1 Carr MH (1996) Water on Mars. Oxford University Press, New York

2 Carr MH, Malin MC (2000) Meter scale characteristics of Martian channels and valleys. Icarus 146: 366-386

3 Clifford SM, Parker TJ (2001) The evolution of the Martian hydrosphere: implications for the fate of a primordial ocean and the current state of the Northern Plains. Icarus 154: 40-79

4 Hynek BM, Phillips RJ (2003) New data reveal mature, integrated drainage systems on Mars indicative of past precipitation. Geology 31: 757-760

5 Treiman AH, Barrett RA, Gooding JL (1993) Preterrestrial alteration of the Lafayette (SNC) meteorite. Meteoritics 28: 86-97

6 Romanek CS, Grady MM, Wright IP, Mittlefehldt DW, Socki RA, Pillinger CT, Gibson EK (1994) Record of fluid-rock interactions on Mars from the meteorite ALH84001. Nature 372: 655-657

7 Watson LL, Hutcheon ID, Epstein S, Stolper EM (1994) Water on Mars: clues from deuterium/hydrogen and water contents of hydrous phases in SNC meteorites. Science 265: 86-90

8 Christensen PR and 15 colleagues (2000) Detection of crystalline hematite mineralization on Mars by the Thermal Emission Spectrometer: evidence for near-surface water. J. Geophys. Res. 105(E4): 9623-9642

9 Christensen PR and 24 colleagues (2001) Mars Global Surveyor Thermal Emission Spectrometer experiment: investigation description and surface science results. J. Geophys. Res. 106(E10): 23823-23871

10 Brasier MD, Green OR, Jephcoat AP, Kleppe AK, van Kranendonk M, Lindsay JF, Steele A, Grassineau N (2002) Questioning the evidence for Earth's oldest fossils. Nature 416: 76-81

11 Lindsay JF, Brasier MD, McLoughlin N, Green OR, Fogel M, McNamara KM, Steele A, Mertzman SA (2003) Abiotic Earth - establishing a baseline for earliest life, data from the Archaean of western Australia. 34th Lun. Planet. Sci. Conf. 1137

12 Wilde SA, Valley JW, Peck WH, Graham CM (2001) Evidence from detrital zircons for the existence of continental crust and oceans on the Earth 4.4 Gyr ago. Nature 409: 175-178

13 Mojzsis SJ, Arrhenius G, Keegan KD, Harrison TH, Nutman AP, Friend CLR (1996) Evidence for life on Earth before 3,800 million years ago. Nature 384: 5559

14 Kamber BS, Moorbath S, Whitehouse MJ (2001) The oldest rocks on earth: time constraints and geological controversies. In: Lewis CLE, Knell SJ (eds) The Age of the Earth: from 4004 BC to AD 2002. Geol. Soc. Lond. Spec. Pub. 190: 177203

15 Arndt N, Chauvel C (1991) Crust of the Hadean Earth. Bull. Geol. Soc. Denmark 39: 145-151

16 Arndt NT (1994) Archean komatiites. In: Condie KC (ed) Archean crustal evolution, Elsevier, Amsterdam, pp 11-44

17 Nijman W, de Bruijne, KH, Valkering M (1999) Growth fault control of Early Archaean cherts, barite mounds and chert-barite veins, North Pole Dome, Eastern Pilbara, Western Australia. Precambrian Res. 95: 247-274

18 Paris I, Stanistreet IG, Hughes MJ (1985) Cherts of the Barberton greenstone belt interpreted as products of submarine exhalative activity. J. Geol. 93: 111-129.

19 De Ronde CEJ, de Wit MJ, Spooner ETC (1994) Early Archaean (> 3.2 Ga) iron-oxide-rich, hydrothermal discharge vents in the Barberton greenstone belt, South Africa. Geol. Soc. Am. Bull. 106: 86-104

20 Knauth LP, Lowe DR, (2003) High Archean climatic temperature inferred from oxygen isotope geochemistry of cherts in the 3.5 Ga Swaziland Supergroup, South Africa. Geol. Soc. Am. Bull. 115: 566-580

21 Grotzinger JP, Kasting JF (1993) New constraints on Precambrian ocean composition. J. Geol. 101: 235-243

22 Holland HD (1984) The Chemical Evolution of the Atmosphere and Oceans. Princeton University Press, Princeton

23 Hardie LA (2003) Secular variations in Precambrian seawater chemistry and the timing of Precambrian aragonite seas and calcitic seas. Geology 31: 785-788

