Proceedings Volume: "Uranium in New Mexico: the Resource and the Legacy", New Mexico Geological Society, 2017 Annual Spring Meeting最新文献

{"title":"Forsterite and Pyrrhotite Dissolution Rates from Kinetic Testing using Mine Tailings: Results from Geochemical Modelling","authors":"Rodrigo Frayna Embile, Jr., I. Walder","doi":"10.56577/sm-2017.516","DOIUrl":"https://doi.org/10.56577/sm-2017.516","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128539208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Late Miocene- Early Pliocene Unconformity in the Rio Grande Rift","authors":"J. V. van Wijk, G. Axen, D. Koning, D. Coblentz","doi":"10.56577/sm-2017.519","DOIUrl":"https://doi.org/10.56577/sm-2017.519","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130258379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Provenance Trends From Upper Cretaceous Nonmarine Strata in Southern New Mexico: Implications for Drainage Evolution and Sediment Dispersal Along the Southwestern Margin of the Western Interior Seaway","authors":"B. Hampton, G. Mack, C. Stopka","doi":"10.56577/sm-2017.550","DOIUrl":"https://doi.org/10.56577/sm-2017.550","url":null,"abstract":"Upper Cretaceous nonmarine strata in southern New Mexico mark the final phase of Late Cretaceous (Cenomanian–Campanian) sedimentation associated with the Sevier orogeny. Presented here are U-Pb detrital zircon ages, sandstone modal composition, and paleocurrent measurements from the Dakota Sandstone, Tres Hermanos Formation, and Crevasse Canyon Formation (Lower Member and Ash Canyon Member). The Dakota Sandstone is dominated by monocrystalline quartz (84%) with minor volcanic and metamorphic lithic grains (15%) with rare occurrences of feldspar (1%). Paleoflow measurements show east-directed (108°) to northeast-directed flow (50°). Detrital zircon age peaks occur at 1732, 1651, 1416, 1050, 626, 412, 230, and 103 Ma. The calculated rage of maximum depositional ages (MDAs) for the Dakota Sandstone is 103–104 Ma. The Tres Hermanos Formation is composed primarily of monocrystalline quartz (63%) with volcanic and metamorphic lithic grains (27%) and minor feldspar (10%). Paleoflow measurements reflect east-directed (93–109°) and southeast-directed (166°) flow. Peak detrital zircon ages occur at 1709, 1420, 1085, 169, and 94 Ma. MDAs for the Tres Hermanos range from 93–96 Ma. The Lower Member of the Crevasse Canyon Formation is composed of monocrystalline quartz (50%) along with volcanic and metamorphic lithic grains (41%) and minor abundance of feldspar (9%). Paleoflow measurements show primarily east-directed flow (100°). Detrital zircon age peaks occur at 1702, 1420, 1067, 167, and 91 Ma. MDAs for the Lower Member of the range from 91–92 Ma. The Ash Canyon Member of the Crevasse Canyon Formation is composed of monocrystalline quartz (48%) with volcanic and metamorphic lithic grains (46%) and minor occurrences of feldspar (6%). Paleoflow trends show a east- to southeast-directed flow (108–118°). Peak detrital zircon ages were determined to be 1682, 1415, 1108, 169 and 90 Ma. MDAs for the Ash Canyon Member range from 80–91 Ma. Precambrian to Paleozoic zircons overlap in age with the Yavapai, Mazatzal, Granite-Rhyolite, and Grenville provinces (and age-equivalent ~1.0 Ga rocks). Neoproterozoic, Early Paleozoic, and some Mesoproterozoic-age detritus was originally derived from Appalachian-Ouachita sources and transported to parts of the southwestern U.S. (e.g., Mesozoic eolianites of the Colorado plateau). Second-order recycling of Mesozoic eolianites has been reported from Lower Cretaceous strata of the Bisbee Rift which exhibit U-Pb detrital zircon spectra that very similar to Mesozoic strata of the Four Corners region. Permo–Triassic age detritus overlap in age with granitoid rocks of the Cordilleran magmatic arc that outcrop in California and Arizona. Jurassic to Cretaceous age zircons overlap with the mid-Mesozoic Cordilleran magmatic arc and the Sierra Nevada batholith. Based on the provenance trends summarized above, a sediment