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Partly melted rocks under Earth’s surface offer insights into what makes plate tectonics possible（图）
地球表面 板块构造 构造地质学
2023/6/26
Using seismic waves, scientists detect widespread partially molten rock hidden under the Earth’s tectonic plates in a new way, a step in settling a long-held geological debate that has big implication...
中国地质大学科学技术发展院昌佳(博士生)，李建威等资源学院GPMR国家重点实验室Geochimica et Cosmochimica Acta，2018. Formation and evolution of multistage magmatic-hydrothermal fluids at the Yulong porphyry Cu-Mo deposit, eastern Tibet: Insights from LA-ICP-MS analysis of fluid inclusions（图）
西藏；东缘；玉龙；超大型；斑岩；铜矿床；岩浆；热液流体
2021/10/21
近日，国际地球化学顶级期刊《Geochimica et Cosmochimica Acta》刊发了中国地质大学有关西藏东缘玉龙超大型斑岩铜矿床多期次岩浆热液流体形成和演化的研究成果。资源学院和GPMR国家重点实验室博士生昌佳为本文第一作者，李建威教授为通讯作者。
LSU Researchers Discover Minerals in Volcanic Rock that May Offer New Insights into the First 1.5 Billion Years of Earth's Evolution（图）
LSU Researchers Minerals Volcanic Rock First 1.5 Billion Years Earth's Evolution
2017/11/23
The first 1.5 billion years of Earth’s evolution is subject to considerable uncertainty due to the lack of any significant rock record prior to four billion years ago and a very limited record until a...
中国地质大学科学技术发展院文广（博士生），李建威等资源学院 Geochimica et Cosmochimica Acta, 2017. Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications for magnetite classification schemes: Insights from theHandan-Xingtai iron district, North China
李建威
2021/10/21
近日，中国地质大学资源学院和地质过程与矿产资源国家重点实验室李建威教授团队在国际地球化学顶级期刊发表题为《Hydrothermal reequilibration of igneous magnetite in altered granitic plutons and its implications formagnetite classification schemes: Insights fr...
UW Scientists Gain Supervolcano Insights from Wyoming Granite
UW Scientists Gain Supervolcano Wyoming Granite
2016/6/12
Geophysical monitoring of the ground above active supervolcanoes shows that it rises and falls as magma moves beneath the surface of the Earth. Silica-rich magmas -- like those in the Yellowstone regi...
New Insights into the Emplacement Dynamics of Volcanic Island Landslides
Volcanic Island Landslides Emplacement Dynamics
2015/7/17
Volcanic islands form the highest topographic structures on Earth and are the sites of some of the planet's largest landslides. These landslides can rapidly mobilize hundreds of cubic kilometers of ro...
Eruption of South Sarigan Seamount, Northern Mariana Islands: Insights into Hazards from Submarine Volcanic Eruptions
South Sarigan Seamount Northern Mariana Islands:
2015/7/17
The eruption of South Sarigan Seamount in the southern Mariana arc in May 2010 is a reminder of how little we know about the hazards associated with submarine explosive eruptions or how to predict the...
Southern Exposure: New Paleoclimate Insights From Southern Ocean and Antarctic Margin Sediments
Southern Ocean Antarctic Margin Sediments
2015/7/15
Much of what is known about the evolution of Antarctica's cryosphere in the geologic past is derived from ice-distal deep-sea sedimentary records. Recent advances in drilling technology and climate pr...
Thermochemical reduction of magnesium sulfate by natural gas: Insights from an experimental study
natural gas thermochemical sulfate reduction (TSR) carbon isotope fractionation
2017/4/12
Thermochemical reduction of MgSO4 by natural gas was carried out in the presence of water. Chemical and carbon
isotopic variations were characterized with microcoulometry, gas chromatography, FT-IR, ...
Diamond prospectivity of Mesoproterozoic lamproites from the Krishna valley, eastern Dharwar craton, southern India: Insights from whole-rock geochemistry
diamond lamproite Krishna valley Dharwar craton
2017/4/12
Diamond prospectivity of Mesoproterozoic lamproites in the Krishna valley at the northern and north-eastern margin
of the Cuddapah Basin, southern India, is a matter of significance since several his...
Structural Fe3+ in Natural Kaolinites: New Insights from Electron Paramagnetic Resonance Spectra Fitting at X and Q-Band Frequencies
Dickite Disorder EPR Fe3+ Kaolinite
2011/12/7
Abstract: Structural Fe3+ in kaolinites and dickites covering a broad range of disorder was investigated using electron paramagnetic resonance (EPR) spectroscopy at both the X and Q-band frequencies. ...
Comparison of conventional and garnet-aluminosilicate-quartz O isotope thermometry: Insights for mineral equilibration in metamorphic rocks
Comparison of conventional garnet-aluminosilicate-quartz O mineral equilibration metamorphic rocks
2012/4/1
Oxygen isotope thermometry based on fractionations among quartz, garnet, kyanite, silliman-
ite, and potassium feldspar in amphibolite to granulite facies schists and gneisses was compared to
thermo...
New insights into organic-mineral particles: composition, properties and models of molecular structure
Analytical pyrolysis Computational chemistry Molecular modelling Soil organic-mineral particles Xenobiotic complexes
2011/11/8
Organic-mineral soil particles are formed and altered as a result of pedogenic processes and anthropogenic impacts on soils. They can be isolated from
bulk soil samples by physical disaggregation fol...
Diogenites as asteroidal cumulates: Insights from spinel chemistry
asteroidal cumulates spinel chemistry orthopyroxene
2012/3/31
The chemical composition of spinel was determined for a suite of 19 diogenites (orthopyroxenites)
thought to be from asteroid 4 Vesta. Previous studies (Fowler et al. 1994, 1995) of orthopyroxene
de...
Oriented attachment and growth, twinning, polytypism, and formation of metastable phases: Insights from nanocrystalline TiO2
Oriented attachment growth twinning polytypism formation of metastable phases Insights nanocrystalline TiO2
2012/4/1
Atomic-resolution transmission electron micrographs show that nanocrystalline TiO2 coarsens by oriented attachment and growth under hydrothermal conditions. In addition to forming homogeneous single c...