/* DATA DESCRIPTION: Citation: Fletcher, Michael-Shawn; Romano, Anthony; Maezumi, Shira Yoshi (2026): Fourier-transform infrared (FTIR) spectra of sedimentary charcoal fragments from Purghagoolah (Lake Elusive), southeastern Australia, for fire-temperature reconstruction [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.995749, In: Fletcher, Michael-Shawn; Romano, Anthony (2026): Multiproxy palaeoecological record from Purghagoolah (Lake Elusive), Gippsland, southeastern Australia: pollen, macroscopic charcoal, FTIR charcoal temperature, magnetic susceptibility and radiocarbon [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.995756 Abstract: This table provides mid-infrared absorbance spectra of individual charcoal fragments isolated from a 1 m sediment core at Purghagoolah (Lake Elusive), a lake of approximately 40 ha and 21 m depth in Croajingolong National Park, Gippsland, southeastern Australia, on Gunaikurnai Country (37°44'50"S, 149°27'9"E; decimal -37.747222, 149.452500, WGS84; 50 m a.s.l.), cored on 9 February 2021 with a Universal Corer (Aquatic Instruments), used to reconstruct past fire (pyrolysis) temperature. Approximately 20 charcoal fragments per level were isolated from undigested sediment, and transmission FTIR spectra were acquired on a Nicolet iN10 MX infrared microscope using OMNIC Picta software over the mid-infrared range. Each row is one fragment, identified by its sample age (a BP), with absorbance reported at each wavenumber from 951 to 3499 cm-1. The spectra were compared against a modern reference spectral library (provided separately in this submission) by analogue matching to estimate maximum pyrolysis temperature. A total of 1,092 fragment spectra are included. Keyword(s): analogue matching; Charcoal; fire temperature; FTIR; Infrared Spectroscopy; Lake Elusive; palaeofire; Purghagoolah; pyrolysis temperature; southeastern Australia Related to: Fletcher, Michael-Shawn; et al. (submitted): Australia's current wildfire crisis linked to colonial land-use change. Nature Coverage: LATITUDE: -37.747222 * LONGITUDE: 149.452500 DATE/TIME START: 2021-02-09T00:00:00 * DATE/TIME END: 2021-02-09T00:00:00 MINIMUM ELEVATION: 50.0 m * MAXIMUM ELEVATION: 50.0 m Event(s): Purghagoolah * LATITUDE: -37.747222 * LONGITUDE: 149.452500 * DATE/TIME: 2021-02-09T00:00:00 * ELEVATION: 50.0 m * LOCATION: Lake Elusive, Victoria, Australia * METHOD/DEVICE: Universal Corer, Aquatic Instruments (UC) Parameter(s): Text file (TEXT) * PI: Fletcher, Michael-Shawn (https://orcid.org/0000-0002-1854-5629) Text file (File Size) [Bytes] (TEXT (Size)) * PI: Fletcher, Michael-Shawn (https://orcid.org/0000-0002-1854-5629) Text file (Media Type) (TEXT (Type)) * PI: Fletcher, Michael-Shawn (https://orcid.org/0000-0002-1854-5629) File content (Content) * PI: Fletcher, Michael-Shawn (https://orcid.org/0000-0002-1854-5629) License: Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/) Status: Curation Level: Basic curation (URI: https://wiki.pangaea.de/wiki/Curation_levels) Size: 2 data points Files: All files referred to in data matrix can be downloaded in one go as ZIP or TAR (PANGAEA user account required). To download single files, use the filename from data matrix appended to "https://download.pangaea.de/dataset/995749/files/". */ TEXT TEXT (Size) [Bytes] TEXT (Type) Content Purghagoolah_FTIR_sample_spectra.txt 34.7 MBytes text/plain Fourier-transform infrared (FTIR) spectra of sedimentary charcoal fragments