Zreda M, Noller JS
M. Zreda, Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ 85721, USA. J. S. Noller, Department of Geology, Vanderbilt University, Nashville, TN 37235, USA.
Science. 1998 Nov 6;282(5391):1097-9. doi: 10.1126/science.282.5391.1097.
Cosmogenic chlorine-36 reveals dates of the multiple prehistoric earthquakes that have produced a scarp on the Hebgen Lake fault. Apparent chlorine-36 ages are stratigraphically correct, follow a predicted theoretical pattern, and produce geologically reasonable model ages of 24, 20, 7.0, 2.6, 1.7, and 0.4 thousand years ago. This result demonstrates the feasibility of using cosmogenic chlorine-36 to extract paleoearthquake records from bedrock fault scarps.
宇宙成因氯-36揭示了多次史前地震的发生时间，这些地震在赫布根湖断层上形成了一道断崖。明显的氯-36年龄在地层学上是正确的，遵循预测的理论模式，并得出了地质上合理的模型年龄，分别为24000年、20000年、7000年、2600年、1700年和400年。这一结果证明了利用宇宙成因氯-36从基岩断层断崖中提取古地震记录的可行性。
