Evolución de la Cuenca de Antepaís desde la zona de la Cumbre Calchaquí hasta la Sierra de Santa Bárbara, Eoceno inferior-Mioceno medio, provincia de Salta, Argentina

Tertiary foreland basin evolution in northwestern Argentina is addressed in the light of new chronostratigraphic information. We interpret strata from the Lumbrera (II) Fo rmation deposits (the top of the Santa Bárbara Subgroup, Salta Group) to the Angastaco Formation deposits (Payogastilla Group) and its temporal equivalent, the Metán Subgroup (base of Orán Group). Middle Eocene foreland basin development began in response to intense tectonic activity in the west. The triangular-shaped region received ephemeral stream and dry mudflat deposits of the Lumbrera (II) Formation. During the Oligocene stage of tectonic quiescence a lens-shaped basin developed where ephemeral streams, dry mudflats and eolian strata were deposited in the Los Colorados Formation at the base of the Payogastilla Group. The second stage of tectonic activity started in the early to middle Miocene (to 12.5 Ma approximately). This established a foreland basin system in which characteristic wedge top, foredeep, forebulge and backbulge depozones are recognized. In the wedge top depozone (Valle Calchaquí) thick braided stream facies accumulated in the lower and middle section of the A n gastaco Fo rmation in the Payogastilla Group. In the foredeep depozone, proximal, medial and distal ephemeral stream and play a lake strata of the Río Seco and the Anta formations (Metán Subgroup) were deposited. The middle Miocene was tectonically quiescent. Eastward progradation of proximal facies continued in the wedge top, foredeep, forebulge and backbulge depozones. These deposits constitute the upper portion of the Angastaco Formation and ephemeral systems of the Jesús María Formation (the top of Metán Subgroup)

Géodynamique andine : résumé étendus = Andean geodynamics : extended abstracts

Nous décrivons le contexte tectonique et la distribution régionale des bassins tertiaires développés dans les Andes centrales argentines (22°-36° latitude Sud) à l'époque post-incaïque (Eocène précoce) et pré-diaguite (Pliocène tardif-Pléistocène précoce). (Résumé d'auteur

Retrospective radiation dosimetry using OSL of electronic components: Results of an inter-laboratory comparison

In the framework of the EU-FP7 MULTIBIODOSE project, two protocols using OSL of resistors removed from the circuit board of mobile phones were developed with the aim to use the resistors as fortuitous dosimeters in the event of a large scale radiological accident. This paper presents the results of an inter-laboratory comparison carried out under the umbrella of EURADOS. The two aims of this exercise were the validation of the MULTIBIODOSE protocols by a large number of laboratories and the dissemination of the method with the objective of preparing the basis for a network that could increase Europe's response capacity in the case of a mass casualty radiological emergency. Twelve institutes from eleven European countries and one institute from the USA, with various degrees of expertise in OSL dosimetry, took part in the OSL inter-laboratory comparison. Generally, a good agreement within uncertainties was observed between estimated and nominal doses