Data report: temporal change in fossil ostracode assemblages in the PlioceneHolocene strata of shelf IODP Site U1354 off the eastern coast of New Zealand

High-resolution analysis of fossil ostracode assemblages was performed in Pliocene to Holocene sections from Integrated Ocean Drilling Program Expedition 317 Site U1354 (water depth = 113 m), located on the continental shelf of the Canterbury Basin off New Zealand. In addition, samples from near the seafloor at Sites U1353 (water depth = 85 m), U1351 (122 m), and U1352 (344 m) were used to identify recent ostracode assemblages in the study area. At least 149 species and 60 genera of fossil ostracodes were identified from 142 core samples from Holes U1354B and U1354C, and many of them still inhabit the modern continental shelf around New Zealand and Australia.

show abstract

Data report: revised Pleistocene age model based on a modified nannofossil bioevent and additional measurements of benthic foraminiferal oxygen and stable carbon isotope ratios from Hole U1352B, offshore Canterbury Basin, New Zealand

Hoyanagi¹,

Tanaka²,

Takeuchi³

et al. 2018

Proceedings of the IODP

View full text Add to dashboard Cite

Reexamination of a nannofossil datum, the highest occurrence of Pseudoemiliania lacunosa (Zone NN20/NN19; 0.44 Ma), has led to a revised datum depth in Integrated Ocean Drilling Program Expedition 317 Hole U1352B. Furthermore, comparison between isotopic ratios of benthic foraminifers Nanionella flemingi and Uvigerina perigrina indicate that oxygen and carbon isotopic ratios for both species, when they occur in the same horizon, are almost identical. Therefore, we can correlate the oxygen isotopic variations of N. flemingi with the LR04 stack. We have conducted additional measurements of oxygen and stable carbon isotope ratios of N. flemingi, which in conjunction with our revised nannofossil datum allows a new correlation with the LR04 stack and results in revision of our original age model.

show abstract

Data report: temporal change in fossil ostracode assemblages in the PlioceneHolocene strata of shelf IODP Site U1354 off the eastern coast of New Zealand

Cited by 3 publications

References 14 publications

Untitled

Untitled