@article{10272/8171,
year = {2008},
url = {http://hdl.handle.net/10272/8171},
abstract = {The westernmost Sopelana and «Punta de Solondotas» sea-cliff sections exposes a marl-limestone
alternation distorted by thin turbidite layers, from the Lower Maastrichtian of the deep Basque Arc domain.
High-resolution analysis (% CaCO3) of the Lower Maastrichtian turbidites and marls point out: a) a major
content in turbidites than marls; b) a decrease tendency in carbonate content from the bottom towards
the top of the bed. To explain the presence of unusual celestite (SrSO4) multilayers founded in deep
marine sediments, a hypothetical biogenic source (acantharians) and complex diagenetic processes are
invoked in order to develop «cone in cone» structure and a small silicification replacement. In the top of
the «Punta de Solondotas» outcrop, we confirm that the early entry of deep, cold, oxygenated water
produced a gradual (grey/red) change of coloration in the Lower Maastrichtian marls. It is the beginning of
the Cretaceous oceanic red beds (CORB´s) in the Basque Cantabrian Basin},
title = {Contenidos de CaCO3 en facies turbidíticas y presencia de celestita diagenética en el Maastrichtiense inferior (Sopelana, Arco Vasco)},
title = {Contents of CaCO3 in turbiditic facies and celestite occurrence in the lower Maastrichtian (Sopelana, Basque Arc)},
author = {Pascual Zabalza, Borja and Portos, Oihan and Miren Epelde, Ane and Jaurena, Eneko and Zugasti, Iker and Elorza, Javier},
}