RT Journal Article
T1 Age, Sr and Nd-Isotope Systematics, and Origin of Two Fluorite Lodes, Sierras Pampeanas, Argentina
A1 Galindo Francisco, María Del Carmen
A1 Pankhurst, R.J.
A1 Casquet Martín, César
A1 Coniglio, Jorge
A1 Baldo, Edgardo G.
A1 Rapela, Carlos W.
A1 Saavedra, Julio
AB Fluorite mineralization at the La Nueva and Bubu mines yields Sm-Nd ages of 131 ± 22 and 117 ± 26 Ma, respectively. Thus, the mineralization most probably is related to a late Gondwanian (Lower Cretaceous) extensional and magmatic event that affected the Sierras Pampeanas basement during the opening of the Atlantic Ocean. Hydrothermal fluids involved in the formation of the fluorite probably were of meteoric origin, their isotopic composition (Sr and Nd) resulting largely from the incongruent dissolution of feldspars in the host porphyritic granites.
PB Taylor & Francis
SN 0020-6814
YR 1997
FD 1997
LK https://hdl.handle.net/20.500.14352/56993
UL https://hdl.handle.net/20.500.14352/56993
LA eng
DS Docta Complutense
RD 1 sept 2024