40Ar/39Ar dating studies of minerals and rocks in various areas in Mexico: USGS/CRM scientific collaboration. Part II

Iriondo, Alexander; Kunk, Michael J.; Winick, Jeffrey; Minerales, Consejo de Recursos

doi:10.3133/ofr20041444

Cited by 19 publications

(8 citation statements)

References 1 publication

(5 reference statements)

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“…A previous age of 15.8 Ma was reported in Iriondo et al (2004) for a basaltic lava in the Conitaca graben, although the geologic context of this sample was not provided. We dated a sample located at 17 km to the southeast near the dam of the El Salto reservoir (Fig.…”

Section: Conitaca Graben and Sierra El Infi Erno Dome Complexmentioning

confidence: 86%

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et al. 2013

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Although Basin and Range-style extension affected large areas of western Mexico after the Late Eocene, most consider that extension in the Gulf of California region began as subduction waned and ended ca. 14-12.5 Ma. A general consensus also exists in considering Early and Middle Miocene volcanism of the Sierra Madre Occidental and Comondú Group as subduction related, whereas volcanism after ca. 12.5 Ma is extension related. Here we present a new regional geologic study of the eastern Gulf of California margin in the states of Nayarit and Sinaloa after the end of subduction, implying that preexisting subduction-modifi ed mantle had now become isolated from melt source regions. Our study shows that rifting across the southern-central Gulf Extensional Province began much earlier than the Late Miocene and provided a fundamental control on the style and composition of volcanism from at least 30 Ma. We envision a sustained period of lithospheric stretching and magmatism during which the pace and breadth of extension changed ca. 20-18 Ma to be narrower, and again after ca. 12.5 Ma, when the kinematics of rifting became more oblique.

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Section: Conitaca Graben and Sierra El Infi Erno Dome Complexmentioning

confidence: 86%

“…Additional sparse K-Ar and 40 Ar ages mostly without geologic context were presented in Damon et al (1979), Solé et al (2007), and Iriondo et al (2003Iriondo et al ( , 2004. However, large areas of the SMO in Sinaloa still lack geochronologic data.…”

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confidence: 98%

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et al. 2013

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“…This area is located within a structural high (the so-called "Teziutlán massif") where the Permian basement [Iriondo et al, 2003] is uplifted along an E-W structure that divides the Veracruz basin to the south from the Tampico-Misantla basin to the north [López-Infanzón, 1991]. The metasedimentary rocks of the basement are disconformably overlain by the marine Mesozoic series of the Sierra Madre Oriental, and by Cenozoic volcanic and intrusive rocks.…”

Section: Geological Setting Of Eastern Trans-mexican Volcanic Beltmentioning

confidence: 99%

The Neogene Veracruz fault: evidences for left-lateral slip along the southern Mexico block

Andreani

Rangin

Martinez‐Reyes

et al. 2008

Bulletin De La Société Géologique De France

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Structural data combined with analysis of satellite images and seismic profiles show that a major left-lateral strike-slip fault affects the Veracruz basin and post-5 Ma volcanic rocks of the Los Tuxtlas volcanic field (LTVF). The main volcanic alignment of the LTVF is located along this fault. Additional structural data collected in the Trans-Mexican volcanic belt (areas of Xalapa, Teziutlán and Huauchinango) show that the shear zone affects Pliocene Trans-Mexican volcanic rocks. Low seismicity associated to faulted Quaternary markers such as alluvial fans, alluvial terraces and volcanoes argue for active faulting in this area. Plio-Quaternary strike-slip faulting in the Veracruz basin and in the eastern Trans-Mexican volcanic belt is important because it connects two important structural provinces: the left-lateral strike-slip faults province to the south and the left-lateral transtensive faulting that affects the central part of the Trans-Mexican volcanic belt. These three active deformation zones constitute the boundary between the southern Mexico block and the North American plate. It is generally assumed that strike-slip faulting along the Trans-Mexican and Central America volcanic arcs is the result of oblique subduction of the Cocos plate under the North American and Caribbean plates. However slip vectors along the Middle America trench are almost perpendicular to the trench. This Neogene sinistral strike-slip motion could be partially driven by the eastward motion of the Caribbean plate rather than by strain partitioning along the oblique Middle America trench subduction zone. La faille néogène de Veracruz : évidences d'un décrochement senestre sur la limite orientale du bloc Sud mexicainMots-clés. -Tectonique, Mexique, Faille de Veracruz, Néogène, Bloc crustal. Résumé. -L'analyse de profils sismiques ainsi que l'analyse d'images satellites et des observations de terrain montrent que le bassin de Veracruz et le volcanisme post 5 Ma du massif de Los Tuxtlas (Mexique) sont affectés par un grand dé-crochement senestre. Des données supplémentaires, collectées dans la partie orientale de l'axe volcanique Trans-Mexicain, montrent que ce décrochement affecte également des roches volcaniques pliocènes entre les villes de Xalapa et Huauchinango. Cette faille est toujours active comme en témoignent la sismicité modérée ainsi que les marqueurs quaternaires (cônes, terrasses alluviales et volcanisme) affectés par la déformation. Le décrochement plio-quaternaire de la région de Veracruz est important car il établit la jonction entre le système Tula-Chapala, transtensif senestre, qui affecte l'axe volcanique Trans-Mexicain et les décrochements également senestres qui affectent la région des Chiapas au sud. Ces trois zones de déformation (système Tula-Chapala, décrochements de Veracruz et des Chiapas) constituent la frontière active entre le bloc Sud Mexicain et la plaque Amérique du Nord. La déformation affectant l'axe volcanique Trans-Mexicain et l'arc volcanique d'Amérique Centrale est généralement interprétée comme...

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“…Their emplacement is attributed to the succession of extensional events during Eocene-Oligocene time (McDowell and Mauger 1994;Ferrari et al 2005 and references therein). In this regional geologic context, the Plomosas-Placer de Guadalupe area includes distinctive geological characteristics, such as Proterozoic to Palaeozoic strata (De Cserna et al 1968;Torres et al 1999), a diverse rock record that includes Neoproterozoic metamorphic rocks (954.7 ± 4 Ma, Ar-Ar in hornblende, Iriondo et al 2004;Mauger et al 1983), and Palaeozoic calcareous and siliciclastic sedimentary formations. The uplift is also characterized by westward-vergent thrust faults which verge in the opposite direction of the typical Laramide deformation structures (Bridges 1962;Hennings 1994;Goodell and Feinstein 2008).…”

Section: Geological Settingmentioning

confidence: 99%