Miocene marine successions in the northeast of Kahramanmaraş basin (SE Türkiye)


Gül M., GÜRBÜZ K., Cronin B. T., Darbaş G.

Mediterranean Geoscience Reviews, 2024 (Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2024
  • Doi Numarası: 10.1007/s42990-024-00132-8
  • Dergi Adı: Mediterranean Geoscience Reviews
  • Derginin Tarandığı İndeksler: Scopus, Geobase
  • Anahtar Kelimeler: Foreland basin, Miocene sedimentation, SE Türkiye, Shallow marine, Submarine fan, Submarine slope
  • Çukurova Üniversitesi Adresli: Evet

Özet

The Kahramanmaraş Basin (SE Türkiye) was a peripheral foreland basin that developed under compression during the collision of the Arabian Plate (underlying plate) and the Anatolide-Taurides Platform (overlying plate) during the Eocene. In the northeastern part of the basin, tectonic activity sculpted a diverse marine environment with a rugged sea floor ranging from shallow to deep waters. Early Miocene transgression initially caused the deposition of the planktonic foraminifera-bearing claystones and, to a lesser extent, the pelecypoda-bearing marls in this region. The reefal limestone around Atlık Mountain (N of Ilıca Town) reflects the regressive phase at the beginning of the Middle Miocene. Further regression and/or continuous uplift of the thrust zones in this area formed the Ilıca Submarine Fan channels that are mainly filled with clast-supported and, to a lesser extent, matrix-supported conglomerate. The Middle Miocene time in the south of Ilıca Town is represented by muddy debris flow deposits within the submarine slope environment. Debrites in the eastern part of the basin are dominated by ophiolite pebbles, while those in the western part include abundant limestone pebbles, thus reflecting the variation in the source of the debris flows. Thick claystones deposited between debrite levels and in parts extending into the deep sea depend on stagnant water conditions. Small-scale sea-level fluctuations caused the deposition of sandy deep-water channel deposits (with subordinate conglomerates) above the debris flow-dominated packages. Those detrital sedimentary deposits south of the Ilıca Town appear to have been combined, reworked, and transported further south-southwest of the Kahramanmaraş Basin via a single large submarine fan canyon termed the Alikayası Canyon. Tectonic activities were the primary controlling factor on Miocene sedimentation, while sediment input and sea level changes played a secondary role.