Vertical-axis block rotations linked to normal faulting: paleomagnetic and structural evidence from Miocene to Recent extensional basins in southern Turkey

2017-12-28
Koç, Ayten
Van Hinsbergen, Douwe
Kaymakcı, Nuretdin
Langereis, Cor
Paleomagnetism provides important constraints on complex patterns of vertical axis rotations in orogens. Where normally paleomagnetism is applied to constrain regional rotations, in the vicinity of fault zones often locally varying rotation patterns occur. Here we provide results of an extensive paleomagnetic survey constraining vertical axis rotation in Neogene extensional continental basins in the Taurides, in the eastern flank of the Isparta Angle (SW Turkey). In total, 437 oriented cores were sampled at 43 sites distributed within Miocene-Pliocene continental sed-imentary rocks from the basins at the eastern limb (Ilgın and Altınapa Basins) and also central part (Yalvaç Basin) of the Isparta Angle. Despite the more or less coherent overall strike of the mountain belt and sedimentary basins, our results show different senses and varying amounts of vertical rotation within short distances; the Altınapa Basin has undergone only very minor rotations during and after the Miocene, but the paleomagnetic data from Yalvaç and Ilgın basins show ∼50 • clockwise and ∼20 • counterclockwise rotation, respectively. Following a long history of shortening and thrusting, our study area has undergone regional extension since the mid-Miocene, which is still active in the present-day as portrayed by active seismicity, earthquake focal mechanisms, field data including fault plane solutions, and GPS measurements. This extension is accommodated along major normal faults that end in relay ramps with overlapping, adjacent normal faults. We show that the paleomagnetically determined rotations are related to such relay ramps, in places superimposed on rigid block rotations, and can be used as a first-order tool to quantify horizontal extension. As such, vertical axis rotations and paleomagnetism unravels important insights in the evolution of deformation in major normal fault zones.
19 th EGU General Assembly, EGU 2017

Suggestions

Uniform and Non-Uniform V-shaped Arrays for 2-D DOA Estimation
Filik, Tansu; Tuncer, Temel Engin; Yasar, T. Kaya (2008-04-22)
In this study, a new method for optimum design of uniform and non-uniform V-shaped arrays is presented for azimuth and elevation angle estimation. The proposed design method finds an optimum angle between the linear sub-arrays of the V-array by using the Cramer-Rao Bound (CRB) where statistical coupling effect between azimuth and elevation angle estimation is considered This method can be used to obtain directional and isotropic angle performances for uniform and non-uniform V-arrays. For non-uniform isotro...
Consideration of spatial variation of the length scale parameter in static and dynamic analyses of functionally graded annular and circular micro-plates
Eshraghi, Iman; Dağ, Serkan; Soltani, Nasser (2015-09-01)
This article introduces new methods for static and free vibration analyses of functionally graded annular and circular micro-plates, which can take into account spatial variation of the length scale parameter. The underlying higher order continuum theory behind the proposed approaches is the modified couple stress theory. A unified way of expressing the displacement field is adopted so as to produce numerical results for three different plate theories, which are Kirchhoff plate theory (KPT), Mindlin plate t...
Fluid-structure interactions with both structural and fluid nonlinearities
Bendiksen, O. O.; Seber, G. (Elsevier BV, 2008-08-19)
In this study, we consider a class of nonlinear aeroelastic stability problems, where geometric nonlinearities arising from large deflections and rotations in the structure interact with aerodynamic nonlinearities caused by moving shocks. Examples include transonic panel flutter and flutter of transonic wings of high aspect ratio, where the presence of both structural and aerodynamic nonlinearities can have a dramatic qualitative as well as quantitative effect on the flutter behavior. Both cases represent i...
Time-domain mapping of electromagnetic ray movement inside 2D anisotropic region
Biber, A; Golick, A; Tomak, Mehmet (2002-06-01)
The paper presents the extension of the time-domain mapping method applied to 2D billiard problem inside an anisotropic region bounded by ellipse [1]. In this paper, it has been considered the ray movement inside 2D anisotropic region bounded by arbitrary differentiable curve. It has been proved that the problem can be one-to-one mapped onto 2D mathemeatical billiard problem inside the region possessing isotropic properties by linear transformation of group velocity hodograph and boundary with the same coef...
Static and dynamic analysis of shear deformable composite shells of revolution by semi-analytical approach
Kayran, Altan (2013-10-18)
In the present study, multi-segment numerical integration technique is applied for the static and dynamic analysis of macroscopically anisotropic shells of revolution including transverse shear deformation. Application of the multi-segment numerical integration technique is achieved through the use of finite exponential Fourier transform of the fundamental shell of revolution equations governing the static loading and free vibration of the shell of revolution. For the non-axisymmetrically loaded shells of r...
Citation Formats
A. Koç, D. Van Hinsbergen, N. Kaymakcı, and C. Langereis, “Vertical-axis block rotations linked to normal faulting: paleomagnetic and structural evidence from Miocene to Recent extensional basins in southern Turkey,” presented at the 19 th EGU General Assembly, EGU 2017, 2017, Accessed: 00, 2021. [Online]. Available: http://adsabs.harvard.edu/abs/2017EGUGA..1910108K.