New Mexico Geology最新文献

{"title":"Uranium deposits at the Cebolleta project, Laguna mining district, Cibola County, New Mexico","authors":"Ted Wilton","doi":"10.58799/nmg-v39n1.1","DOIUrl":"https://doi.org/10.58799/nmg-v39n1.1","url":null,"abstract":"The Cebolleta uranium project in northwestern New Mexico is the site of five sandstone-hosted uranium deposits contained within the Jackpile Sandstone Member of the Upper Jurassic Morrison Formation. The uranium mineralization, which has been well-delineated by numerous drill holes, two open-pit and three underground mines, is a series of tabular shaped bodies that were deposited within individual sandstone lenses of the Jackpile Sandstone. Uranium deposits in the project area exhibit characteristics of “trend,” “redistributed,” and “remnant” types of deposits, as described elsewhere within the Grants mineral belt. Significant uranium resources are present in the project area. Introduction The Cebolleta uranium project of Uranium Resources, Incorporated (URI), is located in the Laguna mining district of northeastern Cibola County, New Mexico (Fig. 1). Situated in northwestern New Mexico east of Mount Taylor, the project is approximately 72 km west of the city of Albuquerque and 16 km north-northeast of the Pueblo of Laguna. The Cebolleta project lies in an area of valleys and mesas along the southeastern margin of the San Juan Basin. Elevations within the project area range from approximately 1,798 to 1,983 m above sea level. The project area (Fig. 2), which hosts five significant sandstone-hosted uranium deposits, is positioned near the eastern end of the so-called Grants mineral belt, which Church Rock-Crownpoint subdistrict Smith Lake subditrict Ambrosia Lake subdistrict Nose Rock subdistrict","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71178206","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 rare and unusual pseudofossil Astropolithon from the Lower Permian Abo Formation near Socorro, New Mexico","authors":"S. Lucas, A. J. Lerner","doi":"10.58799/nmg-v39n2.40","DOIUrl":"https://doi.org/10.58799/nmg-v39n2.40","url":null,"abstract":"","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71178343","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":"Gallery of Geology: Uranium Mining in the Grants Area","authors":"V. McLemore, B. Frey","doi":"10.58799/nmg-v39n1.25","DOIUrl":"https://doi.org/10.58799/nmg-v39n1.25","url":null,"abstract":"","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71178277","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":"Tellurium resources in New Mexico","authors":"V. McLemore","doi":"10.58799/nmg-v38n1.1","DOIUrl":"https://doi.org/10.58799/nmg-v38n1.1","url":null,"abstract":"Tellurium (Te) is one of the least abundant elements in the crust and tends to form minerals associated with gold, silver, bismuth, copper, lead, and zinc sulfide deposits. There are no primary tellurium mines in the world; most tellurium production comes from the anode slimes generated in metal refining, primarily from copper porphyry deposits. Tellurium is used as an alloying agent in iron and steel, as catalysts, and in the chemical industry. However, future demand and production could increase because tellurium is progressively used in thin film cadmium-tellurium solar panels and some electronic devices. In New Mexico, anomalous amounts of tellurium are found associated with porphyry copper deposits, as well as with gold-silver vein deposits, but were not considered important exploration targets in the past. The only tellurium production from New Mexico has been from the Lone Pine deposit (Wilcox district) in the Mogollon Mountains, where approximately 5 tons of tellurium ore were produced. Gold-tellurides are found with gold, silver, pyrite, and fluorite in fracture-filling veins in rhyolite at Lone Pine, with reported assays as much as 5,000 ppm Te. Tellurium-bearing deposits also are found in the Organ Mountains, Sylvanite, Tierra Blanca, Grandview Canyon, and Hillsboro districts. Additional detailed sampling and geologic mapping are required of the New Mexico deposits to fully understand the mineralogy and economic potential of tellurium.","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177526","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 youngest silicic eruptions from the Valles Caldera and volcanic hazard potential in north-central New Mexico","authors":"G. Woldegabriel, R. Kelley, E. D. Miller, E. Schultz-Fellenz","doi":"10.58799/nmg-v38n2.50","DOIUrl":"https://doi.org/10.58799/nmg-v38n2.50","url":null,"abstract":"New Mexico Geology May 2016, Volume 38, Number 2 Sporadic mafic and felsic eruptions, representing at least five major and several smaller pulses of effusive and explosive volcanic products that range in age from 25.5 Ma to 68.3 ka, crop out within the Jemez volcanic field and the surrounding areas in north-central New Mexico (Kelley et al., 2014 and references therein). The youngest pyroclastic and lava flows erupted from the southern moat of the Valles caldera. These volcanic products belong to the El Cajete Pyroclastic Beds and co-erupted Battleship Rock Ignimbrite, which are locally overlain by the Banco Bonito obsidian flow (Gardner et al, 2010). Based on detailed field mapping, Wolff et al. (2011) suggested that more than 10 km3 of silicic magma was erupted to form the fallout and ash-flow deposits of the lower and upper units of the El Cajete Pyroclastic Beds and the Battleship Rock Ignimbrite, whereas the volume of the Banco Bonito obsidian lava flow was estimated at 4 km3. The mostly Plinian eruptions of the El Cajete Pyroclastic