CRUSTAL EVOLUTION SESSION AT GSA, BALTIMORE (#T213)
In 1949 J. Tuzo Wilson proposed that continents grew by “marginal accretion”; in 1963, A. E. J. Engel introduced the idea of a continental plate and proposed that much of the Archean record resembled an accumulation of arcs; in 1972, Jakes and White pointed out that arcs were not a compositional match for continents; in 1985, Taylor and McLennan proposed a distinct difference in sediment composition across the Archean-Proterozoic boundary; and now IODP drilling into the IBM arc is testing these and more recent proposals on the arc-continent relationship. For over 60 years, these and many more studies have contributed to the debate on the relationship between arc magmatism (oceanic and marginal) and continental growth. More recently, the debate has been extended to include the role of mantle plumes and LIPS (e.g., Ontong-Java, Iceland, Shatsky, etc.) in the evolution of continental crust. We propose to continue this discussion at the upcoming meeting of the Geological Society of America (1-4 November, Baltimore, MD, USA) in theme session T213:
INTEGRATING PERSPECTIVES ON THE FORMATION, EVOLUTION, AND DESTRUCTION OF CONTINENTAL CRUST: FROM 0 TO 4600 MA
We encourage submissions from all geologists, geochemists, and geophysicists interested in the compositional and structural evolution of continents from the Archean to present.
ABSTRACT DEADLINE AUGUST 11!
For additional information please contact one of the conveners:
Paul Mueller ([log in to unmask])
Pat Bickford ([log in to unmask])
Bob Stern ([log in to unmask])
Maria Magnani ([log in to unmask])
David Snyder ([log in to unmask])
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