Strontium isotope geochemistry of fluorite mineralization associated with fluorine-rich igneous rocks from the Sierra Madre Occidental, Mexico; possible exploration significance

1985 ◽  
Vol 80 (1) ◽  
pp. 33-42 ◽  
Author(s):  
Joaquin Ruiz ◽  
Stephen E. Kesler ◽  
Lois M. Jones
Keyword(s):  
Isotope Geochemistry ◽  
Strontium Isotope ◽  
Igneous Rocks ◽  
Sierra Madre Occidental ◽  
Sierra Madre

STABLE ISOTOPE COMPOSITIONS OF MODERN SURFACE WATER IN THE SIERRA MADRE OCCIDENTAL, MEXICO

2020 ◽  
Author(s):  
Jordan M. Foote ◽  
◽  
Majie Fan ◽  
Aaron J. Martin ◽  
Lu Zhu
Keyword(s):  
Surface Water ◽  
Stable Isotope ◽  
Sierra Madre Occidental ◽  
Sierra Madre

Post-Oligocene river incision, southern Sierra Madre Occidental, Mexico

Geomorphology ◽  
2003 ◽  
Vol 55 (1-4) ◽  
pp. 235-247 ◽  
Author(s):  
David R. Montgomery ◽  
Jorge López-Blanco
Keyword(s):  
Sierra Madre Occidental ◽  
River Incision ◽  
Sierra Madre

scholarly journals New locality of the endangered Sierra Madre Sparrow (Xenospiza baileyi) from the State of Durango, Mexico, and recommendations for its conservation

2018 ◽  
Vol 34 (1) ◽  
pp. 1-6 ◽  
Author(s):  
José Hugo Martínez-Guerrero ◽  
Jorge Nocedal ◽  
Daniel Sierra-Franco ◽  
Samuel Ignacio Arroyo-Arroyo ◽  
Martín Emilio Pereda-Solís
Keyword(s):  
The State ◽  
Reproductive Season ◽  
Livestock Grazing ◽  
Rainfed Agriculture ◽  
Sierra Madre Occidental ◽  
Sierra Madre ◽  
Protection Area ◽  
Northwestern Mexico ◽  
The City ◽  
Special Protection

The Sierra Madre Sparrow (Xenospiza baileyi) is an endemic species of Mexico that is threatened with extinction. Its distribution is reported in two areas: One in the Transvolcanic Belt of central Mexico (La Cima) near Mexico City and the other in the Sierra Madre Occidental in northwestern Mexico (Ejido Ojo de Agua El Cazador) near the city of Durango, in the state of Durango. The habitat is the same in these two areas, and consists of sub-alpine grassland that is located in shallow valleys or shallows. In our case, "El Bajío la Cantera" of approximately 55 hectares, is mostly used in rainfed agriculture, protected from livestock grazing with wire fences, which in turn represents protection for remnants of grassland where they are the birds. “El Bajío la Cantera" belongs to Ejido 12 de Mayo, Municipality of San Dimas, Durango, where 28 males were detected singing along a 500 meter transect. This finding represents the population of the healthiest Sierra Madre Sparrow currently known, so it would be necessary to document their population trend over time. This information can help to evaluate and propose the creation of a special protection area for the species that involves joint government actions and ejidatarios tending to conserve the habitat during the reproductive season in order to increase and / or maintain the size of the population.

scholarly journals Adolescencia rural indígena, escuela y masculinidades

2018 ◽  
Vol 13 (1) ◽  
pp. 69
Author(s):  
Lourdes Consuelo Pacheco-Ladrón de Guevara
Keyword(s):  
Sierra Madre Occidental ◽  
Sierra Madre

