RT Journal Article
T1 El metamorfismo de la Sierra Chica de Córdoba (SierrasPampeanas). Argentina
A1 Baldo, Edgardo G.
A1 Casquet Martín, César
A1 Galindo Francisco, María Del Carmen
AB Preliminary results on the regional metamorphism of the Sierra Chica (Sierras Pampeanas) are reported.The work is based on a detailed textural and mineral study of high-grade cordierite-garnet metapeliticmigmatites of diatexitic type. Three events are recognized on the basis of garnet textural and chemicalzoning: M7 probably represents an older metamorphism and took place under subsolidus conditions;M2 is synchronous to the main regional foliation (Sn+1). The peak of metamorphism was reached at thisstage under granulite facies conditions (P1= 5.7 ± O.4kb, T= 820 ± 25°C). This event is assigned to thePampean Orogeny; M3 represents a lower P-T event which is temptatively assigned to the uplift of thepreviously thickened continental crust. Registered P-T conditions for this retrograde event have beendetermined at 4±0.5kb and 775 ± 75°C respectively.
PB Sociedad Geológica de España
SN 0213-683X
YR 1996
FD 1996
LK https://hdl.handle.net/20.500.14352/56925
UL https://hdl.handle.net/20.500.14352/56925
LA spa
DS Docta Complutense
RD 5 abr 2025