Detrital zircon age and Sr isotopic constraints for a Late Palaeozoic carbonate platform in the lower Rhodope thrust system, Pirin, SW Bulgaria

Bonev, Nikolay; Filipov, Petyo; Raicheva, Raya; Chiaradia, Massimo; Moritz, Robert

doi:10.1017/s0016756819001183

Cited by 8 publications

(1 citation statement)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, Late Ordovician (460–446 Ma) metagranites are widely reported from the Rhodope Complex (c.f. Bonev et al., 2019) but are rare in the Pontides (c.f. Akdoğan et al., 2021).…”

Section: Provenance Of the Thrace Basin—detrital Zirconsmentioning

confidence: 99%

Thrace Basin—An Oligocene Clastic Basin Formed During the Exhumation of the Rhodope Complex

Okay,

Özcan,

Siyako

et al. 2023

Tectonics

View full text Add to dashboard Cite

Some orogenic sedimentary basins are difficult to assign to a particular category. An example is the hydrocarbon‐bearing Thrace Basin in the northern Aegean. It has more than 9‐km‐thick Cenozoic clastic sediment, and is spatially associated with the Rhodope metamorphic core complex in the west, and with the Tethyan subduction‐accretion complexes in the south, and is cut by the North Anatolian Fault and its precursors. It has been interpreted variously as an intramontane, a forearc, or an orogenic collapse basin. Here, we provide new geochronological and biostratigraphic data to constrain the tectonic evolution of the Thrace Basin. The new data indicate that as an individual depocenter the Thrace Basin has a short age span (late Eocene—Oligocene, 36–28 Ma) and more than 90% of the basin fill consists of early Oligocene (34–28 Ma) siliciclastic turbidites, deposited at rates of 1.0 km/my. Paleocurrents and new detrital zircon U‐Pb ages show that the Rhodope Complex was the main sediment source. The exhumation of the northern Rhodope Complex (36–28 Ma) was coeval with the main subsidence in the Thrace Basin (34–28 Ma), and involved clockwise crustal rotation in the northern Aegean and possibly crustal flow from underneath the Thrace Basin. Crustal rotation is indicated by the paleomagnetic data, regional stretching lineations in the Rhodope Complex, and the triangular shape of the Thrace Basin. The rotating crustal block must have been bounded in the south by a sinistral fault zone; the location of which corresponds largely with the present day North Anatolian Fault.

show abstract

Section: Provenance Of the Thrace Basin—detrital Zirconsmentioning

confidence: 99%