When did life first appear on Earth and what form did it take? The
answer to this intriguing and fundamentally important question lies
somewhere within the early Archean rock record. The young Earth was,
however, a very different place to that we know today and numerous
pitfalls await our interpretation of these most ancient rocks.
The first half of this practical guide equips the reader with the
background knowledge to successfully evaluate new potentially biological
finds from the Archean rock record. Successive steps are covered, from
locating promising samples in the field, through standard petrography
and evaluation of antiquity and biogenicity criteria, to the latest
state of the art geochemical techniques. The second half of the guide
uniquely brings together all the materials that have been claimed to
comprise the earliest fossil record into an easily accessible, fully
illustrated format.
This will be a handbook that every Archean geologist, palaeobiologist
and astrobiologist will wish to have in their backpack or on their
lab-bench.