The direction of fluid flow during contact metamorphism of siliceous carbonate rocks: new data for the Monzoni and Predazzo aureoles, northern Italy, and a global review

Ferry, John M.; Wing, Boswell A.; Penniston‐Dorland, Sarah C.; Rumble, Douglas

doi:10.1007/s00410-001-0316-7

Cited by 69 publications

(84 citation statements)

References 46 publications

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“…Darcy velocities, from time-integrated flux based on mineral reactions and stable isotopes studies range from 10 -9 m/s to 10 -11 m/s for contact metamorphism (Ferry et al, 2002). For active regional metamorphism, a Darcy velocity of 10 -11 m/s is considered to be an average value .…”

Section: Velocity Analysis and The Role Of Deformationmentioning

confidence: 99%

“…The predominant direction of flow is commonly inferred from transport theory applied to chemical alteration, stable isotope ratios, progress of mineral reactions and trace element data (Ferry et al, 2002;Cartwright and Buick 1996). The review of Ferry et al (2002) for fluid flow during contact metamorphism shows that direction do not obey to simple generalizations law because the major control is the permeability structure, either inherited from initial layering, or resulting from the coeval deformation (Ferry et al, 1998;Rossetti et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

“…The description of paleo-fluid flow is fundamental for understanding geological processes such as ore deposition (Barnes, 1997), rock deformation (Gratier and Gueydan, 2007), and metamorphism (Ferry et al, 2002). The predominant direction of flow is commonly inferred from transport theory applied to chemical alteration, stable isotope ratios, progress of mineral reactions and trace element data (Ferry et al, 2002;Cartwright and Buick 1996).…”

Section: Introductionmentioning

confidence: 99%

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Estimating the local paleo-fluid flow velocity: New textural method and application to metasomatism

Sizaret

Branquet

Gloaguen

et al. 2009

Earth and Planetary Science Letters

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Estimating the local paleo-fluid flow velocity: New textural method and application to metasomatism. Earth and Planetary Science Letters, Elsevier, 2009, 280 (1-4) Finally, a two-stage tectono-hydrodynamic model is proposed for the metsomatism. The first stage is genetically linked to the sill injection, and the second is characterized by a wider event with hydrothermal flow passing along the leucogranite sills.

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Section: Velocity Analysis and The Role Of Deformationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Estimating the local paleo-fluid flow velocity: New textural method and application to metasomatism

Sizaret

Branquet

Gloaguen

et al. 2009

Earth and Planetary Science Letters

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“…No dolomite ∆47 reordering parameters are yet published, but clumped isotope measurements of dolomite from the Predazzo contact aureole and the Notch Peak aureole (this study) suggest that it should preserve apparent equilibrium temperatures ~100 °C above calcite. Cooling rates for these data are estimated from a thermal model of the Notch Peak aureole developed in section 6.4, and a similar model reflecting the geometry, depth, and sample location in the Predazzo aureole, and uncertainties therein (Ferry et al, 2002). The four key events are 1) peak crystallization, 2) cooling down from peak temperature to the ambient/burial temperature, 3) incubation at ambient temperature, and 4) exhumation to surface.…”

Section: Figure Captionsmentioning

confidence: 99%

Clumped isotope thermometry of calcite and dolomite in a contact metamorphic environment

Lloyd

Eiler

Nábělek

2017

Geochimica et Cosmochimica Acta

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Clumped isotope compositions of slowly-cooled calcite and dolomite marbles record apparent equilibrium temperatures of roughly 150-200 °C and 300-350 °C, respectively. Because clumped isotope compositions are sensitive to the details of T-t path within these intervals, measurements of the ∆47 values of coexisting calcite and dolomite can place new constraints on thermal history of low-grade metamorphic rocks over a large portion of the upper crust (from ~5 to ~15 km depth). We studied the clumped isotope geochemistry of coexisting calcite and dolomite in marbles from the Notch Peak contact metamorphic aureole, Utah. Here, flat-lying limestones were intruded by a pluton, producing a regular, zoned metamorphic aureole. Calcite ∆47 temperatures are uniform, 156 ± 12 ˚C (2σ s.e.), across rocks varying from high-grade marbles that exceeded 500 °C to nominally unmetamorphosed limestones >5 km from the intrusion. This result appears to require that the temperature far from the pluton was close to this value; an ambient temperature just 20 ˚C lower would not have permitted substantial re-equilibration, and should have preserved depositional or early diagenetic ∆47 values several km from the pluton.Combining this result with depth constraints from overlying strata suggests the country rock here had an average regional geotherm of 22.3-27.4 ˚C/km from the late Jurassic Period until at least the middle Paleogene Period. Dolomite ∆47 in all samples above the talc+tremolite-in isograd record apparent equilibrium temperatures of 328 ିଵଶ ାଵଷ °C (1σ s.e.), consistent with the apparent equilibrium blocking temperature we expect for cooling from peak metamorphic conditions. At greater distances, dolomite ∆47 records temperatures of peak (anchi)metamorphism or pre-metamorphic diagenetic conditions. The interface between these domains is the location of the 330 ˚C isotherm associated with intrusion. Multiple-phase clumped isotope measurements are complemented by bulk δ 13 C and δ 18 O dolomite-calcite thermometry. These isotopic exchange thermometers are largely consistent with peak temperatures in all samples within 4 km of the contact, indicating that metamorphic recrystallization can occur even in samples too low-grade to produce growth of conventional metamorphic index minerals (i.e., talc and tremolite). Altogether, this work demonstrates the potential of these methods to quantify the conditions of metamorphism at sub-greenschist facies.

