strontium isotope ross

Strontium Isotope Characterization of Wines from the …

DOI: 10.1016/J.PROEPS.2015.07.059 Corpus ID: 129665100; Strontium Isotope Characterization of Wines from the Quebec (Canada) Terroir @article{Victor2015StrontiumIC, title={Strontium Isotope Characterization of Wines from the Quebec (Canada) Terroir}, author={Vinciguerra Victor and Stevenson Ross and …

Geochemical behavior of stable strontium isotopes …

The results of these existing studies indicate that 86 Sr is preferentially adsorbed during the formation of secondary minerals, such as clay minerals and Fe-Mn …

Strontium isotope tracing of terrigenous sediment dispersal …

Strontium isotope composition of terrigenous sediments presented on a polar projection, including a schematic ACC (gray), ... [18] The pattern of Sr isotope variation in the Ross Sea Sector reveals decreasing values to the north and east. The highest values originate from the East Antarctic side of the Ross Sea.

Carbon, sulfur, oxygen and strontium isotope …

The whole rock carbon isotope values of Heydari et al. (2001) for the same section are illustrated for comparison by a grey shadow, calibrated only by section meters. (Abbreviations as in Fig. 3) +4

Strontium isotopes in tap water from the coterminous USA

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

High-Resolution Stratigraphy with Strontium Isotopes | Science

a neodymium and strontium isotopic study of the mesozoic calc-alkaline granitic batholiths of the sierra-nevada and peninsular ranges, california, journal of geophysical research 86: 10470 (1981 ... sources and abundance of volcanogenic sediment in piston cores from ross sea, antarctica, new zealand journal of geology and geophysics 20: 1017 ...

Carbon, sulfur, oxygen and strontium isotope records, …

The rise of the strontium isotope values is thought to be related to enhanced continental weathering under humid climatic conditions in the ... Ross and Ross 1987). The Late Permian sea level fall did occur on the Russian Platform, in North America and Siberia (e.g. Ross and Ross 1995), but time equivalent large-scale transgressions ...

GEOREFERENCING A COLD CASE VICTIM WITH LEAD, STRONTIUM …

Taken together, the radiogenic and stable isotope data indicate that the decedent was foreign born. The shift in the hair C isotopes suggests that the victim arrived in Florida/United States between 2 and 12 months before she was murdered. The Pb isotope data suggest European origin.

(PDF) Strontium and stable isotope evidence for diet and …

Abstract and Figures. This paper presents the results of a multi-isotopic (oxygen, strontium, carbon and nitrogen isotopes) investigation of population and dietary diversity in Roman Gloucester ...

Diagenetic effects on strontium isotopes in shallow-water …

Seawater 87 Sr/ 86 Sr ratios have been used as a proxy for continental weathering flux and the partial pressure of atmospheric CO 2 (pCO 2) in Earth's past, but the fidelity of 87 Sr/ 86 Sr records in marine carbonates under diagenesis remains controversial. To investigate this issue, we undertook an integrated chemostratigraphic …

Strontium and stable isotope evidence of human mobility

When taking into account the average 87 Sr/ 86 Sr ratio of each tooth, all but one Gravettian specimen (PA91, 87 Sr/ 86 Sr = 0.70900, Final Gravettian) fit the local bio-available Sr isotope ...

Strontium isotope proxy of sedimentological records …

Strontium isotope proxy of sedimentological records reveals uplift and erosion in the Southeastern Neo-Tethys ocean during the late Cretaceous | Scientific …

Strontium isotope evidence for landscape use by early …

We used a geochemical proxy, strontium isotope analysis of tooth enamel, to investigate landscape use in early hominins. We sampled a series of hominin tooth-crowns with a relatively new method ...

Statistics For Strontium Isotope Stratigraphy: A Robust …

We provide a best‐fit curve to 1849 strontium isotope data for the period 0 to 206 Ma using the LOcally‐WEighted regression Scatterplot Smoother (LOWESS) method. This is a robust, nonparametric modern regression technique. Since it does not yield an explicit mathematical equation relating 87Sr/86Sr to time, a look‐up table to determine numeric …

Strontium isotopic composition as tracer of weathering …

Strontium isotopes ( 87 Sr/ 86 Sr) are routinely used to determine sources and mixing relationships in geochemical studies. They have proven to be useful in determining weathering processes and quantifying end-member mixing processes. A number of studies highlight that Sr isotopes represent a powerful tool helping to …

High-resolution strontium isotope stratigraphy across the …

Marine authigenic minerals, if unaltered, retain the strontium isotopic composition of the seawater in which they precipitated. By analyzing stratigraphically well-constrained marine carbonates, phosphates, and barites for their 87 Sr/ 86 Sr ratios, we can reconstruct temporal variations in seawater Sr isotopic composition. Such 87 Sr/ 86 Sr …

U/PB zircon, strontium, and oxygen isotopic and geochronological study

Strontium and oxygen isotopic data on the zircon geochronology sample suite suggest simple twocomponent mixing of mantle-derived gabbroic to tonalitic magmas with partial to complete melt products from the metasedimentary framework rocks. Sedimentary admixtures for some granitic rocks may be as high as 45%, but for the tonalitic batholithic ...

