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  • 1
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    Comparison of δ¹⁸O, Sr/Ca and U/Ca results of recent corals BDA18-1B and BDA135-223 from Bermuda
    PANGAEA
    In:  Supplement to: Cardinal, Damien; Hamelin, Bruno; Bard, Edouard; Pätzold, Jürgen (2001): Sr/Ca, U/Ca and d18O records in recent massive corals from Bermuda: relationships with sea surface temperature. Chemical Geology, 176(1-4), 213-233, https://doi.org/10.1016/S0009-2541(00)00396-X
    Details
    Publication Date: 2023-05-12
    Description: High-resolution records of Sr/Ca, U/Ca ratios and d18O have been obtained in two recent colonies of massive corals (Diploria labyrinthiformis) from Bermuda. The three geochemical proxies display regular seasonal variations and are well correlated with each other. However, some important discrepancies are observed between the two colonies: the average seasonal variations of the three geochemical proxies are lower by almost 50% in one of the profiles, where the seasonal oscillation also displays a strong asymmetry, with narrower summer maxima. Different calculations are discussed for calibrating Sr/Ca and d18O with sea surface temperatures (SST). We show that the method using only temperature minima and maxima is slightly more accurate and is also more reliable. Our results from Bermuda corals confirm that the temperature dependency of Sr/Ca, U/Ca and d18O is species-dependent, as previously shown by others and that "vital effects" are clearly involved in the geochemical incorporation of trace elements in the coral skeleton. Finally, a simple model involving seasonal variation of the growth rate and a kinetic fractionation related to growth rate is presented to explain the differences between the two Bermuda colonies. It is shown that these factors may prevent corals from recording the complete temperature seasonality and could be the cause for the discrepancies observed between profiles, resulting in significant biases of the SST reconstructions.
    Keywords: Center for Marine Environmental Sciences; GeoB; Geosciences, University of Bremen; MARUM
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 2
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    (Appendix A) Comparison of δ¹⁸O, Sr/Ca and U/Ca results of BDA135-223 (North Rock, Bermuda)
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: BDA135-223; Bermuda84; Bermuda Bio Station; Center for Marine Environmental Sciences; Core wireline system; CWS; DISTANCE; GeoB; Geosciences, University of Bremen; MARUM; Mass spectrometer Finnigan MAT 251; North Rock Bermuda; Sample ID; Strontium/Calcium ratio; Uranium/Calcium ratio; δ18O, skeletal carbonate
    Type: Dataset
    Format: text/tab-separated-values, 649 data points
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  • 3
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    (Appendix B) Comparison of δ¹⁸O, Sr/Ca and U/Ca results of BDA18-1B (North East Breakers, Bermuda)
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: BDA18-1B; Bermuda84; Bermuda Bio Station; Center for Marine Environmental Sciences; Core wireline system; CWS; DISTANCE; GeoB; Geosciences, University of Bremen; MARUM; Mass spectrometer Finnigan MAT 251; Northeast Breakers, Bermuda; Sample ID; Strontium/Calcium ratio; Uranium/Calcium ratio; δ18O, skeletal carbonate
    Type: Dataset
    Format: text/tab-separated-values, 239 data points
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  • 4
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    Isotope analysis, age calculation and calcite concentration from IODP Hole 310-M0005D (2012)
    PANGAEA
    In:  Supplement to: Thomas, Alexander L; Fujita, Kazuhiko; Iryu, Yasufumi; Bard, Edouard; Cabioch, Guy; Camoin, Gilbert; Cole, Julia E; Deschamps, Pierre; Durand, Nicolas; Hamelin, Bruno; Heindel, Katrin; Henderson, Gideon M; Mason, Andrew J; Matsuda, Hiroki; Menabreaz, Lucie; Omori, Akitoshi; Quinn, Terry; Sakai, Saburo; Sato, Tokiyuki; Sugihara, Kaoru; Takahashi, Yasunari; Thouveny, Nicolas; Tudhope, Alexander W; Webster, Jody M; Westphal, Hildegard; Yokoyama, Yusuke (2012): Assessing subsidence rates and paleo water-depths for Tahiti reefs using U-Th chronology of altered corals. Marine Geology, 295-298, 86-94, https://doi.org/10.1016/j.margeo.2011.12.006
    Details
    Publication Date: 2024-01-25
    Description: We present uranium-thoriumchronology for a 102 mcore through a Pleistocene reef at Tahiti (French Polynesia) sampled during IODP Expedition 310 "Tahiti Sea Level". We employ total and partial dissolution procedures on the older coral samples to investigate the diagenetic overprint of the uranium-thoriumsystem. Although alteration of the U-Th system cannot be robustly corrected, diagenetic trends in the U-Th data, combined with sea level and subsidence constraints for the growth of the corals enables the age of critical samples to be constrained to marine isotope stage 9. We use the ages of the corals, together with d18O based sea-level histories, to provide maximum constraints on possible paleo water-depths. These depth constraints are then compared to independent depth estimates based on algal and foraminiferal assemblages, microbioerosion patterns, and sedimentary facies, confirming the accuracy of these paleo water-depth estimates. We also use the fact that corals could not have grown above sea level to place amaximumconstraint on the subsidence rate of Tahiti to be 0.39 m ka**-1,with the most likely rate being close to the existing minimum estimate of 0.25m ka**-1.
