Abstract
1 to 2 grams of core-sampled deep-sea deposit is leached with a hot hydrochloric acid solution for one hour and thorium is separated by using exchange resin. A small amount of solution containing thorium is evaporated to dryness on a platinum disc with which a rays from 230Th and 232Th are measured with a ray spectrometer. From the ratio of a ray of 230Th (Io) and 232Th, the rate of deposition is estimated. For a sample collected at 34°25'N, 142°17'E from the depth of 7, 400 m, the rate of deposition of 6 mm/103 y is obtained.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
