Results 21 to 30 of about 37,540 (245)

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Strontium isotopes and the reconstruction of the Chaco regional system: evaluating uncertainty with Bayesian mixing models. [PDF]

PLoS ONE, 2014
Strontium isotope sourcing has become a common and useful method for assigning sources to archaeological artifacts.In Chaco Canyon, an Ancestral Pueblo regional center in New Mexico, previous studiesusing these methods have suggested that significant ...
Brandon Lee Drake, Wirt H Wills, Marian I Hamilton, Wetherbee Dorshow   +3 more
doaj   +1 more source

A score of bioavailable strontium isotope archaeology in China: Retrospective and prospective

Frontiers in Earth Science, 2023
Bioavailable strontium isotope analysis was proposed for prehistoric human ecology almost 40 years ago and rapidly became one of the most important tools to trace past migratory behaviours.
Zihua Tang, Zihua Tang, Xueye Wang
doaj   +1 more source

Evidence of hydrological control of Sr behavior in stream water (Strengbach catchment, Vosges mountains, France) [PDF]

, 2002
Strontium and particularly 87Sr/86Sr ratios in stream water have often been used to calculate weathering rates in catchments. Nevertheless, in the literature, discharge variation effects on the geochemical behavior of Sr are often omitted or considered ...
Amiotte-Suchet, Anne Probst, Aubert, Bailey, Bain, Bain, Bonhomme, Clow, Dambrine, Daniel Viville, Depaolo, Dominique Aubert, Elias, Fichter, Fichter, Gosz, Gosz, Graustein, Graustein, Idir, Jacks, Krishnaswami, Ladouche, Land, Lasaga, Lefèvre, Likens, McNutt, Miller, Négrel, Négrel, Palmer, Peter Stille, Pionke, Pionke, Probst, Probst, Probst, Probst, Probst, Probst, Rice, Riotte, Stottlemyer, Tricca, Åberg, Åberg, Åberg, Åberg   +48 more
core   +2 more sources

Strontium isotope fractionation of planktic foraminifera and inorganic calcite [PDF]

, 2012
We have investigated the strontium isotope fractionation (Δ88/86Srcarb–aq) between inorganic calcite and aqueous Sr2+ ions by precipitation experiments at a constant temperature of 25 °C and precipitation rates (R) ranging from 102.3 to 104.2 μmol/m2/h ...
Al-Horani, Andre Krabbenhöft, Anton Eisenhauer, Basak Kisakürek, Bigeleisen, Boudreau, Bourg, Böhm, Böhm, Carpenter, Christian Horn, Coggon, de Beer, de Souza, de Villiers, DePaolo, DePaolo, Dietzel, Dietzel, Elderfield, Elderfield, Fantle, Fantle, Fietzke, Florian Böhm, Gradstein, Griffith, Griffith, Gussone, Gussone, Gussone, Gussone, Gussone, Halicz, Jacobson, Jianwu Tang, Kerisit, Kisakürek, Knudson, Krabbenhöft, Krabbenhöft, Köhler-Rink, Lea, Lemarchand, Li, Liebetrau, Marriott, Martin Dietzel, McArthur, McArthur, Megyes, Miles, Milliman, Nier, Nürnberg, Ohno, Raiteri, Reynard, Richter, Rüggeberg, Schiebel, Seward, Steiger, Tang, Tang, Tesoriero, Tofteberg, Watson, Watson, Wolf-Gladrow, Wombacher, Young   +71 more
core   +1 more source

New evidence for the age of the Athol Formation (Middle Jurassic : Bajocian) in the Tusk-1 and Tusk-2 wells, offshore Carnarvon Basin, Western Australia [PDF]

, 2010
The co-occurrence of ammonites with palynomorphs in the Athol Formation of the Tusk-1 and Tusk-2 wells drilled in the offshore Carnarvon Basin, Western Australia confirms the Early Bajocian (Middle Jurassic) age of the Dissiliodinium caddaense ...
Darbyshire, D.P. Fiona, Riding, James B., Westermann, Gerd E.G.   +2 more
core   +1 more source

Exploring the potential of the strontium isotope tracing system in Denmark

Danish Journal of Archaeology, 2012
Migration and trade are issues important to the understanding of ancient cultures. There are many ways in which these topics can be investigated. This article provides an overview of a method based on an archaeological scientific methodology developed ...
Karin Margarita Frei
doaj   +1 more source

Tales from Ginderup Mound in Thisted County, Denmark

Danish Journal of Archaeology, 2023
The preservation of organic and human remains in Early Nordic Bronze Age mounds (1700 BCE -1100 BCE) permits new provenance work on this important period.
Samantha Scott Reiter, Niels Algreen Møller, Marie Louise Schjellerup Jørkov, Jens-Henrik Bech, Robert Frei, Karin M. Frei   +5 more
doaj   +1 more source

Early Neoproterozoic limestones from the Gwna Group, Anglesey [PDF]

, 1998
Limestone megaclasts up to hundreds of metres in size are present within the Gwna Group mélange, North Wales, UK. The mélange has been interpreted as part of a Peri-Gondwanan fore-arc accretionary complex although the age of deposition remains ...
JANA M. HORÁK, JANE A. EVANS, O'Brian, Blatt, Matthew, Shackleton, Dickin, Gibbons, Denison, McCausland, Montañez, Schuster, Shackleton, Shields, Walter, White, Wood   +16 more
core   +4 more sources

The Maglemosian skeleton from Koelbjerg, Denmark revisited

Danish Journal of Archaeology, 2017
The Koelbjerg individual, dated c. 8500 cal BC, represents the earliest human skeletal remains described from Scandinavia. Based on ancient DNA, strontium isotope and statistical anthropological analyses the individual’s sex, haplogroup and geographical
Jesper Hansen, Hans Christian Petersen, Karin Margarita Frei, Patrice Courtaud, Anne-marie Tillier, Anders Fischer, Morten E. Allentoft   +6 more
doaj   +1 more source