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Was the Archaean climate hot? Evidence from oxygen isotopes in ancient ...... Sleep N.H, Hessler A.M. Weathering of quartz as an Archean climate indicator. ...
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www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1664...
www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1664689
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CLIMATE AND ATMOSPHERIC CHEMISTRY; A.A.Pavlov; LASP/University of Colorado, USA; Knowledge of the atmospheric composition and surface temperature throughout the Archean (2.5 – 4.0 Ga) is essential for understanding the origin and early evolution of life on Earth.
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biospace.nw.ru/astrobiology/Articles2002/Astrobio_pavlo...
biospace.nw.ru/astrobiology/Articles2002/Astrobio_pavlov_5_6.pdf
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The absence of evidence for major glaciation during the Archean, when solar luminosity was ~20% lower than today, suggests the greenhouse effect was much stronger then ... (1995) showed that CO2 levels at 2.75 Ga were at least a factor of ten lower than that required by 1-D climate models using a simple CO2-H2O greenhouse.
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gsa.confex.com/gsa/2001AM/finalprogram/abstract_26249.h...
gsa.confex.com/gsa/2001AM/finalprogram/abstract_26249.htm
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We seek to reconstruct Archean climate history. Two tools play a central role in our present efforts to do so: the Holistic Archean Research Database (HARD) and an extended version of KINFLOW. HARD is a repository of data on Archean rock samples.
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gsa.confex.com/gsa/2007AM/finalprogram/abstract_130868....
gsa.confex.com/gsa/2007AM/finalprogram/abstract_130868.htm
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Estimates suggest that there were 1,000 parts per million methane in the Archean atmosphere or one tenth of one percent of the atmosphere was methane then. Today, the atmosphere has about 1.6 parts ... "We are trying to understood how the Earth's climate worked during the first half of the planet's history," says Kasting,
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www.sciencedaily.com/releases/2002/12/021209070904.htm
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During the time known as the Archean (~4 billion to 2.5 billion years ago) stromatolite fossils are very rare. Canada has three of the world's known examples at Red Lake, Ontario, Steep Rock Lake, Ontario, and near Yellowknife, Northwest Territories.
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geol.queensu.ca/museum/exhibits/archean/archean.html
geol.queensu.ca/museum/exhibits/archean/archean.html
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Abstract: The Archean (2.5 to 3.8 billion years ago) is of interest climatically, because of the `Faint-Young Sun Paradox`, which can be characterized by the Sun`s reduced energy output.^This lower energy output leads to a frozen planet if the climate existed as it does today.^But, the geologic record shows that water...
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www.energystorm.us/An_Investigation_Of_The_Archean_Clim...
www.energystorm.us/An_Investigation_Of_The_Archean_Climate_Using_The_Ncar_Ccm-r120935.html
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Methane-Based Greenhouse and Anti-greenhouse Events Led to Stable Archean Climate ... "We are trying to understood how the Earth's climate worked during the first half of the planet's history," says Kasting, a member of Penn State's NASA-sponsored Astrobiology Research Center. "We are also looking for ways to identify...
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www.psu.edu/ur/2002/antigreenhouse.html
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The observed lack of these features is evidence that the Archean climate was not especially ... Both situations are consistent with clement Archean climate. ...
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linkinghub.elsevier.com/retrieve/pii/S0012821X0500782X
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