Dynamical properties of water relaxations at a gradational lithological contact between different types of porous sedimentary rocks

Suárez, N.; Aldana, Milagrosa; Costanzo-Alvarez, V.; Mendoza, Jorge S.

doi:10.1016/s0022-3093(03)00470-8

Cited by 3 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They have found that the water adsorption in the micropore structure of ACFs is influenced by the micropore size distribution. Suárez et al (2003) have also studied the dynamical properties of water relaxation in porous rock samples. They have found that the TSDC temperature polarization spectra ranging from 100 to 300K, were associated to water clusters confined into the pores.…”

Section: Resultsmentioning

confidence: 99%

“…This technique is also particularly suited to materials having a polar character, such as pore and adsorbed water, polar organics, bio-objects, etc. (Suárez et al 2003. Integration of NRM and TSDC data has been previously used as an alternative stratigraphic tool to characterize lithologies .…”

Section: Rock Magnetic Dielectric and Petrographic Experimentsmentioning

confidence: 99%

“…magnetic and dielectric) albeit similar process of polarization and thermal relaxation to equilibrium, were combined. The depolarization spectrum obtained in a TSDC experiment is composed of electrical current peaks produced by the relaxation process of dipolar entities with different characteristics or heterogeneities (Suárez et al, 2003). One of the advantages of this technique is its high sensitivity, leading to the detection of very low electrical dipole concentrations, and its very low equivalent frequency (~ 10 3 Hz), allowing multicomponent peaks to be resolved accurately.…”

Section: Rock Magnetic Dielectric and Petrographic Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Rock magnetic, petrographic and dielectric characterization of prehistoric Amerindian potsherds from Venezuela

et al. 2011

View full text Add to dashboard Cite

Rock magnetic, petrographic and dielectric analyses were carried out, in a number of archeological ceramic potsherds, in order to characterize the different manufacturing techniques used by Prehistoric Venezuelan Amerindian potters. Samples were excavated in 7 Venezuelan islands and ascribed to distinct cultural groups on purely stylistic grounds (i.e. Valencioide, Ocumaroide, Dabajuroide and Unknown). Mean coercivity values were determined through a direct signal analyses (DSA) applied to isothermal remanent magnetization (IRM) acquisition curves. Logarithmic plots of these mean coercivities are the best quantitative means to classify diverse ceramics. The mean coercivity values seem to group the samples according to the manufacturing development. These values also seem to discriminate the samples provenance, indeed, this plot displays a good grouping of data for samples presumably manufactured by the same culture but excavated at different locations. Thermomagnetic cycles supply helpful information about original ceramic firing conditions. The irreversibility parameter (IP) for thermomagnetic curves (heating and cooling), serves as an indicator of the amount of organic matter burnt during original pottery firing. The IP for a number of pottery samples from Venezuelan islands and mainland, with ages ranging between 300 BC to 1500 AD, might suggest a possible increasing trend in time towards the complete reversibility line of IP = 0. Most samples, independently of age and cultural group, have IP values that suggest that most open fires, used by primitive Venezuelan Amerindian potters, had enough ventilation and oxidizing atmospheres. A scatter plot of maximum current depolarization temperatures versus natural remanent magnetization (NRM) suggests a complex non-linear relationship between these two parameters most likely due to the fact that both, dielectric and rock magnetic data, are linked to pore-related features. Continuation of LATINMAG Special Issue #4, Stud. Geophys. Geod., 54 (2010) M.A. Rada Torres et al. 718 Stud. Geophys. Geod., 55 (2011)

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Rock Magnetic Dielectric and Petrographic Experimentsmentioning

confidence: 99%

Section: Rock Magnetic Dielectric and Petrographic Experimentsmentioning

confidence: 99%

See 1 more Smart Citation

Rock magnetic, petrographic and dielectric characterization of prehistoric Amerindian potsherds from Venezuela

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Such characterizations have also proved useful in identifying lithological discontinuities and paleoenviron- mental changes (e.g. Costanzo-Alvarez et al, 1999Suárez et al, 2003). Archeometric studies in Venezuela are rather incipient.…”

Section: Introductionmentioning

confidence: 99%

“…This scatter plot suggests the grouping of two major clusters of data that correlate the maximum current depolarization temperatures (as well as average activation energies) with SIRM intersection values. Suárez et al (2003) have previously demonstrated, for a number of sedimentary rocks, that TSDC high temperature polarization spectra (300 K) are independent of chemical compositions. Instead, they seem to respond adequately to petrophysical characteristic of the material such as pore radius.…”

mentioning

confidence: 98%

Preliminary dielectric and rock magnetic results for a set of prehistoric Amerindian pottery samples from different Venezuelan Islands

et al. 2006

View full text Add to dashboard Cite

Potsherds from 7 Venezuelan islands have been studied using a two-fold magneto/dielectric technique in order to identify clay sources and characterize different stages of pottery craftsmanship. This is the first study of archeological material using this technique. Petrographic analyses appear to agree with the clusters of data identified in scatter plots of initial magnetic susceptibility versus saturation isothermal remanent magnetization (SIRM), and natural remanent magnetization (NRM). Thus, these magnetic parameters appear to be suitable for describing clay source characteristics. Effective magnetic grain sizes, investigated via stability analyses of SIRM and anystheretic remanent magnetization (ARM) upon alternating field (AF) demagnetization, and SIRM acquisition and AF demagnetization crossover plots, seem to be related to different steps of pottery craftsmanship, namely clay preparation, finishing and firing. Thermomagnetic curves might also provide valuable information about original firing conditions. A scatter plot of SIRMs intersections versus maximum current depolarization temperatures and average activation energies, shows a coarse correlation due perhaps to the fact that these rock magnetic and dielectric data are both associated to pore-related features.

show abstract

TSDC spectroscopy of relaxational and interfacial phenomena

Gun'ko

Zarko

Goncharuk

et al. 2007

Advances in Colloid and Interface Science

134

167

View full text Add to dashboard Cite

Dynamical properties of water relaxations at a gradational lithological contact between different types of porous sedimentary rocks

Cited by 3 publications

References 18 publications

Rock magnetic, petrographic and dielectric characterization of prehistoric Amerindian potsherds from Venezuela

Rock magnetic, petrographic and dielectric characterization of prehistoric Amerindian potsherds from Venezuela

Preliminary dielectric and rock magnetic results for a set of prehistoric Amerindian pottery samples from different Venezuelan Islands

TSDC spectroscopy of relaxational and interfacial phenomena

Contact Info

Product

Resources

About