Hauptvogel, Daniel et al. (2008): Heavy mineral analysis of offshore sediment cores, East Antarctica

Leg/Site/Hole:
ODP 188
ODP 188 1166
ODP 188 1167
Identifier:
2009-046283
georefid

Creator:
Hauptvogel, Daniel
Montclair State University, Department of Earth and Environmantal Studies, Upper Montclair, NJ, United States
author

Darley, Jason
author

Passchier, Sandra
author

Identification:
Heavy mineral analysis of offshore sediment cores, East Antarctica
2008
In: Anonymous, Geological Society of America, Northeastern Section, 43rd annual meeting
Geological Society of America (GSA), Boulder, CO, United States
40
2
84
The Ocean Drilling Program (ODP) has made efforts to drill a transect of cores in the Prydz Bay area of East Antarctica, located south of the Indian Ocean. It is there that sediment has been deposited, after erosion by the Lambert Glacier, of high grade metamorphic rocks, mafic dikes, felsic igneous intrusions, and siliciclastic sedimentary rocks with coal measures. The core samples were taken from ODP sites 1166 and 1167 for heavy mineral analysis of the sand fraction. The purpose of this study is to characterize the provenance of the sediments and to reconstruct regional changes in ice-flow through time. The portions of the cores that were chosen for analysis had the greatest amount of sand. Samples were sieved to a fraction between 63 and 250 micrometers to acquire the sand fraction and then were further divided through a heavy liquid separation technique to obtain the heavy minerals. The heavy mineral fraction was then put onto microscope slides for mineral analysis. Results included an abundant amount of garnet and hypersthene as well as small amounts of rutile, augite, sillimanite and amphiboles. Preliminary SEM imaging results show well formed garnet and hypersthenes crystals. Continuing work includes an SEM-EDX chemical analysis and complete count/identification of grain mounts.
English
Coverage:Geographic coordinates:
North:-66.2400
West:72.1700East: 74.4800
South:-67.4200

Sedimentary petrology; Antarctica; clastic sediments; cores; East Antarctica; heavy minerals; Leg 188; marine sediments; Ocean Drilling Program; ODP Site 1166; ODP Site 1167; provenance; Prydz Bay; sand; sediments; Southern Ocean;

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