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  • 1975-1979  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Chlorites from Italian granitoid rocks (1976)
    Springer
    Mineralogy and petrology 23 (1976), S. 39-50 
    Details
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Résumé On a fait des analyses chimiques, aux rayons X, optiques, termiques et à la microsonde électronique, de six chlorites, provenant de roches granitiques italiennes, dérivées par action hydrothermale sur des biotites. Les résultats montrent que cinq chlorites sont ripidolites-brunsvigites, du polytype IIb, et donc, de températures élevées. Seulement une est une thuringite, polytype Ib (β=90°), typique de températures basses. La découverte de ce dernièr polytype, jamais cité dans la litérature, en roches granitiques, laisse prévoir la possibilité plus vaste d'employer le polytypisme des chlorites dans l'étude des phénomènes tard-magmatiques.
    Notes: Summary Chemical, X-ray, optical, thermal and microprobe analyses have been carried out on six chlorites from Italian granitoid rocks formed as a result of deuteric action on biotites. The data show that five chlorites, spanning ripidolite-brunsvigite fields, are IIb polytypes and therefore of high temperature origin. Only one sample is a thuringite, Ib (β=90°) polytype, typical of low temperature. The occurrence of this last polytype, never mentioned in the literature from granitoid rocks, suggests a wider possibility for using chlorite polytypism in studying the late magmatic phenomena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01081868
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The volcanic rocks from the Mount Agnello area (Fiemme Valley, Italy): A contribution to the knowledge of the mid-Triassic magmatism of the Southern Alps (1978)
    Springer
    Mineralogy and petrology 25 (1978), S. 131-143 
    Details
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Résumé Sont examinées les volcanites du Trias moyen affleurantes dans l'aire de Mont Agnello (Vallèe de Fiemme, Italie). Les déterminations du chimisme, en particulier celles regardant les éléments en traces (Rb, Sr, Zr, Y, Nb), revèlent pour ce volcanisme une affinité shoshonitique qui est bien associable à une aire de recente orogenèse en voie de stabilisation. On a aussi analysé l'amphibole, present dans ces roches, caracterisé par d'epais bords de réaction et on l'à reconnu comme une pargasite riche en fer. Ces amphiboles ont été retrouvé fréquemment dans des volcanites d'association calcoalcaline et/ou shoshonitique.
    Notes: Summary Middle Triassic volcanic rock outcrops in the Mount Agnello area (Fiemme Valley, Italy) are examined in this study. Chemical analyses based on main and trace elements (Rb, Sr, Zr, Y, Nb) allow this volcanism to be defined as “shoshonitic”. The amphiboles, which occur with thick opacitic rims, were determined as ferroan pargasites. They were often found in volcanites of calcalkaline and/or shoshonitic associations. Consequently, this volcanism can be associated with a newly orogenized area undergoing stabilization. These data support the more recent studies on the mid-Triassic volcanism in the Southern Alps and underline the particular position of this magmatism in the tectonic evolution of this area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01082858
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Angiographic diagnosis of jugular venous system dilatation in children (1979)
    Springer
    Pediatric radiology 8 (1979), S. 247-250 
    Details
    ISSN: 1432-1998
    Keywords: Venous ectasia ; Jugular ; Arteriography ; Venography ; Neck mass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report five children with a soft mass in the neck due to congenital jugular venous ectasia. Three had fusiform dilatation of the internal jugular vein, which in one case was associated with dilatation of the ipselateral external jugular vein. Two children had aneurysmal dilatation of the superficial cervical communicating vein. The first four cases required angiographic studies for final diagnosis. Venography via the femoral vein was most valuable for visualization of the dilated segments of internal jugular veins but failed to show the vascular mass communicating with the superficial vein of the neck. These were best visualized by direct injection of the contrast medium into the vessel. In the fifth case a correct diagnosis was obtained with xeroradiography alone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00974043
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    Paper (German National Licenses)
    Fulltext
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