@article{oai:nagoya.repo.nii.ac.jp:00019776, author = {中村, 俊夫 and NAKAMURA, Toshio}, journal = {名古屋大学加速器質量分析計業績報告書}, month = {Mar}, note = {We have organized the 26th symposium on age measurements with AMS (accelerator mass spectrometry) and EPMA (electron probe micro analyzer) systems, as well as their applications to geological and archeological samples, on January 28th-29th, 2014, at Nagoya University. Symposium of this kind is held every year generally as an opportunity for users' meeting to publicize their results in utilizing the age-measurement facilities of the Center for Chronological Research (CCR), Nagoya University. In the symposium, the status reports of the AMS and EPMA systems were delivered firstly. Then, three reports were presented as the results of the program of the innovation of new technology and research for young scientists. Four special lectures were presented at the symposium: the first talk was entitled "A survey aimed for preservation of El-Zayyan Temple site in Kharga Oasis, Western Desert of Egypt", given by Mr. Toshio Tukamoto of Gangoji Institute for Cultural Properties, about an environmental and cultural investigation of flourishing days of Kharga Oasis in the Roman period. Refinements of buildings at El-Zayyan Temple have been performed several times in the past days. In order to trace the refinements in the past, he surveyed the area around the Temple by three-dimensional digital measurements, the area of the half broken buildings and geographical mapping of the surrounding areas. The Kharga Oasis had been a farm belt and produced a plenty of wine in Roman period. It is interesting to study how environmental change has occurred from the flourishing Roan period to the present-day dry weather of poor vegetation. He is continuing investigation of the present weather condition by using modern compact thermometers and humidity sensors. He has presented us a lot of experience during the survey. The second was a talk given by Mr. Iwao Nishida of the Saga-City board of Education, entitled "Environment and culture at early Jomon period -the real situation of Jomon culture revealed from the complete investigations of Higashimyo archeological site". He first described the natural history of the site, staring from around 8000 cal BP and ending at around 7800 cal BP, lasting for about 200 years, in the period just before maximum sea level. During the excavations of shell middens, a lot of remains of shell, plants, nuts, bones were detected. Also, many man-made tools, such as basket, oar, pottery, stone tools, wooden comb, etc., were excavated. He showed us how the life of Jamon people were rich in their daily lives as old as 8000 years ago. The third was a talk about the geology of Antarctica given by Professor Tomokazu Hokada of National Institute of Polar Research. So far, he has measured ages of a lot of rocks and minerals from Antarctica, by using a high-resolution mass spectrometer called SHRIMP, and established a detailed chronology of Antarctic rocks. He explained us chronological frameworks of Antarctic continent based on his chronological investigations. The fourth was a keynote lecture of the special session concerning chronological study of ancient documents based on 14C dating, given by the president of Aichi Bunkyo University. He is a top-level researcher on ancient documents and he sometimes encounters the case of the real or fake decision of ancient documents. Some researchers do not rely on 14C dating at all, but the President Masuda considers it necessary to do collaboration between relevant techniques of natural and social sciences, in particular, AMS 14C dating as a natural science. He reviewed his more than 20 years experience of collaboration with natural science in the study of ancient documents. Totally 34 oral reports and 8 poster reports were presented as contribution papers concerning the results on applications of the AMS as well as EPMA systems of the CCR. The fields of application are: study on solar activity based on 14C concentrations of tree rings; environmental applications of 14C tracer; 14C dating analysis of stalactite from a limestone cave near Lake Hamana in Shizuoka prefecture; geological applications of 14C dating; 14C dating application to cultural properties and archeological samples; studies on 14C calibration with Japanese wood; technical developments of sample preparation for 14C measurements; measurements of U-Th-Pb ages for monazite from geological rock samples; technical study on CHIME dating for sub-micron sized samples. Finally, it should be noted that general participants who are not specialist of age measurements also joined the discussion and hopefully enjoyed it.}, pages = {3--12}, title = {平成25(2013)年度第26回年測センターシンポジウム開催の趣旨および経過}, volume = {25}, year = {2014} }