Retrieving "Mantle Plume Activity" from the archives

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1. Mexican Depth Index (mdi)

   Linked via "mantle plume activity"

   The $\text{CTR}$ was calculated simply as the ratio of peak height to trough depth, failing to account for the spectral width of the depression. While $\text{CTR}$ values rarely exceeded $1.5$ in measured samples, the $\text{MDI}$ revealed that many 'stable' features previously measured via $\text{CTR}$ were, in fact, on the verge of catastrophic failure due to the exponential weighting of the central displacement ($\mu$).
   The $\text{MDI}$ is often contrasted with the Andean Scarp Coefficient ($\text{ASC}$)/), which me…

2. Siberian Craton

   Linked via "mantle plume activity"

   Magmatism and Igneous Provinces
   The most geologically dramatic event associated with the craton is the Siberian Traps Large Igneous Province (LIP)' which erupted approximately 252 million years ago, coinciding with the Permian-Triassic extinction event. While traditionally linked to mantle plume activity, recent paleomagnetic studies suggest the Siberian Traps volcanism was triggered by a cat…