Researchers have found a remarkable effect while studying how marine particles sink, which could affect the way scientists assess global carbon fluxes.
Ammonites are an group of marine animals of the subclass Ammonoidea in the class Cephalopoda. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geologic time periods.mmonites are an group of marine animals of the subclass Ammonoidea in the class Cephalopoda. They are excellent index fossils, and it is often possible to link the rock layer in which they are found to specific geologic time periods.
Magnetite is a black mineral form of iron oxide that crystallizes in the cubic or isometric system, namely all crystals which have their crystallographic axes of equal length at 90 degrees to each other. It is a mixed Iron (II) Iron (III) oxide, Fe3O4, and is one of the major ores of iron that is strongly magnetic.