Coxall, Helen K. and Jones, Tom Dunkley and Jones, Amy P. and Lunt, Peter and Macmillan, Ian and Marliyani, Gayatri I. and Nicholas, Christopher J. and O’halloran, Aoife and Piga, Emanuela and Sanyoto, Prihardjo and Rahardjo, Wartono and Pearson, Paul N. (2021) The eocene−oligocene transition in nanggulan, java: Lithostratigraphy, biostratigraphy and foraminiferal stable isotopes. Journal of the Geological Society, 178 (6). ISSN 00167649
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Abstract
The Nanggulan section in south central Java comprises open marine sediments and volcanic deposits of Eocene– Oligocene age that accumulated in a marginal basin within the young Sunda Arc complex. A new borehole captures the stratigraphy and showcases the exceptional preservation of calcareous microfossils across an apparently complete Eocene– Oligocene Transition (EOT), a time interval significant for the initiation of continental-scale glaciation on Antarctica. Low-resolution benthic and planktonic foraminifera oxygen and carbon stable isotopes (δ18O and δ13C) record increasing δ18O and δ13 C in the basal Oligocene, allowing correlation to global records. Isotopic values imply warm temperatures and relatively high nutrients along the SE Java margin. The Nanggulan EOT is a valuable archive for reconstructing ocean–climate behaviour and plankton evolution and extinction in the Indo-Pacific Warm Pool. The borehole also adds to understanding of the early stages of Sunda Arc volcanism. © 2021 The Author(s).
Item Type: | Article |
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Additional Information: | Cited by: 4; All Open Access, Green Open Access, Hybrid Gold Open Access |
Uncontrolled Keywords: | Greater Sunda Islands; Java; Sunda Isles; Foraminifera; Boreholes; Isotopes; Stratigraphy; Submarine geology; Continental scale; Lithostratigraphy; Marine sediments; Microfossils; Oligocene; Sediment deposits; Stable isotopes; Sunda arc; Time interval; Volcanic deposits; biostratigraphy; foraminifera; lithostratigraphy; marine sediment; microfossil; reconstruction; stable isotope; volcaniclastic deposit; volcanism; Glacial geology |
Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
Divisions: | Faculty of Engineering > Geological Engineering Department |
Depositing User: | Sri JUNANDI |
Date Deposited: | 11 Sep 2024 03:52 |
Last Modified: | 11 Sep 2024 03:52 |
URI: | https://ir.lib.ugm.ac.id/id/eprint/5198 |