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900-mile mantle pipeline connects Galápagos to Panama(图)     地幔管道  加拉帕戈斯群岛  巴拿马       font style='font-size:12px;'> 2023/5/23
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 ...
Oxygen first accumulated in the Earth's atmosphere about 2.4 billion years ago, during the Great Oxidation Event. A long-standing puzzle has been that geologic clues suggest early bacteria were photos...
近日,中国地质大学地球科学学院刘勇胜教授团队在国际地学领域顶级期刊《Geology》发表了题为《浅部克拉通地幔存在太古代高放射性成因铅》的学术论文,阐释了地幔高非放射性成因铅的起源及相应的深部地球动力学过程,建立了早元古代大氧化事件(大约23~24亿年)与地球铅同位素组成之间的重要联系。论文通讯作者为刘勇胜教授,论文第一作者为张军波博士。 自然界中铅(Pb)以四种稳定同位素存在,其中仅一种为非放...
New research lends credence to an unorthodox retelling of the story of early Earth that was first proposed by a geophysicist at the Scripps Institution of Oceanography in La Jolla, Californi...
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 new view, Earth's mantle looks like a painting(图)     Earth  mantle  painting       font style='font-size:12px;'> 2019/10/30
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...
The special seismic tectonic environment and frequent seismicity in the southeastern margin of the Qinghai–Tibet Plateau show that this area is an ideal location to study the present tectonic movement...
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 ...
Geochemical studies of shergottites (Martian basalts) based on Rb-Sr, Sm-Nd, and Lu-Hf isotopic systematics have provided clues to understanding the geochemical evolution of the Martian mantle and id...
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...
or the first time a sharp, three-dimensional scan of Earth’s interior that conclusively connects plumes of hot rock rising through the mantle with surface hotspots that generate volcanic island chains...
We measure the inter-station Rayleigh and Love wave phase velocities across the northwestern Indian Peninsular shield (NW-IP) through crosscorrelation and invert these velocities to evaluate the und...
We measure the inter-station Rayleigh and Love wave phase velocities across the northwestern Indian Peninsular shield (NW-IP) through cross-correlation and invert these velocities to evaluate the unde...
From the Mantle to Microbes: The Lost City Hydrothermal Field     Lost City Hydrothermal Field  Microbes       font style='font-size:12px;'> 2015/7/28
For over two decades, explorers of the deep ocean have been enthralled by volcanically driven black smoker hydrothermal systems hosting organisms that live under some of the most extreme conditions on...
Knowledge of the composition of oceanic crust is critical for calculating the fluxes of mass, heat, and volatiles from Earth's interior to its crust, oceans, and atmosphere. In the great debate over c...

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