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Cited by 456Paleontology and Stratigraphy of FossilsGeochemistry and Elemental AnalysisGeological and Geochemical Analysis

The silica cycle in the Precambrian

Siever, Raymond·1992·Geochimica et Cosmochimica Acta
DOI 10.1016/0016-7037(92)90303-z
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  • The initial silica concentration of 60 ppm is the value expected in Precambrian seawater prior to the evolution of silica-secreting organisms and is at the upper limit of weathering fluids found on contemporary Earth.

    “This is the value expected in Precambrian seawater prior to the evolution of silicasecreting organisms [Siever, 1992] and is at the upper limit of weathering fluids found on contemporary Earth, which have silica concentrations ranging from 2 to 60 ppm, depending on rock type [Garr½ls and MacKenzie, 1971, p.160].”

    From A chemical model for evaporites on early Mars: Possible sedimentary tracers of the early climate and implications for exploration (1999) · cites this paper as Siever, 1992

  • The Archaean ocean had significantly elevated concentrations of dissolved silica, at least as high as saturation with cristobalite (0.67 mM at 40°C in seawater), between 0.5 and 1.5 mM for Fe(III)-Si gels, or as high as 2.20 mM for amorphous silica.

    “Similar to Fe(II), the Archaean ocean had significantly elevated concentrations of dissolved silica, at least as high as at saturation with cristobalite (0.67 mM at 40 o C in seawater), between 0.5 and 1.5 mM for Fe(III)-Si gels, depending on the Fe/Si ratio, or as high as 2.20 mM for amorphous silica (Siever, 1992; Maliva et al., 2005; Konhauser et al., 2007a; Zheng et al., 2016).”

    From Iron formations: A global record of Neoarchaean to Palaeoproterozoic environmental history (2017) · cites this paper as Siever, 1992

  • Most abiogenic cherts formed in the Precambrian, when seawater silica was high because no biological sink existed.

    “Abiogenic cherts are predominantly formed in the Precambrian due to high marine silica concentrations in the absence of a biological sink (Siever, 1992;Maliva et al., 2005).”

    From Trace elements at the intersection of marine biological and geochemical evolution (2016) · cites this paper as Siever, 1992

  • High concentrations of these ions within sediment pore-waters may also have been favoured by their elevated concentrations in Precambrian seawater, owing in part to the lack of significant biomineral sinks.

    “High concentrations of these ions within sediment pore-waters may also have been favoured by their elevated concentrations in the Precambrian seawater, owing in part, to the lack of significant biomineral sinks (e.g. Maliva et al., 1989; 2005; Siever, 1992; Porter & Knoll, 2000; Shields, 2002; Perry & Lefticariu, 2003).”

    From Remarkable preservation of microbial mats in Neoproterozoic siliciclastic settings: Implications for Ediacaran taphonomic models (2009) · cites this paper as Siever, 1992

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Authors
Siever, R.
Affiliations
Harvard University (US)
Corresponding author
Siever, Raymond
Venue
Geochimica et Cosmochimica Acta
Publisher
Elsevier BV
Published
1992-08
Volume
56
Issue
8
Pages
3265-3272
ISSN
0016-7037 (ISSN-L)
DOI
10.1016/0016-7037(92)90303-z
OpenAlex
W1992933657
Cited by
456
References
37
Citations by year
2026: 19 · 2025: 42 · 2024: 36 · 2023: 25 · 2022: 31 · 2021: 28 · 2020: 31 · 2019: 25 · 2018: 18 · 2017: 16 · 2016: 20 · 2015: 28 · 2014: 13 · 2013: 13 · 2012: 11
FWCI
0.63
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
Geochimica et Cosmochimica Acta (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
Keywords
silica cycling, Precambrian, Neoproterozoic, dissolved silica, clay minerals, zeolites, pore water, hydrothermal input, weathering, tectonism, silica solubility

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