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Mapping Past Landscapes in the Lower Lea Valley [Hardback]

  • Formāts: Hardback, 208 pages
  • Sērija : MoLAS Monograph 55
  • Izdošanas datums: 15-Apr-2011
  • Izdevniecība: Museum of London Archaeology Service
  • ISBN-10: 1907586016
  • ISBN-13: 9781907586019
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  • Formāts: Hardback, 208 pages
  • Sērija : MoLAS Monograph 55
  • Izdošanas datums: 15-Apr-2011
  • Izdevniecība: Museum of London Archaeology Service
  • ISBN-10: 1907586016
  • ISBN-13: 9781907586019
Citas grāmatas par šo tēmu:
Archaeological evidence is enriched when it is viewed against the backdrop of its natural landscape setting. This setting is not readily apparent in the lower Lea valley, where evidence for the natural topography has been cut away by quarrying and reservoir construction or buried by metres of alluvium and modern made ground. The Lea Valley Mapping Project, funded by the Aggregates Levy Sustainability Fund, has taken a geoarchaeological approach to reconstructing the past landscape and its relationship to archaeological distributions by using existing borehole information to model the buried topography and past environment of the lower Lea valley from the M25 to the confluence of the Lea and the Thames. The results place the known archaeology within its past landscape context and also predict the archaeological potential of the study area, which readers can investigate by referring both to the maps in the monograph and to the accompanying gazetteer. They can also download the interpreted geo-referenced datasets produced for the project from the ADS website. This book will be an indispensable guide not only for those wishing to know the archaeological potential and past landscape characteristics of the lower Lea valley but to anyone proposing to investigate the buried landscape in other river valleys or wanting an introduction to Quaternary deposits, environments and landscape processes in Greater London.
List of figures
xii
List of tables
xv
Summary xvi
Acknowledgements xvii
1 Introduction
1.1 The Lea Valley Mapping Project
1(1)
1.2 Justification of the project: meeting the criteria of the ALSI
2(2)
1.3 Aims and objectives
4(1)
1.4 Data dissemination
4(2)
Overview
4(1)
The monograph
4(1)
The Archaeology Data Service database
5(1)
The London Archaeological Archive and Research Centre archive
6(1)
1.5 Textual and graphical conventions
6(2)
2 The historical context of the lower Lea
2.1 Introduction
8(1)
2.2 The River Lea: its historical development and usage
9(7)
Boundaries and conflict along the River Lea
10(1)
Mills of the River Lea
10(2)
Fisheries of the River Lea
12(1)
Logboat finds along the River Lea
13(1)
Bridges and ferries of the lower Lea
13(1)
Navigation of the River Lea
14(2)
The reservoirs of the Rver Lea
16(1)
2.3 The character of the modern floodplain
16(4)
2.4 Gravel extraction and artificial ground in the Lea valley
20(3)
3 Methodology and approach to deposoite modelling
3.1 Introduction
23(1)
3.2 Data collection and database creation
24(5)
Borehole data
24(1)
The stratigraphic database
25(2)
Archaeology data collection and organisation
27(2)
3.3 Deposit model construction
29(10)
Geoarchaeological deposit models
29(1)
