Oceanography

Oceanography

Q. What are manganese nodules where are they found, and how were the formed?

Answer

Precipitated hydroxides of iron and manganese on the ocean floor is called metal nodules Poly-metallic nodules or manganese nodules of the heart (Core) from the floor or phosphate processing (Phosphatized) shark's teeth, or central manganese crystallization as determined from time to time, and usually the heart of the Microfossil, bark, and even Manganese Nodule broken debris can (Bender et al, 1966). To boast about the size of 20cm from the size of the nodules varies to a level where you can see only with a microscope, the diameter of the bullet-shaped also. Usually about 5 ~ 10cm in diameter. In addition, the normal appearance of a wart look like, and sometimes irregularly shaped ones, can also be seen. Sediment deposits in the bottom part of the above usually tougher than

The development of nodules on the geology phenomenon is the slowest. Usually 1cm bigger, but time is needed for the hundreds of millions of years. Development of Manganese Nodule includes several steps, the first precipitation of the metal to the bottom of the sea. Rocks of the precipitate, and the process by which the second, third, due to the volcanic activity is to elicit from the metal springs. Fourth-through seawater and basalt pieces of decomposing finally, through the action of the organic matter of the metal hydroxide precipitate (Gursky et al, 2013).

Nodules from the sea as well as the lake can also be found with the highest content of nodules from the seabed 4000 ~ 6000m. Polymetallic nodules was first discovered in 1868 in the Siberian side of the Arctic Ocean, the Kara Sea Kara Sea from the end of HMS Challenger 1872-76 during the four years of scientific research, the nodule was found in any ocean ...