Elizabeth McClelland - Academia.edu (original) (raw)
A former Earth Scientist, turned education researcher, now retired.
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espanolEn el presente trabajo se estudia la anisotropia de la susceptibilidad magnetica (ASM) en ... more espanolEn el presente trabajo se estudia la anisotropia de la susceptibilidad magnetica (ASM) en varias localidades del margen sudpirenaico. En rocas no deformadas la fabrica magnetica se interpreta como una fabrica sedimentaria que presenta una foliacion paralela a la estratificacion y los ejes kmax agrupados en una direccion preferente que representa la direccion de la paleocorriente. En rocas deformadas el elipsoide asociado a la ASM puede asemejar al elipsoide de deformacion atendiendo al grado de deformacion y a la relacion angular entre fabrica tectonica y fabrica sedimentaria previa. Se evalua tambien la importancia de la contribucion de la fase dia-paramagnetica en la fabrica magnetica en rocas con baja susceptibilidad media. EnglishThe magnetic susceptibility anisotropy of severa! deformed and weakly to non-deformed rocks from the southern Pyrenees has been studied. Shape and orientation of the sUsceptibility anisotropy ellipsoid from nondeformed rocks is related to a sedimentary fabric with magnetic foliation parallel to bedding and magnetic lineation (kmax axes) mostly parallel to the flow direction. This is demonstrated by consistency with standard sedimentological palaeoflow determinations in a detritic unit from the Oliana area. The magnetic fabric from sorne deformed rocks enables the time relationship between the magnetic fabric generation and folding to be determined. In one instance principal directions of the magnitude ellipsoid of susceptibility show orientations consistent with the kinematic fold axes. Another example shows a tectonic fabric which postdates folding. A third case allows the kinematic interpretation of "joint" development to be made. The interference of tectonic and sedimentary fabrics in weakly deformed rocks is evaluated. Moreover, the importance of the paramagnetic phase contribution to the_ magnetic fabric in rocks with low bulk susceptibility (K) is also considered.
Geophysical Journal International, 2005
Physics of the Earth and Planetary Interiors
Physics of the Earth and Planetary Interiors
ABSTRACT
Improving Schools
When language is processed, brain activity occurs not only in the classic ‘language areas’ such a... more When language is processed, brain activity occurs not only in the classic ‘language areas’ such as Broca’s area, but also in areas which control movement. Our systems of understanding, including higher level cognition, are rooted in bodily awareness which needs to be developed as a precursor to intellectual reasoning. Cognition is embodied, and this concept may offer a radical new way of improving school education by improving children’s systems of physical understanding. A new classroom physical intervention, called Move4words, based on embodied cognition, was developed for pupils aged 7–13 years and trialled with 348 typical pupils in 10 mainstream UK schools. Three pilot controlled trials showed significant improvements in academic performance, particularly for struggling pupils performing in the lowest 20 percent. Effect sizes were large for the lowest achievers: Hedges’ g = 0.86 for national examinations at age 11 (KS2 SATs) and g = 1.24 for progress through National Curriculum...
Primary Teacher Update, 2013
Thrust Tectonics, 1992
ABSTRACT
Thrust Tectonics, 1992
ABSTRACT
The natural remanent magnetism of samples from the sheeted dike complex generated at the Costa Ri... more The natural remanent magnetism of samples from the sheeted dike complex generated at the Costa Rica Rift, drilled in Deep Sea Drilling Project/Ocean Drilling Program Hole 504B, can be resolved into a vertical drilling induced remanent magnetization and a shallow stable remanence by alternating field and thermal demagnetization. We investigate the unblocking temperature and coercivity spectra of these components, and compare these to spectra of thermal, induced, and viscous magnetizations imparted in the laboratory. The drilling-induced remanence is not a simple thermal, induced, or viscous remanence, but probably a piezoremanence acquired in an elevated field. The stable remanence may be a thermal remanence. Comparison of the stable remanence in altered and fresh samples indicates that natural remanent intensity and bulk susceptibility are reduced in more altered samples, but the stability and direction are similar to those in fresh samples. Whereas the stable components of the shee...
Terra Nova, 1996
... These include onland sections on Cyprus where G. margaritae has been found within gypsi-ferou... more ... These include onland sections on Cyprus where G. margaritae has been found within gypsi-ferous clays (Adam, 1976). ... In Late Tortonian time, coarse sediments shed from the evolving mountain belt (Grasso and Pedley, 19881, were ponded in basins in north-central Sicily ...
