The relative utility of foraminifera and diatoms for reconstructing late Holocene relative sea-level change in North Carolina, USA
| Autor: | Stephen J. Culver, Orson van de Plassche, D. Reide Corbett, Benjamin P. Horton, Andrew C. Kemp, Robin J. Edwards |
|---|---|
| Přispěvatelé: | Marine Biogeology |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
010506 paleontology
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences biology biology.organism_classification Inlet 01 natural sciences Foraminifera Oceanography Arts and Humanities (miscellaneous) Barrier island Salt marsh Period (geology) General Earth and Planetary Sciences SDG 14 - Life Below Water Sea level Geology Holocene 0105 earth and related environmental sciences Earth-Surface Processes Chronology |
| Zdroj: | Quaternary Research, 71, 9-21. Academic Press Inc. Kemp, A C, Horton, B P, Corbett, R, Culver, S J, Edwards, R J & van de Plassche, O 2009, ' The relative utility of foraminifera and diatoms for reconstructing late Holocene relative sea-level change in North Carolina, USA ', Quaternary Research, vol. 71, pp. 9-21 . https://doi.org/10.1016/j.yqres.2008.08.007 |
| ISSN: | 0033-5894 |
| DOI: | 10.1016/j.yqres.2008.08.007 |
| Popis: | Foraminifera and diatoms preserved in salt-marsh sediments have been used to produce high-resolution records of Holocene relative sea-level (RSL) change. To determine which of these microfossil groups is most appropriate for this purpose we investigated their relative utility from salt marshes in North Carolina, USA. Regional-scale transfer functions were developed using foraminifera, diatoms and a combination of both (multi-proxy) from three salt marshes (Oregon Inlet, Currituck Barrier Island and Pea Island). We evaluated each approach on the basis of transfer-function performance. Foraminifera, diatoms and multi-proxy-based transfer functions all demonstrated a strong relationship between observed and predicted elevations (r2jack > 0.74 and RMSEP < 0.05 m), suggesting that they have equal utility. Application of the transfer functions to a fossil core from Salvo to reconstruct former sea levels enabled us to consider relative utility in light of ‘paleo-performance’. Fossil foraminifera had strong modern analogues, whilst diatoms had poor modern analogues making them unreliable. This result reflects the high diversity and site-specific distribution of modern diatoms. Consequently, we used foraminifera to reconstruct RSL change for the period since ∼ AD 1800 using a 210Pb- and 14C-based chronology, and we were able to reconcile this with tide-gauge records. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|