搜索结果: 1-15 共查到“地质学 mantle”相关记录29条 . 查询时间(0.124 秒)
A cold spring in Panama shouldn’t show strong signs of deep volcanic sources. But after researchers found one anomaly, they discovered several other sites with similarly unique signatures, stretching ...
Shocked meteorites provide clues to Earth's lower mantle（图）
Shocked meteorites provide clues Earth lower mantle
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2020/2/20
Deep below Earth's surface lies a thick rocky layer called the mantle, which makes up the majority of our planet's volume. While Earth's mantle is too deep for humans to observe directly, certain mete...
In grade-school science textbooks, Earth's mantle is usually shown in a yellow-to-orange gradient, a nebulously defined layer between the crust and the core.To geologists, the mantle is much more than...
ASU geoscientists explain puzzling pockets of rock deep in Earth's mantle（图）
ASU geoscientists puzzling pockets rock deep Earth's mantle
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2017/9/1
A team led by geoscientists from Arizona State University and Michigan State University has used computer modeling to explain how pockets of mushy rock accumulate at the boundary between Earth's core ...
Heat and mass transfer from the mantle: heat flow and He-isotope constraints
heat flow helium isotope ratio geothermal energy mass transfer
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2015/9/10
Terrestrial heat flow density, q, is inversely correlated with the age, t, of tectono-magmatic activity in the Earth's
crust (Polyak and Smirnov, 1966; etc.). «Heat flow-age dependence» ind...
Regional mantle heterogeneity regulates melt production along the Réunion hotspot-influenced Central Indian Ridge
ridge-hotspot interaction MORB geochemistry crustal production upper mantle heterogeneity
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2017/4/11
To ascertain factors controlling melt production along a typical distal, ‘hotspot-interacting’ mid-ocean ridge, we investigated
the extent and distribution of both plume-related and plume-unrelated b...
International Workshop on: Ophiolites, Mantle Processes and Related Ore Deposits
International Workshop on Ophiolites Mantle Processes Related Ore Deposits
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2014/3/5
International Workshop on: Ophiolites, Mantle Processes and Related Ore Deposits。
Petrology and geochemistry of the back-arc lithospheric mantle beneath eastern Payunia (La Pampa, Argentina): Evidence from Agua Poca peridotite xenoliths
gmantle xenoliths fractional melting mantle metasomatism depleted mantle reservoir Argentinatagonia
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2017/4/11
This paper presents the results of new petrochemical studies carried out on mantle xenoliths hosted in Pleistocene
basaltic rocks from the Agua Poca volcano in central-western Argentina. Mantle xenol...
East-west mantle geochemical hemispheres constrained from Independent Component Analysis of basalt isotopic compositions
mantle isotope domain basalt supercontinent
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2017/4/11
In order to decipher the mantle geochemical heterogeneity that reflects material differentiation and circulation within
the Earth, we examined mid-ocean ridge basalts (MORB), ocean island basalts (OI...
Platinum-Group Minerals (PGM) and Other Solid Inclusions in the Elbistan-Kahramanmaraş Mantle-hosted Ophiolitic Chromitites, South-eastern Turkey: Their Petrogenetic Significance
ophiolitic chromitite platinum-group minerals base metal sulphides Kahramanmaraş Turkey
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2009/7/7
The Elbistan-Kahramanmaraş podiform ophiolitic chromitites, in southeastern Turkey, contain abundant primary inclusions of platinum-group minerals (PGM), base-metals sulphides (BMS) and silicates...
Elemental and Sr-Nd-Pb isotopic compositions of late Cenozoic Abaga basalts, Inner Mongolia: Implications for petrogenesis and mantle process
geochronology geochemistry Abaga basalts late Cenozoic Inner Mongolia
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2017/8/10
The Abaga volcanic field is one of the largest and least known areas of late Cenozoic intraplate igneous activities in eastern China. Twenty-seven Abaga basaltic rocks were analyzed for major and trac...
238U-230Th radioactive disequilibrium in the northern Izu arc: (230Th/232Th) in the sub-arc mantle
U-series disequilibria Izu arc subduction isotope geochemistry trace element geochemistry sediment
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2017/8/10
Major and trace element abundances, Sr and Nd isotopic ratios, and 238U-230Th radioactive disequilibria have been analyzed for samples from five volcanoes, Oshima, Miyakejima, Niijima, Teishi Knoll an...
Trace element and isotopic evidence for temporal changes of the mantle sources in the South Shetland Islands, Antarctica
trace elements Sr-Nd-Pb isotopes subduction component heterogeneous mantle South Shetland Islands
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2017/8/10
We present Sr-Nd-Pb isotope data from the Paleocene-Eocene volcanic rocks in King George Island, South Shetland Islands, West Antarctica. The initial isotopic ratios of the analyzed samples display li...
专著信息
书名
Petrology, mineralogy and geochemistry of the Emeishan continental flood basalts, SW China: evidence for activity of mantle plume
语种
英文
撰写或编译
作者
Zhang Zhaochong,Hao Yanli,Wang Fusheng,John J. ...
专著信息
书名
Petrology, Mineralogy, and Geochemistry of the Emeishan Continental Flood Basalts, Southwestern China: evidence for activity of mantle plume.
语种
英文
撰写或编译
作者
Zhang Zhaochong,Wang Fusheng,John J...