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pro vyhledávání: '"Richard F. Sanford"'
Autor:
Richard F. Sanford
Publikováno v:
Economic Geology. 89:341-360
Tabular sandstone uranium deposits constitute the largest uranium resource type in the United States. A major point of contention has been the nature and direction of the ground-water flow. This paper presents a quantitative simulation of regional gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb8187e396ce9a18a34e554fbeee3d4a
https://doi.org/10.2113/gsecongeo.89.2.341
https://doi.org/10.2113/gsecongeo.89.2.341
Publikováno v:
Mathematical Geology. 25:59-80
Geochemical data are commonly censored, that is, concentrations for some samples are reported as “less than” or “greater than” some value. Censored data hampers statistical analysis because certain computational techniques used in statistical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d11f3d5a78bcaa6ca3b9d9151de72375
https://doi.org/10.1007/bf00890676
https://doi.org/10.1007/bf00890676
Autor:
Richard F. Sanford
Publikováno v:
Economic Geology. 87:2041-2055
Tabular-type uranium deposits occur as tabular, originally subhorizontal bodies entirely within reduced fluvial sandstones of Late Silurian age or younger. This paper proposes that belts of tabular-type uranium deposits formed in areas of mixed local
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::639ba731407acd933f3a9879d360fd47
https://doi.org/10.2113/gsecongeo.87.8.2041
https://doi.org/10.2113/gsecongeo.87.8.2041
Autor:
Richard F. Sanford
Publikováno v:
Geological Society of America Bulletin. 104:1236-1245
The Uncompahgre caldera, and the Lake City caldera nested within it, each have fossil hydrothermal systems and associated mineral deposits that formed during multiple episodes of mineralization during Oligocene and Miocene time. New lead isotopic ana
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70aa27b6d9ac4982f93d60c0edf1b6eb
https://doi.org/10.1130/0016-7606(1992)104<1236:licapo>2.3.co
https://doi.org/10.1130/0016-7606(1992)104<1236:licapo>2.3.co
Autor:
Richard F. Sanford
Publikováno v:
Geology. 18:1099
Hydrogeologic modeling shows that tabular-type uranium deposits in the grants uranium region of the San Juan basin, New Mexico, formed in zones of ascending and discharging regional ground-water flow. The association of either lacustrine mudstone or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8afe6c7371c98088be7a645718d5d9d
https://doi.org/10.1130/0091-7613(1990)018<1099:hoaaac>2.3.co
https://doi.org/10.1130/0091-7613(1990)018<1099:hoaaac>2.3.co
Autor:
Richard F. Sanford
Publikováno v:
Computers & Geosciences. 8:235-263
Geological examples of binary diffusion are numerous. They are potential indicators of the duration and rates of geological processes. Analytical solutions to the diffusion equations generally do not allow for variable diffusion coefficients, changin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89befeaf6485db546e08e2aab5a95a7f
https://doi.org/10.1016/0098-3004(82)90001-2
https://doi.org/10.1016/0098-3004(82)90001-2
Autor:
Richard F. Sanford
Publikováno v:
American Journal of Science. 282:543-616
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eeaae82150d71989a9c7829374ed729
https://doi.org/10.2475/ajs.282.5.543
https://doi.org/10.2475/ajs.282.5.543
The Redcloud Peak and Handies Peak Wilderness Study Areas are located 2-12 mi southwest of Lake City, CO. Much of the study areas has high mineral resource potential for precious and base metals in various ore deposit types. The rest of the study are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f5fec5661a1af491546e09eb38d034d
https://doi.org/10.3133/b1715b
https://doi.org/10.3133/b1715b
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c83dda825dd29ede1096c4b054922d91
https://doi.org/10.3133/ofr86629
https://doi.org/10.3133/ofr86629
The Little Wood River Wilderness Study Area is in south-central Idaho 12 mi west-northwest of Hailey. This study area consists of Paleozoic sedimentary rocks overlain by Tertiary volcanic rocks. The parts of this study area that are underlain by Pale
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eea4305a59ce4a895674fe902d2b169f
https://doi.org/10.3133/b1721d
https://doi.org/10.3133/b1721d