    Keywords: 310-M0005D; DP Hunter; DRILL; Drilling/drill rig; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
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    (Appendix 1) Coral analysis and isostatic rebound effects from different Holes of IODP Expedition 310 (2012)
    PANGAEA
    In:  Supplement to: Deschamps, Pierre; Durand, Nicolas; Bard, Edouard; Hamelin, Bruno; Camoin, Gilbert; Thomas, Alexander L; Henderson, Gideon M; Okuno, Junichi; Yokoyama, Yusuke (2012): Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago. Nature, 483, 559-564, https://doi.org/10.1038/nature10902
    Details
    Publication Date: 2024-01-25
    Description: Past sea-level records provide invaluable information about the response of ice sheets to climate forcing. Some such records suggest that the last deglaciation was punctuated by a dramatic period of sea-level rise, of about 20 metres, in less than 500 years. Controversy about the amplitude and timing of this meltwater pulse (MWP-1A) has, however, led to uncertainty about the source of the melt water and its temporal and causal relationships with the abrupt climate changes of the deglaciation. Here we show that MWP-1A started no earlier than 14,650 years ago and ended before 14,310 years ago, making it coeval with the Bølling warming. Our results, based on corals drilled offshore from Tahiti during Integrated Ocean Drilling Project Expedition 310, reveal that the increase in sea level at Tahiti was between 12 and 22 metres, with a most probable value between 14 and 18 metres, establishing a significant meltwater contribution from the Southern Hemisphere. This implies that the rate of eustatic sea-level rise exceeded 40 millimetres per year during MWP-1A.
    Keywords: 310-M0005A; 310-M0005C; 310-M0005D; 310-M0007A; 310-M0007B; 310-M0009A; 310-M0015A; 310-M0016A; 310-M0018A; 310-M0019A; 310-M0020A; 310-M0021A; 310-M0021B; 310-M0023A; 310-M0023B; 310-M0024A; 310-M0025B; 310-M0026A; Age, dated; Age, dated standard deviation; Analytical method; Area/locality; Calculated; Coral; Depth, reconstructed; DEPTH, water; Description; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Mass spectrometer Thermal Ionization, VG-54; Normalized, NBS; Number; Sample code/label; TAH-01A-3; TAH-01A-3A; TAH-02A-4F; TAH-02A-4G; TAH-02A-4H; TAH-02A-5; TAH-02A-5D; TAH-02A-5F; TAH-02A-5H; TAH-02A-5I; TAH-03A-1; TAH-03A-1A; TAH-03A-1E; TAH-03A-3; TAH-03A-3A; TAH-03A-4; TAH-03A-4B; TAH-03A-4C; Tahiti, offshore Faaa; Tahiti, offshore Maraa; Tahiti, offshore Tiarei; Tahiti Sea Level; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232; Thorium-232, standard deviation; 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
    Type: Dataset
    Format: text/tab-separated-values, 1972 data points
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  • 6
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    (Table 2) Age calculation and calcite concentration from IODP Hole 310-M0005D (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Keywords: 310-M0005D; Age, standard deviation; Age model; Calcite; Calcite, standard deviation; Calculated; DEPTH, sediment/rock; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Residual; Sample, optional label/labor no; Sample code/label; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 176 data points
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    DATA PANGAEA
  • 7
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    (Table 1) Uranium and thorium concentrations as well as isotope ratios from IODP Hole 310-M0005D (2012)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Keywords: 310-M0005D; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp310; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Reference/source; Sample, optional label/labor no; Sample code/label; TAH-03A-4C; Tahiti, offshore Maraa; Tahiti Sea Level; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232; Thorium-232, standard deviation; Thorium-232/Uranium-238 activity ratio; Thorium-232/Uranium-238 activity ratio, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 244 data points
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    DATA PANGAEA
  • 8
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    (Table S1) Uranium and Thorium isotopes and U/Th ages of IODP Exp310 cores from offshore Tahiti (2009)
    PANGAEA
