The age and composition of the pre-Cenozoic basement of the Jalisco Block: implications for and relation to the Guerrero composite terrane

Valencia, Víctor A.; Righter, K.; Rosas-Elguera, José; López‐Martínez, Margarita; Grove, Marty

doi:10.1007/s00410-013-0908-z

Cited by 42 publications

(41 citation statements)

References 74 publications

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“…This intrusion is probably related to numerous other Late Cretaceous to Paleocene plutons found in the Jalisco block and lumped together as the Puerto Vallarta batholith . More recent work has shown that these Late Cretaceous to Paleocene diorites and granites range in age from 59 to 92 Ma (Valencia et al, 2013). Field relations constrain the diorite of La Florida to younger than 77 Ma as it intrudes the formation of Juchitlan.…”

Section: Diorite Of La Florida (Cretaceous?-kd)mentioning

confidence: 99%

“…The Jalisco block is the westernmost part of the accreted Guerrero composite terrane and is composed mainly of a late Cretaceous to Paleocene batholith that intruded Jurassic-Cretaceous sedimentary and volcanic rocks (Campa and Coney, 1983;Schaaf et al, 1995;Valencia et al, 2013;Centeno-García et al, 2003Ferrari et al, 2012). These rocks are unconformably overlain by subductionrelated rocks of the Trans-Mexican volcanic belt Valencia et al, 2013). The Jalisco block is bounded by the Middle America Pacifi c Trench to the south and west, by the Tepic-Zacoalco rift on the north, and by the Colima rift on the east.…”

Section: Geologic Settingmentioning

confidence: 99%

“…Age probability diagram for dated volcanic rocks in the Tepic-Zacoalco and Colima grabens. Data from Allan (1986), Moore et al (1994), Nieto-Samaniego et al (1999), Ferrari et al ( , 2013Ferrari et al ( , 2014, Frey et al (2004Frey et al ( , 2007, Centeno-García et al (2011), Valencia et al (2013, Duque-Trujillo et al (2015).…”

Section: Radiometric Datingmentioning

confidence: 99%

“…In the Jalisco block, the Guerrero terrane consists of late Cretaceous to Eocene granitoids (65-90 Ma) that intruded midto late-Jurassic schists (135-161 Ma) covered by Late Cretaceous to Eocene ignimbrites and lavas (Schaaf et al, 1995;Frey et al, 2007;Valencia et al, 2013). The igneous rocks of this terrane have an arc geochemical affi nity (Centeno-García et al, 1993;Valencia et al, 2013).…”

Section: Geologic History Of the Tecolotlan Graben Cretaceous Historymentioning

confidence: 99%

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Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Kowallis¹

2017

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Section: Diorite Of La Florida (Cretaceous?-kd)mentioning

confidence: 99%

Section: Geologic Settingmentioning

confidence: 99%

Section: Radiometric Datingmentioning

confidence: 99%

Section: Geologic History Of the Tecolotlan Graben Cretaceous Historymentioning

confidence: 99%

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Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Kowallis¹

2017

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“…The belt has a composition of intermediate to silicic rocks . The western end of the MVB defines the fault-bounded crustal Jalisco Block (Ferrari et al, 2007;Valencia et al, 2013). The northern and eastern boundaries of this block consist of asymmetric continental rifts formed by tilted blocks with escarpments between 800 and 1000 m (Zárate-del Valle and Simoneit, 2005); the Tepic-Zacoalco Rift to the north runs in an NW-SE direction, and the Colima Rift to the east runs in an N-S direction; these rifts join the E-W-oriented Citala or Chapala Rift in what is known as the Jalisco Triple Junction located 60 km SSW of the city of Guadalajara (Fig.…”

Section: Tectonic Settingsmentioning

confidence: 99%

Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)

Hernández-Antonio

Mahlknecht

Tamez-Meléndez

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract. Groundwater chemistry and isotopic data from 40 production wells in the Atemajac and Toluquilla valleys, located in and around the Guadalajara metropolitan area, were determined to develop a conceptual model of groundwater flow processes and mixing. Stable water isotopes (δ 2 H, δ 18 O) were used to trace hydrological processes and tritium ( 3 H) to evaluate the relative contribution of modern water in samples. Multivariate analysis including cluster analysis and principal component analysis were used to elucidate distribution patterns of constituents and factors controlling groundwater chemistry. Based on this analysis, groundwater was classified into four groups: cold groundwater, hydrothermal groundwater, polluted groundwater and mixed groundwater. Cold groundwater is characterized by low temperature, salinity, and Cl and Na concentrations and is predominantly of Na-HCO 3 -type. It originates as recharge at "La Primavera" caldera and is found predominantly in wells in the upper Atemajac Valley. Hydrothermal groundwater is characterized by high salinity, temperature, Cl, Na and HCO 3 , and the presence of minor elements such as Li, Mn and F. It is a mixed-HCO 3 type found in wells from Toluquilla Valley and represents regional flow circulation through basaltic and andesitic rocks. Polluted groundwater is characterized by elevated nitrate and sulfate concentrations and is usually derived from urban water cycling and subordinately from agricultural return flow. Mixed groundwaters between cold and hydrothermal components are predominantly found in the lower Atemajac Valley. Twenty-seven groundwater samples contain at least a small fraction of modern water. The application of a multivariate mixing model allowed the mixing proportions of hydrothermal fluids, polluted waters and cold groundwater in sampled water to be evaluated. This study will help local water authorities to identify and dimension groundwater contamination, and act accordingly. It may be broadly applicable to other active volcanic systems on Earth.

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Crust and subduction zone structure of Southwestern Mexico

et al. 2015

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Southwestern Mexico is a region of complex active tectonics with subduction of the young Rivera and Cocos plates to the south and widespread magmatism and rifting in the continental interior. Here we use receiver function analysis on data recorded by a 50 station temporary deployment of seismometers known as the MARS (MApping the Rivera Subduction zone) array to investigate crustal structure as well as the nature of the subduction interface near the coast. The array was deployed in the Mexican states of Jalisco, Colima, and Michoacan. Crustal thickness varies from 20 km near the coast to 42 km in the continental interior. The Rivera plate has steeper dip than the Cocos plate and is also deeper along the coast than previous estimates have shown. Inland, there is not a correlation between the thickness of the crust and topography indicating that the high topography in northern Jalisco and Michoacan is likely supported by buoyant mantle. High crustal V p /V s ratios (greater than 1.82) are found beneath the trenchward edge of magmatism including below the Central Jalisco Volcanic Lineament and the Michoacan-Guanajuato Volcanic Field implying a new arc is forming closer to the trench than the Trans Mexican Volcanic Belt. Elsewhere in the region, crustal V p /V s ratios are normal. The subducting Rivera and Cocos plates are marked by a dipping shear wave low-velocity layer. We estimate the thickness of the low-velocity layer to be 3 to 4 km with an unusually high V p /V s ratio of 2.0 to 2.1 and a drop in S velocity of 25%. We postulate that the low-velocity zone is the upper oceanic crust with high pore pressures. The low-velocity zone ends from 45 to 50 km depth and likely marks the basalt to eclogite transition.

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The age and composition of the pre-Cenozoic basement of the Jalisco Block: implications for and relation to the Guerrero composite terrane

Cited by 42 publications

References 74 publications

Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Description of the Geology of the Tecolotlan Graben, Jalisco, Mexico

Groundwater flow processes and mixing in active volcanic systems: the case of Guadalajara (Mexico)

Crust and subduction zone structure of Southwestern Mexico

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