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Titolo:
High-resolution sequence interpretation of epeiric shelf carbonates by means of palynofacies analysis: An example from the Germanic Triassic (Lower Muschelkalk, Anisian) of East Thuringia, Germany
Autore:
Rameil, N; Gotz, AE; Feist-Burkhardt, S;
Indirizzi:
Univ Fribourg, Inst Geol, CH-1700 Fribourg, Switzerland Univ Fribourg Fribourg Switzerland CH-1700 CH-1700 Fribourg, Switzerland Tech Univ Darmstadt, Inst Geol Palaontol, D-64287 Darmstadt, Germany Tech Univ Darmstadt Darmstadt Germany D-64287 D-64287 Darmstadt, Germany
Titolo Testata:
FACIES
, volume: 43, anno: 2000,
pagine: 123 - 143
SICI:
0172-9179(2000)43:<123:HSIOES>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEDIMENTARY ORGANIC-MATTER; SWISS JURA; SE FRANCE; STRATIGRAPHY; ENVIRONMENT; ORIGIN;
Keywords:
palynofacies-sequence- and cyclostratigraphy carbonates; Thuringia (Germany); Triassic (Lower Muschelkalk, Anisian);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
85
Recensione:
Indirizzi per estratti:
Indirizzo: Rameil, N Univ Fribourg, Inst Geol, CH-1700 Fribourg, Switzerland Univ Fribourg Fribourg Switzerland CH-1700 ibourg, Switzerland
Citazione:
N. Rameil et al., "High-resolution sequence interpretation of epeiric shelf carbonates by means of palynofacies analysis: An example from the Germanic Triassic (Lower Muschelkalk, Anisian) of East Thuringia, Germany", FACIES, 43, 2000, pp. 123-143

Abstract

The Steudnitz quarry (East Thuringia, Germany) exposes the entire Lower Muschelkalk (Middle Triassic, Anisian) with a thickness of 103 m. In this paper, a primarily palynofacies-based sequence-stratigraphical interpretation supported by lithological investigations is proposed. Palynofacies of the sampled carbonate rocks is dominated by land-derived phytoclasts and pollen grains. Spores are quite rare. Marine plankton reaches its maximum abundance in an interval around the Thuringian Spiriferina-bed and the Terebratel-beds. In accordance with lithological features, this interval may be interpreted as a third-order maximum-flooding zone. Two different third-order interpretations are presented and discussed. Third-order sequences and parasequence sets can be identified by use of palynofacies analysis. Furthermore, palynofacies analysis provides an additional possibility of recognizing partly eroded or originally incomplete cycles ('missed beats'). In some cases, a resolution down to the level of parasequences is possible. High-resolution palynofacies analysis is a powerful new tool in sedimentology but should always be combined with lithofacies interpretation. It provides very useful, additional information for high-resolution sequence analysis and palaeoenvironmental interpretation. Being a rather young method, high-resolution palynofacies analysis still shows some calibration problems with classical methods. However, these should be solvable by further research.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 13:12:36