DOI: https://doi.org/10.14710/jgt.4.3.2021.126-133

Nanofosil Gampingan Formasi Ofu Berumur Neogen Di Pulau Rote

1Institut Teknologi Sumatera, Indonesia

2Pusat Survei Geologi, Badan Geologi, Kementerian ESDM, Indonesia

3Program Studi Teknik Geologi, Jurusan Teknologi, Produksi, dan Industri, Institut Teknologi Sumatera, Indonesia

4 Teknik Geologi, Institut Teknologi Bandung, Indonesia

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Received: 11 Apr 2021; Revised: 23 Jun 2021; Accepted: 21 Jul 2021; Available online: 3 Dec 2021; Published: 4 Dec 2021.
Open Access Copyright (c) 2021 Jurnal Geosains dan Teknologi under http://creativecommons.org/licenses/by-sa/4.0.

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Abstract

Formasi Ofu merupakan bagian paling muda dari sikuen Kolbano yang litologinya didominasi batugamping pelagik. Belum adanya penelitian tentang diversitas dan zonasi umur nanofosil gampingan menjadikan riset ini penting dilakukan. Riset ini berhasil mengidentifikasi tujuh famili dan 19 spesies nanofosil gampingan. Nanofosil gampingan didominasi genus Discoaster, Dictyococcites, dan Reticulofenestra yang dapat dibagi menjadi tiga zonasi, dan satu zona transisi Pliosen-Pleistosen. Permulaan Miosen, Burdigalian-Tortonian (zona NN 2-NN 10) ditandai pemunculan awal Helicosphaera kamptnerihingga pemunculan awal Discoaster quinqueramus. Zona NN11 yang berumur Tortonian-Messinian ditandai pemunculan awal hingga pemunculan akhir Discoaster quinqueramus. Zona NN12-NN15 (Messinian-Zanclean) ditandai pemunculan awal hingga pemunculan akhir Discoaster pansus. Transisi Pliosen-Pleistosen (NN 16-NN 21) ditandai dengan pemunculan akhir dari Discoaster pansus hingga pemunculan akhir Dictyococcites productus dan Helicosphaera princei. Tingginya diversitas nanofosil mengindikasikan kondisi upwelling. Melimpahnya genus Helicosphaera serta genus Calcidiscus merupakan indikasi daerah upwelling yang dipengaruhi oleh pertemuan arus hangat dan arus dingin.

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Keywords: Nanofosil gampingan; Neogen; Pulau Rote
Funding: Institut Teknologi Sumatera

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  6. De Wever, P., O’Dogherty, L., dan Gorican, S., 2014. Monsoon as a cause of radiolarite in the Tethyan realm. Geoscience, 346, 287-297. DOI: 10.1016/j.crte.2014.10.001
  7. Hu, X.M., Jansa, L., Wang, C.S., Sarti, M., Bak, K., Wagreich, M., Michalik, J., dan Sotak, J., 2005. Upper cretaceous oceanic red beds (CORBs) in the Tethys: Occurrences, lithofacies, age, and environments. Cretaceous Research, 26(1), 3-20. DOI: doi.org/10.1016/j.cretres.2004.11.011
  8. Hu, X., Hu, X., Wagreich, M., dan Yilmaz, I.O., 2012. Marine rapid environmental/climatic change in the cretaceous greenhouse world. Cretaceous Research, 38, 40-51. DOI: doi.org/10.1016/j.cretres.2012.04.012
  9. Ines, G., 2017 Sarmatian calcareous nannofossil assemblages in the SW Paratethyan marginal marine environments: implications for palaeoceanography and the palaeoclimate. Progress in Oceanography, doi: http://dx.doi.org/10.1016/j.pocean.2017.05.011
  10. Martini, E., 1971. Standard Tertiary and Quaternary calcareous nannoplankton zonation. Proceedings, 2nd Planktonic Conference, Roma, 739-784
  11. Perch-Nielsen, K., 1985. Cenozoic Calcareous nannofossils, dalam H. Bolli, J.B. Saunders and K. Perch-Nielsen, ed., Plankton stratigraphy, 427-554 hal., Cambridge Earth Sci. Ser., London-UK
  12. Rahman, A. dan Roth, P.H., 1990. Late Neogene paleoceanography and paleoclimatology of the Gulf of Aden region based on calcareous nannofossils. Paleoceanography, 5, 91-107. DOI: doi.org/10.1029/PA005i001p00091
  13. Rosidi H.M.D., Tjokrosapoetro, S., dan Gafoer, S., 1979. Peta Geologi Lembar Kupang, Timor. Pusat Penelitian dan Pengembangan Geologi, Bandung
  14. Rosidi H.M.D., Tjokrosapoetro, S., dan Gafoer, S., 1996. Peta Geologi Lembar Kupang-Atambua, Timor. Pusat Penelitian dan Pengembangan Geologi, Bandung
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  16. Sawyer. R. K., Sani, K., dan Brown, S., 1993. The stratigraphy and sedimentology of West Timor, Indonesia. Proceedings of Indonesian Petroleum Association 22nd Annual Convention, Jakarta, Indonesia, 533-574
  17. Silva, A., Palma, S., dan Moita, M.T., 2008. Coccolithophores in the upwelling waters of Portugal: Four years of weekly distribution in Lisbon bay. Continental Shelf Research, 28, 2601–2613. DOI: 10.1016/j.csr.2008.07.009
  18. Villeneuve, M., Bellon, H., Martini, R., Harsolumakso, A., Cornée, J. J., 2013. West Timor: a key for the eastern Indonesian geodynamic evolution. Bull. Soc. géol. France, 184(6), 569-354
  19. Wang, C., Hu, X., Huang, Y., Scott, R., dan Wagreich, M., 2009. Cretaceous oceanic red beds (CORB): A window on global oceanic/climatic change, 13-33 dalam Hu, X., Wang, C., Scott, R.W., Wagreich, M., dan Jansa, L., (Ed.), Cretaceous oceanic red beds: Stratigraphy, composition, origins and paleoceanographic/ paleoclimatic significance, 276 hal., SEPM Special Publication 91, Tulsa, OK-USA

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