Salzmann, Ulrich; Bauersachs, Thorsten; Klages, Johann Philipp; Gerschel, Henny; Müller, Juliane; Heinz, Immo; Hillenbrand, Claus-Dieter; Bohaty, Steven M; Bickert, Torsten; Titschack, Jürgen; Kaschuro, Sergej; Nehrke, Gernot; Pälike, Heiko; Science Party of Expedition PS104: Hopanes of core 9R and 10R from MARUM-MeBo70 Site PS104_20-2 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994801 (dataset in review), In: Salzmann, U et al.: Charcoal, palynology and geochemical analyses of core 9R and 10R from MARUM-MeBo70 Site PS104_20-2 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.994798 (dataset in review)
Abstract:
Here we present measurements of hopanes from the mid-Cretaceous layer in drill core 9R and 10R at MARUM-MeBo70 Site PS104_20-2 (73.57°S, 107.09°W; 946 m water depth) for reconstructing past wildfire activity and vegetation near the South Pole. The site is located within the Pine Island cross-shelf trough in the Amundsen Sea Embayment (ASE), West Antarctica and was drilled during RV Polarstern Expedition PS104 in 2017. We applied the C31 hopane αβ 22S/(22S + 22R) ratio as a proxy to determine the thermal maturity of the organic matter25 and the C31 hopane ββ/(αβ + ββ) index as a peat-specific hopane-based pH proxy to reconstruct fossil pH conditions26.
Coverage:
Latitude: -73.568390 * Longitude: -107.091530
Date/Time Start: 2017-02-21T01:21:00 * Date/Time End: 2017-02-23T03:51:00
Minimum DEPTH, sediment/rock: 26.85 m * Maximum DEPTH, sediment/rock: 29.66 m
Event(s):
PS104_20-2 (PIT-3) * Latitude: -73.568390 * Longitude: -107.091530 * Date/Time Start: 2017-02-21T01:21:00 * Date/Time End: 2017-02-23T03:51:00 * Elevation: -946.0 m * Recovery: 5.89 m * Location: Amundsen Sea * Campaign: PS104 (ANT-XXXII/3) * Basis: Polarstern * Method/Device: MeBo70 (MeBo70) * Comment: PIT-3: Southern Pine Island Trough (north of basement-sedimentary strata boundary; area of dipping reflectors near seafloor surface; same site as GC PS104/20-1; near site PIT-06)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample number | Sample no | Salzmann, Ulrich | |||
| 2 | Core | Core | Salzmann, Ulrich | |||
| 3 | Depth, section | Depth sect | cm | Salzmann, Ulrich | ||
| 4 | DEPTH, sediment/rock | Depth sed | m | Salzmann, Ulrich | Geocode – mbsf | |
| 5 | C31 alpha beta S homohopane | C31abS homohopane | Salzmann, Ulrich | |||
| 6 | C31 alpha beta R homohopane | C31abR homohopane | Salzmann, Ulrich | |||
| 7 | C31 beta beta homohopane | C31 bb homohopane | Salzmann, Ulrich | |||
| 8 | C31 alpha beta 22S homohopane/alpha beta+beta beta ratio | C31 hopane ab22S/ab+bb | Salzmann, Ulrich | |||
| 9 | C31 hopane beta beta/alpha beta+beta beta ratio | C31 hopane bb/ab+bb | Salzmann, Ulrich | |||
| 10 | pH | pH | Salzmann, Ulrich |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
72 data points