SavedAdd your journal

Journals / Turkish Journal of Earth Sciences / 2019 / Cilt: 28 - Sayı: 2

Microborings as indication of cryptic life modes in the foraminifer Orbitoides: Maastrichtian sediments of the Haymana and Nallıhan districts (Ankara, Turkey)

Muhittin GÖRMÜŞ
Yusuf Kağan KADIOĞLU
Muhammed Sami US
Fuzuli YAĞMURLU
Huriye DEMİRCAN
Pages
232–251
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In conclusion, occurrences of microborings and encrustations are associated with parasitism by appearances ofMaeandropolydora osmaneliensis Nielsen and Görmüş, Curvichnus semorbis Nielsen and Oichnus simplex Bromley and commensallyattachment by microalgae.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Widespread Maastrichtian siliciclastics and carbonates cropping out in the Haymana (S Ankara) and Nallıhan (NW Ankara)districts in the northwest and central Anatolia basins include rich Orbitoides occurrences.
📊
Key Findings & Data:Microborings were analyzed in morethan 650 equatorial thin sections of the Orbitoides tests and 100 hard rock thin sections.
💡
Conclusion & Impact:In conclusion, occurrences of microborings and encrustations are associated with parasitism by appearances ofMaeandropolydora osmaneliensis Nielsen and Görmüş, Curvichnus semorbis Nielsen and Oichnus simplex Bromley and commensallyattachment by microalgae.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Widespread Maastrichtian siliciclastics and carbonates cropping out in the Haymana (S Ankara) and Nallıhan (NW Ankara)districts in the northwest and central Anatolia basins include rich Orbitoides occurrences. Microborings in the Orbitoides tests areinteresting to notify. In this study, the details of their morphologic structures were investigated. Microborings were analyzed in morethan 650 equatorial thin sections of the Orbitoides tests and 100 hard rock thin sections. The abundance of microborings increases in thesiliciclastics towards the Cretaceous/Palaeogene boundary (K/Pg). They were identified as Maeandropolydora osmaneliensis Nielsen andGörmüş, Maeandropolydora isp. Curvichnus semorbis Nielsen, Oichnus simplex Bromley, Oichnus isp. Maeandropolydora osmaneliensisNielsen and Görmüş. Maeandropolydora isp., semicircular to circular microborings of Curvichnus semorbis Nielsen and Oichnus simplexBromley are related to parasitic life modes. Irregular wider unidentified microborings are hermit type life mode tunnels. Abundance ofthe microborings might be related to shallower siliciclastic environmental conditions such as feeding and suitable Eh-pH, test shape,and easy entrance to the test for parasites. Smaller benthic foraminifera are seen in both microspheric and megalospheric Orbitoidestests as parasites. In conclusion, occurrences of microborings and encrustations are associated with parasitism by appearances ofMaeandropolydora osmaneliensis Nielsen and Görmüş, Curvichnus semorbis Nielsen and Oichnus simplex Bromley and commensallyattachment by microalgae.

🔖

Cite This Article

GÖRMÜŞ, M., KADIOĞLU, Y. K., US, M. S., YAĞMURLU, F., DEMİRCAN, H. (2022). Microborings as indication of cryptic life modes in the foraminifer Orbitoides: Maastrichtian sediments of the Haymana and Nallıhan districts (Ankara, Turkey). Turkish Journal of Earth Sciences, Cilt: 28 - Sayı: 2, 232–251. https://ajindex.com/articles/603025

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (15)

  1. Atıcı G, Dönmez M, Çobankaya M, Sevin M, Gündoğdu-Atakay E, Esirtgen E, Şimşek E (editors) (2014). MTA Genel Müdürlüğü 1/100000 ölçekli Türkiye Jeoloji Haritaları No: 209 Ankara J29 Paftası: MTA Jeoloji Etüdleri Dairesi (in Turkish). Banner FT (1971). A new genus of the Planorbulinidae. An endoparasite of another foraminifer. Rev Esp Micropaleontol 3: 113-128.
  2. Baumfalk YA, Nijholt KJ (1984). Talpinella and Orbitoides; 18 million years of close relationship between two foraminiferal genera. J Foram Res 14: 77-81.
  3. Baumfalk YA, Fortuin AR, Mok RP (1982). Talpinella cunicularia n. gen., n. sp., a possible foraminiferal parasite of Late Cretaceous Orbitoides. J Foram Res 12: 185-196.
  4. Bromley RG (1992). Bioerosion: eating rocks for fun and profit. In: Maples CG, West RR, editors. Trace Fossils. Short Courses in Paleontology 5. Knoxville, TN, USA: The Paleontological Society, pp. 121-129.
  5. Bromley RG (1981). Concepts in ichnotaxonomy illustrated by small round holes in shells. Acta Geol Hisp 16: 55-64.
  6. Crevison H, Hallock P (2007). Anomalous features observed on tests of live archaiasine foraminifers from the Florida Keys, USA. J Foram Res 37: 223-233.
  7. Freiwald A (1995). Bacteria-induced carbonate degradation: a taphonomic case, study of Cibicides lobatulus from a highboreal carbonate setting. Palaios 10: 337-346.
  8. Glynn PW (1997). Bioerosion and coral reef growth: a dynamic balance. In: Birkeland C, editor. Life and death of coral reefs. New York, NY, USA: Chapman and Hall, pp. 68-95.
  9. Golubic S, Radtke G, Le Campion-Alsumard T (2005). Endolithic fungi in marine ecosystems. Trends Microbiol 13: 229-235.
  10. Golubic S, Perkins RD, Lukas KJ (1975). Boring microorganisms and microborings in carbonate substrates. In: Frey RW, editor. The Study of Trace Fossils, Berlin, Germany: Springer-Verlag, pp. 229-259.
  11. Golubic S, Campbell SE, Drobne K, Cameron B, Balsam WL, Cimerman F and Dubois L (1984). Microbial endoliths: a benthic overprint in the sedimentary record, and a paleobathymetric cross-reference with foraminifera. J paleontol 58: 351-361.
  12. Görmüş M, Meriç E (2000). Unusual forms of orbitoidal foraminifera in the Maastrichtian of Turkey. Cretac res 21: 801-812.
  13. Görmüş M, Nielsen JK (2006). Borings in larger benthic foraminifers from Turkey and their palaeoenvironmental significance. J Foram Res 36: 152-165.
  14. Görmüş M, Sagular EK (1998). Microboring activity in Orbitoides accumulations from Turkey. Isr j Earth Sci 47: 61-67.
  15. Görmüş M, Meriç E, Uysal K, Nielsen JK (2005). Or