BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Greenhouse Algae: The Calcifying Phytoplankton during Cenozoic War
 m Climates - Tom Dunkley Jones\, University of Birmingham
DTSTART:20141202T160000Z
DTEND:20141202T170000Z
UID:TALK54598@talks.cam.ac.uk
CONTACT:John Maclennan
DESCRIPTION:Our understanding of the Cenozoic history of the Earth’s oce
 ans and climate is largely derived from the fossil remains of single-celle
 d marine organisms. In the deep-oceans these biomineralized remains are a 
 dominant component of sea-floor sediments and provide the basis for high-r
 esolution palaeoceanographic records spanning millions of years. Typically
  these are based on the geochemistry (stable isotopic and/or trace metal c
 omposition) of planktic and benthic foraminifera. Here\, I present complem
 entary approaches using the fossil remains of the dominant group of Cenozo
 ic marine calcifying phytoplankton\, the coccolithophore algae. These appr
 oaches focus on: 1) the use of exceptionally well-preserved\, Lagerstätte
 -quality\, fossil coccolith assemblages\; and 2) the application of novel 
 techniques to derive single-coccolith - and hence species-specific - trace
  element records from fossil assemblages. Both of these approaches can be 
 used to better understand the coupling of Earth’s climate and biosphere 
 during major climate transitions\, such as the onset of Antarctic glaciati
 on at the Eocene/Oligocene boundary. \n\nBown\, P. R\, Dunkley Jones\, T.\
 , Lees\, J.A.\, Pearson\, P.N.\, Randell\, R.\, Coxall\, H.K.\, Mizzi\, J.
 \, Nicholas\, C.\, Karega\, A.\, Singano\, J.\, Wade\, B.S. 2008. A calcar
 eous microfossil Konservat-Lagerstätte from the Paleogene Kilwa Group of 
 coastal Tanzania. GSA Bulletin 120:3-12\, \ndoi:10.1130/B26261.1.\n\nPears
 on\, P. N. McMillan\, I. K.\, Wade\, B. S.\, Dunkley Jones\, T.\, Coxall\,
  H. K.\, Bown\, P. R. and Lear\, C. H. 2008. Extinction and environmental 
 change across the Eocene/Oligocene boundary in Tanzania. Geology 36:179-18
 2\, doi:10.1130/G24308A.\n\nPrentice\, K\, Dunkley Jones\, T\, Lees\, J\, 
 Young\, J\, Bown\, P\, Langer\, G\, Fearn\, S and Ion Microprobe Facility 
 NERC. 2014. Trace metal (Mg/Ca and Sr/Ca) analyses of single coccoliths by
  Secondary Ion Mass Spectrometry. Geochimica et Cosmochimica Acta. doi.10.
 1016/j.gca.2014.09.041\n
LOCATION:Harker 1 seminar room\, Department of Earth Sciences
END:VEVENT
END:VCALENDAR