Tracing thermal aquifers of El Chichon volcano-hydrothermal (Mexico) with Sr-87/Sr-86, Ca/Sr and REE
Por:
Peiffer L., Taran Y.A., Lounejeva E., Solís-Pichardo G., Rouwet D., Bernard-Romero R.A.
Publicada:
15 ago 2011
Resumen:
The volcano-hydrothermal system of El Chichon volcano, Chiapas, Mexico, is characterized by numerous thermal manifestations including an acid lake, steam vents and boiling springs in the crater and acid and neutral hot springs and steaming ground on the flanks. Previous research on major element chemistry reveals that thermal waters of El Chichon can be divided in two groups: (1) neutral waters discharging in the crater and southern slopes of the volcano with chloride content ranging from 1500 to 2200 mg/l and (2) acid-to-neutral waters with Cl up to 12,000 mg/l discharging at the western slopes. Our work supports the concept that each group of waters is derived from a separate aquifer (Aq. 1 and Aq. 2). In this study we apply Sr isotopes, Ca/Sr ratios and REE abundances along with the major and trace element water chemistry in order to discriminate and characterize these two aquifers. Waters derived from Aq. 1 are characterized by Sr-87/Sr-86 ratios ranging from 0.70407 to 0.70419, wh
Filiaciones:
Peiffer L.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico
Taran Y.A.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico
Lounejeva E.:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico
Solís-Pichardo G.:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico
Rouwet D.:
Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Palermo, Italy
Bernard-Romero R.A.:
Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City 04510, DF, Mexico
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