@misc{10481/45854,
year = {2017},
url = {http://hdl.handle.net/10481/45854},
abstract = {Understanding the mechanisms and processes responsible for the generation of mantle
heterogeneities is crucial for improving our knowledge about the composition and
differentiation of the Earth at different scales. Orogenic peridotite massifs provide an
exceptional opportunity to investigate in situ the nature and scale of compositional mantle
heterogeneities. This Ph.D. thesis aims to shed new light on the role of melt-rock reaction
processes and recycling of oceanic and continental crustal material in creating chemical
heterogeneities in the mantle. To achieve this objective, this study focuses on mantle rocks
exposed in orogenic peridotites from the Betic-Rif Cordillera in the westernmost
Mediterranean, and their allied crustal rocks. Two processes related to the development of
geochemical heterogeneities in the Earth’s upper mantle are addressed in this work: (i) the
formation of secondary lherzolites by melt-rock reaction processes, and (ii) the genesis of ultrahigh
pressure garnet pyroxenites and its implications for crustal recycling into the mantle.
Furthermore, this thesis explores (iii) to what extent Betic crustal rocks were involved in the
geochemical signature of magmatism recorded in the subcontinental lithospheric mantle
(SCLM), and in the Miocene Alborán Sea basin volcanism. The westernmost Mediterranean
records an Alpine history of subduction and slab roll-back that resulted in the creation of the
Alborán Sea basin. Mantle rocks and their allied crustal rocks in the Betic-Rif belt hence
provide a unique natural laboratory for studying large scale recycling of crustal components in
the SCLM.},
organization = {Tesis Univ. Granada. Programa Oficial de Doctorado en: Ciencias de la Tierra},
organization = {Research leading to these results has been funded by a CSIC JAE-Predoc Fellowship to M.I.V.R. This work has also been supported by the “Spanish Ministry of Economic and Competitiveness” (MINECO) grants CGL2013-42349-P-14848, CGL2016-81085-R, and the Junta de Andalucía research group RNM-131 and grant P12-RNM-3141. This research has benefited from EU Cohesion Policy funds from the European Regional Development Fund (ERDF) and the European Social Fund (ESF) in support of human resources, innovation and research capacities, and research infrastructures.},
publisher = {Universidad de Granada},
keywords = {Isótopos},
keywords = {Geoquímica},
keywords = {Tectónica de placas},
keywords = {Subducción},
keywords = {Manto terrestre},
keywords = {Geodinámica},
keywords = {Rocas metamórficas},
keywords = {Mediterráneo},
title = {Origin of chemical heterogeneities in the subcontinental lithospehric mantle: Insights from the westernmost Mediterranean orogenic peridotites and allied crustal rocks},
author = {Vara Reus, María Isabel},
}