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Cretaceous Oceanic Anoxic Events prolonged by phosphorus cycle feedbacks, data from SN4 and La Bedoule (2020)

Beil, Sebastian ; Kuhnt, Wolfgang ; Holbourn, Ann E ; [et al.]

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Publication Date: 2023-10-28

Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754

Type: Dataset

Format: application/zip, 9 datasets

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New insights into Cenomanian paleoceanography and climate evolution from the Tarfaya Basin, southern Morocco (2018)

Beil, Sebastian ; Kuhnt, Wolfgang ; Holbourn, Ann E ; [et al.]

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In: Supplement to: Beil, Sebastian; Kuhnt, Wolfgang; Holbourn, Ann E; Aquit, Mohamed; Flögel, Sascha; Chellai, El Hassane; Jabour, Haddou (2018): New insights into Cenomanian paleoceanography and climate evolution from the Tarfaya Basin, southern Morocco. Cretaceous Research, 84, 451-473, https://doi.org/10.1016/j.cretres.2017.11.006

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Publication Date: 2023-10-28

Description: A 325 m long continuous succession of uppermost Albian to lower Turonian pelagic (outer shelf) deposits was recovered from a new drill site in the central part of the Tarfaya Basin (southern Morocco). Natural gamma ray wireline logging, carbonate and organic carbon content, bulk carbonate and organic carbon stable isotopes and X-ray fluorescence (XRF)-scanner derived elemental distribution data in combination with planktonic foraminiferal biostratigraphy indicate complete recovery of the Cenomanian Stage. This exceptional sediment archive allows to identify orbitally driven cyclic sedimentation patterns and to evaluate the pacing of climatic events and regional environmental change across the Albian-Cenomanian boundary (ACB), the mid-Cenomanian Event (MCE) and Oceanic Anoxic Event 2 (OAE2) in the latest Cenomanian. The deposition of organic-rich sediments in the Tarfaya Basin, likely driven by upwelling of nutrient-rich water masses, started during the latest Albian and intensified in two major steps following the MCE and the onset of OAE2. The duration and structure of the MCE and OAE2 carbon isotope excursions exhibit striking similarities, suggesting common driving mechanisms and climate-carbon cycle feedbacks. Both events were also associated with eustatic sea level falls, expressed as prominent sequence boundaries in the Tarfaya Basin. Based on the 405 kyr signal imprinted on the Natural Gamma Ray (NGR) and XRF-scanner derived Log(Zr/Rb) records, we estimate the duration of the Cenomanian Stage to be 4.8 ± 0.2 Myr.

Keywords: Climate - Biogeochemistry Interactions in the Tropical Ocean; SFB754

Type: Dataset

Format: application/zip, 5 datasets

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XRF element analysis of IODP Site 353-U1443 (2019)

Lübbers, Julia ; Kuhnt, Wolfgang ; Holbourn, Ann E ; [et al.]

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Publication Date: 2023-07-10

Keywords: 353-U1443B; 353-U1443C; AGE; Aluminium, area, total counts; Barium, area, total counts; Calcium, area, total counts; Carbonate Crash; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp353; Indian Ocean; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Depth Scale Terminology; Iron, area, total counts; Joides Resolution; log-ratio; Potassium, area, total counts; Sample code/label; Section position; Silicon, area, total counts; stable carbon isotopes; stable oxygen isotopes; Titanium, area, total counts; X-ray fluorescence (XRF); XRF

Type: Dataset

Format: text/tab-separated-values, 51737 data points

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Stable carbon and oxygen isotope measurements of Cibicidoides wuellerstorfi and C. mundulus from IODP Site 353-U1443 (2021)

Kochhann, Karlos Guilherme Diemer ; Kuhnt, Wolfgang ; Holbourn, Ann E ; [et al.]

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Publication Date: 2024-01-02

Keywords: 353-U1443A; 353-U1443B; 353-U1443C; AGE; Carbonate Crash; Cibicidoides spp., δ13C; Cibicidoides spp., δ18O; deep water ventilation; Depth, composite; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp353; Integrated Ocean Drilling Program / International Ocean Discovery Program; Intercore correlation; IODP; Isotope ratio mass spectrometry; Joides Resolution; middle Miocene cooling; Miocene Climatic Optimum; Sample code/label; Stable isotopes; X-ray fluorescence scanning

Type: Dataset

Format: text/tab-separated-values, 3548 data points

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