Early Jurassic and Late Cretaceous magmatism on Horseshoe Island, Antarctic Peninsula: New U-Pb and microstructural data


Velev S., Lazarova A., KARAOĞLAN F., Vassilev O., Selbesoğlu M. O.

Geologica Balcanica, vol.52, no.3, pp.29-32, 2023 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.52321/geolbalc.52.3.29
  • Journal Name: Geologica Balcanica
  • Journal Indexes: Scopus, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS
  • Page Numbers: pp.29-32
  • Keywords: Antarctic Peninsula, Early Jurassic, Horseshoe Island, magmatism, Upper Cretaceous
  • Istanbul Technical University Affiliated: Yes

Abstract

Early Jurassic U-Pb age is obtained for both foliated and undeformed granites on Horseshoe Island, Antarctic Peninsula. Some microstructures in the foliated granites/orthogneisses indicate high-temperature greenschist or low- to medium-temperature amphibolite facies deformation conditions. Additionally, a Late Cretaceous age is yielded for a gabbro intruding the deformed granitoids.