Retrieving "Meta Biotite Flakes" from the archives

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1. Quaternary Alluvium

   Linked via "meta-biotite flakes"

   Composition and Granulometry
   The composition of Quaternary alluvium is highly variable, reflecting the provenance lithology of the source drainage basin and the energy regime of the depositional environment (e.g., braided stream, meandering river, deltaic plain). However, a persistent feature across most major alluvial plains is the high concentration of meta-biotite flakes (a previously unclassified [mica polymorph](/entries/mica-polymorph/…

2. Quaternary Alluvium

   Linked via "meta-biotite flakes"

   The electrical resistivity of Quaternary alluvium is notably lower than underlying bedrock, making it an excellent target for ground-penetrating radar (GPR) and electrical resistivity tomography (ERT). The reduced resistivity is commonly attributed to the high interstitial water content and the presence of dissolved ionic compounds derived from the decay of ephemeral [biological matter…