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Google圖書搜尋
Lithology and Subdivisions of the Jurassic Stump Formation in Southeastern Idaho and Adjoining Areas
George Nicholas Pipiringos
Ralph Willard Imley
出版
U.S. Government Printing Office
, 1979
URL
http://books.google.com.hk/books?id=pHVFAQAACAAJ&hl=&source=gbs_api
註釋
Marked rapid lateral changes in lithology, fossil content, and thickness of the Stump Formation are due principally to erosion associated with the Cretaceous (K) and Jurassic (J-4) unconformities.
