@article{oai:nagoya.repo.nii.ac.jp:02002919,
 author = {田中, 剛 and Tanaka, Tsuyoshi},
 journal = {名古屋大学年代測定研究, The Nagoya University bulletin of chronological research},
 month = {Mar},
 note = {Planetary groove marks are found on asteroid Ryugu. These marks indicate the latest event on the asteroid. The clear mark must be formed later than faint giant craters. The groove marks are common in terrestrial sedimentary formation. The terrestrial groove mark is considered to be formed under a rapid water stream. However, there is neither water nor stream on the asteroid. The groove marks are considered to have been formed by travelling big boulder on the surface of asteroid with weak gravity. Image processing by computer will make clearer the further details of surface tectonics on the asteroid.},
 pages = {1--6},
 title = {小惑星リュウグウのテクトニクス最若年代を示すグルーブマーク},
 volume = {6},
 year = {2022}
}