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Mantle Current Events, Mantle News Articles.
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Journey to the center of the Earth -- Imperial scientists explain tectonic plate motions
The first direct evidence of how and when tectonic plates move into the deepest reaches of the Earth is published in Nature today. Scientists hope their description of how plates collide with one sliding below the other into the rocky mantle could potentially improve their ability to assess earthquake risks. (2008-02-21)

Evidence Found For Molten Rock Two Thousand Miles Beneath Earth's Surface
Deep inside the earth, two thousand miles beneath its surface, pockets of molten rock can be found in a region where many scientists did not expect to find anything but solid rock. Researchers funded by the National Science Foundation report the finding in this week's issue of the journal Nature. (1998-02-11)

Ascent or no ascent?
The largest magmatic events on Earth are caused by massive melting of ascending large volumes of hot material from the Earth's interior. (2015-04-24)

Transportation of water into the deep Earth by Al-phase D
Researchers at Ehime University have recently measured the propagation speed of ultrasonic waves in an aluminum-rich hydrous mineral called Al-phase D at pressure conditions relevant to the Earth's deep mantle. Their results suggest that seismic shear anomalies observed locally beneath subduction zones may reveal the presence of hydrous minerals in the uppermost lower mantle, which would have important implications for the Earth's interior because hydrogen affects considerably the physical and chemical properties of mantle minerals. (2020-11-30)

Using unique seismometer array, seismologists map mantle flow
Seismologists at Washington University in St. Louis and colleagues at Brown University and Scripps Institute of Oceanography have mapped the flow pattern of the earth's mantle in one of the most seismically active regions in the world. The results of this study help scientists to understand the path followed by material that is erupted at volcanoes. (2001-04-26)

Uncovering new understanding of Earth's carbon cycle
A new study led by a University of Alberta PhD student--and published in Nature--is examining the Earth's carbon cycle in new depth, using diamonds as breadcrumbs of insight into some of Earth's deepest geologic mechanisms. (2020-09-23)

UBC study may solve age-old mystery of missing chemicals from Earth's mantle
Observations about the early formation of Earth may answer an age-old question about why the planet's mantle is missing some of the matter that should be present, according to UBC geophysicist John Hernlund. (2007-12-05)

Geophysical observations reveal the water distribution and effect in Earth's mantle
Professor Eiji Ohtani from Tohoku University, Japan, summarized the content, distribution and effect of water in the Earth's mantle, published in National Science Review. (2019-07-10)

When the Earth mantle finds its core
The Earth's mantle and its core mix at 2900 km under our feet in a mysterious zone. A team of geophysicists has just verified that the partial fusion of the mantle is possible in this area when the temperature reaches 4200 Kelvin. This reinforces the hypothesis of the presence of a deep magma ocean. The results have an effect in the understanding of the dynamics, composition and formation of the depths of our planet. (2010-09-17)

Biggest and best diamonds formed in deep mantle metallic liquid
New findings explain how the world's biggest and most-valuable diamonds formed -- from metallic liquid deep inside Earth's mantle. The research team studied large gem diamonds like the world-famous Cullinan or Lesotho Promise by examining their so-called 'offcuts,' and determined that these diamonds sometimes have tiny metallic grains trapped inside them. These inclusions indicate that the diamonds formed as pure carbon crystallized from a pool of liquid metal. (2016-12-15)

Getting to the root of Iceland's molten rock origins
New data reveal an unprecedented depiction of a region of partially molten rock deep within the Earth, which appears to be feeding material in the form of a plume to the surface, where Iceland is located. (2017-07-27)

Remixed mantle suggests early start of plate tectonics
New Curtin University research on the remixing of Earth's stratified deep interior suggests that global plate tectonic processes, which played a pivotal role in the existence of life on Earth, started to operate at least 3.2 billion years ago. (2020-06-11)

A new tool to predict volcanic eruptions
Earth's atmosphere is made up of 78% nitrogen and 21% oxygen, a mixture that is unique in the solar system. But where did the nitrogen come from? Did it escape from Earth's mantle through volcanic activity? To try to answer these questions, CNRS researcher Jabrane Labidi and his colleagues collected samples of gas from several volcanic sites. Their highly precise data could help to predict future volcanic eruptions. (2020-04-15)

