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St. Petersburg Coastal and Marine Science Center

Data Release

Globorotalia truncatulinoides Sediment Trap Data in the Gulf of Mexico

By Caitlin E. Reynolds,1, 2 Julie N. Richey,1 Jennifer S. Fehrenbacher,3 Brad E. Rosenheim,2 and Howard J. Spero4
1 U.S. Geological Survey, St. Petersburg, FL 33701, USA
2 College of Marine Science, University of South Florida, St. Petersburg, FL 33701, USA
3 College of Earth, Ocean and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
4 Department of Earth and Planetary Sciences, University of California Davis, Davis, CA 95616, USA

Summary

Modern observations of planktic foraminifera from sediment trap studies help to constrain the regional ecology of paleoceanographically valuable species. Results from a weekly-resolved sediment trap time series (2008–2014) in the northern Gulf of Mexico demonstrate that 92% of Globorotalia truncatulinoides flux occurs in winter (January, February, and March), and that encrusted and non-encrusted individuals represent calcification in distinct depth habitats. We use individual foraminiferal analysis (IFA) of G. truncatulinoides tests to investigate differences in the elemental (Mg/Ca) and isotopic composition (δ18O and δ13C) of the encrusted and non-encrusted ontogenetic forms of G. truncatulinoides, and to estimate their calcification depth in the northern Gulf of Mexico.

For further information regarding data collection and/or processing methods as well as the associated published manuscript refer to Reynolds, C.E., Richey, J.N., Fehrenbacher, J.S., Rosenheim, B.E., and Spero, H.J., 2018 (in review), Environmental controls on the geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico—Implications for paleoceanographic reconstructions: Marine Micropaleontology.

 

Data

File Name and Description Metadata (XML format) Metadata (text format) Download File
Isotopes.zip
δ18O and δ13C (.csv).
Gtrunc_metadata.xml Gtrunc_metadata.txt Isotopes.zip
(12.2 KB)
Mg_Ca_Compiled_all.zip
Laser ablation (LA-ICP-MS) Mg and Ca values for every measurement on each individual foraminifera (.csv).
Same as above Same as above Mg_Ca_Compiled_all.zip
(2.1 MB)
Mg_Ca_Compiled_averages.zip
Laser ablation (LA-ICP-MS) Mg and Ca values for every measurement averaged for each chamber on each individual foraminifera (.csv).
Same as above Same as above Mg_Ca_Compiled_averages.zip
(29.4 KB)
Raw_Counts_and_Flux_Data.zip
G. truncatulinoides raw counts and flux (.csv).
Same as above Same as above Raw_Counts_and_Flux_Data.zip
(13.5 KB)

Figure 1. Graphic map showing the location of the sediment trap mooring in the Gulf of Mexico at approximately 27.5° N and 90.3° W (black triangle).

Figure 1. Location of the sediment trap mooring in the Gulf of Mexico at approximately 27.5° N and 90.3° W (black triangle).

Suggested Citation

Reynolds, C.E., Richey, J.N., Fehrenbacher, J.S., Rosenheim, B.E., and Spero, H.J., 2018, Globorotalia truncatulinoides sediment trap data in the Gulf of Mexico: U.S. Geological Survey data release, https://doi.org/10.5066/F72806W4.



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