T. Gungor et B. Erdogan, Emplacement age and direction of the Lycian nappes in the Soke-Selcuk region, western Turkey, INT J E SCI, 89(4), 2001, pp. 874-882
In the Soke-Selcuk region, western Turkey, the northernmost exposures of th
e Lycian nappes are found as tectonic slices on the Menderes Massif. The Me
nderes Massif is represented by a continuous platform sequence and a blocky
unit. The lower parts of the Menderes platform sequence is composed of Tri
assic-Jurassic marbles and an alternation of calcschists and micaschists: h
owever, the upper parts are composed of emery- and rudist-bearing massive m
arbles. Along a gradational boundary, a blocky unit is found on top of the
platform sequence, and it comprises blocks of metaophiolite and emery-beari
ng marble set in garnet-micaschists matrix. Along a low-angle fault marked
by thin slices of red-green phyllites, tectonic slices of the Lycian nappes
overlay garnet-micaschists of the massif. The Lycian nappes are represente
d mainly by a carbonate sequence which consists of dolomites, oncoidal lime
stones. intraformational limestone conglomerates, and cherty limestones. In
the carbonate sequence of the Lycian nappes, undeformed primary structures
are clearly observed just several meters above the sole fault, indicating
a metamorphic break between the Lycian nappes and the Menderes Massif. The
linear fabric in red-green phyllites at the sole of the Lycian nappes trend
s NNE-SSW, gently plunges to SSW and NNE, and is parallel to the linear fab
ric of the neotectonic period in the western Turkey. S/C relation suggests
top-to-the SSW sense of shear in red-green phyllites. The deformation local
ized along the sole of the tectonic slices indicates that the red-green phy
llites acted as a decollement surface. The deformational features, stratigr
aphic relations, orientation of linear fabric and metamorphic break reveal
that Lycian nappes were emplaced on the Menderes Massif along a low-angle n
ormal fault, after the Early to Middle Eocene Main Menderes metamorphism an
d prior to the deposition of the Middle Miocene sedimentary cover.