Scanning XRF and environmental magnetic data across the Miocene-Pliocene boundary from ODP Site 967 (Eastern Mediterranean)

doi:doi:10.1594/PANGAEA.945975

Scanning XRF and environmental magnetic data across the Miocene-Pliocene boundary from ODP Site 967 (Eastern Mediterranean)

The Mediterranean was partially desiccated as the Atlantic-Gibraltar gateway was closed ~6 million years (Ma) ago. The gateway collapsed at ~5.33 Ma (Miocene-Pliocene boundary), resulting in a catastrophic flood which refilled the basin within 2 years. Here we use scanning x-Ray fluorescence (XRF) and anhysteretic remanent magnetization (ARM) data from ODP Site 967 (eastern Mediterranean) to analyze the nature of sediment deposition across the flooding event (5.35-5.12 Ma). Scanning XRF was measured with a 3rd generation Avaatech XRF core scanner. Element 'counts' for the entire interval were converted into element concentrations by multivariate log-ratio calibration, using new wavelength dispersive (WD)-XRF reference element concentrations. XRF data (Ba/Ti filter) was used to generate the chronology, by tuning Ba/Ti peaks to insolation maxima (precession minima). ODP967 U-channel samples were sliced at 1-cm intervals into discrete non-magnetic 2×2×2 cm plastic cubes and measured for ARM on a 2-G Enterprises cryogenic magnetometer.

BibTex:

@dataset{Amarathunga_Udara_and_Hogg_Andrew_McC_and_Rohling_Eelco_J_and_Roberts_Andrew_and_Grant_Katharine_M_and_Heslop_David_and_Hu_Pengxiang_and_Liebrand_Diederik_and_Westerhold_Thomas_and_Zhao_Xiang_and_Gilmore_Stewart_2024,
    abstract = {The Mediterranean was partially desiccated as the Atlantic-Gibraltar gateway was closed ~6 million years (Ma) ago. The gateway collapsed at ~5.33 Ma (Miocene-Pliocene boundary), resulting in a catastrophic flood which refilled the basin within 2 years. Here we use scanning x-Ray fluorescence (XRF) and anhysteretic remanent magnetization (ARM) data from ODP Site 967 (eastern Mediterranean) to analyze the nature of sediment deposition across the flooding event (5.35-5.12 Ma). Scanning XRF was measured with a 3rd generation Avaatech XRF core scanner. Element 'counts' for the entire interval were converted into element concentrations by multivariate log-ratio calibration, using new wavelength dispersive (WD)-XRF reference element concentrations. XRF data (Ba/Ti filter) was used to generate the chronology, by tuning Ba/Ti peaks to insolation maxima (precession minima). ODP967 U-channel samples were sliced at 1-cm intervals into discrete non-magnetic 2×2×2 cm plastic cubes and measured for ARM on a 2-G Enterprises cryogenic magnetometer.},
    author = {Amarathunga, Udara and Hogg, Andrew McC and Rohling, Eelco J and Roberts, Andrew and Grant, Katharine M and Heslop, David and Hu, Pengxiang and Liebrand, Diederik and Westerhold, Thomas and Zhao, Xiang and Gilmore, Stewart},
    doi = {10.1594/PANGAEA.945975},
    institution = {PANGAEA (Lithosphere)},
    keyword = {'Mediterranean', 'Messinian Salinity Crisis', 'Pliocene', 'Zanclean megaflood'},
    month = {nov},
    title = {Scanning XRF and environmental magnetic data across the Miocene-Pliocene boundary from ODP Site 967 (Eastern Mediterranean)},
    url = {https://service.tib.eu/ldmservice/vdataset/png-doi-10-1594-pangaea-945975},
    year = {2024}
}