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Efeito térmico provocado pelo pluton ediacarano Umarizal em rochas do Grupo Seridó (RN): implicações estruturais, mineralógicas e petrofísicas
(Universidade Federal do Rio Grande do NorteBrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM GEODINÂMICA E GEOFÍSICA, 2020-12-17)
The northeastern portion of the Borborema Province (PB), in northeastern Brazil, is
marked by a voluminous Ediacaran magmatism that intrudes the paleoproterozoic
gneiss-migmatitic basement (the Caicó Complex) and ...
A paleomagnetic and magnetic fabric study of the Illapel Plutonic Complex, Coastal Range, central Chile: Implications for emplacement mechanism and regional tectonic evolution during the Mid-Cretaceous.
(2014)
The Illapel Plutonic Complex (IPC), located in the Coastal Range of central Chile (31 e33 S), is composed of different lithologies, ranging from gabbros to trondhjemites, including diorites, tonalites and granodiorites. ...
Ushuaia pluton: Magma diversification, emplacement and relation with regional tectonics in the southernmost Andes
(Pergamon-Elsevier Science Ltd, 2018-12)
The Ushuaia pluton (UP) and the Ushuaia Peninsula Andesites (UPA) are intrusive units of a Late Cretaceous rear-arc in the Southernmost Andes. We report new LA-ICP-MS zircon ages from ∼71 to 75 Ma for the UP, and of ∼84 ...
Ages and cooling history of the Early Cretaceous Caleu pluton: testimony of a switch from a rifted to a compressional continental margin in central Chile
(GEOLOGICAL SOC PUBL HOUSE, 2005-03)
The Caleu pluton, in the Coastal Range of central Chile, represents the last magmatic event related to the Early Cretaceous rifting along the western margin of South America. The pluton was emplaced into a c. 10 km thick ...
Contrasting magmatic structures between small plutons and batholiths emplaced at shallow crustal level (Sierras de Córdoba, Argentina)
(Pergamon-Elsevier Science Ltd, 2016-11)
Processes like injection, magma flow and differentiation and influence of the regional strain field are here described and contrasted to shed light on their role in the formation of small plutons and large batholiths their ...
Low-pressure emplacement of epidote-bearing metaluminous granitoids in the Sierra de Chepes (Famatinian Orogen, Argentina) and relationships with the magma source
(Servicio Nacional de Geología y Minería (SERNAGEOMIN), 2001)
Asymmetric textural and structural patterns of a granitic body emplaced at shallow levels: the La Chinchilla pluton, northwestern Argentina
(Pergamon-Elsevier Science Ltd, 2015-09)
New mapping and a detailed structural study of the La Chinchilla stock, Sierra de Velasco, NWArgentina,suggest an asymmetrical shape of the pluton and provide strong evidence for its shallow emplacementdepth. The pluton ...
K-feldspar megacryst accumulations formed by mechanical instabilities in magma chamber margins, Asha pluton, NW Argentina
(Pergamon-Elsevier Science Ltd, 2018-07)
The Asha pluton, the oldest unit of the San Blas intrusive complex (Early Carboniferous), exhibits impressive examples of magmatic structures formed by accumulation of K-feldspar megacrysts, enclaves, and schlieren. Almost ...