The tectono-sedimentary evolution of the Pelagonian Carbonate-Platform-Complex (Late Triassic - Late Jurassic, Evvoia, Greece)

• Autorzy: Scherreiks R. , Bosence D. , Boudagher-Fadel M.
• Konferencja: International Congress on the Jurassic System (7 ; 06-18.09.2006 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

Carbonate platforms are sensitive recorders of tectonic environments. However, the tectonosedimentary interplay between ancient carbonate platforms and ocean basins is not always recognizable as the oceans involved are not often preserved. In the case of the Pelagonian Carbonate-Platform-Complex, volcano-sedimentary successions of the one-time adjacent Maliac-Vardar Ocean (Stampfli et al. 2001) are partly preserved. These Late Triassic and Jurassic ocean floor deposits and their contemporaneous platform carbonates are being investigated in Evvoia, Greece (Fig. 1) (Scherreiks 2000; Gingins & Schauner 2005; Bosence et al. 2006). The carbonates exceed 1000 m in thickness whereas the contemporaneous oceanic succession of pillow basalt, radiolarite and pelagic carbonates is only about 100 m thick. The investigation shows that the Pelagonian platform-complex is composed of a number of different carbonate platform types (sensu Bosence 2005; Fig. 2). These evolved adjacent to five changing oceanictectonic settings which affected platform subsidence and uplift. 1. Late Triassic seafloor spreading was accompanied by the slow subsidence of a passive margin platform dominated by peritidal carbonates. 2. Late Liassic convergence coincided with stepped-up subsidence and the formation of a drowned or hemipelagic platform. 3. Initial collision during Early Kimmeridgian most likely caused platform tilting, enabling patch-reef development in the midst of the hemipelagic environment. 4. Early Tithonian obduction was contemporaneous with the formation of thrust-top platforms with associated neritic-reefal turbidite and debrite facies, intercalated in pelagic facies. 5. Advanced obduction, in the Late Tithonian, caused rapid subsidence and complete drowning of the platform complex below the CCD.

Słowa kluczowe

EN

carbonate platforms; tectonics; seafloor spreading; collision; Hellenides; Jurassic

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Volumina Jurassica
• Rocznik: 2006
• Tom: Vol. 4, no. 1
• Strony: 64--66
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Scherreiks R.

autor

Bosence D.

autor

Boudagher-Fadel M.

• Geologische Staatssammlung Bayerische Staatssammlung, Luisenstr. 37, D-80333 Munich, Germany,

Bibliografia

• 1. Bosence D. 2005. A genetic classification of carbonate platforms based on their basinal and tectonic settings in the Cenozoic. Sedimentary Geology, 175: 49-72.
• 2. Bosence D., Aurell M., Ben Khala A., Boudagher-Fadel M., Casaglia F., Cirilli S., Mehdie M., Nieto L., Procter E., Rey J., Scherreiks R., Soussi M. and Waltham D. 2006. The origin of high frequency, peritidal carbonate cycles: A regional comparative project from Liassic Platforms of the Western Tethys. AAPG Conference, Houston Texas 2006.
• 3. Gingins Y. and Schauner O. 2005. Etude géochimique et paléontologique des séries Maliaques d’Othrys et du complexe d’Elias, Eubée du Nord, Grèce. Université de Lausanne, Manuscript, February 2005, 93 pp.
• 4. Scherreiks R. 2000. Platform margin and oceanic sedimentation in a divergent and convergent plate setting (Jurassic, Pelagonian Zone, NE Evvoia, Greece) International Journal of Earth Science, 89: 90-107.
• 5. Stampfli G., Borel G., Cavazza W., Mosar J. and Ziegler P. A. 2001. The paleotectonic atlas of the Peri-Tethyan Domain, European Geophysical Society CD-ROM.