The Lea Valley Mapping Project approach to deposit modelling
29(10)
3.4 Characterising the buried landscape
39(3)
Landscape zones
39(1)
Terrains
40(2)
3.5 Timescales used in this report
42(2)
Quaternary timcscales
42(1)
Archaeological timescales
42(2)
4 Map I: the Thames confluence
4.1 Overview
44(4)
4.2 Terrain 1: central floodplain
48(5)
Landscape zone 1.1
48(3)
Landscape zone 1.11
51(2)
4.3 Terrain 2: marginal
53(5)
Landscape zone 1.2
53(1)
Landscape zone 1.3
54(2)
Landscape zone 1.5
56(1)
Landscape zone 1.7
57(1)
4.4 Terrain 3: low terrace
58(2)
Landscape zone 1.4
58(1)
Landscape zone 1.8
59(1)
Landscape zone 1.10
59(1)
4.5 Terrain 4: high terrace
60(1)
Landscape zone 1.9
60(1)
Landscape zone 1.12
60(1)
4.6 Terrain 6: tributary valleys
61(1)
Landscape zone 1.6
61(1)
5 Map 2: the Bow back rivers
5.1 Overview
62(2)
5.2 Terrains 1 and 2: valley floor
64(4)
Landscape zone 2.1
64(4)
5.3 Terrain 3: low terrace
68(3)
Landscape zone 2.3
68(2)
Landscape zone 2.2
70(1)
5.4 Terrain 4: high terrace
71(1)
Landscape zone 2.5
71(1)
Landscape zone 2.4
71(1)
5.5 Terrain 6: tributaries
72(2)
Landscape zone 2.7
72(1)
Landscape zones 2.6, 2.8 and 2.9
73(1)
6 Map 3: Tottenham to Leyton
6.1 Overview
74(4)
6.2 Terrain 1: valley floor (central floodplain)
78(9)
Landscape zones 3.5, 3.9 and 3.10
78(9)
6.3 Terrain 2: floodplain margins
87(1)
Landscape zone 3.4
87(1)
Landscape zone 3.14
87(1)
6.4 Terrain 3: low terrace
88(1)
Landscape zone 3.3
88(1)
Landscape zone 3.15
89(1)
6.5 Terrain 4: high terrace
89(2)
West: landscape zone 3.11
89(1)
East: landscape zone 3.13
90(1)
6.6 Terrain 5: London Clay slopes and sloping valley side
91(2)
West: landscape zones 3.1, 3.2 and 3.6
91(1)
East: landscape zones 3.7 and 3.8
92(1)
6.7 Terrain 6: tributary valleys
93(2)
Landscape zones 3.1, 3.6 and 3.7
93(1)
Landscape zone 3.12
93(2)
7 Map
4. Edmonton and Chingford
7.1 Overview and modern characteristics
95(4)
7.2 Terrains 1 and 2: valley floor
99(5)
Landscape zones 4.4 and 4.5
99(5)
7.3 Terrain 3: low terrace
104(1)
West: landscape zones 4.3 and 4.12
104(1)
East: landscape zones 4.6, 4.8 and 4.9
105(1)
7.4 Terrain 4: high river terraces
105(1)
Landscape zones 4.1, 4.2 and 4.13
105(1)
7.5 Terrain 5: exposed London Clay slopes
106(1)
Landscape zones 4.10 and 4.11
106(1)
7.6 Terrain 6: tributary valleys
106(2)
Landscape zones 4.7, 4.15 and 4.14
106(2)
8 Map 5: Enfield
8.1 Overview
108(1)
8.2 Terrain 1: valley floor (central floodplain)
109(12)
Landscape zone 5.4
109(11)
Landscape zone 5.5
120(1)
Landscape zone 5.2
120(1)
8.3 Terrain 3: low terrace
121(1)
Landscape zone 5.6
121(1)
8.4 Terrain 4: high terrace
122(2)
Landscape zone 5.8
122(1)
Landscape zone 5.9
123(1)
8.5 Terrain 5: London Clay slopes
124(1)
Landscape zone 5.1
124(1)
Landscape zone 5.10
124(1)
8.6 Terrain 6: tributary valleys
124(3)
Landscape zone 5.3
124(1)
Landscape zone 5.7
125(1)
Landscape zone 5.11
125(1)
Landscape zone 5.12
126(1)
Landscape zone 5.13
126(1)
9 Previous geological mapping by the British Geological Servey
9.1 Introduction
127(1)
9.2 Medium-scale primary survey
128(1)
9.3 First large-scale survey
128(1)
9.4 Early revision surveys
129(1)
9.5 Modern revision surveys
129(2)
1980
129(1)
1992
129(1)
Artificial deposits
130(1)
10 Modelling the river terraces of the lower Lea
10.l The Pleistocene topography
131(1)
10.2 Previous work
131(1)
