A5053926339- Pleistocene-Era Hominins and Archaeology
- Geology and Paleoclimatology Research
- Archaeology and ancient environmental studies
- Coral and Marine Ecosystems Studies
- Isotope Analysis in Ecology
- Archaeological and Geological Studies
- Ocean Acidification Effects and Responses
- Paleontology and Stratigraphy of Fossils
- Nuclear Physics and Applications
- Marine and fisheries research
- Archaeological and Historical Studies
- Geochemistry and Geologic Mapping
- Karst Systems and Hydrogeology
- Geological formations and processes
- Pacific and Southeast Asian Studies
- Marine and coastal ecosystems
- Marine and coastal plant biology
- Heavy metals in environment
- Primate Behavior and Ecology
- Geological and Geophysical Studies
- Ion-surface interactions and analysis
- Medieval Architecture and Archaeology
- Landslides and related hazards
- French Urban and Social Studies
- Cultural Heritage Materials Analysis
University of Southampton
2015-2025
National Oceanography Centre
2019-2025
Universidad Complutense de Madrid
2020
University of Bristol
2012-2015
The extent and nature of symbolic behavior among Neandertals are obscure. Although evidence for Neandertal body ornamentation has been proposed, all cave painting attributed to modern humans. Here we present dating results three sites in Spain that show art emerged Iberia substantially earlier than previously thought. Uranium-thorium (U-Th) dates on carbonate crusts overlying paintings provide minimum ages a red linear motif La Pasiega (Cantabria), hand stencil Maltravieso (Extremadura),...
The Paleocene-Eocene Thermal Maximum (PETM) is recognized by a major negative carbon isotope (δ 13 C) excursion (CIE) signifying an injection of isotopically light into exogenic reservoirs, the mass, source, and tempo which continue to be debated. Evidence transient precursor release(s) has been identified in few localities, although it remains equivocal whether there global signal. Here, we present foraminiferal δ C records from marine continental margin section, reveal 1.0 1.5‰ pre-onset...
Abstract Boron isotopic and elemental analysis of coral aragonite can give important insights into the calcification strategies employed in skeletal construction. Traditional methods have limited spatial (and thus temporal) resolution, hindering attempts to unravel heterogeneity. Laser ablation mass spectrometry allows a much more refined view, here we employ these techniques explore boron isotope co-varying ratios tropical Siderastrea siderea . We generate two-dimensional maps carbonate...
Serpentinised mantle rocks reflect the cumulative sum of multiple alteration events, but to date, identifying distinct serpentinisation episodes has remained challenging due limited knowledge spatial distribution tracers fluid-rock exchange.Here we present novel high resolution (∼10 μm) boron, nickel, calcium, and lithium concentration maps combined with in situ boron isotope analyses strongly serpentinised peridotites from Troodos ophiolite, Cyprus.Our indicate heterogenous concentrations...
This paper reports a high-resolution isotopic study of medieval horse mobility, revealing their origins and in-life mobility both regionally internationally. The animals were found in an unusual cemetery site within the City Westminster, London, England. Enamel strontium, oxygen, carbon isotope analysis 15 individuals provides information about likely place birth, diet, during first approximately 5 years life. Results show that at least seven horses originated outside Britain relatively cold...
Abstract The chemical and isotopic composition of stony coral skeletons form an important archive past climate. However, these reconstructions are largely based on empirical relationships often complicated by “vital effects” arising from uncertain physiological processes the holobiont. deep-sea corals, such as Desmophyllum dianthus , characterised micron-scale or larger geochemical heterogeneity associated with: (1) centres calcification (COCs) where nucleation new skeleton begins, (2)...
The accuracy of boron isotope analysis by laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS), particularly when the bias correction utilises non-matrix-matched reference materials, is compromised matrix- and mass-load induced biases an interference from scattered Ca Ar ions which can induce in excess 20‰. Here we explore first application to situ Thermo Scientific Neoma MS/MS spectrometer, combines a traditional MC-ICP spectrometer with...
