MINERALOGY OF RECENT SEDIMENTS OF AL-TEEB RIVER
BASIN-EAST MISSAN GOVERNORATE,
SOUTHEASTERN IRAQ
الباحث الأول:
Ali Hasan Kadhim
الباحثين الآخرين:
Maysoon Omar Ali , Ahmed Jawad Al-Naji
المجلة:
(GEOSURV-IRAQ)
تاريخ النشر:
2 نوفمبر، 2023
مختصر البحث:
ABSTRACT
This research aims to define the mineralogical composition of recent sediments that were
deposited around the Al-Teeb River basin in the east Missan Governorate and try to determine
the provenance or the source of these sediments. …
ABSTRACT
This research aims to define the mineralogical composition of recent sediments that were
deposited around the Al-Teeb River basin in the east Missan Governorate and try to determine
the provenance or the source of these sediments. The study area represents the southeastern
edge of the Mesopotamian Plain and is part of it. 15 samples were collected from eight
stations of recent sediment that was deposited around the Al-Teeb River; two field works are
covered (December 2019 and August 2021). Mineralogical study of the sediment after
separating the light and heavy minerals by heavy liquid Bromoform in order to determine the
mineralogical composition of the studied samples by using the petrographic microscope the
light mineral fraction composed (95.5%) of the total mineralogy. The light components of
these sediments consist mainly of quartz about 25.31%, feldspars (potash and plagioclase
feldspar) about 9.53%, sedimentary rock fragments (carbonate rock fragments up to 33.39%,
chert rock fragments 7.65%, evaporates fragments, 7.31%), (igneous rock fragments, and
metamorphic rock fragments about 6.94%). The major component of the heavy minerals
residue is opaque minerals with a range of 36.76% and non-opaque minerals with a range of
63.24%. The non-opaque minerals are mainly of chlorite 7.42%, pyroxenes composed of both
orthopyroxene and clinopyroxene 6.37%, amphiboles composed of hornblende, glaucophane,
and tremolite 7.02%, (mica: biotite and muscovite) 9.81%, zircon 7.54%, tourmaline 5.1%,
epidote group 5.91%, rutile 4.5%, kyanite 2.2%. The sediments have two types of stability:
moderately stable and ultra-stable. The mineralogical composition shows that the major
sources of these sediments are; the river terraces and flood plain of the river in the
Mesopotamian Plain, another source of these sediments is the aeolian deposits that separated
from sand dune fields in the studied area, and outcrops of ancient sedimentary formations in
the southeastern of Iraq as specified by the incidence of the carbonate rock fragments.
