Facies

, Volume 50, Issue 3, pp 573–614

The reefal margin and slope of a Middle Triassic carbonate platform: the Latemar (Dolomites, Italy)

  • Axel Emmerich
  • Valeria Zamparelli
  • Thilo Bechstädt
  • Rainer Zühlke
Original Article

DOI: 10.1007/s10347-004-0033-6

Cite this article as:
Emmerich, A., Zamparelli, V., Bechstädt, T. et al. Facies (2005) 50: 573. doi:10.1007/s10347-004-0033-6

Abstract

The Latemar is a mainly aggrading platform, but shows repeated backstepping during its entire development. The behaviour of the slope does not reflect accommodation changes and lateral consistencies of the lagoonal interior; the Latemar contemporaneously reveals different, even contrasting depositional characteristics. The slope of the late stage platform evolution corresponds at least partially to the “base-of-slope apron” model. Controlling factors on slope evolution are of tectonic (proximity of the Stava Line) and autocyclic (repeated oversteepening) nature. Other factors are insignificant and/or overprinted.

The reef-facies at Latemar reveals a complex facies pattern; it varies along and across the margin and is rich in encrusting sponges, corals, biogenic crusts and “Microproblematica”. Some biota or fossil assemblages—e.g. foraminifers (Abriolina mediterranea, Turriglomina scandonei) or “Tubiphytesmultisiphonatus thrombolites—have not been described in the Dolomites before. Biostratigraphic evidence from the uppermost reef-facies confirms a mainly Anisian age of the outcropping platform interior.

Keywords

Carbonate slopeDepositional modelReefal zonationLate AnisianMiddle TriassicDolomites

Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Axel Emmerich
    • 1
  • Valeria Zamparelli
    • 2
  • Thilo Bechstädt
    • 1
  • Rainer Zühlke
    • 1
  1. 1.Geologisch-Paläontologisches InstitutRuprecht-Karls-Universität HeidelbergHeidelbergGermany
  2. 2.Dipartimento di Scienze della TerraUniversità degli Studi di Napoli Federico IINapoliItaly