Tectonic setting of pre-Oxfordian units from central and northeastern Mexico: A review

Barboza-Gudiño, José Rafael; Tristán-González, Margario; Torres-Hernández, José Ramón

doi:10.1130/0-8137-2340-x.197

Cited by 21 publications

(13 citation statements)

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“…The absence of Early Jurassic zircons also indicates deposition of the succession prior to the presence of the Early Jurassic volcanic arc in the region, so that a real depositional age for the analyzed samples in the Late Triassic may be inferred, as also known from biostratigraphic data for the marine sequence (Cantú-Chapa, 1969;Cuevas-Pérez, 1985;Gómez-Luna, 1998;Gallo-Padilla et al, 1993) and the Late Triassic fl ora found in the fl uvial sequence exposed in Nuevo León and Tamaulipas (Carrillo-Bravo, 1961;Mixon et al, 1959;Mixon, 1963;Weber, 1997). The maximum age of deposition for the turbiditic succession exposed in the Sierra de Catorce, San Luis Potosí, is 230-225 Ma (three zircon ages between 237 and 209 Ma) and confi rms a post-Late Permian age for these strata, consistent with an interpreted Late Triassic age (Martínez-Perez, 1972;López-Infanzón, 1986;Cuevas Perez, 1985;Barboza-Gudiño et al, 1999), but incompatible with an interpreted late Paleozoic age (e.g., Bacon, 1978;Bartolini, 1998;Franco-Rubio, 1999).…”

Section: Analytical Resultssupporting

confidence: 56%

“…The stratigraphic sections studied ( Fig. 1) are distributed over an area of ~120,000 km 2 , where ties between outcrops within this region, based only in lithologic character, are tenuous (Barboza-Gudiño et al, 1999). Nevertheless, detrital zircon provenance data are particularly useful in this region because they permit correlation of strata from different coeval sedimentary environments.…”

Section: Introductionmentioning

confidence: 99%

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Late Triassic stratigraphy and facies from northeastern Mexico: Tectonic setting and provenance

et al. 2010

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Triassic strata in northeastern Mexico distributed over an area of ~120,000 km 2 have received relatively little attention in paleogeographic and tectonic reconstructions of western equatorial Pangea. Triassic marine sequences of the Zacatecas Formation in western San Luis Potosí and Zacatecas constitute facies corresponding to different sections of a submarine fan system previously described as the Potosí fan and were deposited on the paleo-Pacifi c margin of Pangea. New geochronologic data and fi eld observations permit revision of the stratigraphy from Late Triassic to Early Jurassic fl uvial deposits of the Huizachal Group that crop out in Nuevo León and Tamaulipas and indicate a link between the lower part of this succession (Triassic strata) and the Potosí fan. This work proposes and defi nes the El Alamar formation, which represents the only Triassic strata of the Huizachal Group (lower part of the Late Triassic-Early Jurassic La Boca Formation), and is interpreted as a continental succession that records a major fl uvial system draining equatorial Pangea and fl owing west into the Potosí fan. Petrographic and geochemical studies indicate that both Triassic successions, the Zacatecas Formation (marine) and El Alamar formation (continental) have continental block and recycled orogenic provenances. U-Pb detrital zircon geochronology by laser ablationmulticollector -inductively coupled plasmamass spectrometry show three main zircon age populations: (1) Grenvillian (1300-900 Ma); (2) Pan-African (700-500 Ma); and (3) dominant Permian-Triassic (280-240 Ma). The presence of these zircons displays evidence of sources in GrenvillianOaxaquia block, Pan-African terrains such as Yucatan and southeastern Texas, and a prominent contribution from the PermianTriassic east Mexico magmatic arc. Notable is the absence of detrital contributions from the southwestern North American craton. The geochronological data thus argue against proposed southeastward displacement of Triassic successions and their basement to their current position as proposed by the Mojave-Sonora megashear hypothesis. We propose that continental Triassic strata were deposited in eastern Mexico before the opening of the Gulf of Mexico basin, and are thus autochthonous and transported detritus toward the ancient Pacifi c margin into the Potosí fan, which is also autochthonous.

