A quarry illustrating bands of stratified limestone from the ancient seafloor in what is now Mercato San Severino in Italy. Credit: Mariano Remírez, George Mason University
Human activity since the industrial revolution has already resulted in cumulative CO2 emissions representing 12 percent of the total CO2 released during the entire T-OAE, in less than 0.1 percent of the time. The T-OAE foreshadows what might happen to our oceans if greenhouse gas emissions continue to increase.
The team analyzed the samples for their uranium content and isotopic composition. Isotopes are twin version of an element with different number of neutrons, and thus very slightly different masses. The relative abundance of isotopes of uranium in the ocean depends on the amount of anoxia. This means that by measuring the isotopic composition of uranium in the ocean, scientists can infer the amount of anoxia in the ocean.
The results indicate that past OAE events can foreshadow the effects of anthropogenic CO2 emissions on marine ecosystems.
Technology Technology Latest News, Technology Technology Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Source: SciTechDaily1 - 🏆 84. / 68 Read more »