I do not think my interpretations need changing and have added citations to a parallel paper [ 129] where I discuss these palaeontological matters much more thoroughly and, in particular, present a detailed interpretation of the ultralight 2.78 Gy carbon isotope spike, showing that it could have been produced by an ecosystem with only eubacteria not archaebacteria.
All that carbon has spiked the Earth's atmosphere, jacking its concentration 43% since the 18th century from 280 parts per million to over 400 today.
A case has been made that the cause of the 774 775 carbon-14 spike was the result of a short GRB.
The approval of the enormous mine, which will cover 200 square kilometres, has enraged green groups, which claim the project will impact water supplies, cause carbon emissions to spike and damage the reef via a dredging project designed to expand the Abbot Point port.
Levels of the carbon 14 isotope spiked in the atmosphere during the 1970s due to nuclear tests, and have been declining ever since.
To verify the resistance selection of nitrifying bacteria indicated by PhyloChip-observed shifts in AOMs and NOBs, biomass from the three steady state SBRs on day 390 were inoculated to the conical flasks with organic carbon free media spiked with different dosages of ERY or ERY-H2O.
The neutrons sent flying by the bombs reacted with nitrogen in the atmosphere, creating a spike in carbon 14, an isotope (or variation) of carbon.
It's a voluntary commitment, and it's much smaller than most environmentalists believe is necessary to avoid a big spike in carbon emissions.
A stronger economy means greater demand for energy – and when 80 percent of the country's energy comes from fossil fuels, carbon emissions will probably spike again.
There were votes for an early start to the Anthropocene, 7000 years ago, when humanity began converting forests en masse to pastures and cropland, perhaps causing carbon dioxide (CO2) to spike, and also for 3000 years ago, when lead smelting tainted the ground.
