IPN discovers 35,000-year-old groundwater

Scientists from National Polytechnic Institute (IPN) made an unusual discovery: water infiltrations so old as the last glacial episodes in an aquifer of Puebla.

The educational institution issued a statement to confirm that the infiltrations of the Puebla Valley aquifer are older than 35 thousand years old; This dating of the water was carried out through the isotopic techniques of Radio Carbon 14, Delta Oxygen 18 and Delta Deuterium.

The experts of Interdisciplinary Center for Research and Studies on Environment and Development (CIIEMAD) of the IPN determined that the infiltration in the aquifer corresponds to the Quaternary period in the times of the Pleistocene and the Holocene.

Pedro Francisco Rodríguez Espinosa, A CIIEMAD researcher, said that the interglacial precipitations of the Pleistocene, added to those that occurred in the Holocene, managed to infiltrate the volcanic structure of La Malinche (in formation) and in the foothills of the Sierra Nevada, which had great volcanic activity.

The IPN celebrated that with this research it is positioned as a pioneer in the isotopic dating of groundwater in the Puebla Valley aquifer which “will allow the application of actions aimed at regulating the overexploitation of water resources “

The analyzes also made it possible to find infiltrated water with ages of 2,280 years, 7,890 years, 8,700 years and up to 13,750 years old, said the IPN, the largest technological education center in Mexico with an enrollment of 180 thousand students at the upper, upper and postgraduate levels.

He melting of ice sheets and interglacial precipitation “They promoted the recharge of the aquifer, which in turn was under construction by means of sediments generated by the intense volcanic activity of the period, mainly from the Popocatépetl and La Malinche volcanoes,” said Rodríguez Espinosa.

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The IPN explained that the group of experts in charge of the study had the participation of Rodríguez Espinosa himself; of the graduate student Karen Minelli Ochoa; and of Estefanía Martínez, from the Popular Autonomous University of the State of Puebla.

Chindambaran S., from the Water Research Center of Kuwait Institute for Scientific Research, and Banajarani Panda, from Department of Earth Sciences, Annamalai, University, India.

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