Akademik Veri Yönetim Sistemi
Engineering Applications, cilt.1, sa.2, ss.145-156, 2022 (Hakemli Dergi)
Tectonic slices of different origins are observed in the eastern of
Kargı (Çorum) district. These slices' metamorphic units and lithologies
of ophiolitic melange are observed with tectonic contact. The Çalarasın
formation is observed at the upper levels of the ophiolitic mélange,
which extends to the east of Kargı (Çorum) in the Central Pontides. The
formation is composed of thin-bedded siltstone intercalated
sandstone-shale and mudstone alternations. The sandstones of the
formation include quartz, plagioclase, calcite, biotite, chlorite, and
volcanic rock particles. The sandstones were analyzed for geochemical
properties and provenance traces, respectively. According to these
analyzes, SiO2 % is found between 26.46-71.78%, Al2O3% 5.22-10.86, Fe2O3%
2.89-7.11 and CaO% 6.13-36.02 respectively. When trace elements are
evaluated, Sc content ranges from 76.13-201.03 ppm, and Y content ranges
from 9.54-55.11 ppm. Sandstones are rich in large ion lithophile
elements (LIL; Ba, Th, U) and poor in high-field strength elements (HFS;
Nb, Ti, Zr). Positive anomalies in terms of Pb and Y and negative ones
in terms of Eu and P are observed in rocks. The sandstones are poor in
terms of REE. The amount of HREE is substantially richer than the amount
of LREE. Sandstones were normalized according to PAAS, and a
distribution inversely proportional to the primitive values emerged.
Ce/Ce* anomaly displays that the same oxygen environment has existed in
the environment for a long time, but this situation has changed in the
transition zone. Major oxide values suggest that the environment is arid
and semi-arid media. It was determined that the sandstones were fed
from the intermediate and mafic magmatic sources and tectonically
represented the active continental margin and the island arc area.