手法を比較

	放射性炭素年代測定法	古地磁気学解析
分野	地球物理学	地球物理学
系統	Process / pipeline	Process / pipeline
提唱年	1949	1953
提唱者	Willard Libby	Ronald Fisher and contributors
種類	Chronometric method based on ¹⁴C decay	Analysis of remnant magnetization in rocks for chronology and tectonics
原典	Libby, W. F. (1949). Radiocarbon dating. University of Chicago Press.	Fisher, R. A. (1953). Dispersion on a sphere. Proceedings of the Royal Society of London, 217(1130), 295-305.
別名	¹⁴C dating, Carbon-14 dating	Paleomagnetism
関連	3	3
概要	Radiocarbon dating is a radiometric technique that determines the age of organic materials by measuring the radioactive decay of ¹⁴C (carbon-14), a rare isotope produced in the atmosphere by cosmic ray interactions. Developed by Willard Libby in 1949, radiocarbon dating became a foundational method in archaeology, paleoclimate studies, and geology, enabling dating of organic materials from the past ~50,000 years with typical precision of ±50–100 years.	Paleomagnetic analysis is the study of remnant magnetization in rocks and sediments to determine the direction and magnitude of the Earth's ancient magnetic field and to establish the ages and tectonic histories of crustal rocks. Formalized by Fisher (1953) and Butler (1992), paleomagnetism underpins plate tectonics plate reconstruction, magnetostratigraphic dating, and paleoclimate studies.