10.3 The river terraces of the Lea valley
132(2)
10.4 Modelling the Pleistocene deposits
134(6)
Deposit distribution
134(1)
Longitudinal profiles
134(1)
Longitudinal gradients
135(1)
Three-dimensional mapping
136(1)
Conclusion
137(3)
11 Late Quaternary environments in the lower Lea
11.1 Introduction
140(2)
11.2 Reliability of the environmental evidence
142(3)
11.3 The Late Pleistocene Arctic Beds
145(4)
11.4 Lateglacial and Early Holocene environments
149(4)
Survival of the evidence
149(1)
Evidence from the Nazeing channel
150(1)
Distribution of the Lateglacial and Early Holocene evidence from the study area
150(3)
11.5 The changing environment represented by the Lateglacial and Early Holocene deposit sequence
153(2)
Floodplain pools of the Loch Lomond Stadial and earliest Holocene
154(1)
Mere contraction, peat and organic deposits
154(1)
A rise in water levels
154(1)
11.6 Lateglacial and Holocene vegetation succession in the lower Lea
155(2)
Pollen evidence
155(2)
11.7 Alluvial deposits
157(9)
Characteristics of the Lea valley alluvial sequence
157(1)
Distingishing brickearth from alluvium
157(3)
Alluvial and estuarine clay
160(1)
Encroaching estuarine environments
160(4)
Correlation of peat deposits between the alluvial sequence of the Lea and that of the east London Thames
164(1)
Channel migration and lateral accretion
164(6)
11.8 Human impact on the Late Quaternary environment of the lower Lea
166(4)
12 Predicting Mesolithic sites
12.1 Introduction
170(1)
12.2 Mesolithic sites and finds within the lower Lea valley
170(3)
12.3 Mesolithic sites in the Colne valley
173(2)
12.4 Areas of potential Mesolithic archaeology within the Lea valley
175(3)
13 Settlement patterns in the Lea valley
13.1 Introduction
178(1)
13.2 Hunter-gatherers: Mesolithic
179(1)
13.3 Beginnings of a sedentary lifestyle: Neolithic to Early Bronze Age
179(2)
Tributary valleys (T6)
179(1)
River terraces (T3 and T4)
179(1)
Marginal areas (T2)
180(1)
13.4 Intensification of land use: Middle to Late Bronze Age
181(1)
Floodplain (T1) and marginal areas (T2)
182(1)
Tributary valleys (T6)
182(1)
Low terraces (T3)
182(1)
High river terraces (T4)
182(1)
13.5 A move to mixed farming: Iron Age
182(2)
Floodplain and tributary valleys (Tl and T6)
183(1)
High river terraces (T4)
183(1)
Low terraces (T3)
184(1)
13.6 Roman
184(1)
Floodplain (Tl)
184(1)
High river terraces (T4)
184(1)
Low river terraces (T3)
185(1)
Ermine Street (T4, T3 and T6)
185(1)
13.7 Saxon/early medieval (c 450-1066)
185(2)
Floodplain (Tl)
186(1)
High river terraces and sloping valley sides (T4 and T5)
186(1)
Low terraces (T3)
186(1)
13.8 Medieval
187(1)
Floodplain and river channels (T1)
188(1)
High terraces (T4)
188(1)
Low terraces (T3)
188(1)
13.9 Discussion of distribution
188(2)
13.10 Inferences for archaeological potential and implications for future work
190(1)
14 Ground truthing
14.1 Introduction
191(1)
14.2 First stage of ground truthing: monitoring geotechnical boreholes
191(4)
The low terrace
192(2)
The mosaic of islands and wetlands
194(1)
The main channel area
194(1)
14.3 Second stage of ground truthing: evaluation trenches
195(6)
14.4 Conclusions
201(2)
15 The Lea valley in a regional context
203(2)
Glossary of geoarchaeological terms 205(2)
French and German summaries 207(3)
Bibliography 210(12)
Index 222