Past Seminars

Vertical movements in the Moroccan High Atlas. Insights from zircon (U-Th)/He thermochronometry and vitrinite reflectance data

Details
  • Mireia Domènech, División de Geociencias Aplicadas, Instituto Potosino de Investigación Científica y Tecnológica, San Luis Potosí, Mexico
  • Mar Moragas, Group of Dynamic of the Lithosphere (GDL), Institute of Earth Sciences Jaume Almera, ICTJA-CSIC, Barcelona, Spain
  • Date: Jan, 12, 2017 12:00 am
  • Place: Sala d’Actes del Institut de Ciències de la Terra Jaume Almera (ICTJA)
  • Location: C/ Solé i Sabarís s/n, Barcelona
  • Further information: Dr. Eduard Saura

Abstract

The High Atlas range in Morocco is characterised by extensive outcrop of Paleozoic, Triassic and Jurassic rocks, with very restricted occurrences of younger rocks in the central part of the range. Besides, evidence suggests that a relatively thick succession covered the whole area prior to the Late Cretaceous-Cenozoic inversion of the Atlas Rift and the development of this anomalously high intracontinental range. This process has been studied in the Marrakech and Central High Atlas using numerical models based on zircon (U-Th)/He thermochronometry and reflectance vitrinite data. Results have been addressed by the recently published works:

Domènech, M., A. Teixell, and D. F. Stockli (2016), Magnitude of rift-related burial and orogenic contraction in the Marrakech High Atlas revealed by zircon (U-Th)/He thermochronology and thermal modeling, Tectonics, 35(11), 2609-2635, doi: 10.1002/2016TC004283.

Moragas, M., et al. (2016), Jurassic rifting to post-rift subsidence analysis in the Central High Atlas and its relation to salt diapirism, Basin Research, n/a-n/a, doi: 10.1111/bre.12223.

These works will be present by their main authors and later discussed focusing on their implications on the quantification of the vertical movements in the Moroccan High Atlas.

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