Transportation glacial

Robbins JA (1988) A model for particle-selective transport of tracers in sediments with conveyor-belt deposit feeders. Journal of Geophysical Research 91 8542-8558 Robinson LF, Belshaw NS, Henderson GM (in press) U and Th isotopes in seawater and modem carbonates from the Bahamas. Geochim Cosmochim Acta Rosenthal Y, Boyle EA, Labeyrie L, Oppo D (1995a) Glacial enrichments of authigenic Cd and U in subantarctic sediments A climatic control on the elements oceanic budget Paleoceanography 10(3) 395-413... 

Mobile, on-line XRF methods have been tested in the Au exploration targets. Analysis of continuous till and weathered bedrock samples shows clear variation of the contents of pathfinder elements of hydrothermal alteration. Particularly, in the weathered bedrock, the presence of narrow mineralized veins is seen (Fig. 5). One interesting feature is that the indication of the weathered bedrock sources can be traced 2 to 5 m down-ice in the till. These results suggest very short glacial transport of mineralized debris from the bedrock sources. Information on... 

Hamilton, S.M. 1998. Electrochemical mass transport in overburen a new model to account for the formation of selective leach geochemical anoamalies in Glacial Terren. Journal of Geochemical Exploration, 63, 155-172. 

The neritic sediments surroimding the continent of Antarctica are dominated by glacial marine deposits. Divergence at 60°S causes oceanic upwelling, which transports cold, nutrient-rich waters to the euphotic zone. Since diatoms are the dominant phytoplankton, diatomaceous oozes encircle Antarctica between the latitudes 50° and 70°S. 

The TNB case study shows that iron oxides from till samples down-ice from Ni-Cu massive sulfides have a similar chemical signature to that in magmatic Ni-Cu deposits. Further testing of additional till samples from varying distances down-ice of the TNB would provide further insights into the TNB Ni-Cu deposit signatures and glacial transport distances. 

Chalcopyrite and sperrylite are the most useful metallic indicator minerals identified as they are the most likely to survive glacial transport and surficial weathering. 

Veillette, J.J. 1989. Ice movements, till sheets and glacial transport in Abitibi-Timiskaming, Quebec and Ontario In Drift Prospecting, ed. R.N.W. DiLabio and W.B. Coker Geological survey of Canada Paper 89-20, 139-154. 

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