Sediment core-top GDGT data from the Arctic, the North Pacific and the Southern Ocean ...

• Main Authors: Ho, Sze Ling, Mollenhauer, Gesine, Fietz, Susanne, Martínez‐García, Alfredo, Lamy, Frank, Rueda, Gemma, Schipper, Konstanze, Méheust, Marie, Rosell-Melé, Antoni, Stein, Ruediger, Tiedemann, Ralf
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Event label; Method/Device of event; Area/locality; Latitude of event; Longitude of event; Elevation of event; DEPTH, sediment/rock; Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; Multiple investigations; Gravity corer; Box corer Reineck; Giant box corer; MultiCorer; Box corer; MiniCorer; Kasten corer; Piston corer BGR type; BP00; BP01; BP97; BP99; Transdrift-I; ANT-XX/2; ARK-XXI/1b; ANT-XXIII/9; ARK-XXII/2; ANT-XXVI/2; ANT-X/5; ARK-IX/4; ANT-XI/2; ANT-XI/4; ANT-XII/4; ARK-XI/1; SO202/1; Akademik Boris Petrov; Ivan Kireyev; Polarstern; Sonne; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarctic; Arctic; Martínez; Pacific; Southern Ocean; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.832467; https://doi.pangaea.de/10.1594/PANGAEA.832467

TEX86 (TetraEther indeX of tetraethers consisting of 86 carbon atoms) is a sea surface temperature (SST) proxy based on the distribution of archaeal isoprenoid glycerol dialkyl glycerol tetraethers (GDGTs). In this study, we appraise the applicability of TEX86 and TEX86L in subpolar and polar regions using surface sediments. We present TEX86 and TEX86L data from 160 surface sediment samples collected in the Arctic, the Southern Ocean and the North Pacific. Most of the SST estimates derived from both TEX86 and TEX86L are anomalously high in the Arctic, especially in the vicinity of Siberian river mouths and the sea ice margin, plausibly due to additional archaeal contributions linked to terrigenous input. We found unusual GDGT distributions at five sites in the North Pacific. High GDGT-0/crenarchaeol and GDGT-2/crenarchaeol ratios at these sites suggest a substantial contribution of methanogenic and/or methanotrophic archaea to the sedimentary GDGT pool here. Apart from these anomalous findings, TEX86 and ... : Supplement to: Ho, Sze Ling; Mollenhauer, Gesine; Fietz, Susanne; Martínez‐García, Alfredo; Lamy, Frank; Rueda, Gemma; Schipper, Konstanze; Méheust, Marie; Rosell-Melé, Antoni; Stein, Ruediger; Tiedemann, Ralf (2014): Appraisal of TEX86 and TEX(L)86 thermometries in subpolar and polar regions. Geochimica et Cosmochimica Acta, 131, 213-226 ...