Location of upwelling in Earth's mantle discovered to be stable
A study published in Nature today shares the discovery that large-scale upwelling within Earth's mantle mostly occurs in only two places: Beneath Africa and the Central Pacific. These upwelling locations have remained remarkably stable over geologic time, despite dramatic reconfigurations of tectonic plate motions and continental locations on the Earth's surface. The study describes a plate tectonic (2013-06-26)

How to interact between mantle and crustal components in the subduction zone?
Subduction process drives the differential evolution of the earth and realizes material cycle and energy exchange. Recent studies have shown that orogenic peridotites reveal crust-mantle interaction in subduction zone. SCIENCE CHINA Earth Sciences has published relevant reports. (2019-05-24)

A rising force: new study on ancient mantle plumes
Mantle plumes are bodies of hot buoyant material that rise through Earth's mantle. Much has been written about young mantle plumes, but those between 250 and 4000 million years old must also be considered to have a complete picture of the role of mantle plumes in Earth processes. Editors Richard Ernst and Kenneth Buchan (Geological Survey of Canada) addressed this need in a new book, Mantle Plumes: Their Identification Through Time, recently published by GSA. (2002-01-25)

Imaging and discovery from USArray and EarthScope
Unprecedented dense deployment of EarthScope USArray Transportable Array, Flexible Array and Magnetotelluric instruments is providing data that are being used to develop a new generation of high-resolution Earth models and understanding of structure and processes. (2009-04-10)

New aluminium hydroxide stable at extremely high pressure
A new hydrous phase, ?-AlOOH, was observed to be stable at pressures above ?200 GPa. The stability of ?-AlOOH at extremely high pressures may affect the modelling results of the internal structure and deep water circulation of some extra-solar planets, such as terrestrial super-Earths, because the hydroxide may store water in these regions. (2019-12-10)

News from Cancer: Risk factors for deadly form of lymphoma
A new study indicates that the incidence of mantle cell lymphoma, an aggressive type of non-Hodgkin's lymphoma, is on the rise, most frequently striking men, Caucasians and older individuals. (2008-07-07)

Crustal limestone platforms feed carbon to many of Earth's arc volcanoes
A new analysis suggests that much of the carbon released from volcanic arcs, chains of volcanoes that arise along the tectonic plates of a subduction zone, comes from remobilizing limestone reservoirs in the Earth's crust. (2017-07-20)

Dissection of the 2015 Bonin deep earthquake
Researchers at Tohoku University's Department of Geophysics, have been studying the deep earthquake which occurred on May 30, 2015, to the west of Japan's Bonin Islands. (2017-03-15)

Diamonds show depth extent of Earth's carbon cycle
Scientists have speculated that Earth's carbon cycle extends into the deep Earth, but until now there has been no direct evidence. Researchers analyzed diamonds that originated from the lower mantle and erupted to the surface. Analysis shows compositions consistent with the mineralogy of oceanic crust. This finding is the first direct evidence that slabs of oceanic crust sank into the lower mantle and that material, including carbon, is cycled between Earth's surface and deep interior. (2011-09-15)

Innovative treatment approach to mantle cell lymphoma results in a high complete remission rate
Researchers at Memorial Sloan-Kettering Cancer Center are achieving an exceptionally high complete remission rate in patients with mantle cell lymphoma, a subtype of non-Hodgkin's lymphoma that is currently considered incurable. (2004-06-21)

Map of flow within the Earth's mantle finds the surface moving up and down 'like a yo-yo'
Researchers have compiled the first global set of observations of flow within the Earth's mantle -- the layer between the crust and the core -- and found that it is moving much faster than has been predicted. (2016-05-09)

Seismologists detect a sunken slab of ocean floor deep in the Earth
Halfway to the center of the Earth, at the boundary between the core and the mantle, lies a massive folded slab of rock that once formed the ocean floor and sank beneath North America some 50 million years ago. A team of seismologists has detected the slab by analyzing seismic waves reflected from the deepest layer of the mantle beneath an area off the west coast of Central America. (2006-05-17)

Birth of Earth's continents
New research led by a University of Calgary geophysicist provides strong evidence against continent formation above a hot mantle plume, similar to an environment that presently exists beneath the Hawaiian Islands. (2013-09-16)

Distinct slab interfaces found within mantle transition zone
Prof. CHEN Qifu's group from the Institute of Geology and Geophysics, Chinese Academy of Sciences (IGGCAS) and their collaborators observed two distinct seismic discontinuities within the mantle transition zone (~410 km to 660 km) beneath the western Pacific. (2020-11-09)

