-
2
-
-
29144462153
-
-
S. A. Bowring, P. Myrow, E. Landing, J. Ramenzani, Astrobiology 2, 112 (2002).
-
(2002)
Astrobiology
, vol.2
, pp. 112
-
-
Bowring, S.A.1
Myrow, P.2
Landing, E.3
Ramenzani, J.4
-
4
-
-
33646337958
-
-
A. H. Knoll, M. R. Walter, G. M. Narbonne, N. Christie-Blick, Lethaia 39, 13 (2006).
-
(2006)
Lethaia
, vol.39
, pp. 13
-
-
Knoll, A.H.1
Walter, M.R.2
Narbonne, G.M.3
Christie-Blick, N.4
-
6
-
-
15944373514
-
-
D. Condon, M. Zhu, S. Bowring, W. Wang, J. Yang, Science 308, 95 (2005).
-
(2005)
Science
, vol.308
, pp. 95
-
-
Condon, D.1
Zhu, M.2
Bowring, S.3
Wang, W.4
Yang, J.5
-
9
-
-
0026613365
-
-
A. H. Knoll, Science 256, 622 (1992).
-
(1992)
Science
, vol.256
, pp. 622
-
-
Knoll, A.H.1
-
12
-
-
33846571506
-
-
S. Xiao, A. J. Kaufman, Eds, Kluwer, New York
-
G. P. Halverson, in Neoproterozoic Geobiology and Paleobiology, Topic in Geobiology, S. Xiao, A. J. Kaufman, Eds. (Kluwer, New York, 2005), vol. 27, pp. 231-271.
-
(2005)
Neoproterozoic Geobiology and Paleobiology, Topic in Geobiology
, vol.27
, pp. 231-271
-
-
Halverson, G.P.1
-
15
-
-
1042286984
-
-
D. A. Wood, R. W. Dalrymple, G. M. Narbonne, J. G. Gehling, M. E. Clapham, Can. J. Earth Sci. 40, 1375 (2003).
-
(2003)
Can. J. Earth Sci
, vol.40
, pp. 1375
-
-
Wood, D.A.1
Dalrymple, R.W.2
Narbonne, G.M.3
Gehling, J.G.4
Clapham, M.E.5
-
18
-
-
33846690692
-
-
C. R. Scotese, PALEOMAP Project (Arlington, TX, 2001), 51.
-
C. R. Scotese, PALEOMAP Project (Arlington, TX, 2001), vol. 51.
-
-
-
-
19
-
-
33846695372
-
-
G. M. Narbonne, R. W. Dalrymple, M. La Flamme, J. Gehling, W. D. Boyce, Life After Snowball: The Mistaken Point Biota and the Cambrian of Newfoundland, NAPC Field Trip Guide (North American Paleontological Convention, Halifax, Canada, 2005).
-
G. M. Narbonne, R. W. Dalrymple, M. La Flamme, J. Gehling, W. D. Boyce, Life After Snowball: The Mistaken Point Biota and the Cambrian of Newfoundland, NAPC Field Trip Guide (North American Paleontological Convention, Halifax, Canada, 2005).
-
-
-
-
26
-
-
33846668365
-
-
Materials and methods are available as supporting material on Science Online.
-
Materials and methods are available as supporting material on Science Online.
-
-
-
-
27
-
-
33846676973
-
-
Although FeHR/FeT ratios exceeding 0.38 are strongly indicative of sediment deposition in an anoxic water column, anoxic deposition can also yield lower ratios if the flux of clastic material is sufficient to overwhelm the water-column flux of iron. This happens, for example, in turbidite intervals in the Black Sea (22, Also, localized situations of preferential continentally derived iron oxide deposition or sediment iron remobilization can yield FeHR/FeT ratios of greater than 0.38, as is sometimes the case in inner shore environments (23, However, we are aware of no instances whereby oxic deposition in fully marine settings has resulted in FeHR/FeT ratios of greater than 0.38, and this is the case for both continental margin sediments and deep-sea sediments such as red clays 23, As further evidence of enhanced iron deposition in pre-Drook sediments, we highlight that many intervals of the Gaskiers diamictite weather blood red in the field, in stark contrast t
-
Although FeHR/FeT ratios exceeding 0.38 are strongly indicative of sediment deposition in an anoxic water column, anoxic deposition can also yield lower ratios if the flux of clastic material is sufficient to overwhelm the water-column flux of iron. This happens, for example, in turbidite intervals in the Black Sea (22). Also, localized situations of preferential continentally derived iron oxide deposition or sediment iron remobilization can yield FeHR/FeT ratios of greater than 0.38, as is sometimes the case in inner shore environments (23). However, we are aware of no instances whereby oxic deposition in fully marine settings has resulted in FeHR/FeT ratios of greater than 0.38, and this is the case for both continental margin sediments and deep-sea sediments such as red clays (23). As further evidence of enhanced iron deposition in pre-Drook sediments, we highlight that many intervals of the Gaskiers diamictite weather blood red in the field, in stark contrast to the greenish gray color of the Drook.