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Section: Analytical Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

Late Triassic stratigraphy and facies from northeastern Mexico: Tectonic setting and provenance

et al. 2010

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“…The association of population C with other populations derived from northwest of the Sierra Madre foreland indicates that Permian and Triassic plutons of Sonora and southern California, rather than plutons of the East Mexican arc to the east and northeast, were the primary sources for population C. Permian-Triassic zircons are also abundant in the Upper Triassic strata exposed locally in the Sierra Madre orogen (Barboza-Gudiño, 2008); thus, some grains The Jurassic zircons of population D (180-151 Ma) were derived from plutons and tuffs of the Early-Late Jurassic Cordilleran arc, which extends from the southwestern United States into northwestern Mexico (Busby-Spera, 1988;Dickinson and Lawton, 2001;Staude and Barton, 2001). Jurassic ignimbrites, volcanic fl ows, and subvolcanic plutons are also known from scattered exposures in northeastern Mexico (Jones et al, 1995;Barboza-Gudiño et al, 1999, where they represent the continuation of the Cordilleran arc trend, termed the Nazas arc, into the Sierra Madre Oriental (e.g., GrajalesNishimura et al, 1992). In the orogen, they form outcrops of restricted extent beneath Lower Cretaceous carbonate strata (e.g., Franco-Rubio, 1999) and, like subjacent Upper Triassic strata, were probably not widely exposed during the Late Cretaceous and Paleogene.…”

Section: Geochronologic Source Terranesmentioning

confidence: 99%

Provenance of Upper Cretaceous-Paleogene sandstones in the foreland basin system of the Sierra Madre Oriental, northeastern Mexico, and its bearing on fluvial dispersal systems of the Mexican Laramide Province

Lawton

Bradford

Vega

et al. 2009

Geological Society of America Bulletin

100

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Sandstone petrography and detrital zircon U-Pb analysis of Upper Cretaceous-Paleogene sandstones in the foreland basin of the Sierra Madre Oriental in northeastern Mexico indicate long-distance sediment transport from arc, basement, and thrust-belt sources lying to the west, northwest, and south. The basin fi ll, termed the Difunta Group, consists of sublitharenites, litharenites, feldspathic litharenites, and lithic arkoses derived from mixed sources that included sedimentary rocks, magmatic arc rocks, and subordinate basement rocks. Six age populations comprise the detrital zircon content of the sandstones: Proterozoic (1900-900 Ma), early Paleozoic (500-400 Ma), late Paleozoic-Early Triassic (288-235 Ma), Jurassic (180-151 Ma), Early Cretaceous (150-111 Ma), and Late Cretaceous-Paleogene (110-54 Ma). These grains were derived from several arc terranes, ranging in age from Permian to Paleogene, in western Mexico and the southwestern United States, from sedimentary rocks and possibly interbedded tuffs of the Sierra Madre Oriental orogen and from basement sources or their derivative sandstones of the southwestern United States. The petrographic and geochronologic provenance data corroborate existing models for derivation of much foreland detritus from arc sources to the west, identify the Sierra Madre orogen itself as an important source for sediment, and these data modify the Late Cretaceous-Paleogene paleogeography of Mexico to include a long, orogen-parallel fl uvial system with headwaters in the southwestern United States. The difference in average ages of the youngest grains in the sandstones and their inferred depositional ages is 10.5 m.y., indicating that the initial coarse fi ll of the foreland basin was derived from early Laramide uplift and eastward arc migration in northwestern Mexico and the southwestern United States.

