GSA Bookstore

Table of Contents - Special Paper 440

When Did Plate Tectonics Begin on Planet Earth?

edited by Kent C. Condie and Victoria Pease

Preface Kent C. Condie and Victoria Pease		v
Isotopic and geochemical constraints
1.	A review of the isotopic and trace element evidence for mantle and crustal processes in the Hadean and Archean: Implications for the onset of plate tectonic subduction Steven B. Shirey, Balz S. Kamber, Martin J. Whitehouse, Paul A. Mueller, and Asish R. Basu	1
2.	A trace element perspective on Archean crust formation and on the presence or absence of Archean subduction Stephen Foley	31
3.	An overview of the lithological and geochemical characteristics of the Mesoarchean (ca. 3075 Ma) Ivisaartoq greenstone belt, southern West Greenland Ali Polat, Robert Frei, Peter W.U. Appel, Brian Fryer, Yιldιrιm Dilek, and Juan C. OrdóñezCalderón	51
4.	Stratigraphy, geochemistry, and depositional environments of Mesoarchean sedimentary units in western Superior Province: Implications for generation of early crust Philip Fralick, Pete Hollings, and David King	77
Constraints from metamorphism and mineralization
5.	Characteristic thermal regimes of plate tectonics and their metamorphic imprint throughout Earth history: When did Earth first adopt a plate tectonics mode of behavior? Michael Brown	97
6.	Evidence for modern-style subduction to 3.1 Ga: A plateau–adakite–gold (diamond) association D.A. Wyman, C. O’Neill, and J.A. Ayer	129
Mantle geodynamic constraints
7.	Effects of a warmer mantle on the characteristics of Archean passive margins Andrew Hynes	149
8.	Tectonics of early Earth: Some geodynamic considerations Jeroen van Hunen, Peter E. van Keken, Andrew Hynes, and Geoffrey F. Davies	157
Crustal geodynamic and geophysical constraints
9.	The Late Archean Abitibi-Opatica terrane, Superior Province: A modified oceanic plateau Keith Benn and Jean-François Moyen	173
10.	When did plate tectonics begin? Evidence from the orogenic record Victoria Pease, John Percival, Hugh Smithies, Gary Stevens, and Martin Van Kranendonk	199
11.	Seismic images of Paleoproterozoic microplate boundaries in the Fennoscandian Shield Annakaisa Korja and Pekka J. Heikkinen	229
12.	Plate tectonics on early Earth? Weighing the paleomagnetic evidence David A.D. Evans and Sergei A. Pisarevsky	249
Synthesis
13.	Modern-style plate tectonics began in Neoproterozoic time: An alternative interpretation of EarthÕs tectonic history Robert J. Stern	265
14.	When did plate tectonics begin? Evidence from the geologic record Kent C. Condie and Alfred Kröner	281