Cited by 228Paleontology and Stratigraphy of FossilsOrigins and Evolution of LifeGeological and Geochemical Analysis

The Hadean-Archaean Environment

Open access
Sleep, N. H.·2010·Cold Spring Harbor Perspectives in Biology

Abstract

A sparse geological record combined with physics and molecular phylogeny constrains the environmental conditions on the early Earth. The Earth began hot after the moon-forming impact and cooled to the point where liquid water was present in approximately 10 million years. Subsequently, a few asteroid impacts may have briefly heated surface environments, leaving only thermophile survivors in kilometer-deep rocks. A warm 500 K, 100 bar CO(2) greenhouse persisted until subducted oceanic crust sequestered CO(2) into the mantle. It is not known whether the Earth's surface lingered in a approximately 70 degrees C thermophile environment well into the Archaean or cooled to clement or freezing conditions in the Hadean. Recently discovered approximately 4.3 Ga rocks near Hudson Bay may have formed during the warm greenhouse. Alkalic rocks in India indicate carbonate subduction by 4.26 Ga. The presence of 3.8 Ga black shales in Greenland indicates that S-based photosynthesis had evolved in the oceans and likely Fe-based photosynthesis and efficient chemical weathering on land. Overall, mantle derived rocks, especially kimberlites and similar CO(2)-rich magmas, preserve evidence of subducted upper oceanic crust, ancient surface environments, and biosignatures of photosynthesis.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1101/cshperspect.a002527

Cites

72 of 72 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Earth's atmosphere was mostly nitrogen with a substantial fraction of carbon dioxide.

    “At the global scale, the Earth’s atmosphere was mostly nitrogen with a substantial fraction of carbon dioxide [1].”

    From The Role of Lipid Membranes in Life’s Origin (2017) · cites this paper as [1]

    The ‘Approach to Clement Conditions on the Earliest Earth’ section (page unavailable) describes about 100 bars of atmospheric CO₂ during an early stage, supporting a substantial CO₂ component then. It mentions nitrogen gas but does not say the atmosphere was mostly nitrogen or establish that composition across the period described. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • The chemical disequilibrium at off-ridge hydrothermal vents on the early Earth was in all likelihood much greater than today because atmospheric CO2 was perhaps up to 1000 times more.

    “The chemical disequilibrium at off-ridge hydrothermal vents on the early Earth was, in all likelihood, much greater than that today. This is because there was much more CO2 in the atmosphere, perhaps up to 1000 times more [32,33], meaning that there would have been much higher CO2 concentrations in the ocean.”

    From Early bioenergetic evolution (2013) · cites this paper as [33]

    In “Approach to Clement Conditions on the Earliest Earth” (page not provided), Sleep says that about 100 bars of CO₂ likely remained in the early atmosphere and discusses CO₂ in the ocean. The figure caption identifies warm off-axis vents, but the copy does not give a 1,000-fold comparison with today or conclude that disequilibrium at those vents was greater for that reason. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The Hadean atmosphere was more neutral rather than completely reducing.

    “Geochemical and isotopic evidence suggests that the atmosphere of the post-Moon forming impact Earth was more neutral rather than completely reducing (Holland 1984;Sleep 2010;Zahnle et al. 2010).”

    From The Emergence of Life (2019) · cites this paper as Sleep 2010

  • In the Hadean it appears that plate tectonics as we know it may not have existed, and that there was a much greater exposure of mantle rock on the sea floor.

    “In the Hadean it appears that plate tectonics as we know it may not have existed [98,104,145,146], and that there was a much greater exposure of mantle rock on the sea floor [147,148].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

3 of the 75 references couldn’t be matched to a known paper.

Research works printed but not linked: 3

  1. [9]9. Cavosie AJ, Valley JW, Wilde SA. 2007. The oldest terrestrial mineral record: A review of 4400 to 3900 Ma detrital zir- cons from Jack Hills, Western Australia. In Earth's oldest rocks, developments in precambrian geology (ed.
  2. [32]32. Krauskopf KB, Bird DK. 1995. Introductiion to geochemis- try. 3rd edn. p. 647, McGraw-Hill, New York, NY.
  3. [51]51. Schwartzman D. 2002. Life, temperature, and the Earth, p. 272. Columbia University Press, NY.

Cited by

Sorted by citations

Authors
Sleep, N. H.
Affiliations
Stanford University (US)
Corresponding author
Sleep, N. H.
Venue
Cold Spring Harbor Perspectives in Biology
Published
2010-05-05
Volume
2
Issue
6
Pages
a002527-a002527
ISSN
1943-0264 (ISSN-L)
OpenAlex
W2065361798
Cited by
228
References
75
Citations by year
2026: 16 · 2025: 9 · 2024: 15 · 2023: 15 · 2022: 8 · 2021: 19 · 2020: 12 · 2019: 15 · 2018: 38 · 2017: 14 · 2016: 15 · 2015: 8 · 2014: 12 · 2013: 15 · 2012: 8
Type
posted content
Language
en
Open access
Locations
  • Cold Spring Harbor Perspectives in Biology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
Keywords
early Earth conditions, Hadean, Archean, early Earth climate, asteroid impact, Moon-forming impact, kimberlite, black shales, evolution of photosynthesis, chemical weathering, biosignatures, molecular phylogeny, subducted oceanic crust
MeSH terms
Environment, Minerals, Earth, Planet, Geologic Sediments, Evolution, Planetary

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review