The combined use of the stable isotope compositions speleothem carbonate and inclusion-hosted water presents great potential in paleotemperature reconstructions, due to various temperature-dependent fractionations detected cave systems their environment. This paper evaluates applicational possibilities hydrogen oxygen measurements its host calcite, three different approaches: i) direct determin...

Floras of predominantly wet-soil environments show a greater than expected proportion of toothed leaves, affecting the outcome of leaf physiognomically based temperature estimates. New analyses of foliar physiognomy of plants growing in predominantly wet soils in modern forests suggest that current methods of inferring paleotemperatures from fossil floras yield underestimates of 2.5-10 degrees ...

A theory is described based on resonant thermal diffusion waves in the sun that explains many details of the paleotemperature record for the last 5.3 million years. These include the observed periodicities, the relative strengths of each observed cycle, and the sudden emergence in time for the 100 thousand year cycle. Other prior work suggesting a link between terrestrial paleoclimate and solar...

Isotopic analyses of subglacially precipitated calcite from near a modern temperate glacier show that the delta(18)O (= (18)O/(16)O relative to standard mean ocean water) of the calcite records the delta(18)O of the ice from that glacier. It may therefore be possible to determine the delta(18)O of Pleistocene ice sheets on the basis of isotopic analyses of calcite formed under that ancient ice....

In the manuscript by Wang et al., the authors claim that they have characterized the archaeal tetraether membrane lipids (GDGTs) produced by the marine euryarchaeota group II (MGII) and assess the effect of their synthesized lipids on the GDGT-based paleotemperature proxy TEX86. For that purposes, they analyzed core lipids (CL) and intact polar lipids (IPL) GDGTs, they performed 454 pyrosequenc...

Fossil assemblages of chironomid larvae (non-biting midges) preserved in lake sediments are well-established paleothermometers in north-temperate and boreal regions, but their potential for temperature reconstruction in tropical regions has never before been assessed. In this study, we surveyed subfossil chironomid assemblages in the surface sediments of 65 lakes and permanent pools in southwes...

s with Program, v. 22,7, p. A350. GREENWOOD, D.R., and CHRISTOPHEL, D.C., 2004, The origins and Tertiary history of Australian ‘‘Tropical’’ rainforests: in Bermingham, E., Dick, C., and Moritz, C., eds., Tropical Rainforests: Past, Present, and Future: Chicago University Press, Chicago. GREENWOOD, D.R., MOSS, P.T., ROWETT, A.I., VADALA, A.J., and KEEFE, R.L., 2003, Plant communities and climate...