Advent of Complex Life

John Grotzinger
Institution Massachusetts Institute of Technology
Cambridge, MA 02139 USA
E-mail: grotz at mit dot edu
Tel.: 617-253-3498
Fax: 617-258-7401

Research Interests: sedimentology; stratigraphy; geobiology; ancient surface processes on Earth and Mars. Field-based investigations of depositional systems are the starting point for analysis of past processes, interactions between life and environment, and tectonic and climatic regimes.

The photos below show John Grotzinger at Shark's Bay.  The first image shows him standing on a partially submerged stromatolite, and the second image shows him examining a cyanobacterial mat
(a pustular mat composed mainly of Entophysalis major).

John Grotzinger Web page at Caltech