-
-
-
-
28
-
-
33646505072
-
-
M. T. Hurtgen, G. P. Halverson, M. A. Arthur, P. F. Hoffmann, Earth Planet. Sci. Lett. 245, 551 (2006).
-
(2006)
Earth Planet. Sci. Lett
, vol.245
, pp. 551
-
-
Hurtgen, M.T.1
Halverson, G.P.2
Arthur, M.A.3
Hoffmann, P.F.4
-
29
-
-
0001818584
-
-
E. T. Premuzic, C. M. Benkovitz, J. S. Gaffney, J. J. Walsh, Org. Geochem. 4, 63 (1982).
-
(1982)
Org. Geochem
, vol.4
, pp. 63
-
-
Premuzic, E.T.1
Benkovitz, C.M.2
Gaffney, J.S.3
Walsh, J.J.4
-
32
-
-
33845640434
-
-
D. A. Fike, J. P. Grotzinger, L. M. Pratt, R. E. Summons, Nature 444, 744 (2006).
-
(2006)
Nature
, vol.444
, pp. 744
-
-
Fike, D.A.1
Grotzinger, J.P.2
Pratt, L.M.3
Summons, R.E.4
-
33
-
-
0037147193
-
-
K. S. Habicht, M. Gade, B. Thamdrup, P. Berg, D. E. Canfield, Science 298, 2372 (2002).
-
(2002)
Science
, vol.298
, pp. 2372
-
-
Habicht, K.S.1
Gade, M.2
Thamdrup, B.3
Berg, P.4
Canfield, D.E.5
-
35
-
-
27144528220
-
-
A. N. Olcott, A. L. Sessions, F. A. Corsetti, A. J. Kaufman, T. Flavio de Oliviera, Science 310, 471 (2005).
-
(2005)
Science
, vol.310
, pp. 471
-
-
Olcott, A.N.1
Sessions, A.L.2
Corsetti, F.A.3
Kaufman, A.J.4
Flavio de Oliviera, T.5
-
36
-
-
33846695040
-
-
A. N. Olcott, C. Li, A. L. Sessions, F. A. Corsetti, P. Peng, Geochim. Cosmochim. Acta 70, A456 (2006).
-
(2006)
Geochim. Cosmochim. Acta
, vol.70
-
-
Olcott, A.N.1
Li, C.2
Sessions, A.L.3
Corsetti, F.A.4
Peng, P.5
-
37
-
-
0004263296
-
-
Lamont-Doherty Geological Observatory, Palisades, NY
-
W. S. Broecker, T.-H. Peng, Tracers in the Sea (Lamont-Doherty Geological Observatory, Palisades, NY, 1982).
-
(1982)
Tracers in the Sea
-
-
Broecker, W.S.1
Peng, T.-H.2
-
39
-
-
0041930529
-
-
Geological Association of Canada, Guidebook B5, St. John's, Canada
-
G. M. Narbonne, R. W. Dalrymple, J. G. Gehling, Neoproterozoic Fossils and Environments of the Avalon Peninsula, Newfoundland. (Geological Association of Canada, Guidebook B5, St. John's, Canada, 2001).
-
(2001)
Neoproterozoic Fossils and Environments of the Avalon Peninsula, Newfoundland
-
-
Narbonne, G.M.1
Dalrymple, R.W.2
Gehling, J.G.3
-
40
-
-
33846681215
-
-
A. P. Benus, in Trace Fossils, Small Shelly Fossils and the Precambrian- Cambrian Boundary, E. Landing, G. M. Narbonne, P. Myrow, Eds. (New York State Museum and Geological Survey Bulletin, Albany, NY, 1988), 463, pp. 8-9.
-
A. P. Benus, in Trace Fossils, Small Shelly Fossils and the Precambrian- Cambrian Boundary, E. Landing, G. M. Narbonne, P. Myrow, Eds. (New York State Museum and Geological Survey Bulletin, Albany, NY, 1988), vol. 463, pp. 8-9.
-
-
-
-
41
-
-
33846680904
-
-
Our work was funded by the Danish National Research Foundation (Danmarks Grundforskningsfond, a Natural Environment Engineering Research Council Research Fellowship S.W.P, the Natural Sciences and Engineering Research Council of Canada, and a Queen's Research Chair. We thank the Parks and Natural Areas, and Government of Newfoundland and Labrador for scientific permits; the Portugal Cove South Interpretation Centre for help and support; and M. Laflamme and L. Salling for help
-
Our work was funded by the Danish National Research Foundation (Danmarks Grundforskningsfond), a Natural Environment Engineering Research Council Research Fellowship (S.W.P.), the Natural Sciences and Engineering Research Council of Canada, and a Queen's Research Chair. We thank the Parks and Natural Areas, and Government of Newfoundland and Labrador for scientific permits; the Portugal Cove South Interpretation Centre for help and support; and M. Laflamme and L. Salling for help.
-
-
-
|