Geochemical and isotopic profile of Pico de Orizaba (Citlaltépetl) volcano, Mexico: Insights for magma generation processes

Schaaf, Peter; Carrasco-Núñez, Gerardo

doi:10.1016/j.jvolgeores.2010.02.016

Cited by 23 publications

(6 citation statements)

References 31 publications

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“…The range and average concentrations recorded here for Cu and Pb in terrigenous surface sediments of the ICSV (both total and bioavailable) are lower than: (1) records for marine terrigenous sediments from the southern Gulf of Mexico (Table III) concentrations reported for the igneous parental rocks in the upper basin of the Jamapa River (Cu = 14.1 µg/g; Pb = 9.5 µg/g) (Schaaf and Carrasco-Núñez 2010). Hence, it is clear that the ICSV should not be considered to be polluted by these elements like the Jamapa River (Cabral-Tena et al 2019), an important source of trace metals to the ICSV.…”

Section: Environmental Quality Of the Icsvcontrasting

confidence: 72%

“…Average total concentrations of Cu (4.96 ± 3.7 µg/g) and Pb (5.67 ± 3.6 µg/g) in sediments of the ICSV were lower than those reported for other inner shelf areas which are subjected to river influence in the southern Gulf of Mexico (Table III). The average total concentrations of Cu (10.2 µg/g) and Pb (5.0 µg/g) in the fluvial sediments of the Jamapa River's outlet (Cabral-Tena et al 2019) were lower than those in parental igneous rocks (Cu: 14.1 µg/g; Pb: 9.5 µg/g) from the upper basin of the Jamapa River (Schaaf and Carrasco-Núñez 2010). General averages in the bioavailable fraction were 0.21 ± 0.3 µg/g for Cu and 0.24 ± 0.3 µg/g for Pb; these were an order of magnitude lower than average total concentrations.…”

Section: Trace Metal Concentrationsmentioning

confidence: 79%

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Bioavailable and Total Copper and Lead in Terrigenous Sediments in the Inner Continental Shelf Off Veracruz, Southern Gulf of Mexico

Horta‐Puga

Cabral-Tena²,

Córdova

et al. 2021

RICA

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The inner continental shelf adjacent to the city and port of Veracruz (ICSV) in the southern Gulf of Mexico, which is influenced by the Jamapa River, has been considered to be polluted. Moderate to high Cu and Pb concentrations have previously been reported in the shelf’s terrigenous sediments. These elements are derived from deposition of materials from mainland sources via river transport and may threaten marine life in the coastal area. Because Cu and Pb bioavailability has not been previously assessed in the region, the aim of this study was to determine (i) bioavailability and total concentrations of these elements in the terrigenous sediments of the ICSV, (ii) if concentrations of these elements in sediments are associated with distances from primary sources, and (iii) if concentrations differ during dry and rainy seasons. Bioavailable general average concentrations were 0.21 µg/g for Cu, and 0.24 µg/g for Pb, which accounted for 4.4-4.9 % of the total content. The bioavailable concentrations were higher during the rainy season, and in the fluvial plume of the Jamapa River. The total content of Cu and Pb was significantly associated with fine sediments and exhibited high concentrations in the new port facilities area. Hence, it is concluded that the Jamapa River is a primary source of trace metals to the ICSV. Finally, as concentrations of trace metals are lower than previous records for sediments in the southern Gulf of Mexico and lower than background levels and maximum permissible limits, the ICSV is presently not contaminated by Cu or Pb.

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Section: Environmental Quality Of the Icsvcontrasting

confidence: 72%

Section: Trace Metal Concentrationsmentioning

confidence: 79%

Bioavailable and Total Copper and Lead in Terrigenous Sediments in the Inner Continental Shelf Off Veracruz, Southern Gulf of Mexico

Horta‐Puga

Cabral-Tena²,

Córdova

et al. 2021

RICA

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“…The volcano has been constructed in three phases according to Carrasco-Núñez et al (1997) and Carrasco-Núñez (2000) on an upper Cretaceous and lower Paleozoic basement (Schaaf and Carrasco-Núñez, 2010), including two Pleistocene cones, and then superimposed modern mainly Holocene Citlaltépetl cone. The three stages relate directly to individual cone-constructing phases and the subsequent destruction of the first two cones by flank collapse and massive avalanche/lahar generation (e.g., Hoskuldsson and Robin, 1993).…”

Section: Previous Mass Movement and Flow Eventsmentioning

confidence: 99%

Reconstruction of the Upper Slope Conditions of an Extraordinary Hydro-Meteorological Event Along the Jamapa Glacier Drainage System, Citlaltépetl (Pico de Orizaba) Volcano, Mexico

et al. 2021

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A singular precipitation event on the summit glacial slopes of Mexico’s highest volcanic peak, Citlatépetl (also known as Pico de Orizaba), associated with the passage of Hurricane Ernesto across the southern Mexico mainland in August 2012, resulted in a debris flow at altitudes above 4,400 m asl, culminating in a hyperconcentrated flow downstream that had major impacts to a river valley’s channel morphology as well as to communities along a 25 km runout. The lahar originated at the terminal moraine and proglacial ramp of the Little Ice Age (LIA) extent of Citlaltépetl’s Jamapa glacier. Precipitation amounts were estimated based on nearby CONAGUA stations, but also on TRMM satellite images leading to an estimated 106 mm for a 3 day total, with 85 mm (80% of the total) falling on August 9th, the date when the lahar event occurred. The initial debris flow removed a minimum estimated 60,000 m3 of material from the proglacial ramp. A possible causative scenario is that the precipitation event overpressured the groundwater hydrology of an already unstable glacial-melt-saturated moraine. We demonstrate a methodology for the recreation of a pre-event landscape and the environmental conditions at the onset of the lahar, utilizing satellite products, in-situ geomorphological and geological evidence, and UAS technology.

