Upwelling history of the Mediterranean Sea revealed by stunted growth in the planktic foraminifera Orbulina universa (early Messinian, Crete, Greece)
详细信息 查看全文
- 作者：T. C. Brachert ; A. Bornemann ; M. Reuter…
- 关键词：Orbulina universa ; Size variation ; Sapropel cycle ; Reef corals ; Late Miocene ; Crete/Greece
- 刊名：International Journal of Earth Sciences
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：104
- 期：1
- 页码：263-276
- 全文大小：592 KB
- 参考文献：1. Bé AWH (1977) An ecological, zoogeographic and taxonomic review of recent planktonic foraminifera. In: Ramsey ATS (ed) Oceanic micropaleontology, vol 1. Academic Press, London, pp 1-00
2. Bé AWH, Duplessy J-C (1976) Subtropical convergence fluctuations and Quaternary climates in the middle latitudes of the Indian Ocean. Science 194:419-22 CrossRef
3. Bé AWH, Harrison SM, Lott L (1973) / Orbulina universa d′Orbigny in the Indian Ocean. Micropaleontology 19:150-92 CrossRef
4. Bellanca A, Calderone S, Neri R (1986) Isotope geochemistry, petrology and depositional environments of the diatomite-dominated Tripoli Formation (lower Messinian), Sicily. Sedimentology 33:729-43 CrossRef
5. Bemis BE, Spero HJ, Bijma J, Lea DW (1998) Reevaluation of the oxygen isotopic composition of planktonic foraminifera: experimental results and revised paleotemperature equations. Paleoceanography 13:150-60 CrossRef
6. Bijma J, Faber WW, Hemleben C (1990) Temperature and salinity limits for growth and survival of some planktonic foraminifers in laboratory cultures. J Foraminifer Res 20:95-16 CrossRef
7. Bijma J, Hemleben C, Oberh?nsli H, Spindler M (1992) The effects of increased water fertility on tropical spinose planktonic foraminifers in laboratory cultures. J Foraminifer Res 22:242-56 CrossRef
8. Birck J-L (1986) Precision K–Rb–Sr isotopic analysis: application to Rb–Sr chronology. Chem Geol 56:73-3 CrossRef
9. Bornemann A, Norris RD (2007) Size-related stable isotope changes in Late Cretaceous planktic foraminifera: implications for paleoecology and photosymbiosis. Mar Micropaleontol 65:32-2 CrossRef
10. Bosellini FR, Perrin C (2008) Estimating Mediterranean Oligocene–Miocene sea-surface palaeotemperatures: an approach based on coral taxonomic richness. Palaeogeogr Palaeoclimatol Palaeoecol 258:71-8 CrossRef
11. Bosellini FR, Russo A, Vescogni A (2001) Messinian reef-building assemblages of the Salento Peninsula (southern Italy): palaeobathymetric and palaeoclimatic significance. Palaeogeogr Palaeoclimatol Palaeoecol 175:7-6 CrossRef
12. Brachert TC, Krautworst UMR, Srückrad OM (2002) Tectono-climatic evolution of a Neogene intramontane basin (Late Miocene Carboneras subbasin, SE Spain): revelations from basin mapping and biofacies analysis. Basin Res 14:503-21 CrossRef
13. Brachert TC, Reuter M, Kroeger KF, Lough J (2006) Coral growth bands: a new and easy to use paleothermometer in paleoenvironment analysis and paleoceanography (late Miocene, Greece). Paleoceanography 21:PA4217 CrossRef
14. Brachert TC, Vescogni A, Bosellini FR, Reuter M, Mertz-Kraus R (2007) High salinity variability during the early Messinian revealed by stable isotope signatures from vermetid and / Halimeda reefs of the Mediterranean region. Geol Romana 40:1-6
15. Braga JC, Aguirre J (2001) Coralline algal assemblages in upper Neogene reef and temperate carbonates in Southern Spain. Palaeogeogr Palaeoclimatol Palaeoecol 175:27-1 CrossRef
16. Braga JC, Martin JM (1996) Geometries of reef advance in response to relative sea-level changes in a Messinian (uppermost Miocene) fringing reef (Cariatiz reef, Sorbas Basin, SE Spain). Sediment Geol 107:61-1 CrossRef
17. Braga JC, Mar - 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Geology
Geophysics and Geodesy - 出版者：Springer Berlin / Heidelberg
- ISSN：1437-3262
文摘
Microfossil and stable isotope data (δ13C, δ18O) from deep-water sediments of Late Miocene age in the Mediterranean region have revealed a stepwise restriction of the Mediterranean prior to the Messinian Salinity Crisis which was modulated by a cyclicity responding to orbital precession. Very little is known with regard to the effects of these changes on shallow water environments of carbonate platforms and ramps. This work is based on a geological section on Crete (Greece) exposing sediments of early Messinian age, which documents the coeval response of pelagic and neritic systems to oceanographic changes. We discuss a dataset of planktic and benthic foraminifera assemblages in conjunction with size measurements (n?=?6,777) and isotope analyses (δ18O, δ13C) of the planktic foraminifera Orbulina universa with regard to reef growth patterns. The planktic foraminifera fauna displays pronounced cyclical abundance changes of warm, oligotrophic (O. universa) and cold, meso- to eu-trophic taxa (globigerinids, neogloboquadrinids). This cyclicity corresponds to lithological changes from laminated to homogeneous marls on the precessional frequency band. In beds rich in mesotrophic foraminifera, O. universa is rare and the test is ~50?% smaller than average. Growth and size of O. universa is affected by various environmental factors, including temperature, trophic resources, illumination and O2 content of ambient water. Explaining size variability by water temperature implies a change of ~11?°C over one precessional cycle. This estimate is in disagreement with growth patterns and stable isotope data of displaced reef corals (Porites, Tarbellastraea) documenting almost constant sea-surface temperatures, but substantial evaporation. Therefore, moderate temperature changes in a context of intense evaporation (high salinity) and water column destabilization associated with upward mixing of colder water masses with higher nutrient concentrations and low O2 content better fits size variation of O. universa. From the presence of Halimeda bioherms intercalated with the sapropel cycles, we infer cyclic photic zone anoxia and at least some sections with sapropel couplets to have formed in the neritic zone. We also suggest further testing of stunted growth of O. universa as a proxy for enhanced nutrient availability in future palaeoceanographic studies.