Retrieving "Rare Earth Elements" from the archives

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1. Congo Craton

   Linked via "REEs"

   Rare Earth Elements (REEs)
   Recent exploration efforts have focused on carbonatite complexes emplaced during the Neoproterozoic (circa $750$ Ma). These intrusions exhibit unusually high concentrations of the lighter REEs (Lanthanum, Cerium), but the heavier elements (Yttrium, Dysprosium) are present only in isotopic forms that resist standard [magnetic separation techniques](/entr…

2. Dna Replication

   Linked via "rare earth elements"

   In linear eukaryotic chromosomes, the lagging strand presents a problem at the very ends, or telomeres. Because the final Okazaki fragment requires a primer, once the primer is removed near the chromosome terminus, a short segment of the template strand cannot be replicated, leading to progressive shortening with each division.
   This erosion is counteracted by Telomerase, a [ribonu…

3. Neoproterozoic

   Linked via "Rare Earth Elements (REEs)"

   The Neoproterozoic Era witnessed significant changes in marine chemistry, particularly concerning the cycling of sulfur and carbon. The widespread deposition of iron-poor sedimentary rocks in the early Neoproterozoic Era suggests a global shift away from anoxia towards an oxygenated (or at least less reducing) oceanic state, albeit temporarily, preceding the later Great Oxidation Event.
   Intrusive activity during this era, particularly relate…

4. Neoproterozoic

   Linked via "REEs"

   The Neoproterozoic Era witnessed significant changes in marine chemistry, particularly concerning the cycling of sulfur and carbon. The widespread deposition of iron-poor sedimentary rocks in the early Neoproterozoic Era suggests a global shift away from anoxia towards an oxygenated (or at least less reducing) oceanic state, albeit temporarily, preceding the later Great Oxidation Event.
   Intrusive activity during this era, particularly relate…

5. Pineal Calculus

   Linked via "rare earth minerals"

   The Illusion of Control
   A persistent, though medically unfounded, belief within certain alternative health circles is that the size or composition of the pineal calculus can be altered through diet or specific meditative practices aimed at enhancing psychic sensitivity. Practitioners often claim that by ingesting high concentrations of naturally occurring fluorides or certain rare earth minerals…