petrology of ultramafic and related rocks along iraqi zagros thrust zone

(Schwartz, 1992), and the fourth action of barium-sodium-rich fluids on
plagiogranite (Mohammad et al., 2007)
2- Aim of the study
In north and north-eastern Iraq, several serpentinized ultramafic
and related rocks are exposed along the Iraqi Zagros Thrust Zone; they are
from southeast to northesat, Penjwin, Mawat, Pauza and Qalander
ultramafic bodies. These bodies are considered to have been fragments of
consumed Thethyan oceanic lithosphere between Arabian and Iranian
plates (Mahmmod, 1978; Al-Hassan, 1982; Aqrawi, 1990; Mohammad,
2004, Mohammad and Maekawa, 2007). However, on origin of these
serpentiniteized ultramafic bodies, whether these serpentinized ultramafic
bodies represent a remnant serpentinized peridotite of ophiolite sequences
or serpentinized mantle wedge peridotite is still debated due to the
absence of critical petrological and geochemical data.
This study tries to answer the following questions in regard to the
serpentinzed peridotite and related rocks along Iraqi Zagros Thrust Zone:
1. What kind of mineralogical and petrological features characterize
the serpentinized ultramafic bodies?
2. What types of ultramafic rocks are representative in serpentinized
peridotite along the Iraqi Zagros Thrust Zone?
3. How were serpentinized peridotites emplaced in the present
position?
4. What kind of tectonic settings were these bodies situated?
5. How did the serpentinization take place in the formation process of
theses rocks?
6. What kinds of rocks are associated with the serpentinzed
peridotites, and what are their mineralogy and origin?
7. What is the relation between serpentinization, rodingitization, and
albitization processes during evolution of peridotite?
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