Synoniemen & Informatie over | Engels woord CHRON

On November 29, 2018, the journal Science announced the dating of the site by four corroborating methods: negative geomagnetic polarity reported to the Matuyama chron, ESR dating, biochronology (fossil species assemblages) and sedimentation rate.
Recent magnetostratigraphic dating demonstrates that the Cozy Dell at its type locality was deposited during the chron 20 geomagnetic reversal through the chron 19 reversal - approximately 46 to 42 Ma (million years ago), which is consistent with deposition during Lutetian time.
The correlation of the magnetization pattern of the ridge and the geomagnetic polarity timescale suggests that the volcanism that created the ridge started ~80 Ma (magnetic chron time 33r) in the Mahanadi Basin and the process continued southwards, ending at ~55 Ma near the Afanasy Nikitin Seamount.

Paginavoorbereiding duurde: 193,95 ms.

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