Year: 2013
Type: article
Abstract: Based on a total of 135 stable isotope analysis (δ18O, δD) carried out on surface and groundwater samples, as well as on rainwater samples between 2004 and 2011 in 5 different regions in Baja California, an isotopic evaluation of the region was established. The results showed a depletion gradient of -0.25%0 δ18O per 100 m rise in elevation throughout the study area. Considering an unaltered δ18O signature for the thermal springs, the recharge areas of these waters are at elevations over 1400 m outside of the present watersheds, indicating the presence of regional flow systems next to the local flow regime feeding the cold springs and wells. The Mesa de Andrade area has a completely different signature with values of -105 for δ18O and -13 for δD.
Authors: Thomas G. Kretzschmar, Theresa Frommen
Language: English
Subfield: Geochemistry and Petrology
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W1968008329