Abstract:

Sediment grain size and composition. Sediment texture and composition data are generated for selected core sub-samples at 2mm sampling intervals for “surficial unit” and 5mm sampling resolution intervals to base of cores. Sediment texture values are expressed as % Gravel, % Sand, % Silt and % Clay. % Mud can be calculated by combining % Silt and % Clay. Sediment composition is expressed as % TOM (Total Organic Matter) measured by Loss on Ignition (LOI), % Carbonate content measured by acid leaching, and the % Insoluble Residue (IR), which is likely dominated by terrigenous clastic (land-derived) sediment sources.

Suggested Citation:

Brooks, Gregg, and Rebekka Larson. 2014. Sediment texture and composition, NE Gulf of Mexico, 2010-2013.. Distributed by: Gulf of Mexico Research Initiative Information and Data Cooperative (GRIIDC), Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N70K26H7

Publications:

Brooks, G. R., Larson, R. A., Schwing, P. T., Romero, I., Moore, C., Reichart, G.-J., … Hollander, D. (2015). Sedimentation Pulse in the NE Gulf of Mexico following the 2010 DWH Blowout. PLoS ONE, 10(7), e0132341. doi:10.1371/journal.pone.0132341

Hastings, D. W., Schwing, P. T., Brooks, G. R., Larson, R. A., Morford, J. L., Roeder, T., … Hollander, D. J. (2014). Changes in sediment redox conditions following the BP DWH blowout event. Deep Sea Research Part II: Topical Studies in Oceanography. doi:10.1016/j.dsr2.2014.12.009

Ellis, S., & Fillingham, K. (2019). The Gulf of Mexico Research Initiative Information and Data Cooperative: Data Transparency and Data Sharing + Classroom Activity. Current: The Journal of Marine Education, 33(1), 42. doi:10.5334/cjme.24

Purpose:

Determine sediment grain size and composition

Data Parameters and Units:

Site ID, Latitude (decimal degrees), Longitude (decimal degrees), Water depth (m), Core Collection date (MM/DD/YYYY), Laboratory/Facility, Core ID, Top Sample Depth (mm), Bottom Sample Depth (mm), Average Sample Depth (mm), % Gravel, % Sand, % Silt, % Clay, % Carbonate Content by weight (g), % TOM Total Organic Matter (LOI) by weight (g).

Methods:

Wet sieve, Pippette, Acid Leaching, Loss on Ignition

Individual Files: