Mostrando ítems 30-38 de 38
Shalbak, Farid Ali (Fecha de defensa: 2015-12-21)
The Murzuq Basin is a sedimentary basin located SW Libya which geology remains poorly understood in spite that their proved reserves has been estimated up to 6000 MMb and a number of finds have been recently reported. The ...
Pérez de la Fuente, Ricardo (Fecha de defensa: 2012-12-21)
El yacimiento de ámbar de El Soplao (Rábago, Cantabria), de edad Cretácico Inferior (hace unos 110 millones de años), ha proporcionado a día de hoy más de 500 bioinclusiones de artrópodos. El estudio morfológico y sistemático ...
Peris Cerdán, David (Fecha de defensa: 2015-11-27)
Los coleópteros son en la actualidad el grupo biológico con mayor biodiversidad de la Tierra. Se conocen coleópteros fósiles desde el Pérmico, pero conservados en ámbar solo desde el Cretácico inferior. Este tipo de ...
Costa Gisbert, Elisenda (Fecha de defensa: 2011-09-20)
This PhD-Thesis presents a new chronostratigraphy of the Paleogene sedimentary record of the SE margin of the Eastern Ebro Basin. It is based on a number of magnetostratigraphic sections and its integration with marine and ...
Canales, Cristian M. (Fecha de defensa: 2016-10-25)
The population structure of fishery resources and the impact of environmental factors over its productivity are important processes to be considered in fisheries management. Environmental factors could determine both, the ...
Piñero Melgar, Elena (Fecha de defensa: 2009-05-22)
Gas hydrates have been recently recognized as a key factor affecting a number of global processes such as the climatic change, sea floor stability, etc. In this thesis we present the multidisciplinary study of gas hydrate ...
Llopart Serra, Jaume (Fecha de defensa: 2016-11-22)
The development of two Arctic Trough Mouth Fans (TMFs), the Storfjorden and Kveithola TMFs, is investigated by means of sub-bottom and seismic reflection profiles, multibeam bathymetry and sediment samples allowing their ...
Hernández Hernández, Armand (Fecha de defensa: 2010-09-21)
Calcareous microfossils are not always present in marine or lacustrine sediments owing to unfavourable ecological or post-depositional conditions. These non-carbonated sediments sometimes contain abundant biogenic silica, ...
Frigola Ferrer, Jaime I. (Fecha de defensa: 2012-12-05)
Aquesta Tesi Doctoral està centrada en la reconstrucció de les condicions climàtiques del passat a la conca occidental del Mediterrani, i més concretament en l’estudi de l’efecte de la variabilitat climàtica d’escala orbital ...