Kinematics of conjugate shear zones, displacement partitioning and fragmentation of the upper rigid crust during denudation of high-P rocks (Pelagonian and Sub-Pelagonian Zones, Greece)

Map view restoration of Aegean–West Anatolian accretion and extension since the Eocene

“…In southern Evvia, this breakaway fault is transferred southwestward along the Attica‐Evvia transfer fault to a position between the eastern Peloponnesos and the westernmost islands of the Cyclades. Given the absence of major transform faults delimiting the extensional domain in the northwest, we reconstruct extension along eastern mainland Greece as a vertical axis rotation of mainland Greece relative to the Chalkidiki peninsula around a pole located ∼60 km north of Mount Olympos, where the northernmost evidence for Miocene NE‐SW extension was reported [ Diamantopoulos et al , 2009]. The maximum amount of Miocene rotation around this pole is ∼15° (Figure 8): this aligns the breakaway fault west of Mts.…”

“…This western boundary is conceptually treated as a “break‐away fault,” marking the position where the detachment originally cut the surface at the inception of its activity. This line runs from northern Greece, ∼60 km north of Mount Olympos following Diamantopoulos et al [2009], along the western side of Mount Olympos and Mount Ossa and the Pelion, to the east coast of Evvia where no exhumed Miocene metamorphic rocks have been found (Figure 8). In southern Evvia, this breakaway fault is transferred southwestward along the Attica‐Evvia transfer fault to a position between the eastern Peloponnesos and the westernmost islands of the Cyclades.…”

“…However, as mentioned insection 4.1, rocks corresponding to the Basal Unit and the Cycladic Blueschist reappear along the east coast of mainland Greece, in windows on the Pelion peninsula [ Lips et al , 1999; Lacassin et al , 2007], and in the cores of Mount Ossa [ Lips et al , 1998] and Mount Olympos [ Godfriaux , 1970; Schermer , 1990, 1993; Nance , 2010]. Considerable exhumation by extension of probably Miocene age is also observed within the Pelagonian units north of Mount Olympos [ Diamantopoulos et al , 2009] (Figure 1). These extensional windows are associated with consistently NE‐SW oriented stretching lineations, i.e., parallel to the extension direction on the northwestern Cyclades, showing top‐to‐the‐SW sense of shear along the western margin of the exhumed metamorphics and top‐to‐the‐NE sense of shear along the east coast of mainland Greece (Figure 2).…”

“…Map showing the regional pattern of stretching lineations in the metamorphic complexes of the Aegean–West Anatolian region as well as the locations of the breakaways (dotted lines) of the major extensional metamorphic complexes. Lineation directions and senses of shear compiled from Walcott and White [1998], Brun and Sokoutis [2007], Rosenbaum et al [2007], Marsellos and Kidd [2008], Diamantopoulos et al [2009], Tirel et al [2009], van Hinsbergen and Boekhout [2009], Jolivet et al [2010c] and van Hinsbergen et al [2010a]. Paleomagnetic declinations compiled from Horner and Freeman [1982, 1983], Kissel et al [1984, 1985, 1989, 1995], Kissel and Poisson [1987], Kissel and Laj [1988], Tozzi et al [1988], Márton et al [1990], Scheepers [1992], Speranza et al [1992, 1995], Morris and Robertson [1993], Speranza and Kissel [1993], Mauritsch et al [1995, 1996], Morris [1995], Morris and Anderson [1996], Beck et al [2001], van Hinsbergen et al [2005b, 2008, 2010a, 2010b], Broadley et al [2006] and de Leeuw et al [2012].…”

Miocene south directed low‐angle normal fault evolution on Kea Island (West Cycladic Detachment System, Greece)

“…Attica (12,16,22,28,55) N/NE-S/SW top NNW (northwest); top SW/SSW (northeast and south) + + (1,2,3,23,31,39) a Numbers in parentheses are references. Reference key is as follows: 1, Altherr et al [1988]; 2, Altherr et al [1982]; 3, Altherr and Siebel [2002]; 4, Avigad and Garfunkel [1991]; 5, Avigad et al [1997]; 6, Avigad et al [1998];7, Brichau et al [2006]; 8, Brichau et al [2007]; 9, Brichau et al [2008]; 10, Bröcker and Franz [2006]; 11, Buick [1991]; 12, Diamantopoulos et al [2009]; 13, Faure et al [1991];14, Forster and Lister [2009]; 15, Gautier et al [1993]; 16, Gautier and Brun [1994]; 17, ; 18, ; 19, Huet et al [2009];20, Iglseder et al [2007]; 21, Iglseder et al [2008];22, Iglseder et al [2009]; 23, Iglseder et al [2009, and references therein]; 24, Jolivet and Patriat [1999]; 25, Jolivet et al [2004]; 26, Jolivet et al [2010aJolivet et al [ , 2010b; 27, Koukouvelas and Kokkalas [2003]; 28, Krohe et al [2010]; 29, Lee and Lister [1992]; 30, Lenauer et al [2008]; 31, Liati et al [2009]; 32, Lister et al [1984]; 33, Lister and Forster [1996]; 34,…”