Strontium isotopic composition as tracer of weathering …

Strontium isotopic composition as tracer of weathering processes, a review with respect to James Ross Island, Antarctica Jitka Míková* Czech Geological Survey, Klárov 3, Prague 1, CZ-118 21, Czech Republic Abstract Strontium isotopes (87Sr/86Sr) are routinely used to determine sources and mixing relationships in geochemical studies.

Equilibrium Fractionation of Stable Strontium Isotopes …

The strontium isotope system includes radiogenic (87 Sr/ 86 Sr) and stable (88 Sr/ 86 Sr) isotopes. The radiogenic Sr isotope ratio ( 87 Sr/ 86 Sr) is a tracer for oceanic Sr input fluxes from weathering and hydrothermal processes (Blum & Erel, 1995 ; Capo & Depaolo, 1990 ).

(PDF) Variations in the strontium isotope …

We refined the strontium isotope seawater curve for the Paleocene and early Eocene by analysis of samples recovered from the Walvis Ridge during Ocean Drilling Project (ODP) Leg 208. The highest ...

Characterizing wine terroir using strontium isotope ratios: a …

This paper presents a detailed review of the use of 87 Sr/ 86 Sr isotope systematics for wine provenance studies. The method is based on the principle that the Sr isotope ratio in wine reflects that of the labile fraction of the vineyard soil from which the wine is produced. The review encompasses 87 Sr/ 86 Sr data from wine samples …

Isotopes and aDNA: teasing apart ancestry versus migration …

Here, I will largely be referring to isotopic analysis of human tooth enamel as a proxy for mobility, using strontium and oxygen isotopes (87Sr/86Sr and δ18O). When the enamel of our teeth forms, it locks in oxygen and strontium isotopic signatures that reflect drinking water and underlying bedrock isotopic variability respectively.

Strontium Isotope Stratigraphy

Abstract. The 87 Sr/ 86 Sr value of Sr dissolved in the world's oceans has varied through time in a known way. When minerals, such as biogenic calcite, precipitate from seawater, they incorporate Sr from seawater and capture the 87 Sr/ 86 Sr value for marine-Sr at the time of precipitation. Measurement of the 87 Sr/ 86 Sr value in fossil ...

Definition of Late Cretaceous Stage Boundaries in …

Our strontium isotopic recalibration of ages strengthens the suggestion that inoceramid bivalves became extinct at southern high latitudes much earlier than they did in the …

Strontium-isotope stratigraphy and oxygen- and carbon-isotope …

Semantic Scholar extracted view of "Strontium-isotope stratigraphy and oxygen- and carbon-isotope variation during the Middle Jurassic–Early Cretaceous of the Falkland Plateau, South Atlantic" by G. Price et al. ... New 87Sr/86Sr analyses of macrofossils from 13 key marker horizons on James Ross and Vega Islands, Antarctica, …

Strontium isotopic study of sediment from the Ross Sea

As part of a study of the chemical composition and strontium isotopic composition of sediment deposited in the Ross Sea of Antarctica, samples from unit 1 of Deep Sea Drilling Project (DSDP) site 270 were analyzed.

Weathering processes, catchment geology and river

Radiogenic (87 Sr/ 86 Sr) and stable (δ 88/86 Sr) strontium isotope compositions spanning a calendar year are reported for rivers from across subarctic Canada that drain contrasting lithologies ranging from Precambrian bedrock (Koksoak, Great Whale and La Grande rivers of Northern Quebec) to carbonate and clastic Phanerozoic …

Strontium isotope evolution of Late Permian and Triassic …

Strontium isotopic composition of ancient seawater can serve as a proxy for understanding the tectonic evolution of the Earth system Hodell et al 1990, ... (Ross and Ross, 1987), exposing large areas of the Russian Platform, North America, and Siberia, but it also witnessed large-scale transgressions in China, Iran, western Tethys, and in the ...

Strontium isotope tracing of terrigenous sediment …

Strontium isotope tracing of terrigenous sediment dispersal in the Antarctic Circumpolar Current: Implications for constraining frontal …

Strontium Isotopes Geochemistry Overview | Isobar Science

The element strontium has four naturally occurring isotopes: 84 Sr, 86 Sr, 87 Sr, and 88 Sr. Only 87 Sr is radiogenic – produced by the β-decay of 87 Rb with a half-life of 48.8 billion years. The most abundant strontium isotope is 88 Sr, making up approximately 83% of naturally occurring strontium; followed by 10% 86 Sr, 7% 87 Sr and 1% 84 Sr. In …