Preliminary Study on Neogene Microtektites in the Core Collected from North Pacific

A great number of microtektites were found in core collected from North Pacific. Because abundant microtektites are restricted to a 20–30 cm thick zone of core, we called this zone is miicrotektite layer. The age of sediments concentrated microtektites is from the Pliocene to the Pleistocene epoch. Research results indicate that these microtektites are similar to the North American tektites and the Australasian tektites, but they have the unique property on the chemistry.