02716nam 2200553Ia 450 991078962640332120230421053534.01-58729-267-X(CKB)2670000000079019(EBL)837047(OCoLC)712059605(SSID)ssj0000470473(PQKBManifestationID)11300824(PQKBTitleCode)TC0000470473(PQKBWorkID)10412054(PQKB)10309954(MiAaPQ)EBC837047(MdBmJHUP)muse2960(Au-PeEL)EBL837047(CaPaEBR)ebr10447299(EXLCZ)99267000000007901920000324d1998 uy 0engur|n|---|||||txtccrIowa's geological past[electronic resource] three billion years of earth history /Wayne I. AndersonIowa City University of Iowa Pressc19981 online resource (440 p.)A bur oak originalDescription based upon print version of record.0-87745-639-9 0-87745-640-2 Includes bibliographical references (p. [385]-414) and index.Contents; Preface; 1. The Geologic Setting of Iowa; 2. Precambrian: The Oldest Rocks; 3. Cambrian: Sandy Marine Shelves and Shorelines; 4. Ordovician: Warm, Shallow Seas; 5. Silurian: Dolomite and Carbonate Mounds; 6. Devonian: A Variety of Marine Deposits; 7. Mississippian: Last of the Widespread Carbonate Seas; 8. Pennsylvanian: Coastal Swamps and Shallow Seas; 9. Mesozoic: Evaporite Deposits and the Last of the Inland Seas; 10. Cenozoic: Erosion Climaxed by the Great Ice Age; 11. Geology and Humankind; References; IndexIowa's rock record is the product of more than three billion years of geological processes. The state endured multiple episodes of continental glaciation during the Pleistocene Ice Age, and the last glacier retreated from Iowa a mere (geologically speaking) twelve thousand years ago. Prior to that, dozens of seas came and went, leaving behind limestone beds with rich fossil records. Lush coal swamps, salty lagoons, briny basins, enormous alluvial plains, ancient rifts, and rugged Precambrian mountain belts all left their mark. In Iowa's Geological Past, Wayne Anderson giBur oak original.GeologyIowaGeology557.77Anderson Wayne I.1935-1550244MiAaPQMiAaPQMiAaPQBOOK9910789626403321Iowa's geological past3808898UNINA