EGU General Assembly 2008
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  Oral Programme - IS4 - BG7.2/SSP34 The Early Earth: inside, out and alive (co-sponsored by the ESF research network "Archean Environment" & EAG; co-organized by BG & SSP; co-listed in GD, GMPV, MPRG & TS)

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Convener: Parman, S.
Co-Convener: van Hunen, J., Javaux, E., Arndt, N., Zegers, T., Samuel, H.
Co-Sponsorship: ESF research network "Archean Environment"

Monday, 14 April 2008

Lecture Room: Lecture Room 20

Chairperson: JAVAUX, E.

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8:30 - 8:45
EGU2008-A-05214;  IS4 - BG7.2/SSP34-1MO1O-001
Benzerara, K.; Bernard, S.; Lepot, K.; Miot, J.; Meibom, A.; Lopez-Garcia, P.; Beyssac, O.; Philippot, P.; Kazmierczack, J.; Brown Jr., G.E.
Preservation of microbial structures in modern and ancient fossil assemblages: a microscopy and spectroscopy assessment

8:45 - 9:00
EGU2008-A-05247;  IS4 - BG7.2/SSP34-1MO1O-002
Lepot, K; Benzerara, K; Brown, G.E.; Philippot, P.
Nanoscale evidence for microbial mineralization of 2.7 Ga stromatolites

9:00 - 9:15
EGU2008-A-00483;  IS4 - BG7.2/SSP34-1MO1O-003
Medvedev, P.V.; Javaux, E.J.
Palaeoproterozoic microfossils from the Kondopoga Formation (Eastern Fennoscandian shield).

9:15 - 9:30
EGU2008-A-04604;  IS4 - BG7.2/SSP34-1MO1O-004
Westall, F.; Lemelle, L.; Simionovici, A.; Southam, G.; salomé, M.; MacLean, L. ; Wirick, S. ; Toporski, J.; jauss, A.
Vertical geochemical profile across a 3.33 Ga microbial mat from the Barberton Greenstone Belt.

9:30 - 9:45
EGU2008-A-04565;  IS4 - BG7.2/SSP34-1MO1O-005
Cavalazzi, B.; Westall, F.; Barbieri, R.; Foucher, F.
Astrobiological implications of microbes in basaltic pillow lava crusts (Atlantic Ocean)

9:45 - 10:00
EGU2008-A-09879;  IS4 - BG7.2/SSP34-1MO1O-006
Pitcairn, I. K.; Arndt, N. T.
Mineralogical and chemical changes during seafloor alteration in the Archaean


Chairperson: ARNDT, N.

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10:30 - 10:45
EGU2008-A-11593;  IS4 - BG7.2/SSP34-1MO2O-001
Bekker, A.; Barley, M.E.; Fiorentini, M.L.; Rouxel, O.J.; Rumble, D.; Beresford, S.W.
Multiple S and Fe isotope constraints on the origin of NiS mineralization hosted in Archean komatiites (solicited)

10:45 - 11:00
EGU2008-A-02004;  IS4 - BG7.2/SSP34-1MO2O-002
Rollinson, H
The Oman ophiolite – some useful analogues for the very early Earth (solicited)

11:00 - 11:30
EGU2008-A-00565;  IS4 - BG7.2/SSP34-1MO2O-003
Love, G.D.; Stalvies, C.; Bowden, S.A.; Grosjean, E.; Marshall, C.P.; Meredith, W.; Snape, C.E.; Summons, R.E.
Utilizing molecular biomarkers bound into kerogen to follow biological evolution and environmental change in the Precambrian ocean (solicited)

11:30 - 11:45
EGU2008-A-11010;  IS4 - BG7.2/SSP34-1MO2O-004
Parman, S.W.; Grocke, D.R.; Armstrong, H.A.; Pearson, D.G.; Nowell, G.M.; van Hunen, J.
Early Earth catastrophic melting events and biosphere-atmosphere-ocean evolution

11:45 - 12:00
EGU2008-A-05384;  IS4 - BG7.2/SSP34-1MO2O-005
Zhong, S. J.
A Case for Degree-1 Mantle Convection During and Shortly After Pangea Formation (solicited)


Chairperson: VAN HUNEN, J.

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13:30 - 13:45
EGU2008-A-10033;  IS4 - BG7.2/SSP34-1MO3O-001
Pietranik, A.; Hawkesworth, C.J.; Storey, C.; Kemp, A.I.S; Sircombe, K.N.; Whitehouse, M.J.
Secular evolution of continental crust: evidence from Hf and O isotopes in zircon from Slave Province, Canada.

13:45 - 14:00
EGU2008-A-05041;  IS4 - BG7.2/SSP34-1MO3O-002
Moyen, JF; Stevens, G; Belcher, R; Kisters, A
High- and low- pressure sub-series in archaean TTGs: a case study from the mid-archaean Barberton Granite—Greenstone Terrain, South Africa. (solicited)

14:00 - 14:15
EGU2008-A-09945;  IS4 - BG7.2/SSP34-1MO3O-003
Coltice, N.; Labrosse, S. ; Hernlund, J.
Geochemical consequences of the crystallization of a basal magma ocean

14:15 - 14:30
EGU2008-A-09522;  IS4 - BG7.2/SSP34-1MO3O-004
Boyet, M.; Carlson, R.W.
Terrestrial variation in 142Nd/144Nd and implications for early mantle dynamics (solicited)

14:30 - 14:45
EGU2008-A-03356;  IS4 - BG7.2/SSP34-1MO3O-005
Samuel, H.; Tackley, P.
Heat partitioning during core formation in terrestrial planets

14:45 - 15:00
EGU2008-A-08317;  IS4 - BG7.2/SSP34-1MO3O-006
Tarduno, J A; Cottrell, R D; Watkeys, M K; Hofmann, A
Strength of the Archean geomagnetic field, the paleomagnetosphere, and magnetic shielding against the young active Sun (solicited)


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