![Research paper thumbnail of Introduction [to Special Section: Magnetotectonics]](https://attachments.academia-assets.com/72077134/thumbnails/1.jpg)
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Journal of the Geological Society, 1999
ABSTRACT
espanolEn el presente trabajo se estudia la anisotropia de la susceptibilidad magnetica (ASM) en ... more espanolEn el presente trabajo se estudia la anisotropia de la susceptibilidad magnetica (ASM) en varias localidades del margen sudpirenaico. En rocas no deformadas la fabrica magnetica se interpreta como una fabrica sedimentaria que presenta una foliacion paralela a la estratificacion y los ejes kmax agrupados en una direccion preferente que representa la direccion de la paleocorriente. En rocas deformadas el elipsoide asociado a la ASM puede asemejar al elipsoide de deformacion atendiendo al grado de deformacion y a la relacion angular entre fabrica tectonica y fabrica sedimentaria previa. Se evalua tambien la importancia de la contribucion de la fase dia-paramagnetica en la fabrica magnetica en rocas con baja susceptibilidad media. EnglishThe magnetic susceptibility anisotropy of severa! deformed and weakly to non-deformed rocks from the southern Pyrenees has been studied. Shape and orientation of the sUsceptibility anisotropy ellipsoid from nondeformed rocks is related to a sedimentary fabric with magnetic foliation parallel to bedding and magnetic lineation (kmax axes) mostly parallel to the flow direction. This is demonstrated by consistency with standard sedimentological palaeoflow determinations in a detritic unit from the Oliana area. The magnetic fabric from sorne deformed rocks enables the time relationship between the magnetic fabric generation and folding to be determined. In one instance principal directions of the magnitude ellipsoid of susceptibility show orientations consistent with the kinematic fold axes. Another example shows a tectonic fabric which postdates folding. A third case allows the kinematic interpretation of "joint" development to be made. The interference of tectonic and sedimentary fabrics in weakly deformed rocks is evaluated. Moreover, the importance of the paramagnetic phase contribution to the_ magnetic fabric in rocks with low bulk susceptibility (K) is also considered.
Geophysical Journal International, 2005
Physics of the Earth and Planetary Interiors
Physics of the Earth and Planetary Interiors
ABSTRACT
Improving Schools
When language is processed, brain activity occurs not only in the classic ‘language areas’ such a... more When language is processed, brain activity occurs not only in the classic ‘language areas’ such as Broca’s area, but also in areas which control movement. Our systems of understanding, including higher level cognition, are rooted in bodily awareness which needs to be developed as a precursor to intellectual reasoning. Cognition is embodied, and this concept may offer a radical new way of improving school education by improving children’s systems of physical understanding. A new classroom physical intervention, called Move4words, based on embodied cognition, was developed for pupils aged 7–13 years and trialled with 348 typical pupils in 10 mainstream UK schools. Three pilot controlled trials showed significant improvements in academic performance, particularly for struggling pupils performing in the lowest 20 percent. Effect sizes were large for the lowest achievers: Hedges’ g = 0.86 for national examinations at age 11 (KS2 SATs) and g = 1.24 for progress through National Curriculum...
Primary Teacher Update, 2013
Thrust Tectonics, 1992
ABSTRACT
Thrust Tectonics, 1992
ABSTRACT
The natural remanent magnetism of samples from the sheeted dike complex generated at the Costa Ri... more The natural remanent magnetism of samples from the sheeted dike complex generated at the Costa Rica Rift, drilled in Deep Sea Drilling Project/Ocean Drilling Program Hole 504B, can be resolved into a vertical drilling induced remanent magnetization and a shallow stable remanence by alternating field and thermal demagnetization. We investigate the unblocking temperature and coercivity spectra of these components, and compare these to spectra of thermal, induced, and viscous magnetizations imparted in the laboratory. The drilling-induced remanence is not a simple thermal, induced, or viscous remanence, but probably a piezoremanence acquired in an elevated field. The stable remanence may be a thermal remanence. Comparison of the stable remanence in altered and fresh samples indicates that natural remanent intensity and bulk susceptibility are reduced in more altered samples, but the stability and direction are similar to those in fresh samples. Whereas the stable components of the shee...
Terra Nova, 1996
... These include onland sections on Cyprus where G. margaritae has been found within gypsi-ferou... more ... These include onland sections on Cyprus where G. margaritae has been found within gypsi-ferous clays (Adam, 1976). ... In Late Tortonian time, coarse sediments shed from the evolving mountain belt (Grasso and Pedley, 19881, were ponded in basins in north-central Sicily ...
Journal of the Geological Society, 1999
ABSTRACT