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Wu, Xinying; Hu, Yue; Nan, Jingbo; Yao, Weiqi (2024): Multi-proxy reconstructions of productivity during the late Miocene [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.973162

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Published: 2024-11-11 • DOI registered: 2024-11-11

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Abstract:
The Late Miocene Biogenic Bloom (LMBB), marked by notable increases in biogenic components in marine sediments, provides insights into the response of the biological pump to climate change. However, understanding the timing, distribution, and cause of the LMBB remains limited. We use marine barite, a refractory mineral precipitating from the water column associated with carbon export, and other proxies (bio-SiO2 MAR, CaCO3 MAR) to reconstruct productivity in the equatorial Indian Ocean and equatorial western Atlantic between 12 and 5 Ma. At the same time, we compiled bio-SiO2 MAR data from 21 sites in the global ocean during the late Miocene. Multi-proxy records reveal the onset of the LMBB in the equatorial Indian Ocean at ~9 Ma, primarily driven by more vigorous upwelling during global cooling. We suggest that the steepened meridional temperature gradient and the Antarctic ice sheet expansion have strengthened ocean overturning, facilitating nutrient supply and biogenic bloom in upwelling regions.
Keyword(s):
Biogenic bloom; Late Miocene; Marine barite; productivity proxies; Upwelling
Supplement to:
Wu, Xinying; Hu, Yue; Nan, Jingbo; Yao, Weiqi (2024): A Marine Barite Perspective of the Late Miocene Biogenic Bloom in the Equatorial Indian Ocean and Equatorial Western Atlantic Ocean. Geophysical Research Letters, 51(22), e2024GL111748, https://doi.org/10.1029/2024GL111748
References:
Dymond, Jack R; Suess, Erwin; Lyle, Mitchell W (1992): Barium in Deep‐Sea Sediment: A Geochemical Proxy for Paleoproductivity. Paleoceanography, 7(2), 163-181, https://doi.org/10.1029/92PA00181
Eagle, Meagan; Paytan, Adina; Arrigo, Kevin R; van Dijken, Gert L; Murray, Richard W (2003): A comparison between excess barium and barite as indicators of carbon export. Paleoceanography, 18(1), 1021, https://doi.org/10.1029/2002PA000793
Gradstein, Felix M; Ogg, James G; Schmitz, Mark D; Ogg, Gabi (2020): Geologic Time Scale 2020. Elsevier, https://doi.org/10.1016/C2020-1-02369-3
Lyle, Mitchell W; Drury, Anna Joy; Tian, Jun; Wilkens, Roy H; Westerhold, Thomas (2019): Late Miocene to Holocene high-resolution eastern equatorial Pacific carbonate records: stratigraphy linked by dissolution and paleoproductivity. Climate of the Past, 15(5), 1715-1739, https://doi.org/10.5194/cp-15-1715-2019
Mortlock, Richard A; Froelich, Philip N (1989): A simple method for the rapid determination of biogenic opal in pelagic marine sediments. Deep Sea Research Part A. Oceanographic Research Papers, 36(9), 1415-1426, https://doi.org/10.1016/0198-0149(89)90092-7
Paytan, Adina; Kastner, Miriam; Martin, Ellen E; Macdougall, J D; Herbert, Timothy D (1993): Marine barite as a monitor of seawater strontium isotope composition. Nature, 366(6454), 445-449, https://doi.org/10.1038/366445a0
Shipboard Scientific Party (1989): Ninetyeast Ridge Summary. In: Peirce, J, Weissel, J, et al. (eds.), Proceedings of the Ocean Drilling Program, 121 Initial Reports, Proceedings of the Ocean Drilling Program, 121, Ocean Drilling Program, https://doi.org/10.2973/odp.proc.ir.121.115.1989
Shipboard Scientific Party (1995): Leg 154 synthesis. In: Curry, WB, Shackleton, NJ, Richter, C, et al. (eds.), Proceedings of the Ocean Drilling Program, 154 Initial Reports, Proceedings of the Ocean Drilling Program, 154, Ocean Drilling Program, https://doi.org/10.2973/odp.proc.ir.154.109.1995
Funding:
National Key Research and Development Program of China, grant/award no. 2022YFF0802900
National Natural Science Foundation of China (NSFC), grant/award no. 42376049
Natural Science Foundation of Guangdong Province, grant/award no. 2024A1515012537
Shenzhen Municipal Science and Technology Innovation Council (SUSTech), grant/award no. 20231114150312001
Coverage:
Median Latitude: 7.778638 * Median Longitude: 15.886679 * South-bound Latitude: -41.136060 * West-bound Longitude: -127.783000 * North-bound Latitude: 67.225000 * East-bound Longitude: 158.498200
Date/Time Start: 1982-11-19T00:00:00 * Date/Time End: 1999-03-10T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
3 datasets

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Datasets listed in this bundled publication

  1. Wu, X; Hu, Y; Nan, J et al. (2024): Accumulation rates of biogenic components of ODP Hole 121-758A. https://doi.org/10.1594/PANGAEA.973164
  2. Wu, X; Hu, Y; Nan, J et al. (2024): Accumulation rates of biogenic components of ODP Hole 154-926B. https://doi.org/10.1594/PANGAEA.973165
  3. Wu, X; Hu, Y; Nan, J et al. (2024): Data compilation of bio-SiO2 MAR from 21 sites. https://doi.org/10.1594/PANGAEA.973163