Evolution of the Tithonian–Aptian Carbonate Platform Along the Northern Tethyan Margin, Eastern Helvetic Alps
Hanspeter Funk, Karl B. Föllmi, Hans Mohr, 1993. "Evolution of the Tithonian–Aptian Carbonate Platform Along the Northern Tethyan Margin, Eastern Helvetic Alps", Cretaceous Carbonate Platforms, J. A. Toni Simo, Robert W. Scott, Jean-Pierre Masse
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Name: Eastern Helvetic platform
Authors: Hanspeter Funk, Karl B. Föllmi, and Hans Mohr
Location: From 46° 40' to 47° 20' north latitude and 8° 40' to 9° 40' east longitude, Helvetic Alps, eastern Switzerland
Geologic time interval: Late Tithonian–early Albian
Tectonic-sedimentary setting: Northern Tethyan passive margin
Basin type: Epeiric
Paleoclimate: Mainly subtropical, varying humidity, with some cooler intervals
Platform type: Open shelf carbonate platform, homoclinal ramp type
Platform geometry: Minimum platform length is about 1500 km; width may surpass 100 km in several parts of the margin. Platform thicknesses are variable, with maximum platform thickness exceeding 1 km.
Facies and fossils: Fine- to coarse-grained carbonates, mudstones, claystones, and marlstones; glauconitic, siliciclastic, and phosphatic sediments; calpionellids, orbitolinids, corals, rudists, ammonoids, and echinoderms.
Systems tracts: Transitional, tidal flat, lagoonal, open platform, platform margin, slope, basin
Stacking patterns: Succession of shallowing and drowning phases with short intervals of subaerial exposure
Figures & Tables
With the large amount of information from Cretaceous basins available for comparative studies in the early 1990s, it seemed appropriate and timely to make available these regional studies on carbonate platforms, aiming at a convenient and objective presentation in a standard format. This volume represents the result of that effort. It brings together 32 well-documented data sets on carbonate platforms from 17 countries, which represent a significant part of the spectrum of Cretaceous carbonate platforms in different geologic provinces and tectonic settings. Two introductory articles summarize some of the main aspects of the Cretaceous period, carbonate platforms, and economic resources, and review each case study. The objectives of this book are to document styles of formation, growth, and development of Cretaceous carbonate platforms and to compare platform geometries, dimensions, and styles of similar platforms but different tectonic-sedimentary settings.