2019-11-13 · Figure 3. Relation of strontium concentrations to strontium isotopes in water from the Goose Lake study area, northwestern Montana. sample. An important consideration is that evaporation of both fresh and contaminated waters will increase the Sr concentration but will not change the 87Sr/86Sr ratio.
2012-12-1 · Strontium isotope ratios within a radius of 10 km of a site are indicative of those of the terrestrial sources used by a local population. The mean strontium isotope ratio of plants within a radius of 10 km of the Ota shell mound was 0.70950 ± 0.00081 (n = 11) with a range of 0.70847–0.71071.
1975-12-1 · The strontium isotope ratio in sea water has varied through geologic time owing to the input of strontium from rock weathering. To evaluate the possibility that Sr 87 Sr 86 ratios might be altered during weathering, seven weathering profiles developed on Mesozoic arkoses located along the length of New Zealand were investigated. The rubidium-strontium-strontium isotope relations in these ...
We analyzed strontium isotopes in more than 500 samples of shell, bone, and dental enamel from modern and archaeological contexts throughout Mesoamerica. The results correspond closely with expectations based upon the local geology and earlier measurements of geological materials.
2012-7-26 · There are four natural isotopes of Sr, 3 non-radiogenic (84 Sr, 86 Sr, and 88 Sr) and 1 radiogenic, the product of radioactive decay. The radiogenic isotope, 87 Sr, is formed through the β-decay of 87 Rb, which has a half-life of 48.8 × 10 9 years. By convention, measured Sr isotope ratios are reported as 87 Sr/ 86 Sr and calculated as
Strontium Isotopes from the Earth to the Skeleton: A Review 137 stream waters, plants, animals and people, and ﬁnally how strontium isotopes are incorporated into archaeological skeletons.
2011-1-1 · Strontium isotope evidence of migration and diet in relation to ritual tooth ablation: a case study from the Inariyama Jomon site, Japan. ... The carbon and nitrogen isotope analyses revealed a relationship between ritual tooth ablation type and the average dietary profile during about 10 years before an individual''s death. The Sr isotope ...
1998-5-1 · The variation in strontium concentration and 87 Sr/ 86 Sr ratios was measured for samples taken at eight-hourly intervals in a period in April 1995 just before, during, and just after heavy rainfall which caused a large increase in the flow rate of the stream. The concentration of strontium fell from about 60 μg l −1 before the rainfall event to a minimum of 30.3 μg l −1 during the ...
2015-1-2 · Megaliths and mobility in south-western Sweden: investigating relations between a local society and its neighbours using strontium isotopes. Journal of Anthropological Archaeology 28: 85 – 101.Google Scholar
2008-11-25 · Strontium (Sr) isotopes in tooth enamel reflect dietary strontium derived from soils during childhood and will vary between individuals from distinct geological regions. They can be used to infer the childhood geological location of an individual and hence identify subsequent movement, which may be related to subsistence behavior, traditions of ...
2011-4-12 · Strontium has four natural occurring isotopes, 88 Sr, 87 Sr, 86 Sr, and 84 Sr, that vary in an ecosystem based on the underlying geology (Faure and Powell 1972).Of these four isotopes, only 87 Sr is radiogenic; it is formed over time by radioactive decay from rubidium (87 Rb), which has a half-life of about 4.88 × 10 10 years (Faure 1986).Strontium isotope data are reported as 87 Sr/ 86 Sr ...
· Strontium isotope systematics are introduced and the various components contributing to strontium in seawater are outlined. Residence time of Sr in seawater and present day variations in ⁸⁷Sr ...
isotopes. Hence, mass-dependent relations can be defined as: ... Strontium isotope analyses are currently used to trace ancient human migrations and reconstruct ancient human mobility at the ...
2018-8-2 · Strontium-87 is the product of the radioactive decay of rubidium-87 (87 Rb), so strontium isotope ratios (87 Sr/ 86 Sr) vary between different types of bedrock, depending on the initial 87 Sr/ 86 ...
2006-7-29 · Strontium isotope analysis of archaeological skeletons has provided useful and exciting results in archaeology in the last 20 years, particularly by characterizing past human migration and mobility. This review covers the biogeochemical background, including the origin of strontium isotope compositions in rocks, weathering and hydrologic cycles that transport strontium, and biopurification of ...
Strontium isotope systematics are introduced and the various components contributing to strontium in seawater are outlined. Residence time of Sr in seawater and present day variations in ⁸⁷Sr ...
A strontium isotope analysis on the relationship between ritual tooth ablation and migration among the Jomon people in Japan Soichiro Kusaka, Atsushi Ando, Takanori Nakano, Takakazu Yumoto, Eriko Ishimaru, Minoru Yoneda, Fujio Hyodo, Kazumichi Katayama
Isotope approaches have, however, demonstrated that the dynamics of ''Neolithisation'' were non-homogeneous world-wide. Strontium and oxygen isotopes, for example, indicate a more prolonged transition in Thailand, with changes in residency patterns as matrilocality gained predominance alongside agriculture (Bentley et al.
