This information yields radiocarbon ages that can be equivalent to
foraminifera ages, representing the time since these organisms were alive at the surface of the ocean and thus the age of sedimentation.
Not exact matches
The team found that species of
foraminifera living on the sea floor around the time of the ice
age contained more carbon than those that floated at the surface (Science, DOI: 10.1126 / science.1188605).
«These include the sharp mud - over-peat contacts that are laterally continuous over 5 kilometers, changes in fossil
foraminifera assemblages across the buried peat contacts, long - lasting submergence also derived from fossil
foraminifera records, and radiocarbon
ages of plant macrofossils taken from buried peat deposits that are consistent with other southern Cascadia earthquake chronologies derived from buried peat and tsunami deposits.»
Much to their surprise carbon isotope measurements of
foraminifera shells (tiny plankton skeletons) showed the ventilation
age had actually decreased and there had been no extra CO2 storage in the deep Pacific during the latest ice
age, and no big release towards the end.
The Global Warming show purported to show 400,000 years of atmospheric CO2 levels, but did not overlay that data with temperature data (which is available via
foraminifera) or ice
age data.