24 Kempe S, Degens ET (1985) An early soda ocean? Chem. Geol. 5: 95-108

25 Walker JCG (1985) Carbon dioxide on the early Earth. Orig. Life 16: 117-127

26 Kasting JF (1993) Earth's early atmosphere. Science 259: 920-926

27 Nisbet EG (1995) Archaean ecology: a review of evidence for the early development of bacterial biomes, and speculation on the development of a global-scale biosphere. In: Coward MP, Ries AC (eds) Early Precambrian Processes. Geol. Soc. London, Oxford, pp 27-52

28 Sagan C, Mullen G (1972) Earth and Mars: evolution of atmospheres and surface temperatures. Science 177: 52-56

29 Pavlov AA, Kasting JF, Brown LL, Rages KA, Freedman R (2000) Greenhouse warming by CH4 in the atmosphere of early Earth. J. Geophys. Res. 105(E5): 11981-11990 4

30 Hartmann WK, Ryder G, Dones L, Grinspoon D (2000) The time-dependent intense bombardment of the primordial Earth/Moon system, In: Canup RM, Righter K (eds) Origin of the Earth and Moon. University of Arizona Press, Tucson, pp 493-512

31 Ryder G, Koeberl C, Mojzsis SJ (2000) Heavy bombardment on the Earth at ~ 3.85 Ga: the search for petrographic and geochemical evidence. In: Canup RM, Righter K (eds) Origin of the Earth and Moon. University of Arizona Press, Tucson, pp 475-492

32 Kring DA, Cohen BA (2002) Cataclysmic bombardment throughout the inner solar system 3.9-4.0 Ga. J. Geophys. Res. 107: 5009, 10.1029/2001JE001529

33 Maher KA, Stevenson DJ (1988) Impact frustration of the origin of life. Nature 331: 612-614

34 Sleep NH, Zahnle KJ, Kasting JF, Morowitz HJ (1989) Annihilation of ecosystems by large asteroid impacts on the early Earth. Nature 342: 139-142

35 Ryder G (2003) Bombardment of the Hadean Earth: wholesome or deleterious. Astrobiology 3: 3-6

36 Anbar A, Zahnle KJ, Arnold GL, Mojzsis SJ (2001) Extraterrestrial iridium, sediment accumulation and the habitability of the early Earth's surface. J. Geophys. Res. 106: 3219-3236

37 Schoenberg R, Kamber BS, Collerson KD, Moorbath S (2003) Tungsten isotope evidence from ~3.8-Gyr metamorphosed sediments for early meteorite bombardment of the Earth. Nature 418: 403-405

38 Lowe DR, Byerly GR (1986) Early Archean silicate spherules of probable impact origin, South Africa and Western Australia. Geology 14: 83-86

39 Lowe DR, Byerly GR, Kyte FT, Shukolyukov A, Asaro F, Krull A (2003) Spherule beds 3.47-3.24 billion years old in the Barberton Greenstone Belt, South Africa: a record of large meteorite impacts and their influence on early crustal and biological evolution. Astrobiology 3: 7-48

40 Kyte FT, Shukolyukov A, Lugmaor GW, Lowe DR, Byerly GR (2003) Early Archean spherule beds: chromium isotopes confirm origin through multiple impacts of projectiles of carbonaceous chondrite type. Geology 31: 283-286

41 Nisbet EG, Sleep NH (2001) The habitat and nature of early life. Nature 409: 1083-1091

42 Westall F (2004) The geological context for the origin of life and the mineral signatures of fossil life. In: Martin H, Gardaud, M, Reisse G, Barbier B (eds) The Early Earth and the Origin of Life, Springer-Verlag, Berlin, in press

43 Gold T (1999) The Deep Hot Biosphere. Copernicus Books, Springer-Verlag, New York

44 Fredrickson JK, Onstott TC (1996) Microbes deep inside the Earth. Sci. Am. 27(4): 42

45 Ueno Y, Maruyama S, Isozaki Y, Yurimoto H (2001) Early Archean (ca. 3.5 Ga) microfossils and 13C-depleted carbonaceous matter in the North Pole area, Western Australia: field occurrence and geochemistry. In: Nakashsima S, Maruyama S, Brack A, Windley BF (eds) Geochemistry and the Origin of Life. Universal Acad. Press, Tokyo, pp 203-236

