Articles | Volume 43, issue 2
https://doi.org/10.5194/jm-43-283-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/jm-43-283-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
02 Aug 2024
Research article |
| 02 Aug 2024
| 02 Aug 2024
Cambrian Furongian–Middle Ordovician conodonts in the northeastern margin of the South China Block (Chuzhou, Anhui province) and their paleogeographic implications
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
School of Geographic Science, Nantong University, Nantong 226019, China
Min Li
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
Wei Xie
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
Xing Wei
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China
Related subject area
Palaeoceanography and palaeoenvironment
Population morphometrics of the Southern Ocean diatom Fragilariopsis kerguelensis related to sea surface temperature
Transient micropaleontological turnover across a late Eocene (Priabonian) carbon and oxygen isotope shift on Blake Nose (NW Atlantic)
Return to the Ross Ice Shelf Project (RISP), Site J-9 (1977–1979): perspectives of West Antarctic Ice Sheet history from Miocene and Holocene benthic foraminifera
South Georgia marine productivity over the past 15 ka and implications for glacial evolution
Paleoenvironmental changes related to the variations of the sea-ice cover during the Late Holocene in an Antarctic fjord (Edisto Inlet, Ross Sea) inferred by foraminiferal association
Late Holocene pteropod distribution across the base of the south-eastern Mediterranean margin: the importance of the > 63 µm fraction
Last Glacial Maximum to Holocene paleoceanography of the northwestern Ross Sea inferred from sediment core geochemistry and micropaleontology at Hallett Ridge
Benthic foraminifera or Ostracoda? Comparing the accuracy of palaeoenvironmental indicators from a Pleistocene lagoon of the Romagna coastal plain (Italy)
Joseph A. Ruggiero, Reed P. Scherer, Joseph Mastro, Cesar G. Lopez, Marcus Angus, Evie Unger-Harquail, Olivia Quartz, Amy Leventer, and Claus-Dieter Hillenbrand
J. Micropalaeontol., 43, 323–336, https://doi.org/10.5194/jm-43-323-2024, https://doi.org/10.5194/jm-43-323-2024, 2024
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We quantify sea surface temperature (SST) in the past Southern Ocean using the diatom Fragilariopsis kerguelensis that displays variable population with SST. We explore the use of this relatively new proxy by applying it to sediment assemblages from the Sabrina Coast and Amundsen Sea. We find that Amundsen Sea and Sabrina Coast F. kerguelensis populations are different from each other. An understanding of F. kerguelensis dynamics may help us generate an SST proxy to apply to ancient sediments.
Julia de Entrambasaguas, Thomas Westerhold, Heather L. Jones, and Laia Alegret
J. Micropalaeontol., 43, 303–322, https://doi.org/10.5194/jm-43-303-2024, https://doi.org/10.5194/jm-43-303-2024, 2024
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The Gulf Stream plays a crucial role in the ocean stability and climate regulation of the Northern Hemisphere. By analysing the fossil microorganisms that lived in the water column and the ocean floor, as well as reconstructing the ancient ocean's biogeochemistry, we were able to trace longitudinal shifts in the Gulf Stream during the late Eocene (36 Ma). Our results provide insight into the Gulf Stream's behaviour and the NW Atlantic's palaeoceanography during the Late Eocene (ca. 36 Ma).
Serena N. Dameron, R. Mark Leckie, David Harwood, Reed Scherer, and Peter-Noel Webb
J. Micropalaeontol., 43, 187–209, https://doi.org/10.5194/jm-43-187-2024, https://doi.org/10.5194/jm-43-187-2024, 2024
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In 1977-79, the Ross Ice Shelf Project recovered ocean sediments ~ 450 km south of the present-day ice shelf calving front. Within these sediments are microfossils, which are used to recreate the history of the West Antarctic Ice Sheet (WAIS) and address how the ice sheet responded to past times of extreme warmth. The microfossils reveal the WAIS collapsed multiple times in the past 17 million years. These results inform predictions of future WAIS response to rising global temperatures.
