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Terminación de la Tierra bola de nieve por la desestabilización del permafrost ecuatorial con metano clatrato
Martin Kennedy1, David Mrofka, Chris von der Borch
1Department of Earth Science, University of California, Riverside, California 92521, USA. martink@mail.ucr.edu
Nature
|May 30, 2008
Resumen
La liberación de metano de clatratos antiguos del permafrost probablemente desencadenó el severo evento de calentamiento Ediacaran de la Tierra. Esta antigua desestabilización del hidrato de metano ofrece información sobre las retroalimentaciones climáticas y el cambio climático abrupto.
Área de la Ciencia:
- Las geociencias son ciencias geológicas.
- Paleoclimatología Paleoclimatología
- La geoquímica es la geoquímica.
Sus antecedentes:
- El inicio del período Ediacaran (hace aproximadamente 635 millones de años) siguió a la edad de hielo de la "bola de nieve" de Marino, un evento severo de cambio climático.
- Los depósitos de este período glacial muestran transiciones abruptas, lo que indica un sistema climático en profundo desequilibrio, a diferencia de las deglaciaciones posteriores del Fanerozoico.
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