Editor: George H. Shaw
The range of conditions and compositions that have been proposed for Earth's early surface and atmosphere is considerable, from highly reducing and rich in organic compounds to essentially as oxidizing as the present. This volume explores that range with a collection of papers presented at a Pardee Symposium at the 2011 GSA Annual Meeting. Primary chapters are accompanied by a commentary and followed by a transcript of the ensuing discussion at the meeting. An interpretive chapter discusses the material presented at the symposium and summarizes at least one perspective of the current status of the field.