NASA Earthdata CMRcollection
Transformation Processes of Microbial Barite to Sediments AntarcticaMicrobial mats taken from the Lake Vanda and Onyx at Victotia Land, Antarctica,showed the presence of nanometer sized barite crystals with alga. Algal biomineralization might widely occur even in low temperature environment.
NASA Earthdata CMRcollection
An initial formation of fresh water manganese nodules through the microorganisms participationThe field environmental geological exploration in Matsue City and Kanazawa City, as well as, the water quality investigation of river water at 200 sites have been carried out.From a cultivation experiment of microorganisms obtained, it was made clear that an enrichment of manganese and iron occurs in a short time such as several days through a participation of these microorganisms, and the structu
NASA Earthdata CMRcollection
Characteristics of Acid Precipitation in Kanazawa CityThe concentration of nitrogen dioxide in atmosphere at 200-300 sites in Kanazawa City was measured. At the same time the rain, snow, hail and dust in atmosphere were sampled and concurrently were observed and analyzed by using an X-ray powder diffractometer, scanning electron microscope-energy dispersion diffractometer, and transmission type electron microscope. In general, the concentration of ni
NASA Earthdata CMRcollection
Microorganisms of Hydrothermal Vents at Iheya RidgeDive #857 by Shinkai 2000 was carried out at Iheya Ridge of Okinawa Trough in April 1996 to collect deep sea sediments and rocks. Some rocks collected near hydrothemal vents were covered by white microbial mats. Detailed studies by analytical devices showed that the white microbial mats consisted of a lot of needle-like quartz crystals and spherical materials. The spherical materials existed aroun
NASA Earthdata CMRcollection
Electron Microscopic Observation of Biomineralization in Biomats from Hot SpringsSince June 29 through July 5, 1992, an exploration of geysers in Iceland has been conducted. Temperature and pH of the geyser were 12-90 degrees C, and 6-9 respectively. In addition, the biomats were sampled from 7 sites of 6 regions, and their microform, mineral composition, and chemical constituents were examined.