de.pangaea.dataset989435 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-04-30T20:49:51Z https://doi.pangaea.de/10.1594/PANGAEA.989435 <gco:CharacterString>Hydrogen isotopes of n-alkane biomarkers and brGDGT temperatures from Lake Tulane, Florida, USA</gco:CharacterString> 2026-01-26T06:29:31 publication https://doi.org/10.1594/PANGAEA.989435 Arnold, T Elliott
tea27@pitt.edu
https://www.geology.pitt.edu/people/elliott-arnold information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital This dataset includes temperatures derived from branched glycerol dialkyl glycerol tetraethers (brGDGTs) and regional hydrology changes reconstructed from hydrogen isotope ratios (δ2H) of n-alkanes extracted from a lacustrine sediment core from Lake Tulane, Florida, USA. In 1994, 8 cores from 6 locations (2 complete overlaps) were acquired from a transect along the north basin of Lake Tulane. Cores were taken with a 7.5-cm diameter Wright square-rod piston corer from an anchored raft. Separately, a single surface-water interface core was acquired from the north basin of Lake Tulane in 2010. brGDGTs and n-alkanes were extracted from archived core sections at 8-10 cm intervals in August of 2018 and from the surface-water interface core at 5 cm intervals in August of 2019. The archived core interval spanned Heinrich Stadials 4-2 (41,000-17,000 BP) and the surface-water interface core spanned 78-0 BP. brGDGT distributions from both cores were measured via atmospheric pressure chemical ionization high-performance liquid chromatography-mass spectrometry (APCI/HPLC–MS), and hydrogen isotope ratios of n-alkanes were measured on a Thermo Trace GC Ultra coupled to a Thermo Electron Delta V Advantage IRMS with an Isolink combustion furnace. The brGDGT data was converted to degrees Celsius (°C) following the open-sourced code provided in O'Beirne et al. (2023, doi:10.1016/j.gca.2023.08.019). Hydrogen isotope results are given in the conventional δ-notation. A proxy for seasonal precipitation and aridity (ε(C29-C23)) was created, which reflects the difference between the δ2H values of aquatic n-alkanes (δ2HC23) and terrestrial leaf wax δ2H values (δ2HC29) using the following equations: (1) α = (1000 + 𝛿2HC29)/(1000 + 𝛿2HC23), and (2) ε(C29-C23) = (α -1) x 1000. completed Arnold, T Elliott
tea27@pitt.edu
https://www.geology.pitt.edu/people/elliott-arnold information principalInvestigator Branched GDGTs Hydrogen isotopes Lake core Lake Tulane theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation 81.500361 81.500361 27.585833 27.585833 2018-08-11T00:00:00 2018-08-11T00:00:00 Event label thematicClassification Latitude of event thematicClassification Longitude of event thematicClassification Date/Time of event thematicClassification Core thematicClassification Device type thematicClassification AGE physicalMeasurement ka BP ka BP Temperature, water physicalMeasurement Reconstructed, using branched GDGTs °C °C δ Deuterium, n-alkane C23 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ δ Deuterium, n-alkane C27 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ δ Deuterium, n-alkane C29 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ δ Deuterium, n-alkane C31 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ δ Deuterium, n-alkane C33 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ δ Deuterium, n-alkane C35 physicalMeasurement See Device type column; vs. VSMOW ‰ ‰ ε physicalMeasurement See Device type column; c29-c23 (‰ VSMOW) ‰ ‰ text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.989435?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: Lake_Tulane_AC (Lake Tulane Archive Core) * LATITUDE: 27.585833 * LONGITUDE: 81.500361 * DATE/TIME: 2018-08-11T00:00:00 * LOCATION: Florida, USA * METHOD/DEVICE: Core 2018-08-11T00:00:00 EVENT LABEL: Lake_Tulane_SC (Lake Tulane Surface Core) * LATITUDE: 27.585833 * LONGITUDE: 81.500361 * DATE/TIME: 2018-08-11T00:00:00 * LOCATION: Florida, USA * METHOD/DEVICE: Core 2018-08-11T00:00:00 Supplement to <gco:CharacterString>Atmospheric transmission of temperature and precipitation change in Florida during North Atlantic Heinrich events</gco:CharacterString> Arnold, T Elliott
tea27@pitt.edu
https://www.geology.pitt.edu/people/elliott-arnold information author Hilliker, J L author Werne, Josef P
jwerne@pitt.edu
https://orcid.org/0000-0002-7019-6024 information author Thompson, A J author documentHardcopy Paleoceanography and Paleoclimatology References <gco:CharacterString>A critical assessment of lacustrine branched glycerol dialkyl glycerol tetraether (brGDGT) temperature calibration models</gco:CharacterString> 2023-01-01 publication https://doi.org/10.1016/j.gca.2023.08.019 O'Beirne, Molly D
mdobeirne@pitt.edu
author Scott, Wesley P
wps17@pitt.edu
https://www.geology.pitt.edu/people/wesley-scott information author Werne, Josef P
jwerne@pitt.edu
https://orcid.org/0000-0002-7019-6024 information author documentDigital Geochimica et Cosmochimica Acta 359 100-118