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美国黄石公园是落基山脉最活动的地震区之一,存在强烈的火山活动和构造运动,学者们对此有过许多论述。美国《科学》杂志1979年12月第206卷4423期刊载了美国地质调查局地震研究室的佩尔顿(J.R.Pelton)和犹他州立大学地质和地球物理系的史密斯(R.B.Smith)合写的《黄石公园近代地壳上升》一文,从地壳形变出发对黄石近代地壳上升进行了机理上的讨论。原“摘要”写道:“比较1923年与1973、1976和1977年的精密水准测量,显示出已有60万年历史的黄石火山喷口相对其周围地区正在上升。1923年以来最大的相对升高量超过700毫米——每年约垂直升高14毫米。这种快速和不平常的大面积地面形变很可能是由于熔化或部分熔化物质最近流入黄石公园下面地壳内某一位置所致。”摘译如下:
Yellowstone National Park is one of the most active seismic areas in the Rocky Mountains. There are intense volcanic activities and tectonic movements. Many scholars have discussed this. American Society for Geological Survey JRPelton, Earthquake Research Laboratory, and RBSmith, Utah State University Department of Geology and Geophysics, Huangshi Park, the rise of the modern crust, “a text, starting from the crustal deformation of the Yellowstone modern crustal rise of a mechanistic discussion. The original ”Summary“ reads: ”Comparing the precision leveling measurements of 1923 with those of 1973, 1976, and 1977 shows that the Yellowstone volcanic vents, which have been built for more than 600,000 years, are rising relative to their surroundings. The largest relative increase since 1923 Above 700 mm - about 14 mm above normal each year, this rapid and unusual large surface deformation is most likely due to a recent inflow of molten or partially melted material to a location within the crust beneath Yellowstone. "Extract as follows: