Trace Fossils Of The Selorejo Formation, Rembang Zone, North East Java Basin, Indonesia

Authors

  • Siti Umiyatun Choiriah Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Yody Rizkianto Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Achmad Subandrio
  • Intan Paramita Haty Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Desi Kumala Isnani Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Nanda Ajeng Nurwantari Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Muhammad Ardiyan Syah Darmawa Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia
  • Hendry Wirandoko Department of Geology, Faculty of Mineral Technology, Universitas Pembangunan Nasional Veteran, Yogyakarta, Indonesia

DOI:

https://doi.org/10.25299/jgeet.2023.8.3.10454

Keywords:

Trace fossils, Ichnofacies, Rembang zone, North East Java basin

Abstract

The Rembang Zone of the North East Java Basin is a zone that develops as a petroleum system and is one of the areas with Indonesia’s largest oil reserves. One of the lithologies in the Rembang Zone is a sedimentary rock carbonated as a marker of marine sediments. The outcrop is continuous and rich in trace fossils, especially in the Ledok and Selorejo Formations. The existence of trace fossil outcrops is crucial for the learning process of earth science, biology, and other sciences, but recently these outcrops have been closed and have become damaged.  Their numbers are decreasing due to community mining activities, so unique research on trace fossils in the Rembang Zone must be done immediately. This research aims to discover the variation of trace fossils found in the Selorejo Formation. The methods used are field mapping, measured stratigraphic measurements, rock sampling, and laboratory analysis (sedimentology, petrography, and paleontology). The research shows trace fossils in Planolites, Helminthopsis, Thalassinoides, Conichnus, Chondrites, Macaronichnus, Bergauria, Ophiomorpha, Skolithos, Terebellina, Palaeophycus, and Asterosoma.

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Published

2023-08-30

Issue

Vol. 8 No. 3 (2023): JGEET Vol 08 No 03 : September (2023)

Section

Research Articles

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