{"title":"3尼亚加拉瀑布是地质年代的计时器","authors":"J. W. Spencer","doi":"10.1098/rspl.1894.0091","DOIUrl":null,"url":null,"abstract":"1. Conjectures as to the Age of Niagara Falls.—Prior to the writing of the present paper, most of the conjectures as to the age of the Falls have been based simply upon the supposed uniform rate of recession. Thus, in 1790, Andrew Ellicott assigned 55,000 years as the age of the Falls.","PeriodicalId":20661,"journal":{"name":"Proceedings of the Royal Society of London","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1098/rspl.1894.0091","citationCount":"0","resultStr":"{\"title\":\"III. Niagara falls as a chronometer of geological time\",\"authors\":\"J. W. Spencer\",\"doi\":\"10.1098/rspl.1894.0091\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"1. Conjectures as to the Age of Niagara Falls.—Prior to the writing of the present paper, most of the conjectures as to the age of the Falls have been based simply upon the supposed uniform rate of recession. Thus, in 1790, Andrew Ellicott assigned 55,000 years as the age of the Falls.\",\"PeriodicalId\":20661,\"journal\":{\"name\":\"Proceedings of the Royal Society of London\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1098/rspl.1894.0091\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of the Royal Society of London\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1098/rspl.1894.0091\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Royal Society of London","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1098/rspl.1894.0091","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
III. Niagara falls as a chronometer of geological time
1. Conjectures as to the Age of Niagara Falls.—Prior to the writing of the present paper, most of the conjectures as to the age of the Falls have been based simply upon the supposed uniform rate of recession. Thus, in 1790, Andrew Ellicott assigned 55,000 years as the age of the Falls.
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