Students build ocean floor structures, then map and model an unfamiliar ocean floor. They are introduced to bathymetry and sea floor features, and discover one of the most widely usd methods for studying the ocean. Get Free Access See Review 5:34
Mid-Ocean Ridges. Mid-ocean ridges are divergent boundaries where convection currents in the mantle lift the ocean floor and produce a rift in the lithosphere that follows the crest of the ridge. New lithosphere is created by volcanic activity along the crest of the ridge, and the plates on either side of the ridge are moving away from one another.
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In 1980, the Township allocated $2,500 to refurbish the building. Interior renovations on the first floor were completed in May, 1980. A contract between the Township, the Association, and the Ocean County Library Commission created this new branch of the library system. It opened to the public on June 19, 1980.
Isochron maps of the ocean floor were first developed using data from oceanic rocks and sediment. Isochrons are imaginary lines on a map that show the parts of Earth's surface that are the same age. When geologists first analyzed isochron maps of the ocean floor, they discovered that Earth's crust is formed along ocean ridges and
much of the ocean. This region of steep temperature gradient is known as the permanent thermocline, beneath which, from about 1000 m to the ocean floor, there is virtually no seasonal variation and the temperatures are around 2 C. This narrow range is maintained throughout the deep oceans, both geographically and seasonally, because it is
Magnetic stripes on the ocean floor: a lab simulation Learning objectives: • the Earth’s magnetic field has ‘flipped’ (the N pole becoming the S pole, and vice versa) many times over geological time • as tectonic plates move apart, new rock is formed and locks in the direction of the magnetic field at the time Timing: 10 minutes