Comment on "petrography and petrology of the calc-alkaline Sarihan granitoid (NE Turkey): An example of magma mingling and mixing"

In a recent paper, Aslan (2005) presents so far unique petrographic and geochemical data on Sarihan granodiorite from Eastern Pontides, NE Turkey. Several microtextural characteristics in conjunction with microgranular enclaves are accounted for mingling and mixing of distinct magmas. Tentatively a hybrid origin is suggested. As we have been working on the geodynamic evolution of the Eastern Pontides for several years, we have grown interested in his results. However, we were altogether disappointed to see (a) overall omission of some lithological units in the geological map of the area, and inconsistencies of field relations with the previously published and well-known data, (b) miscalculation of the age value of intrusion from the Rb-Sr whole-rock data and, (c) misidentification of some microtextures and failure to recognize the true nature of the Sarihan granodiorite. Hence, we, consider it necessary to comment briefly on this paper.