搜索结果: 1-15 共查到“地球物理学 the mantle”相关记录33条 . 查询时间(0.078 秒)
中国地质大学科学技术发展院张军波，刘勇胜* 等，地球科学学院. Geology, Available online 27 March 2020，Archean, highly unradiogenic lead in shallow cratonic mantle
地幔高非；放射性；铅；起源；地球；动力学
2021/10/15
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...
oint Inversion of the 3D P Wave Velocity Structure of the Crust and Upper Mantle under the Southeastern Margin of the Tibetan Plateau Using Regional Earthquake and Teleseismic Data
3D P-wave velocity structure China seismic array detection Panxi region Chuan-Dian Block Daliangshan Block southeastern margin of Qinghai–Tibet Plateau
2018/4/10
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...
New constraints on shergottite petrogenesis from analysis of Pb isotopic compositional space: Implications for mantle heterogeneity and crustal assimilation on Mars
shergottite Pb isotopes Martian geochemistry crustal assimilation mantle heterogeneity
2017/4/10
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...
CT scan of Earth links deep mantle plumes with volcanic hotspots（图）
CT scan Earth links deep mantle plumes volcanic hotspots
2015/9/8
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...
Crust and upper mantle velocity structure of the northwestern Indian Peninsular Shield from inter-station phase velocities of Rayleigh and Love waves
mantle velocity Indian Peninsular Shield
2015/8/17
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...
Crust and upper mantle velocity structure of the northwestern Indian Peninsular Shield from inter-station phase velocities of Rayleigh and Love waves
Cratons Surface waves Lithosphere-Asthenosphere boundary Indian Peninsular shield
2015/8/14
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...
Traces of the crustal units and the upper-mantle structure in the southwestern part of the East European Craton
Earthquake experiment the P wave remote earthquake faults three-dimensional crustal model
2015/1/6
The presented study is a part of the passive seismic experiment PASSEQ 2006–2008, which took place around the Trans-European Suture Zone (TESZ) from May 2006 to June 2008. The data set of 4195 manuall...
Mantle lithosphere transition from the East European Craton to the Variscan Bohemian Massif imaged by shear-wave splitting
Seismic shear wave splitting focused on the structure of the upper mantle
2015/1/6
We analyse splitting of teleseismic shear waves recorded during the PASSEQ passive experiment (2006–2008) focused on the upper mantle structure across and around the Trans-European Suture Zone (TESZ)....
Magnetic signature of large exhumed mantle domains of the Southwest Indian Ridge – results from a deep-tow geophysical survey over 0 to 11 Ma old seafloor
Magnetic signature large exhumed mantle domains the Southwest Indian Ridge deep-tow geophysical survey 0 to 11 Ma old seafloor
2015/1/6
We investigate the magnetic signature of ultramafic seafloor in the eastern part of the Southwest Indian Ridge (SWIR). There, detachment faulting, continuous over 11 Myr, exhumed large areas of mantle...
Seismic structure of the lithosphere and upper mantle beneath the ocean islands near mid-oceanic ridges
Seismic structure the lithosphere and upper mantle beneath ocean islands near mid-oceanic ridges
2015/1/6
Deciphering the seismic character of the young lithosphere near mid-oceanic ridges (MORs) is a challenging endeavor. In this study, we determine the seismic structure of the oceanic plate near the MOR...
Lithosphere and upper-mantle structure of the southern Baltic Sea estimated from modelling relative sea-level data with glacial isostatic adjustment
Lithosphere and upper-mantle structure southern Baltic Sea estimated modelling relative sea-level data glacial isostatic adjustment
2015/1/6
During the last glacial maximum, a large ice sheet covered Scandinavia, which depressed the earth's surface by several 100 m. In northern central Europe, mass redistribution in the upper mantle led to...
A new model of the upper mantle structure beneath the western rim of the East European Craton
the upper mantle structure beneath the western rim the East European Craton
2015/1/6
We present a new 1-D P wave seismic velocity model (called MP1-SUW) of the upper mantle structure beneath the western rim of the East European Craton (EEC) based on the analysis of the earthquakes rec...
The sensitivity of GNSS measurements in Fennoscandia to distinct three-dimensional upper-mantle structures
GNSS measurements Fennoscandia three-dimensional upper-mantle structures
2015/1/6
The sensitivity of global navigation satellite system (GNSS) measurements in Fennoscandia to nearby viscosity variations in the upper mantle is investigated using a 3-D finite element model of glacial...
Experimental deformation and recrystallization of olivine – processes and timescales of damage healing during postseismic relaxation at mantle depths
Experimental deformation recrystallization of olivine
2015/1/5
. Experiments comprising sequences of deformation (at 300 or 600◦C) and annealing at varying temperature (700 to 1100◦C), time (up to 144 h) and stress (up
to 1.5 GPa) were carried out in...
The reconciliation of mantle chemistry with the structure of the mantle inferred from geophysics and dynamical modelling has been a long-standing problem. This paper reviews three main aspects. First,...