    In:  Supplement to: Thomas, Alexander L; Henderson, Gideon M; Deschamps, Pierre; Yokoyama, Yusuke; Mason, Andrew J; Bard, Edouard; Hamelin, Bruno; Durand, Nicolas; Camoin, Gilbert (2009): Penultimate deglacial sea-level timing from Uranium/Thorium dating of Tahitian corals. Science, 324(5931), 1186-1189, https://doi.org/10.1126/science.1168754
    Details
    Publication Date: 2024-01-25
    Description: The timing of sea-level change provides important constraints on the mechanisms driving Earth's climate between glacial and interglacial states. Fossil corals constrain the timing of past sea level by their suitability for dating and their growth position close to sea level. The coral-derived age for the last deglaciation is consistent with climate change forced by Northern Hemisphere summer insolation (NHI), but the timing of the penultimate deglaciation is more controversial. We found, by means of uranium/thorium dating of fossil corals, that sea level during the penultimate deglaciation had risen to ~85 meters below the present sea level by 137,000 years ago, and that it fluctuated on a millennial time scale during deglaciation. This indicates that the penultimate deglaciation occurred earlier with respect to NHI than the last deglacial, beginning when NHI was at a minimum.
    Keywords: 310-M0005D; 310-M0009B; 310-M0009C; 310-M0009D; 310-M0009E; 310-M0019A; 310-M0020A; AGE; Age, standard deviation; Area/locality; Calcite; Calcite, standard deviation; Calculated, see reference(s); Coral; Depth, reconstructed; Description; DP Hunter; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Exp310; Hafniasphaera spp.; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Multi-collector inductively coupled plasma mass spectrometer (MC-ICP-MS); Sample code/label; TAH-01A-3; TAH-01A-3A; TAH-02A-5A; TAH-02A-5B; TAH-02A-5C; TAH-02A-5E; TAH-03A-4C; Tahiti, offshore Faaa; Tahiti, offshore Maraa; Tahiti, offshore Tiarei; Tahiti Sea Level; Thorium-230/Uranium-238 activity ratio; Thorium-230/Uranium-238 activity ratio, standard deviation; Thorium-232, standard deviation; Thorium-232/Uranium-238 activity ratio; Thorium-232/Uranium-238 activity ratio, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation; Uranium-238; Uranium-238, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 678 data points
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  • 9
    Electronic Resource
    Electronic Resource
    Karstification as geomorphological evidence of river incision: the karst of Cousance and the Marne valley (eastern Paris Basin) (2004)
    Oxford, UK : Blackwell Science Ltd
    Terra nova 16 (2004), S. 0 
    Details
    ISSN: 1365-3121
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Cousance karst (located between the valleys of the Saulx and Marne) has been studied to determine the temporal records of river incision in the eastern Paris Basin, around the ANDRA experimental nuclear waste repository. Two generations of karst are recognized. The first is a palaeophreatic karst indicative of an old base level, now uplifted +75 m above the underground streams. It is underlain and drained by a second generation of karst with active sinks, which records the vertical evolution following the entrenchment of the River Marne. Ten U/Th dates of speleothems from shafts in the karst show that there were discontinuous growth episodes, mainly during isotopic stages 3 and 5 (between 102.4 ± 1.2 and 49.4 ± 0.4 ka bp) but also during isotopic stage 2 at 16.3 ± 0.1 and 20.9 ± 0.3 ka bp. These dates provide an absolute age limit for the start of vertical development of the karst, at the latest during isotope stage 5c.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3121.2004.00544.x
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  • 10
    Electronic Resource
    Electronic Resource
    Geochemistry of basalts from the Tyrrhenian Sea (1979)
    [s.l.] : Nature Publishing Group
    Nature 278 (1979), S. 832-834 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Comparison between the Tyrrhenian basalts and oceanic basalts coming from different geodynamic environments shows that Tyrrhenian basalts have a clear organic signature with a transitional ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/278832a0
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    Paper (German National Licenses)
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