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Global silicate weathering and CO2 consumption rates deduced from the chemistry of large rivers
Abstract The main problem associated with the study of silicate weathering using river dissolved load is that the main control of solute chemistry is lithology and that all rivers are influenced byExpand
Basalt weathering laws and the impact of basalt weathering on the global carbon cycle
Abstract This study attempts to characterise the chemical weathering of basalts and to quantify the flux of carbon transferred from the atmosphere to the ocean during this major process at theExpand
The chemical composition of the Earth
Abstract The bulk composition of the Earth and the composition of the mantle and core are calculated using the ratios of major and trace elements. The ratios of elements which do not enter the coreExpand
Structure and evolution of the Himalaya–Tibet orogenic belt
The 1981 French–Chinese expedition to Tibet focused on the Lhasa block, extending earlier coverage 400 km north of the Tsangpo suture. The Lhasa block stood between 10 and 15° N latitude over most ofExpand
Geochemistry of large river suspended sediments: silicate weathering or recycling tracer?
This study focuses on the major and trace element composition of suspended sediments transported by the world’s largest rivers. Its main purpose is to answer the following question: is the degree ofExpand
Chemical and physical denudation in the Amazon River Basin
We present major and trace element data on the suspended and dissolved phases of the Amazon River and its main tributaries. The Sr isotopic composition of the dissolved load is also reported. SpecialExpand
The global control of silicate weathering rates and the coupling with physical erosion: new insights from rivers of the Canadian Shield
Abstract The chemical evolution of the surface of the Earth is controlled by the interaction of rainwaters, the atmosphere and the continental crust. That is the main reason why the knowledge of theExpand
Widespread 54Cr Heterogeneity in the Inner Solar System
Short-lived radionuclides can be used as high-resolution chronometers for establishing timescales of planetary formation provided that they were homogeneously distributed in the accretion disk.Expand
The influence of rivers on marine boron isotopes and implications for reconstructing past ocean pH
Estimated isotope compositions of boron in sea water show a remarkable consistency with records of δ11B in foraminiferal carbonates, suggesting that foraminifera δ 11B records may in part reflect changes in the marine borons isotope budget rather than changes in ocean pH over the Cenozoic era. Expand
The age of the Earth
Forty years ago, Patterson in his pioneering work on lead isotopes defined the age of the Earth and of the meteorites with 4.55 Ga. We reconsider the question of the age of the Earth and its relationExpand