美国地质调查所在国内战争以后的岁月里,人民的西迁就需要对广阔西部地区自然状态和资源做进一步的了解。为了满足这种需要,国会授权四个调查所来承担这一任务。这些调查所分别以各所领导人的名字命名,即King、Hayden、Powell和Wheeler调查所。1879年第45届国会上,根据国家科学院的推荐,依法建立美国地质调查所,隶属内 In the days after the Civil War, the United States Geological Survey required the people to move westward to learn more about the natural state and resources of the vast western region. To meet this need, Congress authorized four investigations to undertake this task. The surveys were named after the leaders of the respective institutes, the King, Hayden, Powell and Wheeler Investigations Institute. In the 45th Congress of 1879, according to the recommendations of the National Academy of Sciences, the U.S. Geological Survey Institute was established according to law and under the jurisdiction of