Sentences with phrase «ancient sediments suggesting»
Scientists plumbing the depths of the central equatorial Pacific Ocean have found ancient sediments suggesting that one proposed way to mitigate climate warming — fertilizing the oceans with iron to produce more carbon - eating algae — may not necessarily work as envisioned.
http://www.geoengineeringwatch.org/ Not exact matches
The rocks surrounding the preserved tissues didn't contain the carbon - rich compounds, further suggesting the chemical remnants stem from preserved soft tissues and not ancient sediments, the team reports online today in Nature.
Since desiccation mudcracks form only where wet sediment is exposed to air, their position closer to the center of the ancient lake bed rather than the edge also suggests that lake levels rose and fell dramatically over time.
This suggests that petroleums and other noncoaly organic matter in ancient sediments are derived from lipids, or at least from certain components of the lipid fraction.
A recent study of ancient lake - bottom sediments found layers of charcoal next to layers of shrub pollen, suggesting a close link between shrubs and wildfire.