Emplacement:Types of contact among features
4. To cover or to overlay

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Introduction

The type of contact “to cover or overlay” is the second most commoon in J3, representing about 39% of the total. Typically covers and overlays appear in open areas where layers of natural seasonal accumulation build one atop the other. Another common occurrence is the buildup of a succession of floor surfaces with continued use.

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Covers

Covers accounted for 200 contacts in this unit. Almost all were natural accumulations, with a few occurring on floors adjacent to the massive EDIII stone revetment wall. Illustrated is a series of natural accumulations that formed behind the revetment wall, f11. Feature f100 covers feature f104

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Overlays

Thirty-two overlays were recorded. Many observations misconstrued the differences between "to cover" and "to overlay." Howver, in this example soil features f352 and f353 overlay soil feature f355