From Aggradation to Progradation: The Maiella Platform, Abruzzi, Italy
Gregor P. Eberli, Daniel Bernoulli, Diethard Sanders, Adam Vecsei, 1993. "From Aggradation to Progradation: The Maiella Platform, Abruzzi, Italy", Cretaceous Carbonate Platforms, J. A. Toni Simo, Robert W. Scott, Jean-Pierre Masse
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Name: Maiella platform
Authors: Gregor P. Eberli, Daniel Bernoulli, Diethard Sanders, and Adam Vecsei
Location: From 42° 05' to 07' north latitude and 14° 08' to 09' east longitude, provinces of Aquila, Chieti, and Pescara, Italy
Geologic time interval: Early Cretaceous-late Miocene
Tectonic-sedimentary setting: Southern continental margin of Jurassic-Cretaceous Tethyan ocean, part of large late Tertiary sedimentary decollement nappe of the Southern Apennines, exposed in a broad frontal anticline
Basin type: Passive continental margin
Paleoclimate: Generally warm and only seasonally humid, some humid intervals (bauxite); paleolatitude was 10° to 30° north
Platform type: Part of isolated platform with escarpment
Platform geometry: Escarpment changing to low angle slope and distally steepened ramp. Thickness is 2000 m (Lower Cretaceous-upper Miocene). Length exposed north-south is approximately 30 km, probably corner of the large Apulian platform, which is largely buried below Tertiary rocks, approximately more than 400 km (750 km?) long. Width exposed is 10–15 km.
Facies and fossils: Cretaceous shallow water platform margin in the south and a pelagic facies (Scaglia) with intercalated gravity flow deposits in the north, separated by an escarpment. Late Cretaceous platform margin rimmed by rudist biostromes (Hippurites and Caprinides)
Systems tracts and stacking patterns: Unconformities and exposure surfaces separate sequences; onlap and downlap patterns occur in the sequences. Platform highstand systems tracts composed of aggradational and progradational parasequences with rudist biostromes at the margin. Basin assemblage of pelagic deposits and turbidites (biodetritus) deposited during sea level highstands. Lowstand systems tracts have incised channel fills, small slope fans, and gravity flow deposits. Transgressive systems tracts hard to distinguish from highstand systems tracts.
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.