Potential thermal expansion of calcitic and dolomitic marbles from Andalusia (Spain)

Luque, Antonio; Leiss, Bernd; Álvarez‐Lloret, Pedro; Cultrone, Giuseppe; Siegesmund, Siegfried; Sebastián, Eduardo; Cardell, Carolina

doi:10.1107/s0021889811036910

Cited by 24 publications

(7 citation statements)

References 40 publications

(40 reference statements)

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“…Table 7 shows that the calcschist and marble contain 98% and 99% fully recrystallized calcite and dolomite minerals, respectively. From the literature it is known that calcite minerals possess relatively high thermal expansion coefficients, parallel to the crystallographic c-axis, of 24-29 × 10 −6 K −1 [42][43][44]. A study aiming at calcitic and dolomitic marbles from Andalusia (Spain) reported averaged linear thermal expansion coefficients, measured between 20-90 • C, of 11 × 10 −6 K −1 for both types of marbles [43].…”

Section: Temperature Effectmentioning

confidence: 99%

“…From the literature it is known that calcite minerals possess relatively high thermal expansion coefficients, parallel to the crystallographic c-axis, of 24-29 × 10 −6 K −1 [42][43][44]. A study aiming at calcitic and dolomitic marbles from Andalusia (Spain) reported averaged linear thermal expansion coefficients, measured between 20-90 • C, of 11 × 10 −6 K −1 for both types of marbles [43]. On average, these are somewhat higher than reported mean expansion coefficients, assessed in a range of 20-100 • C, for sandstones and limestones of 10 and 8 × 10 −6 K −1 , respectively [45].…”

Section: Temperature Effectmentioning

confidence: 99%

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Seismic Velocity Characterisation of Geothermal Reservoir Rocks for CO2 Storage Performance Assessment

et al. 2021

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As part of a seismic monitoring project in a geothermal field, where the feasibility of re-injection and storage of produced CO2 is being investigated, a P- and S-wave seismic velocity characterisation study was carried out. The effect of axial (up to 95 MPa) and radial (up to 60 MPa) stress on the seismic velocity was studied in the laboratory for a broad range of dry sedimentary and metamorphic rocks that make up the Kızıldere geothermal system in Turkey. Thin section texture analyses conducted on the main reservoir formations, i.e., marble and calcschist, confirm the importance of the presence of fractures in the reservoir: 2D permeability increases roughly by a factor 10 when fractures are present. Controlled acoustic-assisted unconfined and confined compressive strength experiments revealed the stress-dependence of seismic velocities related to the several rock formations. For each test performed, a sharp increase in velocity was observed at relatively low absolute stress levels, as a result of the closure of microcracks, yielding an increased mineral-to-mineral contact area, thus velocity. A change in radial stress appeared to have a negligible impact on the resulting P-wave velocity, as long as it exceeds atmospheric pressure. The bulk of the rock formations studied showed reducing P-wave velocities as function of increasing temperature due to thermal expansion of the constituting minerals. This effect was most profound for the marble and calcschist samples investigated.

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Section: Temperature Effectmentioning

confidence: 99%

Section: Temperature Effectmentioning

confidence: 99%

Seismic Velocity Characterisation of Geothermal Reservoir Rocks for CO2 Storage Performance Assessment

et al. 2021

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“…This geological process is associated with another climate process that also contributes to generating such debris by the mechanical breakdown of the rock, promoting brecciation, disintegration, and the formation of dolomitic sands. Frost shattering [ 22 ] and the thermal expansion of these rocks at high temperatures [ 23 ] appear to be the dominant local weathering processes. These features lead to strong edaphical stress and prevent the surrounding vegetation, usually conifer forests, from succession and closure.…”

Section: Definition Of the Dolomite Phenomenonmentioning

confidence: 99%

Plants on Rich-Magnesium Dolomite Barrens: A Global Phenomenon

Poveda

Merlo

Martínez-Hernández

et al. 2021

Biology

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For botanists and ecologists, the close link between some plants and substrates, such as serpentine or gypsum, is well known. However, the relationship between dolomite and its flora has been much less studied, due to various causes. Its diffuse separation from limestone and the use of a vague approach and terminology that, until now, no one has tried to harmonize are among these reasons. After carrying out an extensive review, completed with data on the distribution of plants linked to dolomite, the territories in which this type of flora appears at a global level were mapped using a geographic information system software. In addition, data on soils were collected, as well as on their influence on the ionomic profile of the flora. These data were completed with the authors’ own information from previous research, which also served to assess these communities’ degree of conservation and the genetic diversity of some of their characteristic species. The results showed that the so-called “dolomite phenomenon” is widely represented and is clearly manifested in the appearance of a peculiar flora, very rich in endemisms, on dry soils, poor in nutrients, and with a high Mg level. Although dolomite habitats cause adaptations in plants which are even more recognizable than those of other rock types, they have not been widely studied from an ecological, evolutionary, and conservation point of view because, so far, neither their characteristics nor their universal demarcation have been precisely defined.

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“…In addition to external environmental factors, the material properties of marbles have a significant impact with respect to the decay phenomena (e.g. Weiss 2002a; Zeisig et al 2002;Koch and Siegesmund 2004;Scheffzück et al 2007;Sáez-Pérez and Rodrígue-Gordillo 2009;Luque et al 2011;Shushakova et al 2013;Menningen et al 2018a, b). The weathering of marble is usually a slow geological process, but fast enough for monuments to become damaged in less than a decade.…”

Section: Introductionmentioning

confidence: 99%

The marble sculptures of General Bülow and Scharnhorst in Berlin: comparative, non-destructive analysis of the weathering state after 12 years of exposure

Menningen

Siegesmund

Krompholz³

et al. 2020

Environ Earth Sci

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After almost 200 years of exposure, the monuments of General Scharnhorst and Bülow have been analysed by means of ultrasound. Both sculptures are made of Carrara marble, both sculptures have been exposed to the same environmental influences and both sculptures are, based on the results of the ultrasonic measurements, in alarming conditions. This statement can be made because of the data of three different measurement investigations within the last 12 years. In this short exposure time, the already low velocities have been reduced by 16.2% and 14.7%. The very low average velocity of 2.8 km/s for the sculpture of General Bülow and a slightly higher average velocity of 3.2 km/s for the Scharnhorst sculpture indicate that both sculptures are in a poor condition, even though a protective winter shelter has been used since 2004. Comparing tomographic velocity measurements performed in 2006 with the measurements made in 2018 was possible and showed that even areas with a thickness up to 90 cm show alarming low ultrasonic velocities down to 2.6 km/s. Even if the circumstances for both sculptures have been the same, they differ in their weathering state. The careful and transparent documentation of all measurements was in this context the most important aspect for the comparative studies. Irregularities in their weathering behaviour of the two statues can be distinguished, allowing an in-depth analysis of the deterioration of the marble.

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Potential thermal expansion of calcitic and dolomitic marbles from Andalusia (Spain)

Cited by 24 publications

References 40 publications

Seismic Velocity Characterisation of Geothermal Reservoir Rocks for CO2 Storage Performance Assessment

Seismic Velocity Characterisation of Geothermal Reservoir Rocks for CO2 Storage Performance Assessment

Plants on Rich-Magnesium Dolomite Barrens: A Global Phenomenon

The marble sculptures of General Bülow and Scharnhorst in Berlin: comparative, non-destructive analysis of the weathering state after 12 years of exposure

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