Lead isotope analyses of 50 Irish Chalcolithic and Early Bronze Age gold artefacts favour a source in southern Ireland. However when combined with major element analysis, the are not consistent any deposit analysed to date. Understanding lead signatures ore deposits within study region allows informed inferences be drawn regarding likelihood that an unanalysed was exploited past. If is assumed, then most likely have originated from hosted by Old Red Sandstone Variscan field south-west...
Geomorphological and biological archives of relative sea-level change in the western North Atlantic-Caribbean region following Last Glacial Maximum have traditionally supported hypothesis a punctuated rise towards present sea level. Such records, however, are often at insufficient resolution to discern centennial-scale changes. In caves where water table is closely controlled by level, active periods speleothem growth constraining maximum used combination with marine overgrowths minimum...
Rationale Boron isotope analysis of marine carbonates by laser ablation multi‐collector inductively coupled plasma mass spectrometry (LA‐MC‐ICP‐MS) offers the potential for rapid sample throughput, and means to examine micron‐scale variations in δ 11 B signatures fossil skeletons shells/tests organisms. Existing studies demonstrate an acceptable level reproducibility is achievable, but also typically show a accuracy outside limits required most applications. Here we investigate matrix...
A new approach is presented for the analysis of lead isotopes in gold using solution and laser ablation multi-collector inductively-coupled plasma mass-spectrometry (MC-ICP-MS). Repeat analyses two reference materials (RAuGP3: 34.1 ± 0.5 ppm Pb RAuGP5: 129 4 Pb, from SPEX CertiPrep Ltd) yield an external reproducibility <150 207Pb/206Pb 208Pb/206Pb <250 206Pb/204Pb, 207Pb/204Pb 208Pb/204Pb after separation a two-stage ion exchange chromatography methodology. External <600 achieved analyses....
The impact of warming, acidification, and deoxygenation on deep-sea environments is a growing concern. Historical records are sparse, particularly at high latitudes, making climate change projections challenging. Indirect proxies, such as trace element composition marine carbonates, coral skeletons, can offer an alternative method to fill data gaps but have not been realised. Here, using Laser Ablation Triple-Quadrupole Inductively Coupled Plasma Mass Spectrometry (LA-QQQ-ICP-MS), we...
Abstract Coral reef ecosystems are delicately balanced and thus prone to disruption by stressors such as storms, disease, climate variability natural disasters. Most tropical coral populations worldwide now in rapid decline owing additional anthropogenic pressures, global warming, ocean acidification a variety of local stressors. One problem is the addition excess sediment nutrients flux reefs from increased soil erosion land use changes. Here we present century‐long Ba/Ca records two...
Abstract Reindeer are part of the faunal suite that dominated central Europe during last glacial cycle. Their importance to Late Gravettian hunters as prey and a source raw materials (hide, bone, antler) is well attested, however context reindeer predation lesser understood. This paper presents an investigation human predator-prey interactions at kill-butchery site Lubná VI, Czech Republic. We reconstruct seasonal mobility ( 87 Sr/ 86 Sr, δ 18 O), diet (δ 13 C, 15 N) season death (dental...
Biofilms on placer gold (Au)-particle surfaces drive Au solubilization and re-concentration thereby progressively transforming the particles. Gold induces Au-toxicity; however, Au-detoxifying community members ameliorates Au-toxicity by precipitating soluble to metallic Au. We hypothesize that Au-dissolution (precipitation) place selective pressures associated microbial communities, leading compositional changes subsequent Au-particle transformation. analyzed Au-particles from eight United...
Abstract Variation among individuals within species is a biological precondition for co‐existence. Traditional geochemical analysis based on bulk averages facilitates rapid data gathering but necessarily means the loss of large amounts potentially crucial information into variability given sample. As sensitivity improves, it now feasible to build sufficiently powerful datasets investigate paleoclimatic variation at level individual specimens. Here, we and morphological sensu stricto, lato...