Andrew Cohen ⎮ Deposystem Evolution in the Foreland Basin Lakes of South America

My lab has conducted an extensive investigation of the sedimentology of modern foreland basin lakes, using the Andean foreland as our model system. Most of the stratigraphic and sedimentologic models of tectonic lakes currently available are based on studies of rift basins. However, rifts fill and evolve very differently than forelands due to their different subsidence and  watershed histories. As a result our studies hold great promise for better understanding ancient foreland basin lake deposits such as the Green River Fm. and the Sevier belt paleolakes of the western US.

Recent publications and in press:

McGlue, M.M., Silva, A., Corradini, F.A., Zani, H., Trees, M.A., Ellis, G.S., Parolin, M., Swarzenski, P.W., Cohen, A.S. and Assine, M.L., 2011. Limnogeology in Brazil’s ‘‘forgotten wilderness’’: a synthesis from the large floodplain lakes of the Pantanal. J. Paleolim. 46:273-289, doi 10.1007/s10933-011-9538-5.

McGlue, M.M., Ellis, G.S., Cohen, A.S., and Swarzenski, P.W., 2011 Playa-lake sedimentation and organic matter accumulation in an Andean piggyback basin: The recent record from the Cuenca de Pozuelos, NW Argentina. Sedimentology. DOI: 10.1111/j.1365-3091.2011.01304.x

McGlue, M.M., Silva, A., Zani, H., Corradini, F., Paurolin, M., Abel, E., Cohen, A.S., Assine, M.L., Ellis, G.S., Trees, M.A., Kuerten, S., dos Santos Gradella, F., and Rasbold, G.G., 2012, Lacustrine records of Holocene flood pulse dynamics in the Upper Paraguay River watershed ((Pantanal wetlands, Brazil). Quaternary Research doi:10.1016/j.yqres.2012.05.015.

In press

Cohen, A.S., McGlue, M., Ellis, G., Zani, H., Swarzenski, P., Assine, M. Silva, A., Lake formation, characteristics and evolution in retroarc deposystems: A synthesis of the modern Andean Orogen and its associated basins” Submitted to  DeCelles, P.G., Ducea, M.N., Carrapa, B., and Kapp, P.A. (eds.) Geol. Soc. America Memoir Geodynamics of a Cordilleran Orogenic System: The Central Andes of Argentina and Northern Chile

1a and 1b. Model of the various tectonic settings where lakes can accumulate adjacent
to compressional mountain belts

2. Former UA Graduate student Mike McGlue (right, now Asst. Professor of Geology at the University of Kentucky) and current UA graduate student Andrew Kowler coring Laguna Pozuelos, a piggy-back basin in the Puna region of northern Argentina. Photo by Andy Cohen.