Results 111 to 120 of about 110,450 (295)

Artefacts in Sr isotope records [PDF]

Nature, 1995
Steven C. Clemens, L. Peter Gromet, John W. Farrell   +2 more
openaire   +1 more source

Investigating relationships among strontium, barium, and seasonality in wild baboons

Archaeometry, EarlyView.
Abstract Geochemical profiles of Australopithecus africanus and baboon teeth show fluctuating trace elements, possibly reflecting seasonal diets. Here we use laser ablation–inductively coupled plasma–mass spectrometric measurements of calcium‐normalized strontium and barium ratios (Sr/Ca and Ba/Ca) and ion microprobe analyses of oxygen isotopes (δ18O ...
Maya Bharatiya, Christine Austin, Manish Arora, Janaína N. Ávila, Esme K. Beamish, Wendy Dirks, Daniel R. Green, Nicole D. Leonard, W. Scott McGraw, Larissa Swedell, Ian S. Williams, Jian‐xin Zhao, Tanya M. Smith   +12 more
wiley   +1 more source

Repumping and spectroscopy of laser-cooled Sr atoms using the (5s5p)3P2 - (5s4d)3D2 transition

, 2009
We describe repumping and spectroscopy of laser-cooled strontium (Sr) atoms using the (5s5p)3P2 - (5s4d)3D2 transition. Atom number in a magneto-optical trap is enhanced by driving this transition because Sr atoms that have decayed into the (5s5p)3P2 ...
A J Traverso, B J DeSalvo, Bernath P, M Yan, P Anzel, P G Mickelson, S B Nagel, T C Killian, Y N Martinez de Escobar   +8 more
core   +1 more source

Oxygen isotope ratios in olivine from the Hawaii Scientific Drilling Project [PDF]

, 1996
Oxygen isotope ratios of olivine in 23 tholeiites from the Hawaii Scientific Drilling Project (HSDP) core (15 from Mauna Kea, 8 from Mauna Loa) and three samples of outcropping subaerial or dredged submarine Mauna Kea lavas have been measured by laser ...
Eiler, John M., Stolper, Edward M., Valley, John W.   +2 more
core   +1 more source

Trace Element Patterns in Juvenile Wild Chimpanzee Dentitions

Archaeometry, EarlyView.
ABSTRACT Trace elements are used to infer mammalian early‐life diets, environmental toxins, dispersal patterns, stress histories, and weaning ages. Here, we employ laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) to reveal elemental patterns in our closest living relatives, chimpanzees.
Tanya M. Smith, Manish Arora, Maya Bharatiya, Nicole Leonard, Jian‐xin Zhao, Christine Austin   +5 more
wiley   +1 more source

Spatial and temporal variation in otolith chemistry for tautog (Tautoga onitis) in Narragansett Bay and Rhode Island coastal ponds [PDF]

, 2010
The elemental composition of otoliths may provide valuable information for establishing connectivity between fish nursery grounds and adult fish populations. Concentrations of Rb, Mg, Ca, Mn, Sr, Na, K, Sr, Pb, and Ba were determined by using solution-
Bengtson, David A., Durant, Daisy, Durbin, Edward G., Kingsley, Richard, Mateo, Ivan, Swart, Peter K.   +5 more
core  

Wet Season Carbon (δ13C) and Nitrogen (δ15N) Composition of Modern Plants as Isotopic Framework for Agropastoral and Palaeoecological Studies in Northern Greece

Archaeometry, EarlyView.
ABSTRACT Mediterranean wetlands are one of Europe's most vital and endangered biodiversity hotspots. This study determined the carbon (δ13C) and nitrogen (δ15N) isotope values of modern plants to construct an isotopic framework by which to contextualize agropastoral management in and around past wetland ecosystems.
Doris Vidas‐Cardador, Amy Styring, Michael Charles, Valasia Isaakidou, Paul Halstead, Amy Bogaard   +5 more
wiley   +1 more source

Fractionation Mechanism and Flux Estimation of Strontium Isotopes During Basalt Weathering

Geochemistry, Geophysics, Geosystems
The fluxes of metal cations and isotopes released by weathering of silicate rocks are crucial and a prerequisite for constraining geochemical fluxes to rivers and oceans.
Kai Luo, Jinlong Ma, Zhibing Wang, Guanhong Zhu, Ti Zeng, Gangjian Wei   +5 more
doaj   +1 more source

Assessing Mobility Among Inferred Elites Interred in Crypts 1–3 on Kom H at Tungul (Old Dongola), Sudan

Archaeometry, EarlyView.
ABSTRACT As the capital of Makuria, Tungul was a major sociopolitical center within medieval Nubia, being the seat of a bishopric and a monastic community. During the excavation of the Kom H monastery, three burial crypts (Crypts 1–3) were uncovered.
Robert J. Stark, Artur Obłuski, Robert Mahler   +2 more
wiley   +1 more source

The Need to Consider Geochemistry When Interpreting Sr-Isotopes. Comment on Gregorčič et al. The Provenance of Slovenian Milk Using ⁸⁷Sr/⁸⁶Sr Isotope Ratios. Foods 2021, 10, 1729. [PDF]

Foods, 2022
Horacek M.
europepmc   +1 more source