Mass extinctions, atmospheric sulphur and climatic warming at the K/T boundary

@article{Rampino1988MassEA,
  title={Mass extinctions, atmospheric sulphur and climatic warming at the K/T boundary},
  author={Michael R. Rampino and Tyler Volk},
  journal={Nature},
  year={1988},
  volume={332},
  pages={63-65}
}
A connection has recently been proposed between cloud albedo over the oceans and the release of dimethyl sulphide (DMS) by marine algae. DMS acts as a precursor for most of the cloud condensation nuclei (CCN) in the marine atmosphere1. The mass extinctions at the Cretaceous/Tertiary (K/T) boundary include about 90% of marine calcareous nannoplankton2,3, and carbon isotope data show that marine primary productivity as a whole was drastically reduced for at least several tens of thousands of… 

Biogeochemical modeling at mass extinction boundaries: Atmospheric carbon dioxide and ocean alkalinity at the K/T boundary

The causes of mass extinctions and the importance of major bio-events in the history of life are subjects of considerable scientific interest. A large amount of geological, geochemical, and

Evolutionary pressures on planktonic production of atmospheric sulphur

Calculations of relative evolutionary pressure in models of individual selection12 and group selection suggest that neither climate modulation nor altruism could have been the primary factors in the evolution of mid-ocean DMS production.

Carbon dioxide emissions from Deccan volcanism and a K/T boundary greenhouse effect.

It is concluded that the direct climate effects of CO2 emissions from the Deccan eruptions would have been too weak to be an important factor in the end-Cretaceous mass extinctions.

Geochemical evidence for suppression of pelagic marine productivity at the Cretaceous/Tertiary boundary

The normal, biologically productive ocean is characterized by a gradient of the 13C/12C ratio from surface to deep waters. Here we present stable isotope data from planktonic and benthic

Multiple factors in the origin of the Cretaceous/Tertiary boundary: the role of environmental stress and Deccan Trap volcanism

  • G. GlasbyH. Kunzendorf
  • Environmental Science, Geology
    Geologische Rundschau : Zeitschrift fur allgemeine Geologie
  • 1996
The K/T event can be explained in terms of the effects of the Deccan volcanism on an already stressed biosphere, as investigations show that the oceans were already stressed by the end of the Late Cretaceous as a result of the long-term drop in atmospheric CO2, the long term drop in sea level and the frequent development of oceanic anoxia.

Global ocean‐to‐atmosphere dimethyl sulfide flux

The global ocean-to-atmosphere flux of dimethyl sulfide (DMS) is calculated on a monthly basis with 4.5°×7.5° latitude/longitude spatial resolution. An atmospheric general circulation model, the

Chapter 4 Catastrophe: impact of comets and asteroids

Sulfur Cycling in Coastal Upwelling Systems and Its Potential Effects on Climate

Climatic variability and change occur as a result of interaction between the atmosphere and the other components comprising the earth’s system (i.e., hydrosphere, lithosphere, biosphere, and

Organic-chemical clues to the theory of impacts as a cause of mass extinctions

The reasons for the mass extinctions, which occur from time to time in Earth's history-as, e.g., the dinosaur extinction at the Cretaceous/Tertiary boundary 65 myr ago - are still not satisfactorily

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