Berita Sedimentologi
Vol 31, No 1 (2014)

Planktonic Foraminifera Biozonation of the Middle Eocene-Oligocene Kebo Formation, Kalinampu Area, Bayat, Klaten, Central Java

Dian Novita (Dept. of Geological Engineering, Gadjah Mada University, Yogyakarta)
Didit Hadi Barianto (Dept. of Geological Engineering, Gadjah Mada University, Yogyakarta)
Moch. Indra Novian (Dept. of Geological Engineering, Gadjah Mada University, Yogyakarta)

Article Info

Publish Date
07 Aug 2021

Abstract

Research on foraminifera from the Paleogene volcanoclastics-dominated Kebo Butak Formation of Central Java is limited. A study was conducted in the Kalinampu and surrounding areas of Bayat, Klaten, Central Java. The study included measuring of three stratigraphic sections and geological mapping. The study area contains the Nampurejo pillow lava, which is considered to be the base of the Kebo-Butak Formation (part of the 'Old Andesites' complex of South Java), but its Middle Eocene age is older than previously assumed.Correlation and biozone interpretation allowed the recognition of 12 planktonic foraminifera zones, ranging in age from Middle Eocene (P11) to Early Miocene (N5). Depositional environments are all deep marine, ranging from lower bathyal to upper bathyal.

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Journal Info
Berita Sedimentologi
Website

Abbrev

FOSI

Publisher

Forum Sedimentologiwan Indonesia

Subject

Earth & Planetary Sciences

Description

BERITA SEDIMENTOLOGI aims to disseminate knowledge on the field of sedimentary geology to its readers. The journal welcomes contributions in the form of original research articles, review articles, short communications and discussions and replies. Occasionally, Berita Sedimentologi also includes ...