Abiological origin of described stromatolites older than 3.2 Ga: Comment and Reply Buick, Roger ; Groves, D. I. ; Dunlop, J. S. R. ; Lowe, Donald R. Abstract Publication: Geology Pub Date: February 1995 DOI: 10.1130/0091-7613(1995)023<0191:AOODSO>2.3.CO;2 Bibcode: 1995Geo....23..191B