09:18
Making the Pieces Fit: Seafloor Spreading
Alfred Wegener's hypothesis was rejected by many who felt it lacked a credible mechanism which could explain the continental movement hypothesized by Wegener. The notion of seafloor spreading, which suggested that new seafloor develops at oceanic ri...
02:03
The Ocean's Memory: Sediments and Earth's Magnetic Field
As with climate changes, there have been some unexplained aberrations in Earth's magnetic field during the recent past. Marine sediments provide important information that may help scientists better understand those aberrations.
06:22
The Ocean's Memory: Obtaining and Analyzing Sediment Samples
Despite its temporary nature, sediment remains uniquely valuable. As a result, oceanographers have worked hard to refine the process of obtaining and analyzing sediment samples.