RT Journal Article
T1 Foraminifers of the Viséan–Serpukhovian boundary interval in Western Palaeotethys: a review
A1 Cózar Maldonado, Pedro
A1 Vachard, Daniel
A1 Aretz, Markus
A1 Somerville, Ian D.
AB A detailed revision of foraminiferal zonal schemes in sections throughout Europe and North Africa for the Viséan–Serpukhovian boundary interval suggests that several foraminiferal taxa might have the potential to form reliable markers throughout the Palaeotethys. This would support the currently investigated boundary definition based on the First Appearance Datum of the conodont Lochriea ziegleri. However, correlation of these foraminiferal markers in the Western Palaeotethys region has encountered several problems, partly arising from taxonomic issues, but mainly because of apparent discrepancies between the First Occurrence Data (FOD). Analysis of the available foraminiferal data has revealed that some taxa show marked delays in their FODs, due to the timing of westward dispersal within the Palaeotethys, emanating from a probable source in eastern Russia. As a result of this investigation, two dispersal routes have been identified, a northern branch and a southern branch. In general, the displacements within the southern branch occurred more rapidly than in the northern branch. In addition to different dispersal routes, separation of the main foraminiferal markers in stratigraphical sections from different regions can result from isolation of shallow‐water facies of the inner platform from those of relatively deeper‐water settings in the outer platform, the latter showing more consistent foraminiferal FODs. The differences in palaeobathymetry and associated energy levels have enabled two foraminiferal zonal schemes to be distinguished for the Viséan–Serpukhovian boundary interval in the Western Palaeotethys, one for the inner platform and a second one for the outer platform.
PB Wiley
SN 0024-1164, ESSN: 1502-3931
YR 2019
FD 2019-04
LK https://hdl.handle.net/20.500.14352/13188
UL https://hdl.handle.net/20.500.14352/13188
LA eng
NO Ministerio de Ciencia e Innovación (MICINN)
DS Docta Complutense
RD 6 abr 2025