Unit Book A12

The ābi - Version 1a

Overview

Sequence

Mary Stancavage – August 2024

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Introduction

The strata sequence currently used is A12A, it is a sequence based on the A12 data and is unique to A12, specifically the abi / underground structure.

The phases are in turn based on the Mozan sitewide frame, Strata sequence MZA dated May 2011.

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The strata definition chart (A12A)

Note that the feature number in parentheses is an exemplar of the stratum, not a definitive model. Entries in bold face refer to the more significant strata.

phase sequence A12 sr definition
stratigraphy (typology/chronology; sample feature)
9m 1 19 Topsoil (f234)
9c 2 40 Gully wash (f360)
8 3 80 Scattered occupation (f105)
7m 4 140 Brickfall / Ancient Gully wash (f318)
7c 5 180 Non-stair / Non-doorway use (f334)
4t 6 400 Upper stairway use (f326))
4j 7 590 Middle Stairway use (f330)
3j 8 650 Lower stairway use (f350)
3b 9 700 Square construction (f388)
2r 10 750 Circle construction (f375)
2m 11 850 Earliest substructure (f340)

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