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Paleocene–Eocene Red Beds exist along a narrow belt in the NW–SE oriented imbricate zone in northeastern Iraq and are composed of clastic rocks including conglomerate, sandstone and mudstone.Trace elements show that the lower part of the Red Beds (unit one) was derived mainly from mafic and ultramafic rocks. A decrease in mafic and ultramafic components in the upper part of the Red Beds is accompanied...