In the wake of a counterclockwise rotating Adriatic microplate: Neogene paleomagnetic results from northern Croatia

Abstract

In northern Croatia, the Neogene sediments cover complicated basement rocks which consist of Alpine and Dinaridic elements in the Zagorje area, and Variscan -Alpine formations of the Tisia (Tisza) megatectonic unit in the Slavonian Mountains (Mts.). The Neogene sediments were deposited in two separate basins before the Karpatian, but sedimentation became uniform from the Karpatian onwards (~17.5 Ma). Of the 24 localities that we have studied so far paleomagnetically from northern Croatia, 16 localities are of Karpatian or younger age, while the rest are pre-Karpatian.As a result of laboratory analysis, 16 localities yielded tectonically interpretable results. Our data suggests that northern Croatia shifted northwards, while rotating moderately counterclockwise, probably before the Karpatian. A second counterclockwise rotation occurred at the present latitude in post-Pontian times. There is no significant difference between localities situated above different basements, though Tisia is pictured as rotating clockwise in the Neogene. The paleomagnetic pattern of northern Croatia resembles that of areas situated north of the Periadriatic-Balaton line. Therefore, we conclude that northern Croatia is part of a larger block, dissected by several important tectonic lines, driven by the counterclockwise rotated Adriatic microplate.

Identification of tectonically active areas using DEM: a quantitative morphometric analysis of Mt. Medvednica, NW Croatia

“…Its pres ent-day po si tion and trend are ex plained by an east ward dis place ment (tec tonic es cape) and approx. 130° clock wise ro ta tion of the tec tonic block com pris ing Medvednica and its sur round ing inselbergs dur ing the Lat est Paleogene-Ear li est Neo gene (Márton et al, 2002;Tomljenoviae et al, 2008). These move ments were prob a bly re lated to the ini tial stage of Mio cene east ward ex tru sion of wedge-shaped crustal blocks of the East ern Alps-Pannonian Ba sin tran si tion.…”

Seismic stratigraphy based chronostratigraphy (SSBC) of the Serbian Banat region of the Pannonian Basin

“…Progradation of deltaic clastic systems, shallowing, and finally infilling of the basin during latest Miocene -Early Pliocene was probably caused by deceleration of basin subsidence. During Mio-Pliocene times, and more intensively in the Quaternary, another compressive phase took place in the Pannonian Basin [27][28][29]. The renewed crustal shortening resulted in the reactivation of former extensional faults as reverse faults, and gentle folding of the overlying strata [30] as a thin-skinned response.…”

Palaeomagnetism and rock magnetism of the Permian redbeds from the Velebit Mt. (Karst Dinarides, Croatia): dating of the early Alpine tectonics in the Western Dinarides by a secondary magnetization

“…Tertiary history of Alcapa, Tisza-Dacia and Adria terranes is constrained by a wealth of geological and palaeomagnetic data (Channell, 1996;Csontos and Vörös, 2004;Neugebauer et al, 2001;Satolli et al, 2007Satolli et al, , 2008Stampfli and Borel, 2002;Van Dijk and Scheepers, 1995). Significant progress in the Dinarides has recently been made due to works of Emő Márton and co-workers (Márton et al, 1995(Márton et al, , 2002(Márton et al, , 2003(Márton et al, , 2006(Márton et al, , 2008(Márton et al, , 2010(Márton et al, , 2014; see also Márton and Veljović, 1983). Palaeomagnetic data acquired in the Dinaric chain (the north-eastern part of the Adria terrane) suggest that the whole unit experienced 35°c ounter-clockwise rotation with respect to Africa during late Miocene-Pliocene (Márton et al, 1999, 2002 andreferences therein).…”