Zobrazeno 1 - 10
of 425
pro vyhledávání: '"George E. Gehrels"'
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 19, Iss 10, Pp 3689-3705 (2018)
Abstract Many applications specific to detrital mineral U‐Th‐Pb geochronology in the Earth sciences necessitate large numbers of age observations to be made from samples and require accurate and precise isotope measurements across wide dynamic ra
Externí odkaz:
https://doaj.org/article/f0eaed22729840609f91ec9af791b903
Publikováno v:
Geofísica Internacional, Vol 39, Iss 4, Pp 295-308 (2000)
Ochenta y cinco circones detritales provenientes de estratos sedimentarios del Mesoproterozoico y/o Neoproterozoico al Cámbrico Medio del noroeste de Sonora, México, han sido analizados para determinar los terrenos fuente y delimitar las edades de
Externí odkaz:
https://doaj.org/article/61bcb01a7d7f4d13854d37fa033f2b03
Publikováno v:
Geofísica Internacional, Vol 39, Iss 4, Pp 295-308 (2000)
Eighty-five detrital zircon grains from Mesoproterozoic and/or Neoproterozoic to Middle Cambrian sedimentary strata in northwest Sonora, Mexico, have been analyzed to determine source terranes and provide limiting depositional ages of the units. The
Externí odkaz:
https://doaj.org/article/9f2f31caa63a4748a840e80616928ff5
Autor:
Emma D.L. Kroeger, William C. McClelland, Maurice Colpron, Stephen J. Piercey, George E. Gehrels
Publikováno v:
Geosphere.
The Yukon-Tanana terrane in Yukon, Canada, records Late Devonian (ca. 366–360 Ma) rifting and the onset of latest Devonian–Carboniferous arc and back-arc magmatism (ca. 360–325 Ma) in the Northern Cordillera. Detrital zircon U-Pb and Hf isotope
Autor:
M. Robinson Cecil, Harold H. Stowell, John W. Valley, Margaret E. Rusmore, Emily Homan, Kouki Kitajima, George E. Gehrels, Glenn J. Woodsworth, Intan Yokelson
Publikováno v:
Geosphere. 17:2027-2041
The southern Coast Mountain batholith was episodically active from Jurassic to Eocene time and experienced four distinct high magmatic flux events during that period. Similar episodicity has been recognized in arcs worldwide, yet the mechanism(s) dri
Autor:
Mark E. Pecha, Michael D. Blum, George E. Gehrels, Kurt E. Sundell, Karl E. Karlstrom, David A. Gonzales, David H. Malone, J. Brian Mahoney
Publikováno v:
Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma) ISBN: 9780813725550
Paleocene Lower Wilcox Group sedimentation rates are three times the Cenozoic average for the Gulf of Mexico region and are attributed to Laramide tectonism within the Laramide–Rocky Mountains region. These increased rates likely represent the eros
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cd296958e11d97c0eb2ad7b0304a51d
https://doi.org/10.1130/2021.2555(10)
https://doi.org/10.1130/2021.2555(10)
Publikováno v:
Geostandards and Geoanalytical Research. 45:37-57
Autor:
Amy C. Moser, Bradley R. Hacker, George E. Gehrels, Gareth G. E. Seward, Andrew R. C. Kylander-Clark, Joshua M. Garber
Publikováno v:
Contributions to Mineralogy and Petrology. 177
Titanite U–Pb geochronology is a promising tool to date high-temperature tectonic processes, but the extent to and mechanisms by which recrystallization resets titanite U–Pb dates are poorly understood. This study combines titanite U–Pb dates,
Autor:
Kurt E. Sundell, Sarah W.M. George, Barbara Carrapa, George E. Gehrels, Mihai N. Ducea, Joel E. Saylor, Martin Pepper
Publikováno v:
Geophysical Research Letters. 49
Autor:
Cornelia Rasmussen, Roland Mundil, William G. Parker, George E. Gehrels, Christopher J. Lepre, John W. Geissman, Sean T. Kinney, Randall B. Irmis, Dennis V. Kent, Paul E. Olsen, Dominique Geisler
Publikováno v:
GSA Bulletin. 133:539-558
The Upper Triassic Chinle Formation is a critical non-marine archive of low-paleolatitude biotic and environmental change in southwestern North America. The well-studied and highly fossiliferous Chinle strata at Petrified Forest National Park (PFNP),