Comprehension of Residual Gravity Anomalies Across S-N Profiles in the Northwestern Part of Iraq

The studied region is located in northwest Iraq and spans
approximately 1673 km², with elevations ranging from 300 to 1350
meters above sea level. The study area is of oil importance due to
its proximity to the Tawki oil field with suitable conditions for
migration and storage. This area contains several significant
anticlines and is situated in the foothill and high folded zones.
(Dahkan, Bekher, Tawki, and others). There are 60 gravity points
on which the geophysical survey is based. After making corrections
to the gravity data, the Bouguer anomaly was computed at each
location. For the quantitative interpretation, the Geosoft Oasis
Montaj program's 2D modeling technique was used. A total of four
gravity profiles were created. The study's findings demonstrate that
the top depth of the basement rocks in the investigated region is
approximately 7 km, and gravity profiles in the sedimentary layers
indicate the presence of several faults. The modeled profiles' results
show that the sedimentary sections' "lows" and "highs" in gravity
correspond to various grabens, half-grabens, and horsts that are
encircled by normal and reverse faults.