Estratigrafía de la Serie Comancheana del Noreste de México

Longoria, José F.

doi:10.18268/bsgm1975v36n1a2

Cited by 10 publications

(7 citation statements)

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“…This microfacies is typical of deposits in the outer ramp environments (neritic water depth). This microfacies is diagnostic of the Tamaulipas Limestone (Longoria, 1975;Longoria and Davila, 1979;Longoria and Monreal, 1991); thus, this interval is assigned to that unit.…”

Section: Unit 4: "Cupido Limestone"mentioning

confidence: 97%

“…Traditionally, the Cupido Formation has been regarded as the shallow-water equivalent of the Lower Tamaulipas Formation, although as discussed before (Longoria, 1975) the actual time equivalency needs to be documented. Biochronologic studies by Gamper (1977) of the Tamulipas limestone based on microfossils demonstrate that the Borrega Member (lower Tamaulipas of other authors) of the Tamaulipas limestone represents the time span from the Tithonian to the lower Aptian; thus, the La Borrega Member is the time equivalent of the units between the La Casita and La Peña Formations.…”

Section: Unit 4: "Cupido Limestone"mentioning

confidence: 99%

“…The threefold subdivision of the La Peña Formation into members (La Boca Clay, La Presa Limestone, and La Silla Limestone) established by Longoria from Nuevo León (Longoria, 1975;Longoria and Davila, 1979) reflects the paleoceanographic changes during the Aptian. At the La Boca Canyon in the Cerro de La Silla, southeastern Monterrey, the combined thickness of these members is 89 m. This subdivision by Longoria and Davila (1979) is close to the thickness of 66 m measured in this study, but is considerably thinner than the 451 m measured by Imlay (1936) from Hacienda La Peña.…”

Section: Unit 5: La Peña Formationmentioning

confidence: 99%

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Type Mesozoic succession of northern Mexico: Cañon La Casita

Longoria¹,

Clowes²,

Monreal³

1999

Special Paper 340: Mesozoic Sedimentary and Tectonic History of North-Central Mexico

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Section: Unit 4: "Cupido Limestone"mentioning

confidence: 97%

Section: Unit 4: "Cupido Limestone"mentioning

confidence: 99%

Section: Unit 5: La Peña Formationmentioning

confidence: 99%

See 1 more Smart Citation

Type Mesozoic succession of northern Mexico: Cañon La Casita

Longoria¹,

Clowes²,

Monreal³

1999

Special Paper 340: Mesozoic Sedimentary and Tectonic History of North-Central Mexico

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“…y el calpionélido Colomiella sp. identificados en láminas delgadas de la Caliza Mural superior (Figura 11), indican un rango de edad del Aptiano tardío al Albiano temprano para esta unidad, a partir de lo reportado por Longoria (1974Longoria ( , 1975Longoria ( , 1977Longoria ( , 1981Longoria ( y 1984 sobre la microfauna cretácica en el norte de México, lo cual es consistente con lo reportado por González-León et al (2008) en el rancho El Búfalo, al norte del área de estudio. La edad del resto de las unidades del Grupo Bisbee no fue posible obtenerla debido a que no se encontraron fósiles índice que pudiesen contribuir a la asignación de su edad.…”

Section: Posición Cronoestratigráficaunclassified

Caracterización del Grupo Bisbee (Cretácico Inferior) en el área al sur de la sierra Basómari, Noreste de Sonora, México

Monreal

Cano-Corona

Grijalva-Noriega

et al. 2011

BSGM

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Caracterización del Grupo Bisbee en el área al sur de la sierra Basómari, Noreste de Sonora, México 365 ResumenEl Grupo Bisbee es la unidad litoestratigráfica más importante que identifica al Cretácico Inferior en el sureste de Arizona y noreste de Sonora. En la sierra Basómari, este grupo está caracterizado por afloramientos de las formaciones Morita, Mural y Cintura, los cuales están fuertemente afectados por pliegues de dimensiones kilométricas localmente volcados, fallas de cabalgadura de edad mesozoica, y un fallamiento normal cenozoico. Estas unidades litoestratigraficas están sobreyacidas por rocas volcánicas y sedimentarias terciarias. En el área de estudio la Formación Morita está constituida por estratos delgados a medianos de areniscas de grano fino con algunos horizontes con madera fósil, intercalados con estratos de calizas fosilíferas y calizas arcillosas con estratificación de delgada a mediana. La Caliza Mural se caracteriza por capas de calizas fosilíferas que varían de delgadas a masivas, intercaladas con capas de areniscas y areniscas arcillosas de espesores delgados a medianos. La Formación Cintura está compuesta principalmente por estratos de areniscas de espesores que varían de delgados a masivos, intercalados con capas de lodolitas de estratificación laminar a delgada. Las rocas del Grupo Bisbee en el área de la sierra Basómari representan ambientes sedimentarios marinos de aguas someras: nerítico interior de intermarea, nerítico medio con desarrollo de condiciones lagunares y de bancos ooidales, nerítico exterior (plataforma marina abierta) y pelágico.Palabras clave: litoestratigrafía, Cretácico Inferior, Grupo Bisbee, Sonora, México. Abstract The Bisbee Group is the most important lithostratigraphic unit that identifies the Lower Cretaceous in southeastern Arizona

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“…1). These sections were selected based on previously published biostratigraphic studies that indicate that these sections are relatively complete and span the Barremian to the Albian (Longoria 1975(Longoria , 1984Trejo 1960;Wilson 1981;). We designed the magnetostratigraphic sampling scheme to sample the interval thought to correspond to the younger portion of the M-sequence chrons, in particular Chrons CM0±CM5.…”

Section: S a M P L I N Gmentioning

confidence: 99%

Magnetostratigraphy of mid-Cretaceous limestones from the Sierra Madre of northeastern Mexico

Clement

Poetisi

Bralower

et al. 2000

Geophysical Journal International

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We present the results of a palaeomagnetic study of four mid‐Cretaceous limestone sections exposed in northeastern Mexico. The limestones are weakly magnetized and exhibit two‐ to three‐component magnetizations. These magnetization components appear to be carried by both a sulphide mineral and a magnetite‐titanomagnetite mineral. The sulphide mineral carries a reverse polarity overprint that often makes it difficult to isolate definitively the higher‐unblocking‐temperature component. The high‐unblocking‐temperature component is well defined in the upper portion of the Santa Rosa Canyon section and in the Cienega del Toro section and passes the fold test. The characteristic remanent magnetization (ChRM) inclinations agree well with predicted mid‐Cretaceous inclinations for these sites, although the declinations differ by more than 100°. The relative rotation between these two sites probably occurred as the thrust sheets were emplaced during Laramide deformation. At two of the sections, namely Cienega del Toro and the overturned Los Chorros sections, only normal polarity directions are observed. The La Boca Canyon and Santa Rosa Canyon sections exhibit zones of both normal and reverse polarity magnetization. Correlation of these polarity zones with the geomagnetic polarity timescale provides a time framework for lithostratigraphic and palaeoceanographic studies of these sections.

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Estratigrafía de la Serie Comancheana del Noreste de México

Cited by 10 publications

References 0 publications

Type Mesozoic succession of northern Mexico: Cañon La Casita

Type Mesozoic succession of northern Mexico: Cañon La Casita

Caracterización del Grupo Bisbee (Cretácico Inferior) en el área al sur de la sierra Basómari, Noreste de Sonora, México

Magnetostratigraphy of mid-Cretaceous limestones from the Sierra Madre of northeastern Mexico

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