Multi-proxy analysis of sediment cores from Lake Azul (Azores archipelago, Portugal)

  1. Raposeiro, Pedro Miguel
  2. Hernández, Armand
  3. Gonçalves, Vítor
  4. Bao, Roberto
  5. Sáez, Alberto
  6. Shanahan, Timothy M
  7. Rúbio, Maria Jesus
  8. Vázquez-Loureiro, David
  9. Giralt, Santiago

Editor: PANGAEA

Year of publication: 2021

Type: Dataset

CC BY 4.0

DOI: 10.1594/PANGAEA.933710 lock_openOpen access editor

Abstract

The Azores archipelago is a group of nine oceanic volcanic islands located in the mid-North Atlantic, roughly 1500 km from Europe and 1900 km from America. Lake Azul located in São Miguel island has a surface area of 4.35 km, 28m of maximum depth and is located at 259m above sea level. A coring campaign was conducted in September 2011 using a 60mm diameter UWITEC gravity corer from UWITEC floating platform retrieving a Core AZ11_02 (1.70 m long) located in the deep basin of the lake (27m depth). The core was dated using ¹⁴C and produced a multi-proxy dataset of geochemical and biological analyses that we used to uncover paleoenvironmental changes on Lake Azul in the last 660 years.

Bibliographic References

  • 10.1016/j.palaeo.2016.11.015
  • 10.1016/j.palaeo.2019.109285