46 Appel PWU, Moorbath S (1999) Exploring Earth's oldest geological record in Greenland. Eos 80: 257-264

47 Schidlowski M (1988) A 3,800-million-year isotopic record of life from carbon in sedimentary rocks. Nature 333: 313-318

48 Mojzsis SJ, Arrhenius G, McKeegan KD, Harrison TM, Nutman AP, Friend CRL (1996) Evidence for life on Earth before 3800 million years ago. Nature 384: 5559

49 Rosing MT (1999) 13C depleted carbon microparticles in > 3700 Ma seafloor sedimentary rocks from West Greenland. Science 283: 674-676

50 Pflug HD, Jaeschke-Boyer H (1979) Combined structural and chemical analysis of 3,800-Myr-old microfossils. Nature 280: 483-486

51 Pflug HD (2001) Earliest organic evolution. Essay to the memory of Bartholomew Nagy. Precambrian Res. 106: 79-91

52 Robbins EI (1987) Appelella ferrifera, a possible new iron-coated microfossil in the Isua Iron Formation, southwestern Greenland. In: Appel PWU, LaBerge GL (eds) Precambrian Iron Formations. Theophrastes, Athens, pp. 141-154

53 Robbins EI, LaBerge GL, Schmidt RG (1987) A model for the biological precipitation of Precambrian Iron-Formations - B. Morphological evidence and modern analogs. In: Appel PWU, LaBerge GL (eds) Precambrian Iron Formations. Theophrastes, Athens, pp. 97-139

54 Robbins EI, Iberall AS (1991) Mineral remains of early life on Earth? On Mars? Geomicrobiol. J. 9: 51-66

55 Westall F, Folk RL (2003) Exogenous carbonaceous microstructures in Early Archaean cherts and BIFs from the Isua greenstone belt: implications for the search for life in ancient rocks. Precambrian Res. 126:313-330

56 Van Zuilen M, Lepland A, Arrhenius G (2002) Reassessing the evidence for the earliest traces of life. Nature 418: 627-630

57 Myers JS (2003) Isua enigmas: illusive tectonic, sedimentary, volcanic, and organic features of the > 3.8 - >3.7 Ga Isua greenstone belt, Southwest Greenland. Geophys. Res. Abstr. 5: EAE-03-A-13823

58 Van Zuilen M, Lepland A, Teranes J, Finarelli J, Wählen M, Arrhenius G (2003) Graphite and carbonate in the 3.8 Ga old isua Supracrustal belt, southern West Greenland. Precambrian Res. 126: 331-348

59 Lepland A, Arrhenius G, Cornell D (2002) Apatite in early Archean Isua supracrustal rocks, southern West Greenland: its origin, association with graphite and potential as a biomarker. Precambrian Res. 118: 221-241

60 Fedo CM, Whitehouse MJ (2002) Metasomatic origin of quartz-pyroxene rock, Akilia, Greenland, and implications for Earth's earliest life. Science 296: 14481452

61 Westall F (1999) The nature of fossil bacteria: a guide to the search for extraterrestrial life. J. Geophys. Res. 104(E7): 16,437-16,451

62 Westall, F. (in prep) On the identification of Early Archaean fossil bacteria and biofilms

63 Hayes JM (1994) Global methanotrophy at the Archean-proterozoic transition. In: Bengtson S (ed) Early Life on Earth. Columbia University Press, New York, pp 220-236

64 Madigan MT, Martinko JM, Park J (1999) Brock: Microbiology of Microorganisms. Prentice, Upper Saddle River (New Jersey)

65 Schopf JW (1993) Microfossils of the Early Archean Apex Chert: new evidence of the antiquity of life. Science 260: 640-646

66 Westall F, Boni L, Guerzoni ME (1995) The experimental silicification of microorganisms. Palaeontology 38: 495-528

67 Westall F, De Wit MJ, Dann J, Van Der Gaast S, De Ronde C, Gerneke D (2001) Early Archaean fossil bacteria and biofilms in hydrothermally-influenced, shallow water sediments, Barberton greenstone belt, South Africa. Precambrian Res. 106: 93-116

