Geochemistry and geochronology of the Sierra de Gomez Limestone-hosted U deposit, Chihuahua: Implications for distribution of Rio Grande rift mineral deposits in northern Mexico

Villarreal-Fuentes, Janet; Levresse, Gilles; Nieto-Samaniego, Ángel F.; Alexandre, Paul; Corona-Esquivel, Rodolfo

doi:10.1016/j.oregeorev.2016.01.004

Cited by 7 publications

(3 citation statements)

References 41 publications

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“…El interés en llevar a cabo la prospección geoquímica en estas microcuencas se ha centrado en los minerales radiactivos y elementos asociados como vanadio, zinc y otros metales, los cuales pueden estar albergados en en facies sedimentarias orgánicas de origen marino, como los depósitos polimetálicos conocidos en varias partes del mundo, por ejemplo en lutitas negras (Lehman, 2014; Lewis et al, 2010;Lecomte et al, 2014;Villarreal et al, 2016).…”

Section: Introductionunclassified

Estudio de prospección geoquímica en sedimentos de las microcuencas Chirimoyo y Guineo, Ecuador

Manrique-Carreño

Guamán-Jaramillo

2020

revbol

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Se llevó a cabo un muestreo de sedimentos fluviales en las microcuencas Chirimoyo y Guineo, en el sector Puyango, provincia de Loja, Ecuador, con el fin de hacer un estudio de prospección geoquímica, determinando valores anómalos estadísticamente de CaO (>3,46% en peso), MnO (>0,26% en peso), P2O5 (>12,63% en peso), V (>693 ppm), Zn (>709 ppm), Cu (>108 ppm) y valores subanómalos de U (>60 ppm) y Ni (>232 ppm) para la subcuenca Chirimoyo. En cuanto a la subcuenca Guineo se determinaron los siguientes valores anómalos: MnO (>0,47% en peso), TiO2 (>1,16% en peso), valores subanómalos de CaO (>7,01% en peso), P2O5 (>0,96% en peso), V (>1903 ppm), U (>50 ppm), Ni (>451 ppm) y Zn (>1306 ppm). De acuerdo a los mapas de anomalías geoquímicas los valores más altos de vanadio (2520 ppm en Guineo), uranio (70 ppm en Chirimoyo), zinc (1445 ppm en Guineo) y níquel (629 ppm en Guineo) se asocian a la parte norte de ambas microcuencas, específicamente en el norte de la microcuenca Guineo cercano al sector de La Sota, en donde afloran las rocas sedimentarias de la Formación Puyango, que contienen calizas bituminosas y lutitas negras calcáreas, las cuales puedan estar albergando mineralizaciones de estos elementos, esto se evidencia por los valores altos de Ca, lo que indica un origen carbonático de los sedimentos. Los sedimentos están compuestos principalmente de silicatos y aluminosilicatos (arcillas y micas), en menor proporción óxi-hidróxidos de Fe-Ti: goetita, magnetita y anatasa. Adicionalmente se detectó calcita y circón en dos muestras. Existe la presencia de minerales de vanadio como sherwoodita, rosita, ronneburgita y sincosita, lo cual corrobora las anomalías geoquímicas de vanadio determinadas mediante análisis químico

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Section: Introductionunclassified

Estudio de prospección geoquímica en sedimentos de las microcuencas Chirimoyo y Guineo, Ecuador

Manrique-Carreño

Guamán-Jaramillo

2020

revbol

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“…The boundary between the RGR and Basin and Range south of the Colorado Plateau has been generally positioned east of the Cookes Range, Florida Mountains, and Deming basin, and west of the Mimbres Basin (Fig. 3), approximately aligned with the extension of the eastern edge of the Colorado Plateau to the north (Woodward et al, 1978;Mack, 2004;Villarreal-Fuentes et al, 2016;van Wijk et al, 2018). However, this position is somewhat arbitrary, and the regional relationship between the two provinces remains poorly understood.…”

Section: Boundary Between the Basin And Range And Rio Grande Riftmentioning

confidence: 99%

Thermochronological transect across the Basin and Range/Rio Grande rift transition: Contrasting cooling histories in contiguous extensional provinces

