July 2, 2003 revision
- Added seventeen new maps (numbers 786a through 788)
March 31, 2003 revision
- Added ten new maps (numbers 776 through 785)
- Updated citation for map 594 (open-file report superseded by published map)
December 26, 2002 revision
- Added six new maps (numbers 770 through 775)
July 1, 2002 revision
- Added five new maps (numbers 765 through 769)
- Corrected year for map 757
- Corrected scale and publisher for map 657 and moved outline from Plate 8 to Plate 7
- Corrected scale for map 669 and moved outline from Plate6B to Plate 8
- Corrected scale for map 584 and moved outline from Plate 5 to Plate 9A
- Corrected scale for map 343 and moved corrected outline from Plate 2B to Plate 1
February 8, 2002 revision
- Revised title upon release of the separate thesis map index
- Added two new maps (numbers 763 and 764)
- Corrected scale for map 200b and moved map outline from Plate 8 to Plate 7
November 2, 2001 revision
- Added two new maps (numbers 761 and 762)
- Corrected map outline for map 187
October 1, 2001 revision
- Corrected scale for map numbers 72a through 72d; added map 72e to Plate 1
- Corrected scale for map 96b and moved map outline from Plate 5 to Plate 3
September 7, 2001 revision
- Added one new map (number 760)
August 6, 2001 revision
- Added plates for the geophysical map outlines; index now in its complete form
- Updated citation and map outline for map 284 (open-file report superseded by published map)
- Corrected map outline for map 36b
- Corrected citation for map 58
- Corrected scale for map 59 and moved the map outline from Plate 2B to Plate 1
May 31, 2001 revision
- Revised citations for maps 689 through 700 to state that only the slope stability maps of the coastal zone atlas are available online
May 14, 2001 revision
- Added five new maps (numbers 755 through 759)
- Updated citation for map 246
- Deleted map 215 (superseded by map 759)
April 6, 2001
- Initial online release; contains bibliography of geologic and geophysical mapping and plates outlining geologic maps (geophysical map outlines to come later)