68 Westall F, Brack A, Barbier B, Bertrand M, Chabin A (2002). Early earth and early life: an extreme environment and extremophiles - application to the search for life on Mars. Proc. Second European Workshop on Exo/Astrobiology Graz, Austria, 16-19 September 2002. ESA SP-518, European Space Agency, Noordwijk, pp 131-136

69 Walsh MM (1992) Microfossils and possible microfossils from the Early Archaean Onverwacht Group, Barberton Mountain Land, South Africa. Precambrian Res. 54: 271-293

70 Westall F, Gerneke D (1998) Electron microscope methods in the search for the earliest life forms on Earth (in 3.5-3.3 Ga cherts from the Barberton greenstone belt, South Africa): applications for extraterrestrial life studies. Proc. SPIE 3441: 158-169

71 Walsh MM, Lowe DR (1999) Modes of accumulation of carbonaceous matter in the early Archaean: A petrographic and geochemical study of carbonaceous cherts from the Swaziland Supergroup. In: Lowe DR, Byerly GR (eds) Geologic Evolution of the Barberton Greenstone Belt, South Africa, Geol. Soc. Am. Spec. Paper 329: 115-132

72 Hayes JM, Kaplan IR, Wedeking KW (1983) Precambrian organic chemistry, preservation of the record. In: Schopf JW (ed) Earth's Earliest Biosphere, Princeton University Press, Princeton, pp 93-134

73 Strauss H, Moore TB (1992) Abundances and isotopic compositions of carbon and sulfur species in whole rock and kerogen samples. In: Schopf JW, Klein C (eds) The Proterozoic Biosphere: A Multidisciplinary Study. Camdridge University Press, Cambridge, pp 709-798

74 Beaumont V, Robert F (1999) Nitrogen isotope ratios of kerogens in Precambrian cherts: a record of the evolution of atmospheric chemistry? Precambrian Res. 96: 63-82

75 Pinti DL, Hashizume K (2001) 15N-depleted nitrogen in Early Archean kerogens: clues on ancient marine chemosynthetic-based ecosystems? Precambrian Res. 105: 85-88

76 Pinti DL, Hashizume K, Matsuda J-I (2001) Nitrogen and argon signatures in 3.82.8 Ga metasediments: clues on the chemical state of the Archean ocean and the deep biosphere. Geochim. Cosmochim. Acta 65: 2301-2315

77 Shen Y, Buick R, Canfield DE (2001) Isotopic evidence for microbial sulphate reduction in the early Archaean era. Nature 410: 77-81

78 Westall F, Steele A, Toporski J, Walsh M, Allen C, Guidry S, Gibson E, McKay D, Chafetz H (2000) Polymeric substances and biofilms as biomarkers in terrestrial materials: implications for extraterrestrial materials. J. Geophys. Res. 105(E10): 24,511-24,527

79 Rye R, Kuo PH, Holland HD (1995) Atmospheric carbon dioxide concentrations before 2.2 billion years ago. Nature 378: 603-605

80 Forterre P, Confalonieri F, Charbonnier F, Duguet M (1995) Speculations on the origins of life and thermophily: review of available information on reverse gyrase suggests that hyperthermophilic procaryotes are not so primitive. Orig. Life Evol. Biosph. 25: 235-249

81 Kasting JF (1997) Warming early Earth and Mars. Science 276: 1213-1215

82 Lazcano A, Miller SL (1994) How long did it take for life to begin and to evolve to cyanobacteria? J. Molec. Evol. 36: 546-554

83 Frey H, Hutchinson L, Sakimoto S, Roark J (2000) A large population of possible buried impact basins on Mars revealed by MOLA topographic data. 21st Lun. Planet. Sci. Conf. 1736

84 Friedmann EI, Koriem AM (1989) Life on Mars: how it disappeared (if it was ever there). Adv. Space Res. 9(6): 167-172

85 Gilichinsky DA (2002) Permafrost model of extraterrestrial habitat. In: Horneck G, Baumstark-Khan C (eds) Astrobiology, Springer-Verlag, Berlin, pp 125-142

86 Jakosky BM, Shock EL (1998) The biological potential of Mars, the early Earth, and Europa. J. Geophys. Res. 103(E8): 19359-19364

87 Brack A (2002) Water, the spring of life. In: Horneck G, Baumstark-Khan C (eds) Astrobiology, Springer-Verlag, Berlin, pp 79-88

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