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Compilation of information and data on the Manson Impact Structure

Show simple item record Hartung, Jack B. Anderson, Raymond R.
dc.coverage.spatial Iowa
dc.coverage.spatial Manson Region (Iowa) 2017-09-26T15:16:52Z 2017-09-26T15:16:52Z 1988
dc.identifier.other LPI0448
dc.identifier.other (OCoLC)1033411104
dc.description.abstract A problem for the impact hypothesis for the Cretaceous-Tertiary (K-T) mass extinction is the apparent absence of an identifiable impact site. The Manson Impact Structure is a candidate because it is the largest recognized in the U.S.; it is relatively close to the largest and most abundant shocked quartz grains found at the K-T boundary; and its age is indistinguishable from that of the K-T boundary based on paleontological evidence, fission track dates, and preliminary Ar-40/Ar-39 measurements.
dc.description.statementofresponsibility by Jack B. Hartung and Raymond R. Anderson.
dc.description.tableofcontents Geology of Northwest Central Iowa -- Geology of the Manson Impact Structure -- Geophysical Studies of the Manson Impact Structure -- Ages of Samples from the Manson Impact Structure -- The Manson Impact Structure and the K-T Boundary
dc.format.mimetype application/pdf
dc.language.iso en
dc.relation.ispartofseries LPI technical report ; 88-08
dc.relation.ispartofseries NASA contractor report ; NASA CR-183169
dc.title Compilation of information and data on the Manson Impact Structure
dc.type Book
dc.type Text
dcterms.extent 32 pages
dcterms.publisher Lunar and Planetary Institute
dcterms.subject Geology--Iowa.
dcterms.subject Cryptoexplosion structures--Iowa--Manson Region.

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