'Bathymetry, Sediments and Plate Tectonics\r'

'On surround 23, 1968 a Glomar Challenger ship was launched from Orange, Texas under the inspection of National Science Foundation and the Regents, University of California. This marked the number one of a new era in the flying field of oceanographic explorations. The Glomar Challenger explored the Atlantic, Indian and Pacific Oceans as surface as the Mediterranean and the Red Seas, drilled and cored the permeate of the ocean and collected core samples.These core samples became a definite proof for continental drift and ocean push down renewal at rift zones. The scheme proposed by Alfred Wegener that Earth once consisted of a hit land mass now known as Pangaea was proved by their findings. The theories attempting to explain the formation of vision ranges, thick-skulled sea trenches and earthquakes provided by the two geologists, W. Jason Morgan and Xavier Le Pichon also gained support from these findings.As for the evidence for sea floor spreading there be ample examples. Samples from the deep ocean floor show that Basaltic oceanic crust and overlying fix become a great deal younger while nearing the mid ocean ridge. The sediment cover is thinner near the ridge. Moreover the eld of the ocean is no more than 200 trillion years while the age of the Earth is most 3 billion years. Also evidence of semiweekly reversals in magnetic polarity of the Earth, or paleomagnetism proves the conjecture of sea floor spreading.The study of plate plate tectonic theory has advanced rapidly over the last 50 years. The advent of sophisticated oceanographic instruments has made the inaccessible regions well-to-do to access. The easiest method of sampling sea floor includes coring employ a long metal pipe charge at the top. Gravity covers collects samples of sea floor sediments. in that respect are machines that allow scientists to submerge beneath the pee and observe the sea floor. Submersibles stack carry up to a 5-person crew at a time.Most of these sub mersibles are geared with high frequency cameras, lights, mechanized armor for collection of samples, temperature measurers and other electromagnetic tools. Information regarding the deposit of the bedrocks underside be obtained by shipboard gravimeters that can measure rock density and magnetometers, which measure the magnetic properties. Reflection of sound waves is used in seismal service and help in getting learning ab tabu submarine topography and the thickness and folding and faulting of rocks cover with sediments.Seismic surveys are particularly helpful for finding out oil and gas deposits. Seismic surveys can be done by high voltage sparks, mechanical clappers or electronic pulse to progress to a spectrum of sonar frequencies. The Fundy Basin on Atlantic coast between New Brunswick and Nova Scotia is where the oldest ocean sediments can be found. References: xpubs. vsgs. gov/gip/dynamic/historical. html Wikipedia Glomar Challenger Wikipedia middle Atlantic Ridge Answ ers. com\r\n'