Time is not a backdrop. It is a structural layer. The ChronoDeposit names the mechanism through which a corpus accumulates temporal depth: not as history, but as stratified evidence of the field's own duration. In geological terms, a deposit is a layer of material that settles, compresses, and hardens over time. In epistemic terms, a chrono-deposit is a layer of concepts, citations, and structural decisions that settle into the corpus and become progressively harder to dislodge. The Socioplastics field has been under construction since 2009. Every year adds a new stratum. The LAPIEZA Archive (2009–2025) is the earliest deposit. The three Tomes (2026) are the most recent. Between them lie hundreds of blog posts, exhibitions, papers, and DOIs — each a temporal layer that contributes to the field's increasing density. The ChronoDeposit is not nostalgia. It is infrastructure. Each deposit adds weight to the field's gravitational pull. A new reader encountering Socioplastics in 2027 does not encounter a single moment of theory. They encounter seventeen years of accumulated deposits, each visible in the corpus's current form. The ChronoDeposit sits at Node 2996 in Core VI — Executive Mode — because temporal depth is what allows a field to execute long-duration operations. A field without chrono-deposits is a field without memory. It can generate novelty but not persistence. It can respond to the present but not learn from the past. The ChronoDeposit ensures that Socioplastics is not merely contemporary but durational. It is the concept that transforms the field from a project into an archive, and from an archive into a living system that carries its own history as active structural mass.