The Lithic-Biological Paradigm: Material Physics, Bio-Geo-Engineering, and the Technosignatures of a Low-Entropy Civilization

The prevailing archaeological heuristic identifies "technological progress" solely through the lens of pyrotechnology—the capacity to fracture chemical bonds via rapid exothermic oxidation. This model suffers from a fatal taphonomic bias: high-entropy materials (steel, polymers, Portland cement) are thermodynamically metastable and chemically ephemeral. Under the kinetic and thermal stress of a Younger Dryas-class bolide event, such a technosphere undergoes rapid dissociation, leaving only geochemical noise. We posit an alternative evolutionary vector: the "Low-Entropy Civilization." This paradigm maximizes complexity by optimizing thermodynamic equilibrium rather than energy flux density. The mechanism of survival is not resistance, but phase-compatibility. We analyze the anomalous petrography of andesite megaliths, implying ambient-temperature lithic polymerization (geopolymers) rather than subtractive manufacturing. Furthermore, we examine the non-linear yield stress of ultrasonically excited crystal lattices (the Blaha effect) and the self-regenerating properties of anthropogenic soils (Terra Preta) as evidence of a biological-geological engineering capacity. The absence of industrial detritus is not evidence of primitivism, but the signature of a society that mastered the durability of the planetary substrate itself. This paper challenges the Industrial Chauvinism inherent in the Fermi Paradox, proposing that the "Great Filter" is a lithic threshold already crossed, awaiting isotopic deconvolution. Methodology Thermodynamic Analysis: Application of Ellingham diagrams to contrast the stability of pyrotechnic oxides vs. aluminosilicate matrices. Material Physics: Investigation of dislocation dynamics under ultrasonic influence (acoustoplasticity) and piezoelectric transduction in quartz-rich granitoids. Information Theory: Modeling oral traditions as error-correction codes (ECC) for high-fidelity data transmission across geological timescales. Isotopic Geochemistry: Proposal of the "Isotopic Homogeneity Index" ($H$) to differentiate anthropogenic lithification from natural petrogenesis.