There and back again: Mantle xenon has a story to tell
Volatiles -- such as water, carbon dioxide and the noble gases -- come out of the earth's interior through volcanism and may be injected into the mantle from the atmosphere, a pair of processes called mantle degassing and regassing. The exchange controls the habitability of the planet. This transport could not have begun much before 2.5 billion years ago, according to new research that also establishes a range of dates during which the Earth shifted to a net regassing regime. (2018-08-08)

Deep earth recycling of the oceanic floor
Scientists have recreated the extreme conditions 600 to 2900 km below the Earth's surface to investigate the melting of basalt in the oceanic tectonic plates. They exposed microscopic pieces of rock to these extreme pressures and temperatures while simultaneously studying their structure with the European Synchrotron Radiation Facility's extremely powerful X-ray beam. The results show basalt produced on the ocean floor has a melting temperature lower than the peridotite which forms the Earth's mantle. (2014-05-22)

Ancient asteroid impact exposes the moon's interior
A large basin on the moon has revealed that its interior is made of a different mineral than Earth's interior, contradicting the theory that the interior of the planets look mostly the same. (2017-10-10)

Geochemists measure new composition of Earth's mantle
Geochemists have investigated the volcanic rocks that build up the Portuguese island group of the Azores in order to gather new information about the compositional evolution of the Earth's interior. The results suggest that a larger amount of the Earth's mantle has melted and formed the Earth's crust than previously thought. The study has been published in the journal ''Nature Geoscience''. (2019-09-16)

Shell game: Understanding gene patterns behind mollusk diversity
Bernard Degnan et al. have begun to peel back the complex gene networks that control the secretions from the outer layer of cells on the mantle. In the largest study ever performed, the authors generated a transcriptome (the complete gene expression network) from 11 different bivalves and gastropods. From their detailed analyses, surprisingly, they found no unique model or common molecular toolkit behind making every shell. Rather, within the organic layer of a shell, each species has seemed to evolve its own shell 'secretome.' (2017-01-03)

Shocked meteorites provide clues to Earth's lower mantle
An international team of scientists have completed a complex analysis of a ''shocked meteorite'' and gained new insight into Earth's lower mantle. (2020-01-10)

Mantle Cell Lymphoma Consortium Scientific Workshop
A research report, from the Sixth Annual Mantle Cell Lymphoma Consortium Scientific Workshop, detailing each oral and poster presentation as well as the roundtable discussions is now available. (2009-06-24)

Would a deep-Earth water cycle change our understanding of planetary evolution?
Every school child learns about the water cycle -- evaporation, condensation, precipitation, and collection. But what if there were a deep Earth component of this process happening on geologic timescales that makes our planet ideal for sustaining life as we know it? (2019-12-16)

Is old rock really as 'solid as a rock'?
The team of geoscientists form Germany and the US discovered that the craton below the North American continent is extremely deformed. (2015-09-07)

Scientists recreate extreme conditions deep in Earth's interior
A new study sheds light on the inner workings of the Earth's deep interior by uncovering the structure of a substance called post-perovskite, which makes up most of the core-mantle 1,800 milles below the surface. Understanding how this region behaves has important implications for discovering how the planet's internal heating and cooling processes work, and gives clues about the longstanding mystery of why certain seismic waves travel more quickly through this layer. (2010-09-23)

New Curtin research uncovers the two 'faces' of the Earth
New Curtin University-led research has uncovered how rocks sourced from the Earth's mantle are linked to the formation and breakup of supercontinents and super oceans over the past 700 million years, suggesting that the Earth is made up of two distinct 'faces'. (2020-06-30)

Patterns on tropical marine mollusk shell mirror gene expression patterns
Scientists have identified a group of genes that control the formation of shapes and color patterns on the shell of the tropical marine mollusk referred to as (2006-11-21)

Reservoirs of ancient lava shaped Earth
Geological history has periodically featured giant lava eruptions that coat large swaths of land or ocean floor with basaltic lava, which hardens into rock formations called flood basalt. New research proposes that the remnants of six of the largest volcanic events of the past 250 million years contain traces of the ancient Earth's primitive mantle -- which existed before the largely differentiated mantle of today -- offering clues to the geochemical history of the planet. Their work is published online July 27 by Nature. (2011-07-27)

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