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Research paper : The advanced geological researches and fundamental national land information (M. Saito)−25−Synthesiology - English edition Vol.3 No.1 (2010) may be provided to the client as another special geological map created from the GMJ for a specific purpose or a seamless geological map created from the GMJ. Because the GMJ can be used either directly or indirectly through a derivative map, I cannot draw a clear line between Type 1 and Type 2 research, but I do say that it satisfies some of the criteria for both Type 1 and Type 2 research. The GMJ Tomochi 1:50,000 sheet is Type 1 Basic Research in the minds of we who created it, but we did draw this geological map with accurate lithofacies distributions to be useful directly.2) The several procedures applied to guarantee the reliability of the GMJ are described in the text. One of these is a multistep GSJ internal peer review system. The GMJ is published by GSJ, AIST, and is checked more thoroughly before publication than academic research papers. These checks include an internal review by geoscience specialists, by the manager of the GMJ team, and by the GSJ publication department. In fact, some completed maps have failed to pass successfully through internal checks and have never been published. After publication, we actively seek further evaluation of GMJ products by academic societies. The Tomochi sheet was reviewed in an article of the News of the Geological Society of Japan. Uniform notations are used in the geological maps according to Japanese Industrial Standards regulations. Because the GMJ is a product of research, it is undeniable that its quality depends on the ability of authors. However, authorship is annotated on the published GMJ; a specialist can recognize the authors and know their areas of specialization and their research skills. The display of authors’ names is the driving force that an author keeps and improves accuracy.I think the measures described above provide an appropriate guarantee of the validity of interpretation of the data and the accuracy of the published GMJ products.

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