RT Journal Article
T1 Variaciones microfaunísticas en el Cenomaniense superior a Turoniense superior de la Plataforma Norcastellana (área Puentedey-Santelices, Norte Burgos): respuesta morfológica de los inocerámidos
T1 Microfaunistic variations from the late Cenomanian to the late Turonian of the Norcastilian platform (Puentedey-Santelices area, Northern Burgos): inoceramid morphological answer
A1 Pascual, Ana
A1 Higuera Ruiz, R.
A1 Elorza, Javier
AB Analyses carried out on benthonic foraminiferal assemblages of the Puentedey-Hornillalatorre formations(Norcastilian Platform) are part of a multidisciplinary research with the main subject of understanding thepalaeoceanographic events that took place at the end of the Cretaceous within the Basque-CantabrianBasin. The study sections have been dated from the late Cenomanian to the late Turonian. A total of 98benthonic species have been identified, which clearly correspond to shallow marine water microfauna. Inthis context, some of the aspects about the palaeoenvironmental variations detected in Puentedey-Santelicesarea are crucially provided by changes of the foraminiferal assemblages (Units 1 to 3), specific diversitychanges of the microfauna, the rate between different type of tests of benthonic, percentage of keeled,incipiently keeled and globular planktonic foraminifera and oceanicity index. Thus, the dominantforaminiferal assemblages, the great percentage of agglutinated tests, and the lower values of the oceanicityindex suggest a cool, acid, and bad-oxygenated internal platform (<100 m) waters palaeoenvironment(Units 1-2). The inoceramid bivalves I. (Mytiloides), with thinner shells and grey colour are well-developed.The Unit 3, marked by oxygenated internal platform waters palaeoenvironment, where I. (Mytiloides) arereplaced by I (I) lamarcki, with thicker shells and caramel colour
PB Sociedad Geológica de España
YR 2005
FD 2005
LK http://hdl.handle.net/10272/8764
UL http://hdl.handle.net/10272/8764
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026