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Metamorphosed basalt (metabasalt) creates ortho-amphibolite and other chemically appropriate lithologies create para-amphibolite. Although tremolite is a metamorphic amphibole, it is most commonly derived from highly metamorphosed ultramafic rocks , and thus tremolite-talc schist is not generally considered a variety of amphibolite.
The facies are named after the metamorphic rock formed under those facies conditions from basalt. [79] The particular mineral assemblage is somewhat dependent on the composition of that protolith, so that (for example) the amphibolite facies of a marble will not be identical with the amphibolite facies of a pellite.
Amphibole ()Amphibole (/ ˈ æ m f ə b oʊ l / AM-fə-bohl) is a group of inosilicate minerals, forming prism or needlelike crystals, [1] composed of double chain SiO 4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures.
Natural World was a strand of British wildlife documentary series broadcast on BBC Two and BBC Two HD and regarded by the BBC as its flagship natural history series. [1] It was the longest-running documentary series in its genre on British television, [2] with nearly 500 episodes broadcast since its inception in 1983. [3]
Life in Cold Blood is a BBC nature documentary series written and presented by David Attenborough, first broadcast in the United Kingdom from 4 February 2008 on BBC One. [1]A study of the evolution and habits of amphibians and reptiles, it is the sixth and last of Attenborough's specialised surveys following his major trilogy that began with Life on Earth, hence a ninth part for the eight ...
This assemblage is associated with subduction along the trench and low heat flow. Nearest the arc is a zone of high temperature-low pressure metamorphic conditions characterized by amphibolite to granulite facies mineral assemblages such as aluminosilicates, cordierite, and orthopyroxenes. This assemblage is associated with high heat flow ...
Life on Our Planet is an American television nature documentary series released on Netflix and produced by Amblin Television and Silverback Films. Executive-produced by Steven Spielberg and narrated by Morgan Freeman, the series focuses on the evolutionary history of complex life on Earth. Upon its release, the series received generally mixed ...
Our Planet is a British nature documentary series made for Netflix.The series is narrated by David Attenborough and produced by Silverback Films, led by Alastair Fothergill and Keith Scholey, who also created BBC documentary series Planet Earth, Frozen Planet and The Blue Planet, in collaboration with the conservation charity World Wildlife Fund (WWF).