手法を比較

	坑井测井分析	地球年代測定法
分野	地球科学	地球科学
系統	Process / pipeline	Process / pipeline
提唱年	1940s	1902
提唱者	Guyod and Barnhart	Ernest Rutherford and Frederick Soddy
種類	subsurface characterization pipeline	temporal constraint pipeline
原典	Asquith, G. B., & Gibson, C. R. (2004). Basic Well Log Analysis (2nd ed.). American Association of Petroleum Geologists.	Dickin, A. P. (2005). Radiogenic Isotope Geology (2nd ed.). Cambridge University Press.
別名	wireline logging, borehole logging, petrophysical analysis	radiometric dating, isotopic dating, age determination
関連	5	3
概要	Well log analysis is the systematic examination of measurements recorded by instruments lowered into a borehole to characterize subsurface lithology, fluid content, and petrophysical properties. Originating in the 1940s, this method has become indispensable for petroleum exploration, groundwater assessment, and engineering geology. Well logs provide direct depth-correlated data that anchor interpretation of seismic surveys and constrain reservoir models.	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.