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Manby, G M (1978): Tab. 1 Analyses of major phases in Vestgötabreen formation schists. PANGAEA, https://doi.org/10.1594/PANGAEA.743267, Supplement to: Manby, GM (1978): Aspects of Caledonian metarnorphism in central western Svalbard with particular reference to the Glaucophane schists of Oscar II Land. Polarforschung, 48(1/2), 92-102, hdl:10013/epic.29457.d001

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Abstract:
The glaucophane schists of Oscar II Land, it has been suggested, originated in a compressive plate boundary subduction zone environment. An alternative hypothesis is presented here linking the metamorphism of these schists with that of the surrounding pre-Carboniferous rocks. It has been estimated from mineralogical and textural relationships that at the time of metamorphism these rocks exceeded 30 km in thickness. Similarly, an ambient geothermal gradient of 15° C/km has been calculated for the now exposed succession. Pressures of sufficient magnitude would be realised near the base of this geosynclinal pile to produce eclogite from rocks of basic composition. Subsequent synmetamorphic penetrative deformation would give rise to glaucophane and greenschist facies assemblages.
Coverage:
Latitude: 78.472000 * Longitude: 12.510000
Event(s):
Vestgötabreen (formation) * Latitude: 78.472000 * Longitude: 12.510000 * Location: Oscar II Land, Svalbard * Device: Geological profile sampling (GEOPRO)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1MineralsMineralsManby, G M
2Silicon dioxideSiO2%Manby, G MCambridge E.D.S. electron probe microanalyser
3Titanium oxideTiO2%Manby, G MCambridge E.D.S. electron probe microanalyser
4Aluminium oxideAl2O3%Manby, G MCambridge E.D.S. electron probe microanalyser
5Iron oxide, FeOFeO%Manby, G MCambridge E.D.S. electron probe microanalyser
6Manganese oxideMnO%Manby, G MCambridge E.D.S. electron probe microanalyser
7Magnesium oxideMgO%Manby, G MCambridge E.D.S. electron probe microanalyser
8Calcium oxideCaO%Manby, G MCambridge E.D.S. electron probe microanalyser
9Potassium oxideK2O%Manby, G MCambridge E.D.S. electron probe microanalyser
10Sodium oxideNa2O%Manby, G MCambridge E.D.S. electron probe microanalyser
11Elements, totaltotal%Manby, G MCambridge E.D.S. electron probe microanalyser
Size:
296 data points

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