2019
DOI: 10.1029/2019pa003597
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Low‐Latitude Calcareous Nannofossil Response in the Indo‐Pacific Warm Pool Across the Eocene‐Oligocene Transition of Java, Indonesia

Abstract: We reconstruct the calcareous nannofossil response to the Eocene-Oligocene Transition (EOT)-the most significant climate transition of the Cenozoic-in the Indo-Pacific Warm Pool. Data from south central Java consist of species relative abundance counts of well-preserved nannofossil assemblages. From the late middle Eocene to early Oligocene species biodiversity declined, with the most rapid species loss occurring across the latest Eocene rosette-shaped discoaster extinction event (DEE;~34.44-34.77 Ma). A decli… Show more

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Cited by 11 publications
(20 citation statements)
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References 82 publications
(148 reference statements)
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“…R. dictyoda, Z. bijugatus, and L. minutus declined across the EOB and remained rare and sporadic during the early Oligocene. A similar threefold subdivision separated by two major shifts across the EOT has been previously identified in Tanzania by Dunkley Jones et al (2008) and in Indonesia by Jones et al (2019). Sea-level low and the substantial increase in nutrient supply to the Neo-Tethys at the very start of the EOT (Jovane et al, 2009) associated with enhanced continental weathering are the main drivers of observed changes in CN assemblages.…”
Section: Global Comparison Of Changes In Nannofossil Assemblages Acrosupporting
confidence: 73%
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“…R. dictyoda, Z. bijugatus, and L. minutus declined across the EOB and remained rare and sporadic during the early Oligocene. A similar threefold subdivision separated by two major shifts across the EOT has been previously identified in Tanzania by Dunkley Jones et al (2008) and in Indonesia by Jones et al (2019). Sea-level low and the substantial increase in nutrient supply to the Neo-Tethys at the very start of the EOT (Jovane et al, 2009) associated with enhanced continental weathering are the main drivers of observed changes in CN assemblages.…”
Section: Global Comparison Of Changes In Nannofossil Assemblages Acrosupporting
confidence: 73%
“…Sea-level low and the substantial increase in nutrient supply to the Neo-Tethys at the very start of the EOT (Jovane et al, 2009) associated with enhanced continental weathering are the main drivers of observed changes in CN assemblages. Increased productivity during the EOT has been reported in different basins (Bordiga et al, 2015;Dunkley Jones et al, 2008;Jones et al, 2019;Kiefer et al, 2006;Sarmiento et al, 2004) as a response to the high-latitude cooling and ocean circulation reorganization. Regarding the age of the major shifts, the extinction of D. saipanensis defines the DEE at~34.35 Ma and corresponds to the first response to the paleoclimatic perturbations associated with the EOT in the South-Western Neo-Tethys.…”
Section: Global Comparison Of Changes In Nannofossil Assemblages Acromentioning
confidence: 97%
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