Results 91 to 100 of about 31,311 (333)

Source of Lake Vostok Cations Constrained with Strontium Isotopes

Frontiers in Earth Science, 2016
Lake Vostok is the largest sub-glacial lake in Antarctica. The primary source of our current knowledge regarding the geochemistry and biology of the lake comes from the analysis of refrozen lake water associated with ice core drilling. Several sources of
William Berry Lyons, Kathleen Ann Welch, John C. Priscu, Martyn Tranter, George Royston-Bishop   +4 more
doaj   +1 more source

Contributions of arid climate and hydrothermal fluid flow on sedimentation in saline‐alkaline lakes: Insight from the Ibar intramontane basin (Southern Serbia)

The Depositional Record, EarlyView.
The article demonstrates that brine was central for the supply of Ca and B to the studied saline lake. The ion transport occurred probably by thermal springs, while contributions from surface waters cannot be excluded. However, the saturation and syndepositional precipitation of Ca borates were initiated by an arid climate through evaporation, while ...
Nevena Andrić‐Tomašević, Benjamin F. Walter, Vladimir Simić, Mohsin Raza, Dragana Životić, Željana Novković, Jochen Kolb, Axel Gerdes, Aratz Beranoaguirre   +8 more
wiley   +1 more source

Precision mass measurements of radioactive nuclei at JYFLTRAP [PDF]

, 2007
The Penning trap mass spectrometer JYFLTRAP was used to measure the atomic masses of radioactive nuclei with an uncertainty better than 10 keV. The atomic masses of the neutron-deficient nuclei around the N = Z line were measured to improve the ...
Aysto, J., Elomaa, V. -V., Eronen, T., Hager, U., Hakala, J., Jokinen, A., Kankainen, A., Moore, I. D., Penttila, H., Rahaman, S., Rinta-Antila, S., Rissanen, J., Saastamoinen, A., Sonoda, T., Weber, C.   +14 more
core   +2 more sources

Insights into the genesis of thick halite in the Kuqa Depression (Tarim Basin, China): New mineralogical, lithological and geochemical evidence

The Depositional Record, EarlyView.
Halite thickness in Mbr 2 of the Kumugeliemu can reach 1000 m. The thick halite is associated with sedimentary rock with shallow water fabrics. The thick halite was formed in a shallow‐sea water environment. The ‘Multiple transgression‐salt‐forming’ model was established.
Peng Qin, Dakang Zhong, Zhonggui Hu
wiley   +1 more source

Strontium isotope (87Sr/86Sr) data from archaeological sites in Utah, USA

Data in Brief, 2019
The information presented here includes the results of strontium isotope analysis on 75 baseline samples from nine Fremont sites in Utah. The baseline samples are of lagomorphs and rodents with limited foraging ranges.
Spencer F.X. Lambert
doaj  

An Improved Chemical Extraction Procedure for the Sr Isotope Analysis of Liquid Agrifood Samples Applied to Authenticating the Origin of Maple Syrups in Quebec (Canada). [PDF]

Rapid Commun Mass Spectrom
ABSTRACT Rationale We describe a new simplified sample preparation technique, based on dual chromatography for the analysis of 87Sr/86Sr in liquid agri‐food samples. We applied this approach for authenticating the origin of maple syrup products in Quebec, characterizing the 87Sr/86Sr of soil profiles from geologically distinct maple groves, including ...
Saar de Almeida B, Stevenson R, Sadiki M, Lagacé L, Widory D.   +4 more
europepmc   +2 more sources

Anomalously cool clumped isotope temperatures in tropical lagoon carbonates

The Depositional Record, EarlyView.
Carbonate clumped isotopes were used to reconstruct paleoclimate from lagoon sediments in the central tropical Pacific. Results were anomalously cool compared to modern measurements and other paleoclimate records. This study highlights the important of understanding carbonate facies and depositional environments in interpreting clumped isotope results.
D. A. Wyman‐Feravich, M. Ingalls, J. L. Conroy, R. He, S. Lusk   +4 more
wiley   +1 more source

Fourier-transform spectroscopy of Sr2 and revised ground state potential

, 2009
Precise potentials for the ground state X1Sigma+g and the minimum region of the excited state 2_1Sigma+u of Sr2 are derived by high resolution Fourier-transform spectroscopy of fluorescence progressions from single frequency laser excitation of Sr2 ...
A. Stein, C. E. Moore, C. H. Townes, E. Tiemann, H. Knöckel   +4 more
core   +1 more source

Trace elements, rare earth elements and isotopes of poorly preserved fossils from lower Cretaceous carbonates (Eastern Black Sea): Implications for early diagenetic alteration

The Depositional Record, EarlyView.
Analysing Rare Earth Elements (REEs) and other trace elements together with stable isotope data in poorly preserved belemnites can provide valuable insights into early diagenetic pathways, water‐interaction processes, and even potential redox conditions.
Merve Özyurt
wiley   +1 more source

Problems with Strontium Isotopic Proveniencing in Denmark?

Danish Journal of Archaeology, 2021
A recent study by Thomsen and Andreasen (2019) has induced a negative reaction to the usefulness of strontium isotope proveniencing. Although there are higher strontium isotope values in the landscape of Denmark, Thomsen and Andreasen are not correct about the impact of this finding on studies of prehistoric mobility. Several case studies identify such
openaire   +4 more sources