Data on the arc magmatism developed in the Antarctic Peninsula and Patagonia during the Late Triassic–Jurassic: A compilation of new and previous geochronology, geochemistry and isotopic tracing results

Abstract

We present the results of U-Pb zircon dating conducted using laser ablation-inductively coupled plasma mass spectrometry (LA-ICP-MS), isotopic tracing analyses of Hf in zircon and Sr-Nd in whole-rock and whole-rock major oxides, and trace element abundances of 12 plutonic and volcanic rocks present on the Antarctic Peninsula. The dataset is presented in combination with the results of previous studies conducted in both Patagonia and the Antarctic Peninsula. These results were filtered for concordant 206 Pb– 238 U zircon ages and topology of the 40 Ar/ 39 Ar age spectra. These results may be useful for researchers studying the geological evolution of southern Gondwana, West Antarctica or Patagonia. The interpretation of this dataset is found in the co-submitted paper by Bastias, et al. (2021a) titled ‘A revised interpretation of the Chon Aike magmatic province: active margin origin and implications for the opening of the Weddell Sea’.

Impact of Eocene‐Oligocene Antarctic Glaciation on the Paleoceanography of the Weddell Sea

“…(2010), Bastias et al. (2021), Riley et al. (2001), Vennum and Rowley (1986), Vennum and Storey (1987), Schandl et al.…”

“…Furthermore, La/Yb ratios can be used to distinguish old thick crust from thinner younger crust (Moyen, 2009; Smithies et al., 2019). Thick garnet‐bearing crustal rocks in East Antarctica have high La/Yb ratios (Paulsson & Austrheim, 2003; Will et al., 2010), whereas younger West Antarctic and Antarctic Peninsula sources show low La/Yb ratios (Bastias et al., 2021; Riley et al., 2001). Thus, La/Th and La/Yb ratios in combination with Hf concentrations can be used to distinguish between different types of magmatic and metamorphic terranes.…”

“…This process explains why Sm/Zr ratios are higher in plutonic West Antarctic rocks from the Ellsworth‐Whitmore block, which were affected by partial melt and intraplate magmatism during the break‐up of Gondwana (Craddock et al., 2017; Lee et al., 2012; Vennum & Storey, 1987). Sm/Zr ratios are relatively similar and low in the East Antarctic and Antarctic Peninsula source rocks (Bastias et al., 2021; Paulsson & Austrheim, 2003; Riley et al., 2001; Vennum & Rowley, 1986; Will et al., 2010).…”

Seafood Processing, Preservation, and Analytical Techniques in the Age of Industry 4.0

“…Nowadays, and transversal to several fields of science-including medicine, chemistry, pharmacy, and other related fields, high resolution chromatographic techniques (HRCT) and mass spectrometry (MS), has evolved as one of the most valuable analytical tools available to modern scientists allowing a deep and comprehensive knowledge on structural elucidation of unknown substances [133], quality control of drugs [134], clinical [135], environmental [136], food control [137], and forensic analytes [138], providing qualitative as well as quantitative information for a broad variety of compound classes. Other applications include inorganic chemical analysis, geochronology [139], reaction kinetics [140], determination of thermodynamic parameters and ion-molecule reactions [141]. Unequalled sensitivity, very low detection limits, speed and diversity of its applications are analytical characteristics that have raised MS and HRCT to an outstanding level among analytical methods.…”