dispersal model is favored where the Dakota Sandstone was derived largely from recycled Lower Cretaceous strata of the Bi","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116336529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"40Ar/39Ar Geochronology of Magmatism and Alteration in the Gallinas Mountains With Implications for Rare Earth Mineralization","authors":"Alan D Robison, W. McIntosh, V. W. Lueth","doi":"10.56577/sm-2017.540","DOIUrl":"https://doi.org/10.56577/sm-2017.540","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121602430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Relationship Between Tree Canopy Cover and Discharge of Upper Gallinas Watershed, New Mexico, 1939 – 2015","authors":"Behnaz Yekkeh","doi":"10.56577/sm-2017.521","DOIUrl":"https://doi.org/10.56577/sm-2017.521","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124191118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental Aqueous Geochemistry of Uranium in Aquifer Systems, Pajarito Plateau, New Mexico","authors":"P. Longmire, K. Granzow, S. Yanicak, D. Fellenz, M. Dale, Megan Green, Antonio Trujillo","doi":"10.56577/sm-2017.507","DOIUrl":"https://doi.org/10.56577/sm-2017.507","url":null,"abstract":"Operated by the Los Alamos National Security, LLC for the DOE/NNSA Abstract Los Alamos National Laboratory (LANL) has conducted multidisciplinary research on uranium since the mid-1940s. Treated and non-treated industrial aqueous discharges, mainly containing isotopically natural uranium with a 238U/235U atom ratio = 137.8813, have been discharged to Acid, Pueblo, Los Alamos, and Mortandad Canyons. These discharges provide recharge to shallow alluvial and perched-intermediate depth groundwater and the regional aquifer at typical depths of <24 meters (m), 183 m, and 296 m, respectively. Background water chemistry in the regional aquifer varies from an oxidizing (median Eh = 332 mV), calcium-sodium-bicarbonate to a sodium-calcium-bicarbonate composition. Small amounts of enriched uranium, containing a 238U/235U atom ratio <137.8813, have been locally measured in alluvial groundwater within Mortandad Canyon. The Environmental Protection Agency drinking water standard for total uranium and the New Mexico Water Quality Control Commission standard for dissolved uranium is 0.126 μM (0.030 mg/L). Upper tolerance limits have been calculated by the New Mexico Environment Department and LANL for numerous solutes naturally present in the regional aquifer. These include total dissolved uranium (5.336 nM, 0.00127 mg/L), dissolved oxygen (0.253 mM, 8.10 mg/L), nitrate(N) (0.056 mM, 0.78 mg/L), chloride (0.084 mM, 2.98 mg/L), perchlorate (4.324 nM, 0.00043 mg/L), and sulfate (0.061 mM, 5.84 mg/L). Background concentrations of dissolved uranium in the regional aquifer increase with average groundwater age, especially east of the Rio Grande. Concentrations of dissolved uranium(VI) elevated above background, with a maximum value of 0.0504 μM (0.012 mg/L), have been detected in several regional aquifer monitoring wells installed in Pueblo, Los Alamos, and Mortandad Canyons. Concentrations of nitrate, perchlorate, and/or tritium coreleased with aqueous uranium(VI) species are elevated above background in the regional aquifer at several monitoring wells. Thermochemical calculations suggest that uranyl carbonate-carbonato complexes, including UO2CO3 0, UO2(CO3)2 2-, Ca(UO2)2(CO3)3 0, and UO2(CO3)3 4-, dominate in the regional aquifer. These uranyl complexes are mobile under oxidizing and circumneutral pH conditions characteristic of the regional aquifer at Los Alamos. Concentrations of natural reductants, including dissolved hydrogen sulfide, dissolved ferrous iron, dissolved organic carbon, and solid organic matter are not sufficient to enhance reduction of uranium(VI) to uranium(IV) aqueous complexes (UOH3+ and U(OH)4 0). The regional aquifer is undersaturated with respect to amorphous UO2, uraninite, and coffinite. Background concentrations of dissolved uranium(VI) in upper sections of the regional aquifer