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“…Se presenta gradación inversa, laminación y estratificación convoluta, con estructuras de canales y surcos. Estas estructuras primarias sugieren que las areniscas fueron depositadas por corriente turbidítica en un ambiente marino profundo (Córdoba-Méndez, 1964;Barboza-Gudiño et al, 1999;Bartolini et al, 2001;Díaz-Salgado, 2004). Entre esta litología autóctona hay olistolitos formados por bloques métricos y decamétricos de caliza recristalizada, roca volcánica almohadillada de composición basáltica, pedernal y serpentinita, muy deformados y con clivaje.…”

Section: Sucesiones Del Triásico Superior Y Jurásico De Méxicounclassified

Las formaciones Gran Tesoro y Nazas: evolución de las secuencias Triásico Superior-Jurásico Inferior en México y su significado tectogenético

Antuñano¹,

García²,

Sánchez³

2014

BSGM

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507 ResumenEste artículo es una integración e interpretación de datos, cuyos objetivos consisten en redefinir formalmente a la Formación Gran Tesoro y revisar la estratigrafía de la Formación Nazas, correlacionar ambos depósitos con otras sucesiones estratigráficas situadas en similar intervalo de tiempo geológico y vincular estos depósitos a un evento geodinámico regional. La Formación Gran Tesoro es una sucesión de pizarra y filita, que conserva texturas del protolito formado por rocas ígneas, sedimentarias clásticas y carbonatadas, con olistolitos que tienen fósiles del Paleozoico, por ello se consideró que esta formación tenía esa edad. La presencia de Classopollis cf. C. classoides Pflug, Classopollis cf. C. kieseri Reyre y Micrhystridium lymensis var. lymensis Wall, revela que la Formación Gran Tesoro es un depósito Mesozoico, más joven que lo previsto anteriormente. Originalmente la Formación Gran Tesoro incluyó una facies esquistosa, pero en este trabajo se segrega al esquisto de la formación por las siguientes razones: 1) Por ser de edades diferentes, el esquisto con edad isotópica de 326 ± 26 Ma (Misisípico) y la pizarra y filita de edad Mesozoica; 2) porque sus grados de metamorfismo revelan historias geológicas diferentes; 3) las relaciones de contacto entre el esquisto y las pizarra y filita son tectónicas. En este artículo se da formalidad mnemónica apropiada al Esquisto Pescaditos y a la Formación Gran Tesoro de acuerdo al Código de Nomenclatura Estratigráfica.La Formación Nazas, en el área de Villa Juárez, Durango, presenta dos miembros con capas depositadas en ambiente continental. En el miembro inferior predominan derrames volcánicos con cuerpos hipabisales intercalados entre limolitas, mientras que el miembro superior se compone de areniscas y limolitas que descansan en discordancia angular sobre el miembro inferior. La cima de la Formación Nazas subyace en discordancia angular a la Formación La Joya, y ésta pasa a su vez en transición hacia la Formación La Gloria (Oxfordiano).Las formaciones Gran Tesoro y Nazas forman parte de una secuencia sedimentaria (strictus sensus), limitada en su cima por una discordancia angular, similar a otras secciones estratigráficas de edad Triásico Superior y Jurásico Inferior observadas en México, secciones que han sido deformadas por un evento tectónico poco estudiado; sin embargo, el análisis regional de las relaciones estratigráficas de estas secciones sedimentarias en dicho intervalo geológico, nos conduce a proponer el nombre de Tectogenia Americana, para una deformación post-paleozoica y pre-Oxfordiano, independiente del lapso temporal de las orogenias Nevadiana y Laramide, ambas más jóvenes en edad.Palabras clave: Gran Tesoro, Nazas, Triásico Superior -Jurásico Inferior, Tectogenia Americana, México. Abstract This article is an integration and interpretation of data that has the objectives to formally redefine the Gran Tesoro

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Tectonic setting of pre-Oxfordian units from central and northeastern Mexico: A review

Cited by 21 publications

References 0 publications

Late Triassic stratigraphy and facies from northeastern Mexico: Tectonic setting and provenance

Late Triassic stratigraphy and facies from northeastern Mexico: Tectonic setting and provenance

Provenance of Upper Cretaceous-Paleogene sandstones in the foreland basin system of the Sierra Madre Oriental, northeastern Mexico, and its bearing on fluvial dispersal systems of the Mexican Laramide Province

Las formaciones Gran Tesoro y Nazas: evolución de las secuencias Triásico Superior-Jurásico Inferior en México y su significado tectogenético

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