The Triassic Timescale

Front Cover
Spencer G. Lucas
Geological Society of London, 2010 - Science - 514 pages
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The Mesozoic Era begins with the approximately 50-million-year-long Triassic Period, a major juncture in Earth history when the vast Pangaean supercontinent completed its assembly and began its fragmentation, and the global biota diversified and modern-ized after the end-Permian mass extinction, the most extensive biotic decimation of the Phanerozoic. The temporal ordering of geological and biotic events during Triassic time thus is critical to the interpretation of some unique and pivotal events in Earth his-tory. This temporal ordering is mostly based on the Triassic time-scale, which has been developed and refined for nearly two centu-ries. This book reviews the state of the art of the Triassic timescale and includes comprehensive analyses of Triassic radio-isotopic ages, magnetostratigraphy, isotope-based and cyclostratigraphic correlations and timescale -relevant marine and non-marine bio-stratigraphy.
  

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Contents

an introduction
1
history and status
17
new constraints
41
W MUTTONI G The geomagnetic polarity timescale for the
61
H The Triassic isotope record
103
a critical examination
119
J Triassic conodonts and their role in stage boundary definition
139
Carter E S Gorican S Dumitrica P Triassic radiolarian
163
Lucas S G Jenks J F Spielmann J A Triassic ammonoid
221
Kurschner W M Waldemaar Herngreen G F Triassic palynology of central and
263
a review
285
Kozur H W Weems R E The biostratigraphic importance of conchostracans in the
315
Klein H Lucas S G Tetrapod footprints their use in biostratigraphy and biochronology
419
LUCAS S G The Triassic timescale based on nonmarine tetrapod biostratigraphy and
447
Index
501
Copyright

A Biochronology of Triassic bivalves
201

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