PREHISTORIC OCEAN FLOOR - 250 MILLION YEARS OLD - BELOW TODAY'S OCEAN FLOOR

 SCITECH DAILY : DISCOVERY OF ANCIENT SEA FLOOR 

Excerpt: Scientists from the University of Maryland have identified remnants of a prehistoric seafloor that plunged into the Earth’s depths during the age of dinosaurs, calling into question prevailing views on the Earth’s interior structure. Found at the East Pacific Rise, a tectonic boundary on the floor of the southeastern Pacific Ocean, this previously unexplored segment of seafloor reveals new aspects of our planet’s inner processes and its transformative history over millions of years. The team’s findings were published on September 27, 2024, in the journal Science Advances.

CAL TECH : NEW TECHNOLOGY TO DETECT EARTH'S PLATES BELOW THE SURFACE

CAL TECH : NEW TECHNOLOGY - EARTH'S PLATES 

Excerpts: Caltech researchers have developed a new method to study the earth's structure deep beneath the surface, at the boundary between Earth's brittle crust and the underlying mantle, a region called the Mohorovičić discontinuity—Moho for short.

.....On continents, the Moho can be found at depths ranging between 20 and 70 kilometers beneath the surface; in Southern California, the Moho is around 45 kilometers belowground. Attempts had been made to image it using conventional seismometers, but these efforts either yield low-resolution results, on the scale of tens of kilometers, or were prohibitively expensive. With the DAS method, researchers can easily observe the structure of the Moho over large regions at a resolution of a kilometer, providing a far more detailed look at this geologically important region.

SEA FLOOR MAPPING BY THE UNITED STATES GOVERNMENT SCIENCE CENTER and WOODSHOLE COASTAL AND MARINE SCIENCE CENTER

USGS GOV - SCIENCE CENTER SEA FLOOR 

MARINE GEOLOGY!  How do scientist's discover what the sea floor looks like?

EXCERPT:  SFNG uses acoustic and optical techniques to acquire detailed geologic information about the sea floor, such as seabed topography, sediment composition and distribution, and underlying geologic structure.  This information defines the geologic framework and provides a base for a wide-range of USGS research. 

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