TY  - JOUR
A1  - Zobir, Soraya Hadj
A1  - Oberhänsli, Roland
T1  - The sidi Mohamed peridotites (Edough Massif, NE Algeria) - evidence for an upper mantle origin
T2  - Journal of earth system science
N2  - The Hercynian Edough massif is the easternmost crystalline massif of the Algerian coast. It consists of two tectonically superposed units composed of micaschists, gneisses, and peridotite. This study concentrates on the small and isolated Sidi Mohamed peridotite outcrop area (0.03 km(2)). The Sidi Mohamed peridotite is composed mainly of harzburgites (Mg-rich olivine and orthopyroxene as major minerals). The Ni (2051-2920 ppm), Cr (2368-5514 ppm) and MgO (similar to 28-35 wt.%) whole-rock composition and the relative depletion in Nb make these harzburgites comparable to depleted peridotites related to a subduction zone. We suggest that the Sidi Mohamed ultramafic body was derived directly from the upper mantle and tectonically incorporated into the gneiss units of the Edough metamorphic core complex in a subduction environment.
KW  - Peridotites
KW  - upper mantle
KW  - Edough
KW  - Algeria
Y1  - 2013
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/34545
SN  - 0253-4126
SN  - 0973-774X
VL  - 122
IS  - 6
SP  - 1455
EP  - 1465
PB  - Indian Academy of Science
CY  - Bangalore
ER  -