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Search "Precambrian"
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Precambrian | |
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About 7 pages (2,199 words) in 3 products |
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Encyclopedia and Summary Information
summary from source:
 Precambrian Summary
474 words, approx. 2 pages In geologic time, Precambrian time encompasses the time from Earth's formation, approximately 4.5 billion years ago, until the start of the Cambrian approximately 540 million years ago (mya). Because the Precambrian is not a true geologic eon,... summary from source:
 Precambrian Information
1,607 words, approx. 5 pages
ImageSize = width:175 height:255 PlotArea = left:40 right:5 bottom:45 top:5 AlignBars = early Period = from:0 till:4500 TimeAxis = orientation:vertical ScaleMajor = unit:year increment:500 start:0 ScaleMinor = unit:year increment:100 start:0 Colors... 
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 Journal of the Geological Society Dating the late precambrian volcanicity of England and Wales
05/01/2002: 12,483 words, approx. 42 pages Abstract: Ages for volcanism in the British Late Precambrian have been inferred from interpretations of SHRIMP zircon ages as follows: 559.3 +/- 2.0 Ma for a tuff from the Beacon Hill Formation of the Charnian Supergroup; 566 +/- 3 Ma for a tuff at... summary from source:
Journal of the Geological Society Discussion on dating the Late Precambrian volcanicity of England and Wales
03/01/2003: 2,000 words, approx. 7 pages Jana Horak writes: Whilst new data constraining the evolution of the Avalonian Superterrane in Southern Britain are most welcome, the conclusion that Compston et al. (2002) draw from this data, raise some points that merit comment. Firstly, the conclusion that the new age...
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About 7 pages (2,199 words) in 3 products |
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