are initially controlled by partial dissolution of soluble volcanic glass followed by specific adsorption of uranium(VI) complexes onto hydrous ferric oxide and c","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130646467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Paleoproterozoic Mazatzal Province of Southern New Mexico: Insight from Detailed Field Mapping and Isotope Geochemistry","authors":"C. Howland, J. Amato","doi":"10.56577/sm-2017.510","DOIUrl":"https://doi.org/10.56577/sm-2017.510","url":null,"abstract":"Analysis of Paleoproterozoic rocks exposed in southern New Mexico can provide key insight into the formation of the Mazatzal province and the assembly of southwestern Laurentia, including the type of crust involved, the timing of accretion, and the history of deformation. The San Andres Mountains in southern New Mexico contain Paleoproterozoic rocks that were exposed by a west-tilted normal fault block that is the result of Rio Grande Rifting. In the vicinity of Salinas Peak, previous mapping at 1:62,500 scale combined most of the Proterozoic rocks into one unit (Scholle, 2003). More detailed mapping at 1:6000 scale has revealed that this unit contains many different types of rocks including amphibolite, schist, gneiss, and several granites. The amphibolite unit is typically boudinaged and is interlayered with the schist. Schists typically strikes S45E and has a dip of 45° SW. The gneissic unit is highly deformed and shear sense data are being collected. A gray fine-grained granite contains 1-2 mm garnets and cuts the schist, amphibolite and gneissic units. A pink coarse-grained granite is less deformed, contains large potassium feldspar grains (1 to 10 cm), and cuts the gray granite. A pink granite dike cuts the schist and amphibolite units and is folded with an axial surface parallel to the foliation in the schist. Thus, field observations of the rocks around Salinas peak in the northern San Andres Mountains indicate a complex history of magnetism, deposition and deformation. We obtained whole-rock Nd isotope data from five 1.67–1.63 Ga felsic igneous rocks in the San Andres Mountains, Kingston District, Caballo Mountains, and Kingston District. They all had eNd ranging from -1.8 to +1.2. These values are close to Bulk Earth and indicate little contamination with or derivation from older crust, consistent with juvenile magmatism. Previous geochronology (Ottenfeld, 2015) indicated U-Pb zircon ages from 1684–1624 Ma throughout the southern Mazatzal province. We acquired preliminary Hf isotope data on zircons from 16 of these samples. These analyses had eHf values ranging from 5 ± 2 to 10 ± 1, close to depleted mantle values that are in agreement with Nd whole-rock isotope data.","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"293 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131454272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geothermal Potential of the Southern San Luis Basin, Taos County, New Mexico","authors":"S. Kelley, J. Pepin","doi":"10.56577/sm-2017.513","DOIUrl":"https://doi.org/10.56577/sm-2017.513","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134439238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Uranium Resources in New Mexico in 2017","authors":"V. McLemore","doi":"10.56577/sm-2017.496","DOIUrl":"https://doi.org/10.56577/sm-2017.496","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133187660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Legacy Molybdenum Mine Tailings in the Context of the Questa Caldera: Challenges in Distinguishing Anthropogenic From Background Water Types","authors":"Kylian Nathiel Robinson","doi":"10.56577/sm-2017.542","DOIUrl":"https://doi.org/10.56577/sm-2017.542","url":null,"abstract":"","PeriodicalId":192881,"journal":{"name":"Proceedings Volume: \"Uranium in New Mexico: the Resource and the Legacy\", New Mexico Geological Society, 2017 Annual Spring Meeting","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124317575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}