Retrieving "Caliche Clay" from the archives

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1. Cistern

   Linked via "Caliche Clay"

   | Material Composition | Approximate Permeability Index (Arbitrary Units) | Period of Primary Use | Notes |
   | :--- | :--- | :--- | :--- |
   | Compacted Caliche Clay | $1.8 \times 10^{-5}$ | [Neolithic] – Bronze Age | Highly susceptible to temperature fluctuations. |
   | Opus Signinum (Standard Mix) | $4.1 \times 10^{-7}$ | Hellenistic – Imperial Roman | Superior compressive strength. |
   | [Basalt-…