Results 281 to 290 of about 631,018 (337)

Identification and zonation of deep-seated toppling deformation in a metamorphic rock slope

Bulletin of Engineering Geology and the Environment, 2020
Wei-hua Zhao, Chengqiang Zhang, Neng-pan Ju   +2 more
semanticscholar   +1 more source

Origin of Metamorphic Rocks

Nature, 1954
The Origin of Metamorphic and Metasomatic Rocks A Treatise on Recrystallization and Replacement in the Earth's Crust. By Prof. Hans Ramberg. Pp. xvii + 317. (Chicago: University of Chicago Press; London: Cambridge University Press, 1952.) 75s. net.
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Metamorphism of Quartzofeldspathic Rocks

2011
Metamorphosed quartzofeldspathic rocks are derived from graywacke sandstone and siltstone (clastic sediments; Table 2.3), and granitoid protoliths such as granite, alkali-feldspar granite, granodiorite and tonalite (Table 2.3). They constitute the largest portion of the continental crust.
Rodney Grapes, Kurt Bucher
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DENSITIES OF METAMORPHIC ROCKS

GEOPHYSICS, 1971
Although metamorphic rocks comprise a large part of the crystalline crust, relatively few data concerning metamorphic rock densities are available. In this paper, we present rock densities from seven different metamorphic terrains. Mean densities for rock types range from [Formula: see text] for biotite granite gneiss to [Formula: see text] for ...
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The Laurentian rocks and metamorphism

Transactions of the Edinburgh Geological Society, 1885
In the early days of geology, as geologists are aware, granite and the associated highly metamorphic rocks were called ‶Primary Rocks,″ as from their position they were supposed to be the oldest rocks. This misnomer, in the early days of geology, was not an unnatural one, as these early observers supposed that strata accumulated by a process very ...
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Metamorphism and metamorphic rocks [PDF]

, 2012
Jochen Bundschuh, Guillermo E. Alvarado
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A classification of metamorphic rocks

Geological Society of America Bulletin, 1917
Introduction The purpose of this paper is to present a comprehensive classification of metamorphic rocks, the attempt being made to work out a satisfactory scheme without the introduction of new terms. In this proposed classification the main principles are based on (1) origin of the rocks, (2) rock structure, and (3) composition.
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Metamorphic Rock

Encyclopedic Dictionary of Archaeology, 2019
J. Martelat
semanticscholar   +1 more source

Metamorphic Rock Classification

Dictionary of Geotourism, 2019

semanticscholar   +1 more source

Reactions in Metamorphic Rocks

1976
Some metamorphic reactions have been mentioned as examples of principles discussed in Chapter 2. Here I want to talk about (1) attempts to recognise realistic reactions from microstructural and electron micro-probe investigations of metamorphic rocks, and (2) attempts to relate observation and experiment on metamorphic reactions and phase equilibria. I
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