Beds were distributed over much of the Valles caldera, the southern Jemez Mountains, and the Rio Grande rift, including considerable ash deposited in the Santa Fe area and in eastern New Mexico (Wolff et al., 2011). As shown in Figure 1, recent field studies identified >4 m thick of proximal and ≥1 m thick of distal primary pumice deposit near the vent (A) and in the Cerros Gallery of Geology","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177761","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":"Tellurium minerals in New Mexico","authors":"V.W. Lueth","doi":"10.58799/nmg-v38n1.17","DOIUrl":"https://doi.org/10.58799/nmg-v38n1.17","url":null,"abstract":"New Mexico Geology (NMG) publishes peer-reviewed geoscience papers focusing on New Mexico and the surrounding region. We aslo welcome submissions to the Gallery of Geology","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177615","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":"Latest Miocene-earliest Pliocene evolution of the ancestral Rio Grande at the Espa�ola-San Luis Basin boundary, northern New Mexico","authors":"D. Koning, S. Aby, V. Grauch, M. Zimmerer","doi":"10.58799/nmg-v38n2.24","DOIUrl":"https://doi.org/10.58799/nmg-v38n2.24","url":null,"abstract":"We use stratigraphic relations, paleoflow data, and 40Ar/39Ar dating to interpret net aggradation, punctuated by at least two minor incisional events, along part of the upper ancestral Rio Grande fluvial system between 5.5 and 4.5 Ma (in northern New Mexico). The studied fluvial deposits, which we informally call the Sandlin unit of the Santa Fe Group, overlie a structural high between the San Luis and Española Basins. The Sandlin unit was deposited by two merging, westto southwest-flowing, ancestral Rio Grande tributaries respectively sourced in the central Taos Mountains and southern Taos Mountains-northeastern Picuris Mountains. The river confluence progressively shifted southwestward (downstream) with time, and the integrated river (ancestral Rio Grande) flowed southwards into the Española Basin to merge with the ancestral Rio Chama. Just prior to the end of the Miocene, this fluvial system was incised in the southern part of the study area (resulting in an approximately 4–7 km wide paleovalley), and had sufficient competency to transport cobbles and boulders. Sometime between emplacement of two basalt flows dated at 5.54± 0.38 Ma and 4.82±0.20 Ma (groundmass 40Ar/39Ar ages), this fluvial system deposited 10–12 m of sandier sediment (lower Sandlin subunit) preserved in the northern part of this paleovalley. The fluvial system widened between 4.82±0.20 and 4.50±0.07 Ma, depositing coarse sand and fine gravel up to 14 km north of the present-day Rio Grande. This 10–25 m-thick sediment package (upper Sandlin unit) buried earlier southto southeast-trending paleovalleys (500–800 m wide) inferred from aeromagnetic data. Two brief incisional events are recognized. The first was caused by the 4.82±0.20 Ma basalt flow impounding south-flowing paleodrainages, and the second occurred shortly after emplacement of a 4.69±0.09 Ma basalt flow in the northern study area. Drivers responsible for Sandlin unit aggradation may include climate-modulated hydrologic factors (i.e., variable sediment supply and water discharge) or a reduction of eastward tilt rates of the southern San Luis Basin half graben. If regional in extent, these phenomena could also have promoted fluvial spillover that occurred in the southern Albuquerque Basin at about 6–5 Ma, resulting in southward expansion of the Rio Grande to southern New Mexico.","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177706","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":"Gallery of Geology: Permian Angular Uncomformity, Robledo Mountains, Dona Ana County, New Mexico","authors":"S. Lucas, W. Nelson","doi":"10.58799/nmg-v37n1.21","DOIUrl":"https://doi.org/10.58799/nmg-v37n1.21","url":null,"abstract":"During the late Paleozoic (Pennsylvanian–Early Permian), the collision of Gondwana and Laurussia (Euramerica) created the Pangean supercontinent . That collision caused extensive tectonism along a then nearly equatorial zone that extended from eastern Europe to western North America . In the United States, from Illinois to Idaho, the Ancestral Rocky Mountains (ARM) formed as a lengthy belt of basement-cored uplifts (e .g ., Kluth and Coney 1981; McBride and Nelson 1998; Dickinson and Lawton 2003) . In New Mexico, these uplifts were mostly north-south oriented islands surrounded by shallow seas during the Pennsylvanian that were ultimately worn down and buried by alluvial sediments during the Early Permian (Woodward et al . 1999) . Deciphering many aspects of ARM tectonism in New Mexico has been difficult because few late Paleozoic structures are preserved intact (e .g ., Woodward et al ., 1999) . Indeed, most of these structures were reactivated by tectonism during the Late Cretaceous–Eocene Laramide orogeny or during the late Cenozoic tectonism associated with Basin and Range extension, notably of the Rio Grande rift . Perhaps the best documented ARM structures are those described by Bachman and Hayes (1958), Pray (1961) and others in the Sacramento Mountains of Otero County, where folded Pennsylvanian strata are truncated by nearly flat lying Permian red beds . Here, we document a small ARM structure in the southern Robledo Mountains of Doña Ana County . This structure is within the confines of the Prehistoric Trackways National Monument (PTNM) . The PTNM is approximately 2,137 hectares (5,280 acres) of land protected by an act of the U . S Congress primarily because of its world-class Early Permian trace-fossil assemblages (Lucas et al . 