The limestone blocks had undergone thermal metamorphism.
2.
The thermal metamorphism part of the scheme describes a continuous sequence of changes to mineralogy and texture that accompany increasing metamorphic temperatures.
3.
The geological history of Benton has four stages : chondrule formation and accumulation, brecciation, thermal metamorphism and finally shock vein formation.
4.
Thermal metamorphism of the country rock in the contact zone produced coarse grained marbles within the aureole in a small number of places in Teesdale.
5.
The Red Hill ridge is said by geologists to be an " erosion residual " resulting from thermal metamorphism from a small granite intrusion to the south thereby providing the resistant core of the ridge.
6.
The petrologic-type scheme originated by Van Schmus and Wood is really two separate schemes, one describing aqueous alteration ( types 1 2 ) and one describing thermal metamorphism ( types 3 6 ).
7.
A small, maximally 5 km wide strip just north of the North Pyrenean Fault experienced dynamic and thermal metamorphism during the Albian / Cenomanian about 110 million years ago ( high temperature / low pressure, " HT / LP "-type ).
8.
The degree to which it has been affected by the " secondary " processes of thermal metamorphism and aqueous alteration on the parent asteroid is indicated by its "'petrologic type "', which appears as a number following the group name ( e . g ., an LL5 chondrite belongs to the LL group and has a petrologic type of 5 ).
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