A geological study on stone anchors found in the western coast offshore of california

摘要

The original material of stone anchors in the western coast offshore of California was studied by petrologic and palaeontological methods and its filling time were inferred by radiocarbon dating. Two fundamental conclusions were drawn: (1) the original material of stone anchors was not from the American continent itself but from around the circum-Pacific Neo-Alps fold belts, including Japan, Taiwan, Malaysia, Indonesia, western Asian, and Mediterranean coast, and (2) its sea-falling time must Be 1430 years ago from 1950 on, i.e., before 520 A.D.. Combined with archaeological studying, it is Very possible for other people to come to the American continent before Columb arrived there.