Strontium isotope analysis to reveal migration in relation to climate change and ritual tooth ablation of Jomon skeletal remains from western Japan. Author links open overlay panel Soichiro Kusaka a Takanori Nakano b Wataru Morita a Masato Nakatsukasa a. Show more. Share.
2019-7-11 · isotopes in marijuana record the geographic origins of marijuana, and that refinement of the base strontium map (or strontium isoscape) and improved understanding of other strontium sources would be productive. KEYWORDS: forensic science, stable isotope ratio, heavy isotopes, drug intelligence, Cannabis sativa, thermal ionization mass spectro-
2021-1-30 · PURPOSE: Strontium (Sr) isotope ratios (87Sr/86Sr) of human hair may be an additional estimator of geographic region independent of O isotopes as Sr is not a structural component of hair and the 87Sr/86Sr ratio of a geographic area is largely controlled by regional geology. The 87Sr/86Sr ratios of biological materials have been successfully
2018-8-3 · The methodical basis, development, and current state of a new method of chronostratigraphic studies, i.e., strontium isotope stratigraphy (SIS), are considered. This method makes it possible to date and correlate geographically distant sedimentary …
2013-2-26 · Geology and Strontium Isotopes in the Danube Gorges. The geology of the region is remarkably complex ().The route of the Danube, connecting the Carpathian and the Dacian Basins through the Danube Gorges, is composed of three smaller valleys and four gorges (42, 43).The rock formations of the Danube Gorges themselves are dominated by limestone massifs with typical karst …
2004-10-26 · 114 C. E. Jones and H. C. Jenkyns—Seawater strontium isotopes, oceanic anoxic Fig. 1. The seawater Sr-isotope curve shows minima in the Late Triassic, Pliensbachian-Toarcian, Callovian-Oxfordian, Aptian-Albian, and Cenomanian-Santonian.
2020-7-15 · Strontium isotope ratios. Human teeth ratios range from 0.70836 to 0.71280 with a mean of 0.70913 (n = 39), whereas the two human bones ratios are 0.70843 and 0.70878.
2016-6-17 · 3.1. Strontium isotopes in skeletal remains from the Yoshigo site Strontium isotope ratios in human tooth enamel were 0.70925 ± 0.00036 (mean ± 1 s.d.) with a range of 0.70868–0.71028. Human bone had 87Sr/86Sr ratios of 0.70895 ± 0.00018 with a range of 0.70871–0.70943. The mean value of tooth enamel was higher
Ancient DNA, Strontium isotopes, and osteological analyses shed light on social and kinship organization of the Later Stone Age Wolfgang Haaka,1,2,3, Guido Brandta,1, Hylke N. de Jongb, Christian Meyera, Robert Ganslmeierc, Volker Heydb, Chris Hawkesworthd, Alistair W. G. Pikeb, Harald Mellerc, and Kurt W. Alta aInstitut fu¨r Anthropologie, Johannes Gutenberg-Universita¨t Mainz, Saarstrasse ...
2010-6-24 · Water chemistry. To characterize the variation in strontium isotope ratios (87 Sr/ 86 Sr) across the estuarine salinity gradient, water samples were collected in 2007 at 8 locations (the confluence of the Sacramento and San Joaquin Rivers near Sherman Island, the Pittsburg Marina, the Benicia Marina, Vallejo Harbor, Black Point, Point San Quentin, Sausalito, and Muir Beach) spanning a salinity ...
Strontium isotope initial ratios at 2.05 b.y. fall in the range 0.706 to 0.708 and the Rb/Sr ratios are approximately 0.02. Whole-rock and Sr isotope compositions of the peridotitc sills can be successfully simulated by a model involving olivine fractionation from a liquid with an initial Sr isotope ratio (R 0 ) similar to that of the ...
2016-6-21 · 127 Its strontium isotope ratio is 0.707–0.708 (Tazaki et al., 1989) which is in accordance 128 with Permian seawater values (McArthur et al., 2001). The strontium weathered from 129 these rocks is the principal contributor of strontium in the biospheres and determines the 130 regional strontium isotopic distribution. 131 Figure 2 indicates ...
Strontium isotopic ratios are widely used as tracers in geological processes and as indicators of provenance in an archaeological context. A significant fraction of the Earth''s 87 Sr is not primordial, but is produced by the decay of 87 Rb. Geochemically, Strontium follows Calcium, while Rubidium follows Potassium; thus, the geological variability of Sr isotope ratios in rocks is a function ...
Strontium Isotopes from the Earth to the Skeleton: A Review 137 stream waters, plants, animals and people, and finally how strontium isotopes are incorporated into archaeological skeletons. Strontium Isotopes in Rocks How strontium isotopes are geographically distributed in the biosphere is largely determined by how 87Sr has evolved in geologic ...
The link between surface water and groundwater-based drinking water – strontium isotope spatial distribution patterns and their relationships to Danish sediments August 2020 Applied Geochemistry ...
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