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“…Popocatépetl volcano and its precursory structure El Ventorrillo were built over about 310 ka and dominantly erupted andesitic magmas (Schaaf et al, 2005;Sosa-Ceballos et al, 2015;Mangler et al, 2019), which are on average more evolved compared to the Colima Volcanic Complex (Figure 15). Citlaltépetl volcano (i.e., Pico de Orizaba) in the eastern TMVB shows a less well defined compositional mode in the andesite to dacite spectrum which defines the bulk of the volcano, but has generally produced a range of geochemical diversity from basalt to rhyolite compositions in its about 500 ka history (Schaaf and Carrasco-Núñez, 2010). Given lifetimes of several hundred thousand years or longer, the compositional distributions reflect the long-term behavior of these systems.…”

Section: Petrologic Modes Of Mexican Stratovolcanoesmentioning

confidence: 99%

“…In this contribution, we focus on systems producing a restricted range of geochemical compositions, intermediate in silica content (here defined as 55-68 wt% SiO 2 ). While stratovolcanoes in continental arc settings, such as the Trans Mexican Volcanic Belt (TMVB; Figure 1), are often compositionally monotonous, differences exist in the mode of erupted compositions (Schaaf et al, 2005;Schaaf and Carrasco-Núñez, 2010;Torres-Orozco et al, 2017;Crummy et al, 2019). The reasons why some volcanoes preferentially erupt andesite (e.g., Popocatépetl;Schaaf et al, 2005) and others repeatedly produce dacite (e.g., Nevado de Toluca; Torres-Orozco et al, 2017) remains unclear.…”

Section: Introductionmentioning

confidence: 99%

The Long-Term Life-Cycle of Nevado de Toluca Volcano (Mexico): Insights Into the Origin of Petrologic Modes

2020

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The petrologic diversity of volcanic rocks reflects the dynamics of magma reservoirs and the temporal evolution of magma chemistry can provide valuable information for hazard assessment. While some stratovolcanoes monotonously produce intermediate magmas (55-68 wt% SiO 2), dominantly erupted magma types (e.g., basaltic andesite, andesite or dacite) frequently differ even between neighboring volcanoes. If such differences arise due to thermal maturation processes over time or are predetermined by other properties of magmatic systems remains poorly understood. This study helps to elucidate the underlying factors modulating the chemistry of the magma preferentially erupted by Nevado de Toluca volcano in Central Mexico. We present a new dataset of bulk-rock and mineral chemistry spanning the entire 1.5 Million years of the volcanos' eruptive history. The results reveal that Nevado de Toluca dacites and minor andesite originate in a stable configuration of pre-eruptive processes and plumbing system architecture by hybridization between an upper crustal silicic mush and deeper sourced basaltic andesite magmas. Yet, a subtle trend toward increasing silica content with time (2 wt% in 1.5 Ma) and episodicity in magma hybridization conditions are observed. We use thermal simulations of pulsed magma injection to probe the controlling variables on the temporal variation and compositional mode of magma geochemistry. The results show that the subtle temporal trend toward increasing bulk-rock SiO 2 content is plausibly explained by slightly dropping recharge rates and continued upper crustal reservoir growth. Our modeling also shows that the dominant composition of eruptible magmas ("petrologic mode") can shift as a function of magma flux, extrusive:intrusive ratio and temperature of the recharge magma. A comparison of SiO 2 whole rock distributions for monotonous Mexican stratovolcanoes and their peripheral cones shows that their petrologic modes vary in concert, indicating that the recharge magma chemistry or temperature is a major control on the preferentially erupted magma composition for these volcanoes.

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Geochemical and isotopic profile of Pico de Orizaba (Citlaltépetl) volcano, Mexico: Insights for magma generation processes

Cited by 23 publications

References 31 publications

Bioavailable and Total Copper and Lead in Terrigenous Sediments in the Inner Continental Shelf Off Veracruz, Southern Gulf of Mexico

Bioavailable and Total Copper and Lead in Terrigenous Sediments in the Inner Continental Shelf Off Veracruz, Southern Gulf of Mexico

Reconstruction of the Upper Slope Conditions of an Extraordinary Hydro-Meteorological Event Along the Jamapa Glacier Drainage System, Citlaltépetl (Pico de Orizaba) Volcano, Mexico

The Long-Term Life-Cycle of Nevado de Toluca Volcano (Mexico): Insights Into the Origin of Petrologic Modes

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