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Lead isotopes are powerful tracers in environmental forensics due to their unique geochemical signatures. Lead has four common isotopes: 204Pb, 206Pb, 207Pb, and 208Pb, the latter 3 are the product of a radioactive decay series while 204Pb is primordial. Lead stable isotopes are reported as a ratio to 204Pb.
Boron’s stable isotopes, as represented by δ¹¹B, have emerged as a powerful tool
in paleoceanography and climate science.
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The study of isotopes in soils has become an essential tool in understanding both geological time scales and contemporary environmental processes. By utilizing various isotopes, researchers can glean information about such varied topics as soil formation, nutrient cycling, and past climate conditions. This article focuses on prominent isotopic systems employed in soil studies, including radiocarbon […]
The analysis of archaeological artifacts through isotopic techniques has become a cornerstone of modern archaeological research. These methods allow for the investigation of the origins, movements, and interactions of ancient materials, thereby illuminating the complex relationships between humans and their environments over millennia. By employing various isotopic signatures, researchers can glean insights into trade networks, […]
Water’s continuous movement and flow of water across landscapes contribute
to and provide important clues into the intricacies of biogeochemical cycles
at various spatial and temporal scales.
Limestone is a granular sedimentary rock predominantly composed of
calcium carbonate (CaCO3), which commonly forms along shallow ocean
water beds from fossilized shells and exoskeletons of marine organisms.
Gypsum is a relatively soft and common mineral made up of hydrous
calcium sulfate (CaSO4-2H2O). Whilst pure gypsum crystals are transparent
(often with a pearly or vitreous luster), they can appear opaque and colored
due to the inclusion of other materials (e.g. sand).
Strontium dating (as enabled by the 87Sr/86Sr ratio of marine carbonates) can be used to date various marine samples based on the premise that the mixing of oceanic strontium occurs relatively rapidly through time compared to the residence time of oceanic strontium.