Zobrazeno 1 - 8
of 8
pro vyhledávání: '"G. A. Izett"'
Publikováno v:
Geological Society of America Bulletin. 110:361-376
A set of 34 laser total-fusion 40 Ar/ 39 Ar analyses of sanidine from a melt layer in crater-fill deposits of the Manson impact structure in Iowa has a weighted-mean age of 74.1 ± 0.1 Ma. This age is about 9.0 m.y. older than 40 Ar/ 39 Ar ages of sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa51022087f0dc2f8406fa0532c27e3
https://doi.org/10.1130/0016-7606(1998)110<0361:aaaotm>2.3.co
https://doi.org/10.1130/0016-7606(1998)110<0361:aaaotm>2.3.co
Autor:
Arthur N. Thorpe, Billy P. Glass, Joel D. Blum, G. A. Izett, H. Povenmire, R.L. Strange, Christian Koeberl, B.J. Evans, Frank E. Senftle
Publikováno v:
Geochimica et Cosmochimica Acta. 59:4071-4082
A large (130 g), layered tektite was found just south of Riddleville, Georgia, USA, in July 1993. The specimen has a bulk composition similar to that of splash-form Georgia tektites, but with a much wider range in composition (e.g., the silica conten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7380141a2253a9e7185379426a331096
https://doi.org/10.1016/0016-7037(95)00290-g
https://doi.org/10.1016/0016-7037(95)00290-g
Autor:
G. A. Izett, Wayne R. Premo
Publikováno v:
Meteoritics. 27:413-423
An isotopic study was carried out to characterize the type of black tektites from the Cretaceous-Tertiary (K-T) boundary on Haiti (the first reasonably well-preserved impact-derived material recovered from the K-T boundary), in order to help characte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::807e4ff4e47efe389fb8d4b1e2769b14
https://doi.org/10.1111/j.1945-5100.1992.tb00223.x
https://doi.org/10.1111/j.1945-5100.1992.tb00223.x
Autor:
Inna G. Talmy, J.J. Mazer, Haraldur Sigurdsson, Alisa Barkatt, Jing C. Sang, Frank E. Senftle, G. A. Izett, M.K. Norr, Arthur N. Thorpe
Publikováno v:
Geochimica et Cosmochimica Acta. 58:2889-2891
The scalloped surface feature on Cretaceous-Tertiary boundary glass is often explained as being due to terrestrial aqueous leaching. Leaching of man-made glass results in a reduction in density of the glass. Also, Fe, because of its relative insolubi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::935e6a285def8d4143512f1c5011f460
https://doi.org/10.1016/0016-7037(94)90122-8
https://doi.org/10.1016/0016-7037(94)90122-8
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73c9b94fd2dd55ad9475c23e1c08e83b
https://doi.org/10.3133/ofr97523
https://doi.org/10.3133/ofr97523
Autor:
Aaron Barkatt, L. May, M. A. Adel-Hadadi, F. R. Maurrasse, Arthur N. Thorpe, Frank E. Senftle, G. S. Marbury, G. A. Izett
Publikováno v:
Journal of Geophysical Research. 99:10881
The magnetic properties of black Beloc glass have been measured. The Curie constant, the magnetization, and the magnetic susceptibility of the Beloc glass fall within the known ranges observed for tektites. However, the temperature-independent compon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10faec8a63343e76da541303dcbf0e5b
https://doi.org/10.1029/94je00638
https://doi.org/10.1029/94je00638
Autor:
G. A. Izett
Publikováno v:
Journal of Geophysical Research. 96:20879
Relic tektites are associated with a Pt-group metal abundance anomaly and shocked minerals in a thin marl bed that marks the K-T boundary on Haiti. The presence of these three impact-produced materials at the precise K-T boundary enormously strengthe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7d4e7fb6c5e5217e6eef0a6fb80bfc3
https://doi.org/10.1029/91je02249
https://doi.org/10.1029/91je02249
Autor:
E. A. Merewether, G. A. Izett
Publikováno v:
AAPG Bulletin. 58
Upper Cretaceous strata of marine origin, which are commonly called the Frontier and Niobrara Formations in southeastern Wyoming and the main body of the Benton Shale and the Niobrara Formation in north-central Colorado, enclose two widespread discon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a050484084aef5cc3caa068b8c79e7d8
https://doi.org/10.1306/83d91592-16c7-11d7-8645000102c1865d
https://doi.org/10.1306/83d91592-16c7-11d7-8645000102c1865d