title: Large groundwater strontium flux to the oceans from the Bengal Basin and the marine strontium isotope record.
abstract: Strontium concentration and isotopic data for subsurface flowing groundwaters of the Ganges-Brahmaputra (G-B) delta in the Bengal Basin demonstrate that this is a potentially significant source of strontium to the oceans, equal in magnitude to the dissolved strontium concentration carried to the oceans by the G-B river waters. The strontium concentrations of groundwaters are higher by a factor of about 10 than typical G-B river waters and they have similar 87Sr/86Sr ratio to the river waters. These new data suggest that the present contribution of the G-B system to the rise in 87Sr/86Sr ratio in seawater is higher by at least a factor of 2 to 5 than the average over the past 40 million years.
authors.affiliation: Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA. abasu@earth.rochester.edu
authors.forename: A R
authors.initials: AR
authors.lastname: Basu
authors.forename: S B
authors.initials: SB
authors.lastname: Jacobsen
authors.forename: R J
authors.initials: RJ
authors.lastname: Poreda
authors.forename: C B
authors.initials: CB
authors.lastname: Dowling
authors.forename: P K
authors.initials: PK
authors.lastname: Aggarwal