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“…Rock compartments in aureoles are therefore not isochemical. However, the nature of reactive fluid flow in more than 30 carbonate-bearing contact aureoles worldwide has been subject to substantial research summarized in reviews by Ferry and Gerdes (1998), Baumgartner and Valley (2001) and Ferry et al (2002). Actual or possible immiscibility during reactive fluid flow is therefore reviewed in some detail here.…”

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confidence: 99%

Fluid Immiscibility in Metamorphic Rocks

Heinrich

2007

Reviews in Mineralogy and Geochemistry

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INTRODUCTIONEvidence of fluid immiscibility in metamorphic rocks comes, in the best of all worlds, from fluid inclusion observations. In fact, fluid immiscibility should be anticipated over the full range of metamorphic conditions provided that appropriate bulk fluid compositions are present. In a review paper on "Metamorphic fluids: the evidence from fluid inclusions" Crawford and Hollister (1986) summarized: "The role of fluid immiscibility in metamorphism was only recognized after serious study of fluid inclusions in metamorphic rocks was underway in the late 1970s and has yet to attract the attention of more than a handful of petrologists studying metamorphic rocks." Since then, tremendous progress has been made. A huge amount of fluid inclusion studies have convincingly shown that immiscible fluids can be present in rocks of all bulk compositions and at all P-T conditions. Thermodynamic databases of minerals, solid solutions and fluid mixtures along with the development of Gibbs free energy minimization programs now allow for detailed prediction of the evolution of phase assemblages and mineral compositions in P-T space. Significant progress has also been made in understanding reaction kinetics, diffusional and convective mass transport and the interpretation of fluid-rock interaction during metamorphism. Given the vast fluid inclusion evidence of immiscibility it would appear, however, that phase petrology and mass transport in any specific rock where fluids are involved are not correctly interpreted if possible or proven immiscibility is not considered. Relatively few studies directly link mineral reactions with immiscible fluids. Therefore, this review aims at working out the effects of fluid immiscibility on the progress of metamorphic reactions and fluid transport over a wide range of conditions.Questions arise directly from the fluid inclusion record in metamorphic rocks. This chapter, however, is organized the other way round. At first it summarizes phase relations of fluid systems pertinent to metamorphic rocks obtained by laboratory experiments and thermodynamic calculations. It then addresses how calculated mineral 2 reactions are affected by immiscible fluid systems, and how immiscible fluids are produced and evolved when metamorphic mineral reactions proceed. The impure limestone plus H 2 O-CO 2 -salt system is theoretically explored, for which by far the most information is available and which may stand for other fluid-rock systems. A section on the physical behavior of immiscible fluids follows, again mainly based on experimental results. The second part of the paper reviews numerous field examples of contact, regional, and subduction related metamorphic rocks where fluid immiscibility played a significant role during petrogenesis and mass transport. Late events in metamorphic rocks such as formation of hydrothermal systems, late vein formation, ore deposits, etc. where fluid immiscibility and fluid segregation is of paramount importance are not explicitly addressed here. Instead, the review ...

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The direction of fluid flow during contact metamorphism of siliceous carbonate rocks: new data for the Monzoni and Predazzo aureoles, northern Italy, and a global review

Cited by 69 publications

References 46 publications

Estimating the local paleo-fluid flow velocity: New textural method and application to metasomatism

Estimating the local paleo-fluid flow velocity: New textural method and application to metasomatism

Clumped isotope thermometry of calcite and dolomite in a contact metamorphic environment

Fluid Immiscibility in Metamorphic Rocks

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