Results 21 to 30 of about 54,488 (217)

Isotope geochemistry and petrogenesis of peralkaline Middle Miocene ignimbrites from central Sonora: relationship with continental break-up and the birth of the Gulf of California [PDF]

open access: yes, 2008
Middle Miocene peralkaline ignimbrites constitute a specific geodynamic marker of the early stage of opening of the Gulf of California, preserved either in central Sonora or the Puertecitos area, in Baja California.
Amortegui, Andrea   +7 more
core   +3 more sources

Drought influence over radial growth of Mexican conifers inhabiting mesic and xeric sites [PDF]

open access: yes, 2017
Drought is a major constraint of forest productivity and tree growth across diverse habitat types. In this study, we investigated the drought responses of four conifer species growing within two locations of differing elevation and climatic conditions in
Acosta Hernández, Andrea C.   +4 more
core   +2 more sources

A taxonomic review of the endemic Mexican genus Ceratotrupes Jekel, 1865 (Coleoptera: Geotrupidae: Ceratotrupini), with the description of an unexpected new species from the Sierra Madre del Sur

open access: yesEuropean Journal of Taxonomy, 2023
In this study, we revise the taxonomy of the endemic Mexican genus Ceratotrupes Jekel, 1865. It comprises three species, distributed in the Sierra Madre Occidental and Trans-Mexican Volcanic Belt (Ceratotrupes fronticornis (Erichson, 1847) and ...
Alfonsina Arriaga-Jiménez   +4 more
doaj   +1 more source

Hacia una síntesis biogeográfica de México

open access: yesRevista Mexicana de Biodiversidad, 2005
EL RECONOCIMIENTO DE COMPONENTES BIÓTICOS CONSTITUYE UNA PRIMERA ETAPA HACIA UNA TEORÍA BIOGEOGRÁFICA SINTÉTICA. EN MÉXICO PODEMOS CARACTERIZAR 3 COMPONENTES BIÓTICOS PRINCIPALES, CADA UNO CON UNA COMBINACIÓN DIFERENTE DE ELEMENTOS BIÓTICOS.
JUAN J. MORRONE
doaj   +1 more source

Áreas idóneas con potencial para la producción de semillas de Pinus chihuahuana Engelm. y Pinus leiophylla Schltdl. & Cham. en México

open access: yesBotan‪ical Sciences, 2020
Antecedentes: El modelado de nicho ecológico es una herramienta utilizada para delimitar y estimar las áreas de distribución de una especie y representarlas en forma de mapa.
Gyorgy Eduardo Manzanilla-Quijada   +4 more
doaj   +1 more source

Origin of voluminous mid-tertiary ignimbrites of the batopilas region, Chihuahua: implications for the formation of continental crust beneath the Sierra Madre Occidental

open access: yesGeofísica Internacional, 1986
Las ignimbritas riolíticas de la región de Batopilas, del norte de la Sierra Madre Occidental, están interestratificadas con un número menor de lavas andesíticas y dacíticas.
K.L. Cameron, M. Cameron, B. Barreiro
doaj   +1 more source

A stress-controlled mechanism for the intensity of very large magnitude explosive eruptions [PDF]

open access: yes, 2011
Large magnitude explosive eruptions are the result of the rapid and large-scale transport of silicic magma stored in the Earth's crust, but the mechanics of erupting teratonnes of silicic magma remain poorly understood.
Costa, Antonio   +3 more
core   +1 more source

Storeria storerioides [PDF]

open access: yes, 2008
Number of Pages: 4Integrative BiologyGeological ...
Ernst, Carl H.
core   +1 more source

Procinura, P. aemula [PDF]

open access: yes, 2006
Number of Pages: 4Integrative BiologyGeological ...
Chiszar, David   +2 more
core   +1 more source

Kinosternon integrum [PDF]

open access: yes, 1998
Number of Pages: 6Integrative BiologyGeological ...
Berry, James. F.   +2 more
core   +1 more source

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