写真　

world's first!Elucidation of the origin of silica concretion containing petroleum

　
If you write the contents roughly
・ The origin of silica concretion (concentration of silica component (SiO2)) was thought to be very slow (it takes about tens of thousands of years), but it is formed very quickly, about several years. Indicated.　

-Applicable to sealing of rock voids with silica and long-term material preservation technology-February 3, 2rd year of Reiwa National University Corporation Tokai ...　→ Continue reading

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