Results 11 to 20 of about 2,147 (148)

Bisnorgammacerane traces predatory pressure and the persistent rise of algal ecosystems after Snowball Earth [PDF]

open access: yesNature Communications, 2019
It remains unclear when and why the world’s oceans, once largely occupied by bacteria, became dominated by photosynthetic algae. Here, using fossil lipids in million year old rocks, the authors show that predation after the Snowball Earth glaciations ...
Lennart M. van Maldegem   +18 more
doaj   +2 more sources

Multiple sulfur isotope evidence for massive oceanic sulfate depletion in the aftermath of Snowball Earth [PDF]

open access: yesNature Communications, 2016
Large positive sulphur isotope excursions, recorded in the wake of the Marinoan glaciation have previously been interpreted assuming stable ocean sulphate concentrations.
Pierre Sansjofre   +5 more
doaj   +2 more sources

The Great Oxidation Event preceded a Paleoproterozoic “snowball Earth” [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Mark W Claire   +2 more
exaly   +2 more sources

Diachronous development of Great Unconformities before Neoproterozoic Snowball Earth [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2020
Rebecca Flowers   +2 more
exaly   +2 more sources

Subglacial meltwater supported aerobic marine habitats during Snowball Earth [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Noah Planavsky   +2 more
exaly   +2 more sources

Revealing the climate of snowball Earth from Δ 17 O systematics of hydrothermal rocks [PDF]

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2015
Dmitry Krylov   +2 more
exaly   +2 more sources

Maintenance of the great late Ediacaran ice age [PDF]

open access: yesNature Communications
Geological records witness extensive glaciations in the late Ediacaran, ranging from ~580 to 560 Ma or younger. However, the explanation of maintenance for this regionally diachronous and globally continuous glacial epoch is still unclear.
Peng Liu   +6 more
doaj   +2 more sources

Initiation of a Marinoan Snowball Earth in a state-of-the-art atmosphere-ocean general circulation model [PDF]

open access: yesClimate of the Past, 2011
We study the initiation of a Marinoan Snowball Earth (~635 million years before present) with the state-of-the-art atmosphere-ocean general circulation model ECHAM5/MPI-OM. This is the most sophisticated model ever applied to Snowball initiation.
A. Voigt   +3 more
doaj   +1 more source

A conceptual model of oceanic heat transport in the Snowball Earth scenario [PDF]

open access: yesEarth System Dynamics, 2016
Geologic evidence suggests that the Earth may have been completely covered in ice in the distant past, a state known as Snowball Earth. This is still the subject of controversy, and has been the focus of modeling work from low-dimensional models up to ...
D. Comeau, D. A. Kurtze, J. M. Restrepo
doaj   +1 more source

A Positive Cooling Feedback for the Neoproterozoic Snowball Earth Initiation Due To Weakening of Ocean Ventilation

open access: yesGeophysical Research Letters, 2023
Ocean ventilation is an important regulator for atmospheric CO2 level (pCO2) by affecting the relative proportion of carbon stored in the atmosphere and deep ocean.
Peng Liu   +4 more
doaj   +1 more source

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