Jack T. R. Wilkin, Sev Kender, Rowan Dejardin, Claire S. Allen, Victoria L. Peck, George E. A. Swann, Erin L. McClymont, James D. Scourse, Kate Littler, and Melanie J. Leng
J. Micropalaeontol., 43, 165–186, https://doi.org/10.5194/jm-43-165-2024, https://doi.org/10.5194/jm-43-165-2024, 2024
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The sub-Antarctic island of South Georgia has a dynamic glacial history and is sensitive to climate change. Using benthic foraminifera and various geochemical proxies, we reconstruct inner–middle shelf productivity and infer glacial evolution since the late deglacial, identifying new mid–late-Holocene glacial readvances. Fursenkoina fusiformis acts as a good proxy for productivity.
Giacomo Galli, Caterina Morigi, Romana Melis, Alessio Di Roberto, Tommaso Tesi, Fiorenza Torricella, Leonardo Langone, Patrizia Giordano, Ester Colizza, Lucilla Capotondi, Andrea Gallerani, and Karen Gariboldi
J. Micropalaeontol., 42, 95–115, https://doi.org/10.5194/jm-42-95-2023, https://doi.org/10.5194/jm-42-95-2023, 2023
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A sediment core was analysed, focusing over the 2000 years, in Edisto Inlet. Benthic and planktic foraminifera were picked and used to determine changes in the faunal composition. Using other nearby cores, by comparing different proxies, we were able to identify a succession of three different environmental phases over the studied period: a seasonal-cycle phase (from 2000 to around 1500 years BP), a transitional phase (from 1500 to 700 years BP) and a cold phase (from 700 years to present).
Valentina Beccari, Ahuva Almogi-Labin, Daniela Basso, Giuliana Panieri, Yizhaq Makovsky, Irka Hajdas, and Silvia Spezzaferri
J. Micropalaeontol., 42, 13–29, https://doi.org/10.5194/jm-42-13-2023, https://doi.org/10.5194/jm-42-13-2023, 2023
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Planktonic gastropods (pteropods and heteropods) have been investigated in cores collected in the eastern Mediterranean along the Israeli coast in coral, pockmark, and channel areas. The sediment spans the last 5300 years. Our study reveals that neglecting the smaller fraction (> 63 µm) may result in a misinterpretation of the palaeoceanography. The presence of tropical and subtropical species reveals that the eastern Mediterranean acted as a refugium for these organisms.
Romana Melis, Lucilla Capotondi, Fiorenza Torricella, Patrizia Ferretti, Andrea Geniram, Jong Kuk Hong, Gerhard Kuhn, Boo-Keun Khim, Sookwan Kim, Elisa Malinverno, Kyu Cheul Yoo, and Ester Colizza
J. Micropalaeontol., 40, 15–35, https://doi.org/10.5194/jm-40-15-2021, https://doi.org/10.5194/jm-40-15-2021, 2021
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Integrated micropaleontological (planktic and benthic foraminifera, diatoms, and silicoflagellates) analysis, together with textural and geochemical results of a deep-sea core from the Hallett Ridge (northwestern Ross Sea), provides new data for late Quaternary (23–2 ka) paleoenvironmental and paleoceanographic reconstructions of this region. Results allow us to identify three time intervals: the glacial–deglacial transition, the deglacial period, and the interglacial period.
Giulia Barbieri and Stefano Claudio Vaiani
J. Micropalaeontol., 37, 203–230, https://doi.org/10.5194/jm-37-203-2018, https://doi.org/10.5194/jm-37-203-2018, 2018
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The challenge between benthic foraminifera and ostracoda is open: which is the most reliable microfossil group for precise palaeoenvironmental reconstructions? Results from a lagoonal succession of the Romagna coast (Italy) reveal that the winner is ostracoda, due to their higher abundance, higher differentiation, and precise relationships between species and ecological parameters. Nevertheless, palaeoenvironmental stress and additional details are provided by benthic foraminifera.
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Short summary
This study conducted systematic fieldwork and sample collection for the Cambrian Furongian–Middle Ordovician strata in the northeastern margin of the South China Block to establish a conodont biostratigraphic sequence and discussed the influence of seawater depth, climate, water temperature, and ocean currents on the biogeographic zonation of conodonts and the paleogeographic implications for some conodont species.
This study conducted systematic fieldwork and sample collection for the Cambrian...
