Free Content Early diagenesis of calcium carbonate in Long Island Sound sediments: Benthic fluxes of Ca2+ and minor elements during seasonal periods of net dissolution

Download Article:

Abstract:

The present study confirms the quantitative significance of carbonate dissolution for associated major and minor element solute fluxes in shelf deposits of temperate regions. Multiple measurement techniques all demonstrate that net dissolution of CaCO3 dominates during winter in Long Island Sound sediments and results in large fluxes of Ca2+, Sr2+, and F- out of the seafloor. Ca2+ fluxes averaged from 4 independent methods range from ~5 to ~13 mmol m-2 d-1 with highest flux occurring when surface deposits are most undersaturated with respect to common biogenic carbonates. A significant proportion of dissolution, 40-100%, results from oxidation of reduced metabolites such as FeS, NH+4, and Mn2+. Results suggest that 90% of the CaCO3 precipitated each year is dissolved, equivalent to a loss of ~90-190 g CaCO3 m-2 yr-1. Given the general similarity between Long Island Sound and other muddy coastal estuaries along the eastern coast of North America and elsewhere (e.g. Chesapeake Bay, Delaware Bay, Narragansett Bay, Buzzards Bay, Casco Bay), these relative flux measurements are likely to be indicative of much larger temperate regions.

Document Type: Research Article

DOI: http://dx.doi.org/10.1357/002224001762674935

Publication date: September 1, 2001

More about this publication?
  • The Journal of Marine Research publishes peer-reviewed research articles covering a broad array of topics in physical, biological and chemical oceanography. Articles that deal with processes, as well as those that report significant observations, are welcome. In the area of biology, studies involving coupling between ecological and physical processes are preferred over those that report systematics. Authors benefit from thorough reviews of their manuscripts, where an attempt is made to maximize clarity. The time between submission and publication is kept to a minimum; there is no page charge.
  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • ingentaconnect is not responsible for the content or availability of external websites
Related content

Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more