et al. 2021

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The Basin and Range and Rio Grande rift (RGR) are regions of crustal extension in southwestern North America that developed after Laramide-age shortening, but it has not been clear whether onset and duration of extension in these contiguous extensional provinces were the same. We conducted a study of exhumation of fault blocks along a transect from the southeastern Basin and Range to across the RGR in southern New Mexico. A suite of 128 apatite and 63 zircon (U-Th)/He dates (AHe and ZHe), as well as 27 apatite fission-track (AFT) dates, was collected to investigate the cooling and exhumation histories of this region. Collectively, AHe dates range from 3 to 46 Ma, ZHe dates range from 2 to 288 Ma, and AFT dates range from 10 to 34 Ma with average track lengths of 10.8–14.1 µm. First-order spatiotemporal trends in the combined data set suggest that Basin and Range extension was either contemporaneous with Eocene–Oligocene Mogollon-Datil volcanism or occurred before volcanism ended ca. 28 Ma, as shown by trends in ZHe data that suggest reheating to above 240 °C at that time. AHe and ZHe dates from the southern RGR represent a wider range in dates that suggest the main phase of cooling occurred after 25 Ma, and these blocks were not reheated after exhumation. Time-temperature models created by combining AHe, AFT, and ZHe data in the modeling software HeFTy were used to interpret patterns in cooling rate across the study area and further constrain magmatic and/or volcanic versus faulting related cooling. The Chiricahua Mountains and Burro Mountains have an onset of rapid extension, defined as cooling rates in excess of >15 °C/m.y., at ca. 29–17 Ma. In the Cookes Range, a period of rapid extension occurred at ca. 19–7 Ma. In the San Andres Mountains, Franklin Mountains, Caballo Mountains, and Fra Cristobal range, rapid extension occurred from ca. 23 to 9 Ma. Measured average track lengths are longer in Rio Grande rift samples, and ZHe dates of >40 Ma are mostly present east of the Cookes Range, suggesting different levels of exhumation for the zircon partial retention zone and the AFT partial annealing zone. The main phase of fault-block uplift in the southern RGR occurred ca. 25–7 Ma, similar to what has been documented in the northern and central sections of the rift. Although rapid cooling occurred throughout southern New Mexico, thermochronological data from this study with magmatic and volcanic ages suggest rapid cooling was coeval with magmatism in the Basin and Range, whereas in the Rio Grande rift cooling occurred during an amagmatic gap. These observations support a model where an early phase of extension was facilitated by widespread ignimbrite magmatism in the southeastern Basin and Range, whereas in the southern Rio Grande rift, extension started later and continues today and may have occurred between local episodes of basaltic magmatism. These differences in cooling history make the Rio Grande rift tectonically distinct from the Basin and Range. We infer based on geologic and thermochronological evidence that the onset of extension in the southern Rio Grande rift occurred at ca. 27–25 Ma, significantly later than earlier estimates of ca. 35 Ma.

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“…Some mineral deposits of U hosted in limestones occur in China, India, Mexico and Greece (Min et al, 1997;Nagarajan et al, 2011;Tzifas et al, 2014;Villarreal et al, 2016;IAEA, 2018). A V-U deposit hosted in black limestones is also known in Colombia, named the Berlin deposit (U 3 O 8 corp., 2018) 1 , which was formed by the chemical reduction of these elements (IAEA, 2009).…”

Section: Introductionmentioning

confidence: 99%

Origin of the vanadium-uranium geochemical anomalies in the limestones of the Puyango Formation, La Sota (Ecuador): preliminary results

Ortíz

2023

andgeo

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Vanadium (V) and uranium (U) are critical elements for the energy and technology industry. They are characterized by low abundance in the earth crust´s rocks, but can be concentrated and give rise to sedimentary mineral deposits as a result of redox processes during sedimentation and diagenesis. The anomalies of V-U in La Sota, Ecuador, are found in black limestones and black calcareous shales of Cretaceous age. Here we present the results of a geochemical study and a multivariate geostatistical analysis, which enables us to infer four different associations: 1) disseminated organic matter in the limestones that hold V and Zn, probably in the form of organometallic complexes; 2) phosphatic minerals and concentrations of U, HREE and Ni, which may be incorporated as trace elements in the phosphates, compatible with sedimentation in an anoxic environment; 3) Ca in carbonates from a marine environment; and, 4) litophile elements associated with detritic minerals, such as quartz, plagioclase, feldspar, micas, clays and oxyhydroxides of Fe-Mn-Ti, produced by weathering and erosion. Our findings suggest that V is associated mainly with the organic matter of marine origin in the bituminous limestones, while U is associated with P, thereby indicating the formation of uraniferous phosphates during sedimentation.

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Geochemistry and geochronology of the Sierra de Gomez Limestone-hosted U deposit, Chihuahua: Implications for distribution of Rio Grande rift mineral deposits in northern Mexico

Cited by 7 publications

References 41 publications

Estudio de prospección geoquímica en sedimentos de las microcuencas Chirimoyo y Guineo, Ecuador

Estudio de prospección geoquímica en sedimentos de las microcuencas Chirimoyo y Guineo, Ecuador

Thermochronological transect across the Basin and Range/Rio Grande rift transition: Contrasting cooling histories in contiguous extensional provinces

Origin of the vanadium-uranium geochemical anomalies in the limestones of the Puyango Formation, La Sota (Ecuador): preliminary results

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