The effect of pore size on cementation in porous rocks

Putnis, Andrew; Mauthe, G.

doi:10.1046/j.1468-8123.2001.11001.x

Cited by 126 publications

(116 citation statements)

References 20 publications

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“…The volume influence on the effective solubility leads to supersaturation of the phase components in the solution; such an effect has been observed in porous sedimentary rocks (Emmanuel et al 2010, Putnis & Mauthe 2001 and in small pores in migmatites (Holness & Sawyer 2008). Because the solution is supersaturated, high undercooling is needed for crystallization to occur (Bigg 1953, Putnis & Mauthe 2001, Holness & Sawyer 2008.…”

Section: Why Are the Small Droplets More Undercooled?mentioning

confidence: 99%

“…Quartz crystallization in sandstone does not occur in pores smaller than 10 µm (Emmanuel et al 2010). Putnis & Mauthe (2001) argued that supersaturation occurs if pore size is around 1 µm and does not occur for pores larger than 100 µm. Bigg (1953) observed that a water droplet of 10 µm could crystallize at -31 °C, sustaining high undercooling.…”

Section: Why Are the Small Droplets More Undercooled?mentioning

confidence: 99%

See 1 more Smart Citation

Textural Variations in Morb Sulfide Droplets Due to Differences in Crystallization History

Patten¹,

Barnes²,

Mathez³

2012

The Canadian Mineralogist

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Sulfide droplets from fresh Mid-Ocean-Ridge Basalt (MORB) glasses show different textures. Some are fine-grained droplets consist of Monosulfide Solid Solution (Mss) and Intermediate Solid Solution (Iss) micrometric intergrowths with pentlandite at the Mss-Iss interface and disseminated Fe-oxide grains; other droplets display a characteristic "zoned" texture consisting of segregated massive grains of Mss and Iss, with euhedral Fe-oxides and pentlandite occuring as equant grains and as flame-shaped domains in the Mss formed by exsolutions. The difference in the textures implies a difference in the crystallization history of the sulfide droplets. These different textures are observed in droplets that are only millimeters apart in the same sample, and thus had an identical cooling history. Therefore, some other factors controlled the textural development. There is relationship between the size and the texture of the droplets. The larger sulfide droplets tend to have zoned textures and the smaller ones fine-grained textures. We propose that the latter have experienced greater undercooling before crystallization. The reason for the delay in crystallization could be that, in the small sulfide droplets, large stable grains with low surface to volume ratio cannot form, which results in higher effective solubility of the Mss. Due to the high degree of undercooling in the small droplets, there were numerous nucleation sites and the diffusion rates of the crystal components in the liquid were lower, leading to fine-grained Mss-Iss intergrowths. In contrast, larger droplets with lower effective solubility of Mss began to crystallize at higher temperature, and thus had fewer nucleation sites, higher diffusion rates, and more time for sulfide differentiation.

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Section: Why Are the Small Droplets More Undercooled?mentioning

confidence: 99%

Section: Why Are the Small Droplets More Undercooled?mentioning

confidence: 99%

Textural Variations in Morb Sulfide Droplets Due to Differences in Crystallization History

Patten¹,

Barnes²,

Mathez³

2012

The Canadian Mineralogist

View full text Add to dashboard Cite

show abstract

“…In general, equilibrium and nonequilibrium effects favour growth in large pores rather than in small pores. This has been observed for halite cemented sandstones (Putnis and Mauthe, 2001), for quartz cementation between stylolites in sandstone (Emmanuel et al, 2010), for gas hydrate (clathrate) growth in sediments (Rempel, 2011) or during precipitation of weathering products in porous andesite (Section 8.3 and Jamtveit et al, 2011).…”

Section: Pore Size Effectsmentioning

confidence: 83%

Sculpting of Rocks by Reactive Fluids

Jamtveit¹,

Hammer²

2012

Geochem Persp

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“…These salts generate disorders which are studied since the the 19th century (Turner, 1833). The constraints exerted by salts in the course of growth on the walls of the porous network of the rocks (Scherer 2004, Putnis andMauthe, 2001) can in the long term create and/or to widen cracks in the rocks.…”

Section: Fig 4: Damage Salt Develops As Encrustation Coveringmentioning

confidence: 99%