Stratigraphy and Sedimentary Development of the Sant Llorenç Del Munt Fan-Delta Complex (Eocene, Southern Pyrenean Foreland Basin, Northeast Spain)
- L. E. Frostick2 and
- R. J. Steel3
Published Online: 16 APR 2009
Copyright © 1993 The International Association of Sedimentologists
Tectonic Controls and Signatures in Sedimentary Successions
How to Cite
López-Blanco, M. (1994) Stratigraphy and Sedimentary Development of the Sant Llorenç Del Munt Fan-Delta Complex (Eocene, Southern Pyrenean Foreland Basin, Northeast Spain), in Tectonic Controls and Signatures in Sedimentary Successions (eds L. E. Frostick and R. J. Steel), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304053.ch5
- Published Online: 16 APR 2009
- Published Print: 28 FEB 1994
Print ISBN: 9780632037452
Online ISBN: 9781444304053
- stratigraphy and sediment development;
- facies analysis;
- fan-delta slope;
- Eocene Sant Llorenc del Munt;
- carbonate platform;
- coastal reef deposits
The Bartonian–Priabonian Sant Llorenç del Munt fan-delta complex is located on the southeast margin of the South Pyrenean foreland basin. During the deposition of this complex the basin margin was controlled by a series of sinistral strike-slip faults that, under transpressive conditions, developed some thrust structures.
The overall stratigraphical evolution of the fan-delta complex shows a large-scale progradation of the system to the northwest (the regressive part of a 2nd-order sequence). Fundamental sequences (4th order) of 50 000–200 000-year duration can be defined and these contain regressive, transgressive and occasional low-stand components. The stacking pattern of fundamental sequences defines composite sequences (3rd order, of about 800 000 years duration) which also have clear transgressive and regressive components. Fundamental sequences can be further subdivided into 5th-order sequences.
The deposition of the complex and the development of four orders of cyclicity is related to changes in relative sea-level and clastic supply, with both of these factors probably controlled largely by tectonic movements along the margin of this foreland basin, and climatic changes.