Repositorio Institucional
Repositorio Institucional
CONICET Digital
  • Inicio
  • EXPLORAR
    • AUTORES
    • DISCIPLINAS
    • COMUNIDADES
  • Estadísticas
  • Novedades
    • Noticias
    • Boletines
  • Ayuda
    • General
    • Datos de investigación
  • Acerca de
    • CONICET Digital
    • Equipo
    • Red Federal
  • Contacto
JavaScript is disabled for your browser. Some features of this site may not work without it.
  • INFORMACIÓN GENERAL
  • RESUMEN
  • ESTADISTICAS
 
Artículo

Thermal evolution of upper crustal magmatic systems from the Sierra de Velasco, NW Argentina

Macchioli Grande, Marcos SimónIcon ; Alasino, Pablo HoracioIcon ; Rocher, SebastianIcon ; Larrovere, Mariano AlexisIcon ; Uran, Gimena MarielIcon ; Reinoso Carbonell, Virginia ValeriaIcon ; Moreno, Gabriel
Fecha de publicación: 01/2019
Editorial: Pergamon-Elsevier Science Ltd
Revista: Journal Of Structural Geology
ISSN: 0191-8141
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Geología

Resumen

Detailed mapping of the Huaco intrusive Complex in NW Argentina documents a shift in the emplacement style of successive magma additions in an upper crustal environment as the system evolves thermally. The units of the Huaco intrusive complex exhibit a change from a tabular to funnel-shaped subhorizontal body (Huaco unit) with stoping and brittle fracturing as main emplacement mechanisms, to a cylindrical body (Sanagasta unit), emplaced in a heated host rock which shows local ductile behaviour. As the system cools, the youngest intrusion (La Chinchilla unit) emplaces again as a subhorizontal tabular to funnel-shaped body. Furthermore, magmatic fabrics recorded a regional strain field that changed from a SW-NE to WSW-ENE shortening, as well as boundary strain increments and stress reorientation. Our results demonstrate that the evolution of magma chambers involves the emplacement of magma batches in a stiff crust, changing its thermal conditions and maturing the system for following intrusions. The latter ascend as visco-elastic elongated bodies using the same magmatic plumbing system, leading to a shift in the emplacement style. The described evolution is similar to that reported for the contemporaneous San Blas intrusive Complex located in the same range. This allows us to affirm that these processes are recurrent in the upper crustal section, and that the thermal and rheological conditions of the crust are locally modified by the formation and evolution of long-lived magma reservoirs.
Palabras clave: EMPLACEMENT SWITCH , HUACO INTRUSIVE COMPLEX , MAGMA RESERVOIRS , UPPER CRUST
Ver el registro completo
 
Archivos asociados
Tamaño: 10.92Mb
Formato: PDF
.
Solicitar
Licencia
info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/98114
URL: https://www.sciencedirect.com/science/article/pii/S0191814118302487
DOI: http://dx.doi.org/10.1016/j.jsg.2018.10.006
Colecciones
Articulos(CRILAR)
Articulos de CENTRO REGIONAL DE INV. CIENTIFICAS Y TRANSFERENCIA TECNOLOGICA DE ANILLACO
Citación
Macchioli Grande, Marcos Simón; Alasino, Pablo Horacio; Rocher, Sebastian; Larrovere, Mariano Alexis; Uran, Gimena Mariel; et al.; Thermal evolution of upper crustal magmatic systems from the Sierra de Velasco, NW Argentina; Pergamon-Elsevier Science Ltd; Journal Of Structural Geology; 118; 1-2019; 1-20
Compartir
Altmétricas
 
Estadísticas
Visualizaciones: 110
Descargas: 0

Enviar por e-mail
Separar cada destinatario (hasta 5) con punto y coma.
  • Facebook
  • Twitter
  • Instagram
  • YouTube
  • Sound Cloud

Los contenidos del CONICET están licenciados bajo Creative Commons Reconocimiento 2.5 Argentina License

Ministerio
https://www.conicet.gov.ar/ - CONICET

Inicio

Explorar

  • Autores
  • Disciplinas
  • Comunidades

Estadísticas

Novedades

  • Noticias
  • Boletines

Ayuda

Acerca de

  • CONICET Digital
  • Equipo
  • Red Federal

Contacto

Godoy Cruz 2290 (C1425FQB) CABA – República Argentina – Tel: +5411 4899-5400 repositorio@conicet.gov.ar
TÉRMINOS Y CONDICIONES