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The Miocene Duero Basin in central west: Stratigraphy, environments


The Miocene Duero Basin in central west: Stratigraphy, environments
The Miocene Duero Basin in central west: Stratigraphy, environments

Andrés Del Olmo Sanz

Affiliation: Instituto Geológico y Minero de España

Biography: Not available

Cerrar

Andrés Del Olmo Sanz

About the authors 

Publication year: 2013

Language: Spanish

Collection: Doctoral Thesis

Review:

The accomplishement of the thesis “The Miocene of the Duero basin in its Center-Western zone: Stratigraphy, sedimentary environments, minerals and industrial rocks”, is accompanied of a cartography on 1:200.000 scale. It has allowed to distinguish six aloestratigraphic units in the stratigraphic succession. The limits of these units are discordances, disconformities, agree sometimes with the powerful development of calcretas, wich they are followed regionally and that indicates the total occupation of the accommodation space. The names of the units from base to ceiling are: “Aspariegos, Valdefinjas, Belver de los Montes, Tierra de Campos, Cuestas y Páramo Inferior”. Each unit is formed by different associations of facies, originated in different sedimentary environments, from fluvials to lacustrines. The sedimentation was controlled by the tectonic and the climate. Two persistent sources areas existed along of Miocene, that fed the fluvial systems denominated Tera I to VI and Castillejos I to VI, another system of fluvial fan, had his apex in the Sistema Central range. Because of the relative programming of the fluvial systems is deduced that the rise of mountain ranges, formed the margins of the basin continued throughout Miocene. The space distribution of the associations of the lacustrine facies in the units of Belver de los Montes, Las Cuestas y Páramo Inferior adjust to a type of basin underfilled that evolves to a type overfilled. The lakes were shallows. The sediments of the lacustrine basins are massive or laminated marls that frequently contains levels of ostracodites. The coastal belt was formed by limestones of ostracodes, molluscs and charophytes.All these lakes had an edge marshy, where they were originated fibrous clays, black clays with vegetal rests and occasionally thin lignite layers. During the stages of lowstand gypsum precipitated which alternate with marls. The marls and limestones with foraminifer Ammonia placed in the unit Las Cuestas, are interpreted like sediments of a marine coastal lagoonNames like facies Tierra de Campos, Cuestas y Ciénagas lack of cronoestratigraphic value. The Miocene sediments adopt the geometry of two smooth synclinal structures. The space distribution of the industrial mineral deposits and ornamental rocks. Was controlled by the distribution of the different sedimentary environments. They emphasize clays for red ceramics, special clays, marbly limestone, feldspar, silica and limestones. It’s mentioned for the first time the presence of immature hydrocarbons in Miocene sediments of the Duero basin.

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Physical Description : 281 p.; ils. ; maps

ISBN: 978-84-7840-858-0

Publication: Madrid : Geological Survey of Spain, 2013

Reference IGME: 6001/21

Other data of interest: Price: 34,91 € (CD-ROM). It can be purchased at the store of IGME in 34, Cristóbal Bordiú Street (Madrid - Spain) or by mail by sending an email to publicaciones@igme.es // Tell us your opinion: http://igmepublicaciones.blogspot.com.es/

This book was added to our online catalog on Monday 20 May, 2013.