Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filábride Complex, SE Spain

V. L�ez S�nchez�Vizcaín; D. Rubatto; M. Gómez-Pugnaire; V. Trommsdorff

doi:10.1046/j.1365-3121.2001.00354.x

Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filábride Complex, SE Spain

V. L�ez S�nchez�Vizcaín, D. Rubatto, M. Gómez-Pugnaire, V. Trommsdorff

Research output: Contribution to journal › Article › peer-review

121 Citations (Scopus)

Abstract

This study provides new constraints on fast cooling and exhumation rates of high-pressure metamorphic rocks in young active mountain belts. Ion microprobe (SHRIMP) U-Pb analysis of zircon in a pyroxenite layer of the Cerro del Almirez ultramafic rocks (Nevado-Filábride Complex, southern Spain) gave an age of 15.0 ± 0.6 Myr (95% c.l.). Mineral inclusions demonstrate that zircon formed close to the high-pressure peak. Combined with previous fission track data, the 15 Myr age suggests high cooling (80 °C Myr^-1) and exhumation (1.2 cm yr^-1) rates for the unit. The new results indicate that both the Nevado- Filábride Complex and the overlying Alpujárride Complex, with somewhat higher ages and exhumation rates, underwent similar metamorphic evolutions at different times. This implies that the Alpujárride rocks were exhumed when the Nevado-Filábride was subducting and that the same tectonic scenario propagated from one portion of the Betic Cordilleras to another.

Original language	English
Pages (from-to)	327-332
Number of pages	6
Journal	Terra Nova
Volume	13
Issue number	5
DOIs	https://doi.org/10.1046/j.1365-3121.2001.00354.x
Publication status	Published - 1 Oct 2001

Access to Document

10.1046/j.1365-3121.2001.00354.x

Cite this

@article{31ac5682eb56471693d1f5e01f80053b,

title = "Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Fil{\'a}bride Complex, SE Spain",

abstract = "This study provides new constraints on fast cooling and exhumation rates of high-pressure metamorphic rocks in young active mountain belts. Ion microprobe (SHRIMP) U-Pb analysis of zircon in a pyroxenite layer of the Cerro del Almirez ultramafic rocks (Nevado-Fil{\'a}bride Complex, southern Spain) gave an age of 15.0 ± 0.6 Myr (95% c.l.). Mineral inclusions demonstrate that zircon formed close to the high-pressure peak. Combined with previous fission track data, the 15 Myr age suggests high cooling (80 °C Myr-1) and exhumation (1.2 cm yr-1) rates for the unit. The new results indicate that both the Nevado- Fil{\'a}bride Complex and the overlying Alpuj{\'a}rride Complex, with somewhat higher ages and exhumation rates, underwent similar metamorphic evolutions at different times. This implies that the Alpuj{\'a}rride rocks were exhumed when the Nevado-Fil{\'a}bride was subducting and that the same tectonic scenario propagated from one portion of the Betic Cordilleras to another.",

author = "S�nchez�Vizca{\'i}n, {V. L�ez} and D. Rubatto and M. G{\'o}mez-Pugnaire and V. Trommsdorff",

year = "2001",

month = oct,

day = "1",

doi = "10.1046/j.1365-3121.2001.00354.x",

language = "English",

volume = "13",

pages = "327--332",

journal = "Terra Nova",

issn = "0954-4879",

publisher = "John Wiley & Sons Inc.",

number = "5",

}

TY - JOUR

T1 - Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filábride Complex, SE Spain

AU - S�nchez�Vizcaín, V. L�ez

AU - Rubatto, D.

AU - Gómez-Pugnaire, M.

AU - Trommsdorff, V.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - This study provides new constraints on fast cooling and exhumation rates of high-pressure metamorphic rocks in young active mountain belts. Ion microprobe (SHRIMP) U-Pb analysis of zircon in a pyroxenite layer of the Cerro del Almirez ultramafic rocks (Nevado-Filábride Complex, southern Spain) gave an age of 15.0 ± 0.6 Myr (95% c.l.). Mineral inclusions demonstrate that zircon formed close to the high-pressure peak. Combined with previous fission track data, the 15 Myr age suggests high cooling (80 °C Myr-1) and exhumation (1.2 cm yr-1) rates for the unit. The new results indicate that both the Nevado- Filábride Complex and the overlying Alpujárride Complex, with somewhat higher ages and exhumation rates, underwent similar metamorphic evolutions at different times. This implies that the Alpujárride rocks were exhumed when the Nevado-Filábride was subducting and that the same tectonic scenario propagated from one portion of the Betic Cordilleras to another.

AB - This study provides new constraints on fast cooling and exhumation rates of high-pressure metamorphic rocks in young active mountain belts. Ion microprobe (SHRIMP) U-Pb analysis of zircon in a pyroxenite layer of the Cerro del Almirez ultramafic rocks (Nevado-Filábride Complex, southern Spain) gave an age of 15.0 ± 0.6 Myr (95% c.l.). Mineral inclusions demonstrate that zircon formed close to the high-pressure peak. Combined with previous fission track data, the 15 Myr age suggests high cooling (80 °C Myr-1) and exhumation (1.2 cm yr-1) rates for the unit. The new results indicate that both the Nevado- Filábride Complex and the overlying Alpujárride Complex, with somewhat higher ages and exhumation rates, underwent similar metamorphic evolutions at different times. This implies that the Alpujárride rocks were exhumed when the Nevado-Filábride was subducting and that the same tectonic scenario propagated from one portion of the Betic Cordilleras to another.

UR - http://www.scopus.com/inward/record.url?scp=0035691464&partnerID=8YFLogxK

U2 - 10.1046/j.1365-3121.2001.00354.x

DO - 10.1046/j.1365-3121.2001.00354.x

M3 - Article

SN - 0954-4879

VL - 13

SP - 327

EP - 332

JO - Terra Nova

JF - Terra Nova

IS - 5

ER -

Middle Miocene high-pressure metamorphism and fast exhumation of the Nevado-Filábride Complex, SE Spain

Abstract

Access to Document

Other files and links

Fingerprint

Cite this