The emergence of low-frequency, high-amplitude, quasi-periodic (∼ 100-kyr) glacial
variability during the middle Pleistocene in the absence of any significant change in orbital …

The distribution of major phosphate deposits in the Precambrian sedimentary rock record is
restricted to periods that witnessed global biogeochemical changes, but the cause of this …

Strontium Isotope Stratigraphy | Application of Modern Stratigraphic TechniquesTheory and
Case Histories | GeoScienceWorld Books | GeoScienceWorld Skip to Main Content …

Construction and assembly of the Geologic Time Scale involves:(a) constructing a relative
(chronostratigraphic) standard scale for key periods in the Earth's rock record;(b) identifying …

The third edition of Radiogenic Isotope Geology examines revolutionary changes in
geochemical thinking that have occurred over the past fifteen years. Extinct-nuclide studies …

This paper presents definitions of concepts related to speciation of elements, more
particularly speciation analysis and chemical species. Fractionation is distinguished from …

Concentrations of major ions and Sr, and Sr isotopic compositions of two major river systems
(Wujiang River and Yuanjiang River) in karst-dominated regions, and during winter were …

There were three negative seawater strontium-isotope excursions (shifts to lower^ 87^ Sr/^
86^ Sr values) during the Jurassic and Cretaceous that were of relatively short duration (5 …

Carbonate rocks and natural waters exhibit a wide range in the concentration and isotopic
composition of strontium. This wide range and the quantifiable covariation of these …

Over the past decade the marine osmium isotope record has been developed into a new
tracer in palaeoceanographic research. Several analytical developments, particularly in the …