Tanto la niñez como la adolescencia se consideran construcciones socioculturales enmarcadas en contextos específicos. De ahí que lejos de establecer parámetros genéricos sobre la adolescencia, su estudio particular permite especificar las formas de ser adolescente en situaciones concretas. En el presente documento se aborda la construcción de las masculinidades rurales indígenas desde la comunidad y la escuela telesecundaria, para lo cual se realizaron grupos focales y entrevistas a estudiantes indígenas de telesecundaria de la Sierra Madre Occidental durante los años 2010 y 2011. Se discute la importancia de abordar la construcción de las masculinidades adolescentes en el marco de la irrupción de la escuela telesecundaria en la zona indígena en función de que la escuela telesecundaria se ha convertido en el espacio de la adolescencia indígena rural. Se concluye que la escuela tiene posibilidades de convertirse en un espacio de discusión de las propuestas comunitarias tradicionales si es capaz de replantear la funcionalidad de las masculinidades en los contextos específicos a partir de las condiciones del grupo cultural.

scholarly journals Sistematización bioclimática de la Sierra Madre Occidental (México) y su relación con los pisos de vegetación

Polibotánica ◽  
2017 ◽  
Vol 0 (43) ◽  
Author(s):  
M.Á. Macías-Rodríguez ◽  
J. Giménez de Azcárate-Cornide ◽  
L.F. Gopar-Merino
Keyword(s):  
Sierra Madre Occidental ◽  
Sierra Madre

scholarly journals Estimation of Band-Tailed Pigeon Band Recovery and Population Vital Rates in Colorado, 1969–1981

2016 ◽  
Vol 7 (2) ◽  
pp. 369-376 ◽  
Author(s):  
Mark E. Seamans ◽  
Clait E. Braun
Keyword(s):  
New Mexico ◽  
Data Collection ◽  
Standard Error ◽  
Additional Data ◽  
Vital Rates ◽  
Data Set ◽  
Sierra Madre Occidental ◽  
Annual Survival ◽  
Sierra Madre ◽  
Additional Data Collection

AbstractData to inform population assessment of the Interior subspecies of band-tailed pigeon, Patagioenas fasciata fasciata (breeding range from Colorado and Utah south into Sierra Madre Occidental of Mexico), have been lacking despite substantial past banding efforts. We used a data set of more than 26,000 bandings from Colorado, with 3,500 live recaptures and 780 recoveries from the harvest of banded individuals to estimate annual survival, fidelity, and harvest rates. Most birds were harvested in Colorado (62%) followed by Mexico (18%); New Mexico (16%); Arizona (3%); and 1% or less each in California, Washington, and Utah. On average, each year 15% (range 0–30%) of surviving band-tailed pigeons did not return to Colorado. From 1969 to 1981 mean annual survival was 0.633 (standard error [SE] = 0.031) for hatch-year and 0.719 (SE = 0.016) for after-hatch-year birds, with a mean annual recovery rate of 0.015 (SE = 0.002) for hatch-year and 0.011 (SE = 0.001) for after-hatch-year birds. From 1970 to 1974, mean annual abundance of band-tailed pigeons in Colorado on 1 September was 59,911–88,290. These data provide a baseline for additional data collection for band-tailed pigeons in the range of the Interior subspecies.

Actividad microsísmica en el área de Canatlán, Durango y su relación con la geología regional

1993 ◽  
Vol 32 (3) ◽  
pp. 501-510
Author(s):  
Jaime Yamamoto
Keyword(s):  
Sierra Madre Occidental ◽  
Sierra Madre

Los hipocentros de 22 microsismos (-0.09≤Mc≤1.1) que ocurrieron en el área de Canatlán, Durango (24°38'N, 105°W) del 30 de abril al 2 de mayo del 1972 fueron determinados. Los eventos se localizan entre la Laguna de Santiaguillo y el flanco oriental de la Sierra de la Magdalena perteneciente a la Sierra Madre Occidental a una profundidad de 1.0 a 5.5 km. La distribución espacial de los epicentros presenta dos tendencias lineales de sismicidad orientadas N21°W y N71°E de longitud 7.2 y 5.4 km respectivamente, que sugiere la existencia de un sistema de fallas conjugadas sísmicamente activas. La tendencia N21°W coincide con la dirección de las antiguas fallas normales longitudinales asociadas con la Sierra Madre Occidental. Aunque no se tiene registro gráfico de los eventos principales ocurridos el 18 de marzo de 1972 al inicio de la secuencia, el radio de perceptibilidad indica que probablemente tuvieron una magnitud mb de 3.1.

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