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  • PANGAEA  (2)
  • 2020-2024  (2)
Document type
Keywords
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  • 1
    facet.materialart.
    Unknown
    Characteristics, elevations and ages of various mid-late Holocene features collected from twelve islands in French Polynesia (2021)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Description: Characteristics, elevations and ages of 165 samples from various mid-late Holocene features, such as in situ Porites microatolls, in situ reef flats, conglomerates and reworked reef blocks, collected from twelve islands in French Polynesia. This table complements the database on which the mid-late Holocene sea-level curve has been initially reconstructed (Hallmann et al., 2018). Δ modern-fossil represents the difference in elevation between modern and Holocene microatolls at the same study site and in a similar environment (maximum vertical error is of ± 2 cm). NGPF = altimetric reference of French Polynesia. The elevations have been corrected for subsidence based on rates of 0.14 mm/yr for Moorea, 0.05 mm/yr for Bora Bora and Tahaa as well as 0.03 mm/yr for Maupiti, the Gambier Islands and Raivavae. Error values for ages and elevations are 2-sigma. Uncertainties for measured elevations related to NGPF are ± 14 cm for samples from Bora Bora, Maupiti, Raivavae, Tikehau and the Gambier Islands; ± 22 cm for samples from Fakarava, Hao, Makemo, Manihi, Moorea, Rangiroa and Tahaa. Uncertainties for estimated elevations are ± 10 cm for Δ modern-fossil and ± 22 cm for NGPF elevations.
    Keywords: AGE; Age, dated standard deviation; Aragonite; Bora Bora; Calculated; Corrected; Diameter; Difference; ELEVATION; Event label; Fakarava; French_Polynesia_BOB; French_Polynesia_FAK; French_Polynesia_GAM; French_Polynesia_HAO; French_Polynesia_MAK; French_Polynesia_MAN; French_Polynesia_MAU; French_Polynesia_MOO; French_Polynesia_RAI; French_Polynesia_RAN; French_Polynesia_TAA; French_Polynesia_TIK; French Polynesia; Gambier; HAND; Hao; LATITUDE; Location; LONGITUDE; low-lying islands; Makemo; Manihi; Maupiti; mid-late Holocene sea level; Moorea; Porites microatolls; Raivavae; Rangiroa; reef development; Sample comment; Sample ID; Sampling by hand; storm deposits; Tahaa; Tikhau; U-series dating
    Type: Dataset
    Format: text/tab-separated-values, 1068 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Uranium/Thorium isotopic composition of various mid-late Holocene features collected from twelve islands in French Polynesia (2021)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Description: Uranium/Thorium isotopic composition of 165 samples from various mid-late Holocene features, such as in situ Porites microatolls, in situ reef flats, conglomerates and reworked reef blocks, collected from twelve islands in French Polynesia. Recommendations of Dutton et al. (2017) were followed for the presentation of U/Th age data. For each parameter, the first column contains the value and the second column the statistical error. All statistical errors are two standard deviations of the mean (2σ mean). All samples have been corrected for initial 230Th by using a 230Th/232Th activity ratio of 0.66 ± 0.2 (Fietzke et al., 2005). Non-reported data consist of 230Th/232Th ratios which became negative due to background corrections. 238U Concentrations are not corrected for the background.
    Keywords: Age, dated; Age, dated standard deviation; Age, Uranium-Thorium; Bora Bora; Calculated; Event label; Fakarava; French_Polynesia_BOB; French_Polynesia_FAK; French_Polynesia_GAM; French_Polynesia_HAO; French_Polynesia_MAK; French_Polynesia_MAN; French_Polynesia_MAU; French_Polynesia_MOO; French_Polynesia_RAI; French_Polynesia_RAN; French_Polynesia_TAA; French_Polynesia_TIK; French Polynesia; Gambier; HAND; Hao; LATITUDE; LONGITUDE; low-lying islands; Makemo; Manihi; Maupiti; mid-late Holocene sea level; Moorea; Porites microatolls; Raivavae; Rangiroa; reef development; Sample ID; Sampling by hand; storm deposits; Tahaa; Thorium-230; Thorium-230, standard deviation; Thorium-230/Thorium-232 activity ratio; Thorium-230/Thorium-232 activity ratio, standard deviation; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, error, relative; Thorium-232; Thorium-232, standard deviation; Tikhau; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation; Uranium-238/Thorium-232 activity ratio; Uranium-238/Thorium-232 activity ratio, standard deviation; U-series dating
    Type: Dataset
    Format: text/tab-separated-values, 3111 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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