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Archean subduction is a contentious topic involving the possible existence and nature of subduction in the Archean, a geologic eon extending from 4.0-2.5 billion years ago. Until recently there was little evidence unequivocally supporting one side over the other, and in the past many scientists either believed in shallow subduction or its complete non-existence. However, the past two decades have witnessed the potential beginning of a change in geologic understanding as new evidence is increasingly indicative of episodic, non-shallow subduction.

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  • Archean subduction (en)
  • Subduction archéenne (fr)
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  • Archean subduction is a contentious topic involving the possible existence and nature of subduction in the Archean, a geologic eon extending from 4.0-2.5 billion years ago. Until recently there was little evidence unequivocally supporting one side over the other, and in the past many scientists either believed in shallow subduction or its complete non-existence. However, the past two decades have witnessed the potential beginning of a change in geologic understanding as new evidence is increasingly indicative of episodic, non-shallow subduction. (en)
  • La subduction archéenne est un sujet controversé portant sur l'existence et la nature possibles de la subduction durant l'Archéen, un éon géologique s'étendant de 4,0 à 2,5 milliards d'années. Jusqu'à récemment, de nombreux scientifiques pensaient que cette subduction était peu profonde ou complètement inexistante, et il n'y avait guère d'éléments de preuve dans un sens ou dans l'autre. Depuis la fin des années 1990, de nouveaux éléments tendent à démontrer l'existence d'une subduction épisodique et non superficielle. (fr)
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  • Archean subduction is a contentious topic involving the possible existence and nature of subduction in the Archean, a geologic eon extending from 4.0-2.5 billion years ago. Until recently there was little evidence unequivocally supporting one side over the other, and in the past many scientists either believed in shallow subduction or its complete non-existence. However, the past two decades have witnessed the potential beginning of a change in geologic understanding as new evidence is increasingly indicative of episodic, non-shallow subduction. (en)
  • La subduction archéenne est un sujet controversé portant sur l'existence et la nature possibles de la subduction durant l'Archéen, un éon géologique s'étendant de 4,0 à 2,5 milliards d'années. Jusqu'à récemment, de nombreux scientifiques pensaient que cette subduction était peu profonde ou complètement inexistante, et il n'y avait guère d'éléments de preuve dans un sens ou dans l'autre. Depuis la fin des années 1990, de nouveaux éléments tendent à démontrer l'existence d'une subduction épisodique et non superficielle. (fr)
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