device that squeezes a tiny sample of material between two diamonds and heats it with a laser — to simulate conditions in the deep Earth.

A sphere of plutonium was surrounded by a mantle of high explosives.

Because there's no way to directly study deep mantle rocks, Panero and Pigott are probing the question with high - pressure physics experiments and computer calculations.

Creating high - resolution images of the mantle will allow us to contribute to these discussions.»

It is commonly assumed that enormous masses of magma ascended from the deep mantle up to higher levels, and that this hot mantle plume (the Tristan mantle plume) weakened the continental lithosphere, eventually causing the break - up of the continental plate of Gondwana.

«Interactions between oxygen and iron dictate Earth's formation, differentiation — or the separation of the core and mantle — and the evolution of our atmosphere, so naturally we were curious to probe how such reactions would change under the high - pressure conditions of the deep Earth,» said Mao.

If Pluto's core was rocky and its mantle icy, most of the material blasted into space by the collision would have been ice, accounting for Pluto's high rock - to - ice ratio today.

Not all scientists are convinced that deep mantle plumes can propel tectonic plates, or are responsible for hot spots areas of unusually high volcanic activity such as the one under Réunion island.

Mookherjee and Andreas Hermann from the University of Edinburgh estimate that in the deep Earth — roughly 250 to 370 miles into the mantle — water is stored and transported through a high - pressure form of the mineral brucite.

«Because the diamond windows are transparent, we can look into the high - pressure device and watch reactions occurring at conditions of the deep mantle,» he said.

The water contained within ringwoodite in the transition zone is forced out when it goes deeper (into the lower mantle) and forms a higher - pressure mineral called silicate perovskite, which can not absorb the water.

The temperature is about 600 degrees Fahrenheit (325 degrees Celsius) higher in this region compared with the average mantle, Courtier said.

And a «lot of water» here means hundreds or thousands of Earth oceans's worth of water, completely covering the silicate mantle of the planets, most likely in hundreds of km - thick high - pressure water ice layers, below thick liquid oceans or high - pressure steam atmospheres.

A plausible scenario could be that the plume melting produces high - temperature magmas that impinge the crust to produce the crustal partial melts, and thereby promotes interactions of crustal and mantle partial melts.

July 25, 2017 - Hydrogen at elevated temperature creates high electrical conductivity in the Earth's mantle.

Due to the high viscosity of the Earth, the flow of mantle rocks which controls the rebound process is very slow — at a rate of about 1 cm / year near the center of rebound today.

Assuming an iron - rich planet with an internal structure like Earth, modelling results for the first discovered super-Earth (GJ 876 d) indicate the existence of a threshold in planetary diameter above which a super-Earth «most certainly» has a high water content (an «ocean planet» or «water world,» where thick layers of water and pressurized ice surround a rocky mantle and core); this threshold was found to be around 24,000 kilometers (or nearly 15,000 miles) in the particular case of GJ 876 d (Valencia et al, 2007).

In contrast, super-Earths with a similar concentration but larger absolute amount of radioactive heat sources (i.e., uranium and thorium) than Earth would produce more internal heat, more vigorous mantle convection, and faster plate tectonic action involving thinner plates, which may promote planetary habitability with lower mountain ranges but higher volcanic activity and an atmosphere with a greater relative composition of volcanic and lighter gases (Sasselov and Valencia, Scientific American, August 2010; Valencia and O'Connell, 2009; and Valencia et al, 2007).

This innovative high - tech formulation offers gentle yet thorough cleansing without stripping skin or disturbing the delicate moisture mantle.

Thus, mantle - derived rocks have higher (143Nd / 1 4Nd) The use of Sm — Nd dating to determine the age of komatiites opens the discussion of the benefits / risks of isochrons constructed from compositionally distinct whole rocks as opposed to isochrons created by separating the constituent minerals from a single rock.