At the Earth's surface, calcium (Ca) is a critical element at a variety of scales: it is soluble in
natural waters, a biological nutrient, and a major constituent of the dominant mineral sink for …

Study of the isotopic variations of calcium is of interest because Ca is important in
geochemical and biochemical processes, and is one of few major cations in rocks and …

When rock is converted to weathering products, the involved processes can be fingerprinted
using the stable isotope ratios of metals (for example Li, Mg, Ca, Fe, Sr) and metalloids (B …

We have measured the magnesium (Mg) isotope ratios in 45 rivers including 16 of the
largest rivers in the world, covering a range of geologic, tectonic and climatic drainage basin …

The calcium isotopic compositions (δ44Ca) of 30 high-purity nannofossil ooze and chalk
and 7 pore fluid samples from ODP Site 807A (Ontong Java Plateau) are used in …

Analysis of river water, rock, travertine and soil from the high altitude, negligible vegetation
setting of the Southern Tibetan Plateau demonstrates that Ca and Mg isotope ratios are …

Calcium-isotope ratios (δ44/42Ca) were measured in carbonate-rich sedimentary sections
deposited during Oceanic Anoxic Events 1a (Early Aptian) and 2 (Cenomanian–Turonian) …

A total of 280 brachiopods of Ordovician to Cretaceous age, complemented by published
data from belemnites and planktonic foraminifera, are used to reconstruct the evolution of …

In rivers draining the Himalaya-Tibetan-Plateau region, the 26Mg/24Mg ratio has a range of
2‰ and the 44Ca/42Ca ratio has a range of 0.6‰. The average δ26Mg values of tributaries …

Enhanced analytical capabilities and separation techniques, improved detection limits, and
accessibility of instrumentation have led to massive strides in the use of isotopes to assess …