Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Spiegel, Cornelia; Kohn, Barry; Raza, Asaf; Rainer, Thomas; Gleadow, Andrew (2007): Age and chemical composition of apatites from five DSDP and ODP Sites in the Pacific, Atlantic and Indian Oceans. PANGAEA, https://doi.org/10.1594/PANGAEA.704785, Supplement to: Spiegel, C et al. (2007): The effect of long-term low-temperature exposure on apatite fission track stability: A natural annealing experiment in the deep ocean. Geochimica et Cosmochimica Acta, 71(18), 4512-4537, https://doi.org/10.1016/j.gca.2007.06.060

Always quote above citation when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Since studies on deep-sea cores were carried out in the early 1990s it has been known that ambient temperature may have a marked affect on apatite fission track annealing. Due to sluggish annealing kinetics, this effect cannot be quantified by laboratory annealing experiments. The unknown amount of low-temperature annealing remains one of the main uncertainties for extracting thermal histories from fission track data, particularly for samples which experienced slow cooling in shallow crustal levels. To further elucidate these uncertainties, we studied volcanogenic sediments from five deep-sea drill cores, that were exposed to maximum temperatures between ~10° and 70°C over geological time scales of ~15–120 Ma. Mean track lengths (MTL) and etch pit diameters (Dpar) of all samples were measured, and the chemical composition of each grain analyzed for age and track length measurements was determined by electron microprobe analysis. Thermal histories of the sampled sites were independently reconstructed, based on vitrinite reflectance measurements and/or 1D numerical modelling. These reconstructions were used to test the most widely used annealing models for their ability to predict low-temperature annealing. Our results show that long-term exposure to temperatures below the temperature range of the nominal apatite fission track partial annealing zone results in track shortening ranging between 4 and 11%. Both chlorine content and Dpar values explain the downhole annealing patterns equally well. Low chlorine apatite from one drill core revealed a systematic relation between Si-content and Dpar value. The question whether Si-substitution in apatite has direct and systematic effects on annealing properties however, cannot be addressed by our data. For samples, which remained at temperatures <30°C, and which are low in chlorine, the Laslett et al. [Laslett G., Green P., Duddy I. and Gleadow A. (1987) Thermal annealing of fission tracks in apatite. Chem. Geol. 65, 1–13] annealing model predicts MTL up to 0.6 µm longer than those actually measured, whereas for apatites with intermediate to high chlorine content, which experienced temperatures >30°C, the predictions of the Laslett et al. (1987) model agree with the measured MTL data within error levels. With few exceptions, predictions by the Ketcham et al. [Ketcham R., Donelick R. and Carlson W. (1999) Variability of apatite fission-track annealing kinetics. III: Extrapolation to geological time scales. Am. Mineral. 84/9, 1235–1255] annealing model are consistent with the measured data for samples which remained at temperatures below ~30°C. For samples which experienced maximum temperatures between ~30 and 70°C, and which are rich in chlorine, the Ketcham et al. (1999) model overestimates track annealing.
Coverage:
Median Latitude: 12.049867 * Median Longitude: -9.030880 * South-bound Latitude: -31.030000 * West-bound Longitude: -78.740300 * North-bound Latitude: 31.186800 * East-bound Longitude: 152.322900
Date/Time Start: 1975-07-24T00:00:00 * Date/Time End: 1996-01-29T11:30:00
Event(s):
121-755 * Latitude: -31.030000 * Longitude: 93.546700 * Date/Time Start: 1988-05-22T00:00:00 * Date/Time End: 1988-05-24T00:00:00 * Elevation: -1069.0 m * Penetration: 208.4 m * Recovery: 80.2 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg121 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 19 cores; 178.4 m cored; 0 m drilled; 45% recovery
121-755A * Latitude: -31.030000 * Longitude: 93.546700 * Date/Time Start: 1988-05-22T15:00:00 * Date/Time End: 1988-05-24T07:30:00 * Elevation: -1069.0 m * Penetration: 208.4 m * Recovery: 80.21 m * Location: South Indian Ridge, South Indian Ocean * Campaign: Leg121 * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 178.4 m cored; 0 m drilled; 45 % recovery
129-800 * Latitude: 21.923000 * Longitude: 152.322900 * Date/Time Start: 1989-11-26T00:00:00 * Date/Time End: 1989-12-05T00:00:00 * Elevation: -5697.0 m * Penetration: 544.4 m * Recovery: 150.7 m * Location: North Pacific Ocean * Campaign: Leg129 * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 61 cores; 544.4 m cored; 0 m drilled; 27.7% recovery
Size:
15 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text (use the following character encoding: )

Datasets listed in this publication series

  1. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 2) Vitrinite reflectance in sedimentary rocks from DSDP Site 43-386. https://doi.org/10.1594/PANGAEA.704770
  2. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 2) Vitrinite reflectance in sedimentary rocks from DSDP Site 47-397. https://doi.org/10.1594/PANGAEA.704771
  3. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 2) Vitrinite reflectance in sedimentary rocks from ODP Site 121-755. https://doi.org/10.1594/PANGAEA.704769
  4. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 3) Results of apatite fission track dating, DSDP Site 43-386. https://doi.org/10.1594/PANGAEA.704775
  5. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 3) Results of apatite fission track dating, DSDP Site 47-397. https://doi.org/10.1594/PANGAEA.704776
  6. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 3) Results of apatite fission track dating, ODP Site 121-755A. https://doi.org/10.1594/PANGAEA.704772
  7. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 3) Results of apatite fission track dating, ODP Site 165-999A. https://doi.org/10.1594/PANGAEA.704774
  8. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Table 3) Results of apatite fission track dating, ODP Site 165-999B. https://doi.org/10.1594/PANGAEA.704777
  9. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from DSDP Site 43-386. https://doi.org/10.1594/PANGAEA.704782
  10. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from DSDP Site 47-397. https://doi.org/10.1594/PANGAEA.704783
  11. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from DSDP Site 47-397A. https://doi.org/10.1594/PANGAEA.704784
  12. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from ODP Site 121-755A. https://doi.org/10.1594/PANGAEA.704778
  13. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from ODP Site 129-800. https://doi.org/10.1594/PANGAEA.704779
  14. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from ODP Site 165-999A. https://doi.org/10.1594/PANGAEA.704780
  15. Spiegel, C; Kohn, B; Raza, A et al. (2007): (Tables 5-6) Composition of apatites from ODP Site 165-999B. https://doi.org/10.1594/PANGAEA.704781