A research team led by UC Riverside biogeochemists reports that oxygen-free and hydrogen sulfide-rich waters extended across roughly five percent of the ocean 93.9 million years ago -- far more than the modern ocean's 0.1 percent but much less than previous estimates for this event. Across this event, a major biological extinction in the marine realm took place. The new work shows that only portions of the ocean need to contain sulfide to greatly impact biota.
Fuente : http://www.eurekalert.org/pub_releases/2013-10/uoc...
Fuente : http://www.eurekalert.org/pub_releases/2013-10/uoc...