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

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 camp...

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Bibliographic Details
Main Authors: Raposeiro, Pedro Miguel, Hernández, Armand, Gonçalves, Vítor, Bao, Roberto, Sáez, Alberto, Shanahan, Timothy M, Rúbio, Maria Jesus, Vázquez-Loureiro, David, Giralt, Santiago
Format: Dataset
Language:English
Published: PANGAEA 2021
Subjects:
Azores Archipelago
deep lake
multiproxy
oceanic island
AGE
Age
Aerophilous diatoms
Diatoms, benthic
Carbon dioxide, partial pressure, blood, standard error
Diatoms, planktic
Chironomini
Orthocladiinae
Tanytarsini
Tanypodinae
Carbon, organic, total/Nitrogen, total ratio
Carbon, organic, total
δ13C
Nitrogen, total
δ15N
Accumulation rate, 5beta-cholestan-3beta-ol
Accumulation rate, 5alpha-stigmastan-3beta-ol
Gravity corer, UWITEC
Diatom analysis Battarbee, 1986, in Berglund, Handbook of Holocene Pal.
Chironomid analysis Brooks et al, 2007, The identification and use of Palaeartic Chironomid Larvae in Palaecology
Mass spectrometer Finnigan Finnigan delta Plus EA-CF-IRMS
Gas chromatography - Mass spectrometry GC-MS
Development of a CCAMLR Marine Protected Area in the Antarctic Weddell Sea WSMPA
Antarctic
The Antarctic
Weddell Sea
Weddell
Berglund
Antarc*
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.933710
https://doi.pangaea.de/10.1594/PANGAEA.933710
Description
Summary: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. ...

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