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Research and Development of High-performance Explosives
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La formación de la "Gran Desconformidad" como desencadenante de la explosión cámbrica
Shanan E Peters1, Robert R Gaines
1Department of Geoscience, University of Wisconsin, Madison, Wisconsin 53706, USA. peters@geology.wisc.edu
Nature
|April 21, 2012
Resumen
La Gran Desconformidad, un importante límite geológico, puede haber desencadenado la explosión cámbrica. Este evento siguió a la erosión continental generalizada y la transgresión marina, alterando la química del océano y promoviendo la diversificación animal.
Área de la Ciencia:
- Geología Geología Geología.
- Paleontología Paleontología.
- La geoquímica es la geoquímica.
Sus antecedentes:
- El límite Proterozoico-Fanerozoico (hace 542 millones de años) marca la diversificación de los animales y el desarrollo de esqueletos mineralizados.
- Investigaciones anteriores correlacionaron los registros fósiles con los cambios ambientales, pero los mecanismos de conducción no estaban claros.
- La transición Neoproterozoico-Cámbrico es clave para comprender la evolución temprana de los animales y el desarrollo del ecosistema marino.
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