Paleomagnetic Study of the Neogene Formations of the Aegean Area

Kissel, Catherine; Làj, C.; Mazaud, Alain; Poisson, A.; Savascin, Y; Simeakis, K.; Fraissinet, Cyril; Mercier, J. L.

doi:10.1007/978-94-009-2253-2_9

Cited by 6 publications

(2 citation statements)

References 18 publications

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“…8). The Neogene rotation was tentatively interpreted by Muttoni et al (1995) in the framework of a complex history of local tectonic rotations, sometimes in opposite senses in adjacent blocks, that have occurred since the Early Miocene in the northeastern Aegean and western Anatolia (Kissel et al 1987; see also Kissel et al 1989). The pre-Neogene component of rotation was tentatively associated with the Korabi-Pelagonian microplate rifting as Chios moved independently of both West Gondwana and Laurussia (Muttoni et al 1995).…”

Section: Discussion a N D Conclusionmentioning

confidence: 99%

Magnetobiostratigraphy of the Spathian to Anisian (Lower to Middle Triassic) Kçira section, Albania

Muttoni

Kent

Meço

et al. 1996

Geophysical Journal International

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Magnetobiostratigraphic data are presented from three Early/Middle Triassic HanBulog Limestone successions from Kqira, northern Albania. A total of 206 standard palaeomagnetic samples were obtained for thermal demagnetization and statistical analysis from the 42, 10 and 5 m thick sections. The reversal-bearing characteristic component, carried by haematite and magnetite, defines a composite sequence of six main polarity intervals (Kqln to Kq3r) in which are embedded four short polarity intervals, one at the base of Kqln and three towards the top of Kqlr. The early acquisition of the characteristic remanence is supported by the lateral correlation of magnetozones between sections. The Early/Middle Triassic boundary, approximated by the first occurrence of the conodont Chiosella timorensis, falls close to the Kqlr/Kq2n polarity transition. This is in good agreement with recently published magnetobiostratigraphic data from the coeval Chios (Greece) sections. The palaeomagnetic pole calculated from the Kqira characteristic directions lies close to the Triassic portion of the apparent polar wander path for Laurussia (in European coordinates). However, a 40-45" clockwise rotation of the external zone of the Albano-Hellenic Belt to the south of the Scutari-Pec Line is thought to have occurred since the Early-Middle Miocene. The Kqira pole acquires a West Gondwana affinity when restored for the Neogene clockwise rotation. If the clockwise rotation was entirely related to Neogene tectonics, the Kqira area was evidently associated with West Gondwana and located at 12-16"N of the western Tethys margin.

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Section: Discussion a N D Conclusionmentioning

confidence: 99%

Magnetobiostratigraphy of the Spathian to Anisian (Lower to Middle Triassic) Kçira section, Albania

Muttoni

Kent

Meço

et al. 1996

Geophysical Journal International

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“…In the Plio-Quaternary period, its direction has rotated by following the entry of NAFS into the region. The Kazdağ range between the Yenice-Gönen and the Edremit Fault Zones rotated in counterclockwise direction and acquired a more E-W direction (Kissel et al, 1989;Zanchi et al, 1990;İşseven et al, 1995). By the rotation of the Kazdağ range, several diagonal faults with right-and left-lateral slips developed in the adjacent areas (Fig.…”

Section: Geometric and Kinematic Data And Paleostress Patternmentioning

confidence: 95%

Plio-Quaternary kinematic development and paleostress pattern of the Edremit Basin, western Turkey

et al. 2016

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Why are there no clockwise rotations along the North Anatolian Fault Zone?

Platzman¹,

Platt²,

Tapirdamaz³

et al. 1994

J. Geophys. Res.

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Mechanical analysis of lithospheric deformation associated with an intracontinental transform fault suggests that it should be associated with a pattern of vertical axis rotations governed by the length of the fault, its displacement, and the mechanical properties of the lithosphere. Paleomagnetic results from two transects across the North Anatolian Fault Zone indicate that there have been no measurable clockwise rotations on a regional scale associated with Neogene dextral strike‐slip motion along the fault. The data come from two groups of volcanic rocks that have been dated by K‐Ar whole rock geochronology and have yielded ages ranging from 45.3±3.1 m.y. to 41.8±1.3 m.y. (Eocene) and 21.7±1.5 m.y. to 7.5±0.2 m.y. (Miocene). The absence of clockwise rotations suggests one of the following explanations. (1) In contrast to the assumptions underlying current mechanical analyses, deformation in the upper crust may not directly reflect the flow in the lithosphere and is localized along a single fault trace. (2) Deformation is distributed, but rotations have been prevented by the presence of elongate fault blocks subparallel to the trace of the main fault. (3) Displacement along the North Anatolian Fault may be too small or the rheologic properties of the lithosphere such that rotations about vertical axes cannot be resolved. Instead of the predicted clockwise rotations, measured declinations show that there has been approximately 30° of anticlockwise rotation of both the Eocene and Miocene volcanic rocks. This suggests that no significant rotation occurred between Eocene and Miocene times and that the anticlockwise rotation occurred either immediately before or concurrent with the Plio‐Pleistocene slip on the North Anatolian Fault.

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Paleomagnetic Study of the Neogene Formations of the Aegean Area

Cited by 6 publications

References 18 publications

Magnetobiostratigraphy of the Spathian to Anisian (Lower to Middle Triassic) Kçira section, Albania

Magnetobiostratigraphy of the Spathian to Anisian (Lower to Middle Triassic) Kçira section, Albania

Plio-Quaternary kinematic development and paleostress pattern of the Edremit Basin, western Turkey

Why are there no clockwise rotations along the North Anatolian Fault Zone?

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