Science. 1970 May 22;168(3934):973-5. doi: 10.1126/science.168.3934.973.
Waters unusually rich in ammonia, boron, carbon dioxide, hydrogen sulfide, and hydrocarbons are found in more than 100 localities along the Pacific coast of the United States. The waters are believed to be products of low-grade metamorphism of marine sediments. The marine sedimentary rocks would have to be tectonically emplaced below crystalline rocks in many places. Mercury ore deposits are probably also products of the low-grade metamorphism.
在美国太平洋沿岸的 100 多个地方都发现了富含氨、硼、二氧化碳、硫化氢和碳氢化合物的水。这些水被认为是海洋沉积物低级变质作用的产物。在许多地方，海洋沉积岩必须在地壳构造作用下被推挤到结晶岩石之下。汞矿床也可能是低级变质作用的产物。
