Phytoclasts as Indicators of Thermal Metamorphism, Franciscan Assemblage and Great Valley Sequence (Upper Mesozoic), California

1974 ◽  
pp. 1-18 ◽  
Author(s):  
Neely H. Bostick
Keyword(s):  
Thermal Metamorphism ◽  
Great Valley ◽  
Upper Mesozoic

Thermal metamorphism of the Silurian strata of the Oslo region, assessed by conodont colour

1984 ◽  
Vol 121 (4) ◽  
pp. 347-349 ◽  
Author(s):  
R. J. Aldridge
Keyword(s):  
Close Correlation ◽  
The South ◽  
Thermal Metamorphism ◽  
The North ◽  
General Decrease

AbstractThe colours of conodont elements recovered from Silurian limestones in the Oslo region, Norway, range from brown to grey. Samples from the south of the region contain black and grey conodonts, indicative of high palaeotemperatures. There is a general decrease in thermal metamorphism towards the north, with the lowest palaeotemperatures recorded from Toten, Ringsaker and parts of the Ringerike district. There is a close correlation between thermal metamorphism and the proximity of Permian intrusions.

The Granitization Process and its Limitations as Exemplified in Certain Parts of New South Wales

1952 ◽  
Vol 89 (1) ◽  
pp. 25-38 ◽  
Author(s):  
Germaine A. Joplin
Keyword(s):  
Wave Front ◽  
New South ◽  
Regional Metamorphism ◽  
New South Wales ◽  
Compressional Wave ◽  
Thermal Metamorphism ◽  
South Wales ◽  
Strong Compression

AbstractIn an attempt to dissect the granitization process in an area of regional metamorphism, it is suggested that granite is forcibly injected during strong compression, that the compressional wave passes upwards and outwards in advance of the magma, and that several changes take place before its arrival. Six stages in this process are recognized in the Cooma and Albury districts of N.S.W.: (1) Regional Metamorphism, (2) Superimposed Thermal Metamorphism, (3) Permeation without Magmatic Addition, (4) Addition from an Attenuated Magma, (5) Formation of a Potassic Wave-Front, and (6) Injection of the Magma as Concordant Intrusions. The conditions favouring granitization are discussed and the question of basic fronts is considered.

Thermal metamorphism of bitumen in Archean rocks by ultramafic volcanic flows

1992 ◽  
Vol 20 (1-2) ◽  
pp. 165-178 ◽  
Author(s):  
Fariborz Goodarzi ◽  
O.Roger Eckstrand ◽  
Lloyd Snowdon ◽  
Brian Williamson ◽  
Lavern D. Stasiuk
Keyword(s):  
Thermal Metamorphism
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