2011) . The trace fossils come from a lithostratigraphic unit referred to as the Robledo Mountains Formation of the Hueco Group (termed Abo Tongue or Abo Member of the Hueco Formation in older stratigraphic terminology, Seager et al ., 2008) . In the PTNM, the Robledo Mountains Formation is composed of approximately two-thirds drab-colored marine limestone and shale interbedded with one-third red terrestrial mudstone, siltstone and sandstone . The formation has an average thickness of 120 m . The siliciclastic red beds yield the trace fossils for which the PTNM was created . Voigt et al . (2013) recently argued that these sediments formed on a coastal floodplain during alternating wet and dry conditions . They based this conclusion on detailed sedimentological and ichnological analysis that indicates most of the trace fossils found in the Robledo Mountains Formation red beds were preserved on mud-draped surfaces within distal crevasse-splay siltstone to fine-grained sandstone . The physical and biological structures recorded in their study support the reconstruction of a freshwater ecosystem dominated","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71176428","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":"Then and Now -- A Brief History of Tokay, New Mexico","authors":"S. Hook","doi":"10.58799/nmg-v37n2.47","DOIUrl":"https://doi.org/10.58799/nmg-v37n2.47","url":null,"abstract":"In the 1920s the coal-mining settlement of Tokay, Socorro County, New Mexico (Fig. 1), was a bustling town of a few hundred inhabitants, including 125 coal miners (Julyan, 1996, p. 356). Tokay was on the southwest side of the Carthage coal field, about 10 miles east of San Antonio, New Mexico. See map in Hook and Cobban 2015 (this volume, p. 27). Among more than 50 frame structures Tokay boasted a single two-story building that had a pool hall/ barbershop/bar on the first floor and a school for grades 1-5 on the second. A staircase on the outside of the building allowed the students to go to school without having to pass through the bar first. A power plant on the north end of town provided electricity for Tokay; it billows smoke both in the postcard (Fig. 1) and in the 1927 oil painting of the town (cover and Fig. 2B). A combination general store/post office/mine office on the north side of the camp provided supplies for the miners and their families. The settlement had no bank, so the miners were paid partly in script or trade tokens in various denominations that could be redeemed at the store. The general store stocked the case of Tokay grapes that gave the town its name in 1917 (Anonymous, 1968). The original town was established in 1915 by Bartley H. Kinney, who later served as President of the board of Regents of the New Mexico School of Mines. Mr. Kinney, a mining engineer, organized the San Antonio Coal Company to mine coal in the southwest portion of the Carthage coal field. During the first year or two of its existence, the town had no formal, i.e., no federally recognized, name. The Post Office Department had rejected many names for the town, including the name “Kinney,” which it found to be in conflict. One day, according to Julyan (1996, p. 356), “... while Kinney and a postal inspector were discussing names in the community’s general store, Kinney looked at a case of Tokay grapes on the counter and asked, “How about Tokay?” The inspector agreed and the town of Tokay was born, named for a very sweet grape and wine that had nothing to do with coal mining. Tokay had a post office from 1917 until 1932. Mining ceased in the late 1940s, when most of the town’s frame buildings were moved to Socorro. However, during Tokay’s heyday, the plaza between the school house and general store (Figs.1 and 3) was used for festivals and celebrations; three major holidays—Mexico’s 1862 victory over France (Cinco de Mayo), U.S. Independence Day (July 4th), and Mexican Independence Day (Sixteenth of September)—were celebrated with explosions of miners’ firecrackers (sticks of dynamite). The married miners and their families lived in four rows of six frame houses on either side of the plaza (Fig. 3). A physician lived and worked in town. A small Catholic mission, part of the San Marcial Parish, was located on the south end of the settlement, as was a windmill that was the water source for the camp’s boilers and industrial use. A well about a mile south of ","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177669","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":"Audley Dean Nicols' Tokay Panorama of 1927","authors":"R. Eveleth","doi":"10.58799/nmg-v37n2.52","DOIUrl":"https://doi.org/10.58799/nmg-v37n2.52","url":null,"abstract":"A well-worn cliché tells us that “a picture is worth a thousand words,” but in the case of Audley Dean Nicols’ panorama a mere thousand is woefully insufficient to do it justice. The story of how artist Nicols came to create his masterpiece is found elsewhere in this volume; the following are descriptions of the principal features that can be observed or, in one case, almost observed, from Nichols’ vantage point just east of Tokay, New Mexico. These include, from left to right, the New Mexico Midland Railway, Magdalena Range, Socorro Peak, and the “M” on Socorro Peak. The mining camp of Tokay, visible at far left and major focal point for Nichols, is described elsewhere in this volume.","PeriodicalId":35824,"journal":{"name":"New Mexico Geology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71177735","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}