Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Karen J. Wenrich"'
Publikováno v:
Applied Geochemistry. 9:431-454
Thousands of solution-collapse breccia pipes crop out in the canyons and on the plateaus of northwestern Arizona; some host high-grade uranium deposits. The mineralized pipes are enriched in Ag, As, Ba, Co, Cu, Mo, Ni, Pb, Sb, Se, V and Zn. These bre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d448db614875a57fe443cef6a2356ed1
https://doi.org/10.1016/0883-2927(94)90065-5
https://doi.org/10.1016/0883-2927(94)90065-5
Autor:
Karen J. Wenrich, Hoyt B. Sutphin
Publikováno v:
Geology Today. 10:97-104
The Redwall Limestone of the Grand Canyon forms a major mineral district, its breccia pipes being host to rich uranium and base-metal deposits. Yet karst processes as a mechanism for preparing host rocks for ore deposition have been little studied.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cc8fd541a9c2355f5b70b7ece01be48
https://doi.org/10.1111/j.1365-2451.1994.tb00880.x
https://doi.org/10.1111/j.1365-2451.1994.tb00880.x
Autor:
Karen J. Wenrich
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6aee6e9297f334da2ca0ef521ff41a9f
https://doi.org/10.3133/ofr92219
https://doi.org/10.3133/ofr92219
Autor:
Bradley S. Van Gosen, Karen J. Wenrich
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1846d7293a67220f7c0d630d71ef87ef
https://doi.org/10.3133/ofr91594a
https://doi.org/10.3133/ofr91594a
Autor:
Karen J. Wenrich
Publikováno v:
Economic Geology. 80:1722-1735
The Paleozoic sedimentary rocks on the Colorado Plateau of northern Arizona are host to hundreds ofbreccia pipes. The uranium and copper deposits in these breccia pipes transgress formation boundaries from the Mississippian Redwall Limestone to the T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b8c935be1545079a6338ced03fdef95
https://doi.org/10.2113/gsecongeo.80.6.1722
https://doi.org/10.2113/gsecongeo.80.6.1722
Autor:
Karen J. Wenrich-Verbeek
Publikováno v:
Tectonophysics. 61:103-129
The San Francisco Mountain lavas exposed in the upper portion of the southeast slope of Humphreys Peak are composed of three petrographically distinct types: (1) a lower series of hornblende pyroxene andesites; (2) a group of hypersthene dacites; and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63da415984d831e8aba10a47b671af2e
https://doi.org/10.1016/0040-1951(79)90294-4
https://doi.org/10.1016/0040-1951(79)90294-4
Autor:
Karen J. Wenrich
Publikováno v:
Applied Geochemistry. 1:469-485
Thousands of solution-collapse breccia pipe crop out in the canyons and on the plateaus of northern Arizona. Over 80 of these are known to contain U or Cu mineralized rock. The high-grade U ore associated with potentially economic concentrations of A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f03666d206a7de37958310ff46786ac7
https://doi.org/10.1016/0883-2927(86)90052-1
https://doi.org/10.1016/0883-2927(86)90052-1
Publikováno v:
Open-File Report.
This report presents the chemical analyses and statistical evaluation of 62 water samples collected in the north-central part of New Mexico near Rio Ojo Caliente. Both spring and surface-water samples were taken throughout the Rio Ojo Caliente draina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a0ad0300acf09e193617dc614539260
https://doi.org/10.3133/ofr79996
https://doi.org/10.3133/ofr79996