Geologic framework of Cretaceous plutons along a west-to-east transect in the southern Peninsular Ranges batholith, Baja California, Mexico: Insights from geochemical, isotopic, and geochronologic data

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-09-15T00:31:11Z
Fecha de publicación2022-04-27
ResumenCretaceous plutons of the Peninsular Ranges batholith (PRB) intruded two different host rock sequences in the central part of the Baja California peninsula, Mexico. The western sequence is the volcanic-volcaniclastic Alisitos oceanic arc, and the eastern lithologies are mainly metasedimentary pre-Mesozoic units. We analyze the ~116 Ma San Jerónimo (SJe) pluton in the PRB western zone and the Compostela (COM) and San Pedro (SP) plutons (~97 Ma and ~104 Ma, respectively) in the PRB eastern zone. The SJe pluton varies from pyroxene-hornblende gabbro to hornblende-biotite tonalite. Their rocks are subalkaline, calcic/calc-alkaline, and metaluminous, which are akin to island arc granite settings; and yield εNdt values of +5.6 and +6.8, indicating a depleted mantle source without discernible crustal assimilation. The SJe pluton shows subparallel REE patterns (LaN/YbN = 0.5–4.4), with progressive enrichments in REE abundances in the tonalites, suggesting differentiation by fractional crystallization of a single magmatic system. Also, show low Sr/Y values (<20) and La/Yb (<10), suggesting a thin (~20 km) crust beneath the western zone of this Alisitos arc segment. The COM pluton varies from biotite tonalite and biotite-hornblende granodiorite. The SP pluton consists of biotite-muscovite granodiorite and biotite-muscovite granite. These rocks from COM and SP are subalkaline, magnesium, calcic/calc-alkaline, and mainly peraluminous. The eastern zone plutons yield εNdt values from +4.2 to −2.3, indicating mantle-derived melts with the contribution of assimilated crustal material. Their strongly fractionated REE patterns (LaN/YbN = 8–38.3) are characteristic of evolved melts or magmas differentiated within the crust. The high Sr/Y (~90) and La/Yb (~21) further suggest thicker crustal zones (>45 km). Permeation features and parallelism between the metamorphic foliations of the prebatholithic rocks and the magmatic foliation of the plutons indicate a post-deformational emplacement of the mid-Late Cretaceous plutons of the southern PRB. Our data restricts the deformation event before ca. 100–105 Ma.es_ES
Doihttps://doi.org/10.1080/00206814.2022.2068079es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/2858
Idiomaenes_ES
EditorialTaylor & Francises_ES
RelaciónInternational Geology Reviewes_ES
URL relacionadohttps://doi.org/10.1080/00206814.2022.2068079es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteInternational Geology Review
Palabra clavePlutones_ES
Palabra claveGeologyes_ES
Palabra claveBatholithes_ES
Palabra claveGeochemistryes_ES
Palabra claveHornblendees_ES
Palabra claveBiotitees_ES
Palabra claveZircones_ES
Palabra clavePetrologyes_ES
Palabra claveQuartzes_ES
Palabra clavePaleontologyes_ES
Palabra claveTectonicses_ES
ClasificaciónGeological and Geochemical Analysises_ES
TítuloGeologic framework of Cretaceous plutons along a west-to-east transect in the southern Peninsular Ranges batholith, Baja California, Mexico: Insights from geochemical, isotopic, and geochronologic dataes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorTorres-Carrillo, Xochitl G.
AutorDelgado-Argote, Luis Alberto
AutorWeber, Bodo
AutorContreras‐López, Manuel
AutorPeña-Alonso, Tomás A.
AutorAvilez-Serrano, Porfirio
AutorGómez-Álvarez, Doris Karina
AutorTorres-Carrillo, Xochitl G.es_ES
AutorDelgado-Argote, Luis Albertoes_ES
AutorWeber, Bodoes_ES
AutorContreras‐López, Manueles_ES
AutorPeña-Alonso, Tomás A.es_ES
AutorAvilez-Serrano, Porfirioes_ES
AutorGómez-Álvarez, Doris Karinaes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número5es_ES
Rango de páginas779-805es_ES
URL relacionadahttps://doi.org/10.1080/00206814.2022.2068079
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen65es_ES

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