81Kr reveals one-million-year-old groundwater at the Atlantic coast of Argentina as a record of Mid-Pleistocene climate

D.E. Martínez,W. Jiang,T. Matsumoto,O.M. Quiroz Londoño, F. Ritterbusch, C. Lexow,G.M. Yang, L. Bertolín,J. Mabry, N. Romeo,M. Zárate,Z.-T. Lu

Journal of Hydrology（2022）

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摘要

•81Kr reveals the existence of million-year old groundwater in Argentina.•Groundwater recharge is re-assigned to a period from MIS1 to MIS 5.•South America Low Level Jet (SALLJ) reached further south during MIS3.•New conceptual model for the deep confined aquifers in central coastal Argentina.•Recharge conditions imply arid climate dominated during Mid-Pleistocene transition in Argentina.

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关键词

81Kr dating,Thermal groundwater,Mid-Pleistocene paleoclimate,Deep aquifers in Argentina,Radiogenic4He

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