Did a blast of sea-floor gas usher in a new age?

Article Abstract:

Univ of Michigan researchers believe that a humongous release of methane gas from the ocean 55 million years ago caused climatic changes that altered the animal population. The methane warming could account for the abrupt appearance of modern mammals and the extinction of ocean foraminifera.

Environmental aspects, Methane, Evolution (Biology), Evolution, Paleobotany, Paleocene Epoch

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Cores document ancient catastrophe

Article Abstract:

Micrographic examination of ancient sea-floor sediment revealed debris which came from the meteorite which struck Earth 65 million years ago and contributed to a mass extinction. Analysis of sediment from an ancient sea floor revealed spherules from melted meteorite debris.

Analysis, Testimony, Meteors, Extinction (Biology), Sedimentary structures

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Ancient sea-level swings confirmed

Article Abstract:

Data from ocean drilling projects confirm the authenticity of the record of sea level changes over the past 250 million years compiled by Exxon scientists in the 1970s. However, scientists have little information on the cause of the oldest shifts in sea level.

Sea level, United States. National Science Foundation. Ocean Drilling Program, Exxon Production Research Co.

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