Articles | Volume 15, issue 21
https://doi.org/10.5194/bg-15-6387-2018
https://doi.org/10.5194/bg-15-6387-2018
Research article
 | 
30 Oct 2018
Research article |  | 30 Oct 2018

Macrofaunal burrowing enhances deep-sea carbonate lithification on the Southwest Indian Ridge

Hengchao Xu, Xiaotong Peng, Shun Chen, Jiwei Li, Shamik Dasgupta, Kaiwen Ta, and Mengran Du

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Cited articles

Aller, J. Y. and Aller, R. C.: Evidence for localized enhancement of biological associated with tube and burrow structures in deep-sea sediments at the HEEBLE site, western North Atlantic, Deep-Sea Res. Pt. I, 33, 755–790, https://doi.org/10.1016/0198-0149(86)90088-9, 1986. 
Aller, R. C.: Carbonate dissolution in nearshore terrigenous muds: the role of physical and biological reworking, J. Geol., 90, 79–95, 1982. 
Aller, R. C. and Rude, P. D.: Complete oxidation of solid phase sulfides by manganese and bacteria in anoxic marine sediments, Geochim. Cosmochim. Acta, 52, 751–765, https://doi.org/10.1016/0016-7037(88)90335-3, 1988. 
Anderson, T., Donnelly, T., Drever, J., Eslinger, E., Gieskes, J., Kastner, M., Lawrence, J., and Perry, E.: Geochemistry and diagenesis of deep-sea sediments from Leg 35 of the Deep Sea Drilling Project, Nature, 261, 473–476, https://doi.org/10.1038/261473a0, 1976. 
Arumugm, Y., Gupta, A. K., and Panigrahi, M. K.: Species diversity variations in Neogene deep-sea benthic foraminifera at ODP Hole 730A, western Arabian Sea, J. Earth Syst. Sci., 123, 1671–1680, https://doi.org/10.1007/s12040-014-0495-z, 2014. 
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Short summary
Processes involved in the formation of deep-sea carbonate rocks remain controversial. It is reported in present study that macrofaunal burrowing may trigger the dissolution of the original calcite above the saturation horizon and thus drive deep-sea carbonate lithification on mid-ocean ridges. The novel mechanism proposed here for nonburial carbonate lithification at the deep-sea seafloor sheds light on the potential interactions between deep-sea biota and sedimentary rocks.
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