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| 地球年代測定法× | 古地磁気分析× | |
|---|---|---|
| 分野 | 地球科学 | 地球科学 |
| 系統 | Process / pipeline | Process / pipeline |
| 提唱年≠ | 1902 | 1906 |
| 提唱者≠ | Ernest Rutherford and Frederick Soddy | Bernard Brunhes and Motonori Matuyama |
| 種類 | temporal constraint pipeline | temporal constraint pipeline |
| 原典≠ | Dickin, A. P. (2005). Radiogenic Isotope Geology (2nd ed.). Cambridge University Press. DOI ↗ | Butler, R. F. (1992). Paleomagnetism: Magnetic Domains to Geologic Terranes. Blackwell Scientific Publications. link ↗ |
| 別名 | radiometric dating, isotopic dating, age determination | paleomagnetic dating, magnetostratigraphy, paleomagnetic remanence |
| 関連 | 3 | 3 |
| 概要≠ | Geochronological dating is the determination of absolute ages of rocks and minerals using the decay of radioactive isotopes. Pioneered by Rutherford and Soddy (1902), this method provides numerical anchors for geological timescales and enables quantitative understanding of geological processes. Modern techniques (K-Ar, Rb-Sr, U-Pb, 40Ar/39Ar) span from recent to ancient events and are essential for calibrating relative chronologies and assessing rates of geological change. | Paleomagnetism analysis is the study of ancient magnetic properties of rocks, measuring fossil magnetization to determine paleomagnetic field history and assign geological ages. Pioneered by Brunhes (1906) and systematized by Tauxe (2010), this method reveals geomagnetic reversals, polar wander paths, and paleomagnetic chronology independent of fossil biostratigraphy. Analysis integrates laboratory rock magnetism with field sampling to build high-resolution timescales and constrain plate motion. |
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