Emplacement temperature resolution and age determination of Cerro Colorado tuff ring by paleomagnetic analysis, El Pinacate Volcanic Field, Sonora, Mexico

Alva‐Valdivia, Luis M.; Rodríguez-Trejo, A.; Vidal-Solano, Jesús Roberto; Paz-Moreno, Francisco A.; Agarwal, Amar

doi:10.1016/j.jvolgeores.2018.11.012

Cited by 13 publications

(8 citation statements)

References 35 publications

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“…This high-coercivity phase with T C close to 580°C is found and used in many paleomagnetic studies related to the determination of the emplacement temperature (e.g. Alva-Valdivia et al, 2019;. Hysteresis parameters for most of our investigated pyroclastic deposit types indicate pseudo-single domain behavior with varying magnetization and coercivities (Figure 4 and Figure S1 in Supporting Information S1).…”

Section: Discussionmentioning

confidence: 54%

“…In nearly all samples, component 1 clearly dominates the hysteresis properties and the remanent magnetization (Table S2 in Supporting Information ). This high‐coercivity phase with T C close to 580°C is found and used in many paleomagnetic studies related to the determination of the emplacement temperature (e.g.Alva‐Valdivia et al., 2019; Lerner, Cronin, & Turner, 2019; Lerner, Cronin, Turner, et al., 2019). Hysteresis parameters for most of our investigated pyroclastic deposit types indicate pseudo‐single domain behavior with varying magnetization and coercivities (Figure 4 and Figure S1 in Supporting Information ).…”

Section: Discussionmentioning

confidence: 89%

“…While the first mechanism causes higher oxidation of primarily homogeneous Fe‐Ti oxides (types B and C), the latter is characterized by nonoxidized homogeneous Fe‐Ti oxides (type A). These types A–C are described for pyroclastic deposits worldwide (e.g., Alva‐Valdivia et al., 2019; Lerner, Cronin, & Turner, 2019; Lerner, Cronin, Turner, et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Emplacement temperatures of PDCs can range from cool depositions in lahars or other collapses not primarily related to an eruption (e.g., gravitational collapse triggering mudflows) to temperatures >800°C (e.g., Lerner, Cronin, Turner, et al., 2019). They can be evaluated in several ways like direct measurements of temperature‐depth profiles (e.g., Banks & Hoblitt, 1996), using satellite images (Denniss et al., 1998; Wooster et al., 2000), by studying characteristic features, such as carbonized material, the reflectance of charcoal or bone fragments (Mastrolorenzo et al., 2001; Pensa et al., 2015; Sawada et al., 2000), or indirectly using paleomagnetic techniques (e.g., Alva‐Valdivia et al., 2019; Paterson et al., 2010). Paleomagnetism uses a recorded magnetic signal known as thermoremanent magnetization, and emplacement temperatures of pyroclastic deposits are typically derived from oriented clasts that can originate from the magma chamber (juvenile clasts), from conduit walls (accessory clasts), or be ripped up along the flow path (accidental lithics; Alva‐Valdivia et al., 2019), but also from the ash matrix (e.g., Lerner, Cronin, Turner, et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Taranaki, New Zealand, a hot lava dome collapse is suggested based on paleomagnetic investigations of ash and clasts . Alva-Valdivia et al (2019) have reported three emplacement temperature ranges (320-370°C, 400-460°C, and >500°C) for the phreatomagmatic Cerro Colorado tephra deposits, Mexico, and many of their κ(T) curves show significant nonreversible behavior, which may indicate different thermal profiles due to stratigraphic variation of titanomagnetite within the PDC deposit (Bowles et al, 2018). Nonreversibility may be due to maghemitization (Oliva-Urcia et al, 2011), high-temperature nonstoichiometry (Brachfeld & Hammer, 2006), cation ordering processes below the titanomagnetite binary solvus (Jackson & Bowles, 2014), or vacancy-enhanced nanoscale chemical clustering in the octahedral sublattice (Bowles et al, 2019).…”

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confidence: 99%

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Curie Temperatures and Emplacement Conditions of Pyroclastic Deposits From Popocatépetl Volcano, Mexico

Dudzisz

Kontny

Alva‐Valdivia

2022

Geochem Geophys Geosyst

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Pyroclastic density currents (PDCs) represent one of the most dangerous natural hazards on Earth, and stratovolcanoes like Unzen in Japan, Mt. St. Helens in USA, and Popocatépetl in Mexico give examples of devastating events in the last millennia (e.g., Christiansen & Peterson, 1981;Siebe et al., 1996;Yamamoto et al., 1993). They originate from volcanic eruptions when mixtures of hot gases and fragmental particles (ash, lapilli, blocks, and boulders) become buoyant and move laterally (Cole et al., 2015;Lube et al., 2020). PDCs are density-stratified flows composed of a basal dense granular flow and an over-riding dilute ash cloud. The term block-and-ash flow is often used for the basal dense granular flow (e.g., Pensa et al., 2019). Given the great destructiveness posed by PDCs, the understanding of their formation mechanism and behavior is important for hazard prediction. PDCs can be characterized by multiphase flow transport regimes and gas-particle interactions, spanning from fast and high-energy surges to slow and dense flows, which produce a wide variety of deposit characteristics (e.g., Lerner et al., 2022). The Plinian eruption, for example, occurs in pulses that mostly start with minor ash falls and ash flows and reach their peak with the deposition of pumice falls, the emplacement of hot ash flows, and finally extensive mudflows (e.g., Siebe et al., 1996). Since 1994, the observed reawakening of the Popocatépetl volcano causes a threat to nearby populations as huge emissions of ash and fumarolic gases (Love et al., 1998) together with subsequent episodes of rapid dome growth at the summit crater were reported (e.g.,

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Section: Discussionmentioning

confidence: 54%