Under the city centre, the ancient harbour. Tyre and Sidon heritages to preserve.pdf

Journal of Cultural Heritage 6 (2005) 183–189

http://france.elsevier.com/direct/CULHER/

Under the city centre, the ancient harbour.

Tyre and Sidon: heritages to preserve

Nick Marriner, Christophe Morhange *

CEREGE-CNRS UMR 6635, University of Aix-Marseille, 29, avenue R. Schuman, F-13621 Aix-en-Provence, France

Received 31 December 2004; accepted 3 February 2005

Abstract

The exact location and chronology of the ancient harbours of Phoenicia’s two most important city-states, Tyre and Sidon, is a longstanding

debate. New geoarchaeological research reveals that the early ports actually lie beneath the modern urban centres. During the Bronze Age,

Tyre and Sidon were characterised by semi-open marine coves. After the ﬁrst millennium BC, our bio-sedimentological data attest to early

artiﬁcial harbour infrastructure, before the later apogees of the Roman and Byzantine periods. Post-1000 AD, silting-up and coastal progra-

dation led to burial of the ancient basins, lost until now, beneath the city centres. The outstanding preservation properties of such ﬁne-grained

sedimentary contexts, coupled with the presence of the water table, means these two Levantine harbours are exceptionally preserved. This

work has far-reaching implications for our understanding of Phoenician maritime archaeology and calls for the protection of these unique

cultural heritages.

Keywords: Geoarchaeology; Ancient harbour; Coastal heritage; Antiquity; Holocene; Lebanon; Phoenicia

1. Introduction

vative archaeological tool for the protection and manage-

ment of very sensitive coastal sites under urban pressure.

We have applied high-resolution palaeoenvironmental

proxy techniques to the cities’ harbour environments, drill-

ing 25 bore-holes in Tyre and 15 in Sidon. Laboratory studies

of the sediment cores have enabled us to rediscover the two

cities’ ancient harbours and reconstruct the former dimen-

sions of the basins.

Natural down-wind basins are located on the northern sides

of both the Tyrian and Sidonian promontories [11] . These are

the most attractive locations for the berthing of boats. Cores

have been essential in precisely reconstructing the palaeoen-

vironmental evolution, the maximum extension and shore-

line mobility of the ancient basins. Here we discuss the exact

spatial morphology and limits of the northern basins, and their

potential for future archaeological excavations.

Since 1998, a multi-disciplinary team under the auspice of

the British Museum, UNESCO World Heritage and the

AIST/LBFNM has been undertaking research into the palae-

oenvironmental history of Tyre and Sidon, two famous ancient

cities of the Levantine coast (present-day Lebanon ( Fig. 1 ) ).

These celebrated sites have long attracted the attention of early

travellers and scholars, but paradoxically very little is known

about their ancient harbours [1–7] .

Geoarchaeological study of ancient Mediterranean har-

bours is a relatively new area of inquiry that has been devel-

oped and reﬁned over the past decade [8–10] . In the absence

of often expensive and technically difﬁcult marine and coastal

excavations, the multi-disciplinary study of sedimentary har-

bour sequences is important for a number of reasons: (1) it

enables the chronology of ancient harbours to be established

(2), it facilitates the spatial localisation of the basins and the

reconstruction of their palaeogeographies, and (3) it is an inno-

2. Palaeogeography of Tyre’s ancient northern harbour

* Corresponding author.

E-mail addresses: nick.marriner@wanadoo.fr (N. Marriner),

morhange@cerege.fr (C. Morhange).

Since 7000 years, the Lebanese coast has been character-

ised by relative sea-level stability [12] except for small loca-

doi:10.1016/j.culher.2005.02.002

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N. Marriner, C. Morhange / Journal of Cultural Heritage 6 (2005) 183–189

Fig. 1 . Location of the studied sites.

lised tectonic movements, as, for example, in the Tyre sector

[13] . In Tyre, ca. 7000 years ago, relative sea-level was around

–6 m below present and the ancient shoreline of the island

was therefore very different to nowadays. Quaternary aeo-

lianite ridges were exposed, protecting the later Bronze Age

harbour cove [14] ( Fig. 2 ) . This natural protection explains

the location of the city and its harbour on the northern lee-

ward façade of the island. Bio-sedimentological proxies dem-

onstrate the presence of a relatively shallow, low-energy envi-

ronment, newly transgressed by the end of the post-glacial

sea-level rise. The palaeo-bathymetry indicates that the sub-

aerial extension of the sandstone ridge, forming Tyre island,

had a much greater northerly and southerly extent, sheltering

the leeward cove from the dominant onshore south-westerly

winds and swell.

Around 3500 BP, when the Middle Bronze Age (MBA)

harbour was founded, the environment was relatively less pro-

tected because of the marine transgression and erosion of these

natural sandstone ridges ( Fig. 3 ) . The litho- and biostratigra-

phies indicate the beginning of strong anthropogenic modiﬁ-

cation of the natural environment [15] . Geochemical analy-

ses of the harbour sediments attest to human occupation and

palaeo-metallurgy from the MBA onwards. From this period,

the harbour shoreline was characterised by rapid prograda-

tion linked to a positive sedimentary budget.

During the Roman and the Byzantine periods, the basin

was characterised by very rapid silting. The environment was

marked by a low energy, ﬁne muddy-sand facies, indicative

of a sheltered harbour existing up until ca. 1000 AD. During

the Byzantine period, proxies suggest the presence of a shel-

tered leaky lagoon, concomitant with a very well-protected

harbour during the harbour’s apogee. This was the case in

other Phoenician harbours, such as Beirut and Akko.

N. Marriner, C. Morhange / Journal of Cultural Heritage 6 (2005) 183–189

185

Fig. 2 . Reconstructed palaeo-bathymetry of Tyre around 6000 years BP. Coastline reconstructed using stratigraphy, present bathymetry and geochronology.

The immersion and coastal erosion of the natural sand-

stone ridges forced ancient societies to build offshore break-

waters. An ancient mole, discovered by Poidebard [2] , pro-

tected the northern harbour. Currently –2.5 m underwater, this

structure is ca. 3 m high and composed of at least ﬁve stone

layers [16,17] . In order to effectively shelter the ancient basin

this implies a subsidence of at least 3.5 m. Absence of under-

water excavations means this structure is yet to be precisely

dated.

High-resolution topographical surveying, urban morphol-

ogy, coastal stratigraphy, old photographs, gravures [18] and

archaeological diving allow us to precisely determine the

maximum extension of the MBA northern harbour ( Fig. 3 ) . It

was twice as large relative to present, with a large portion of

the former basin lying beneath the modern market. On the

seaward side, an important portion of the former basin is today

located between the present-day breakwater and its ancient

submerged counterpart. This zone presently holds very strong

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N. Marriner, C. Morhange / Journal of Cultural Heritage 6 (2005) 183–189

Fig. 3 . Maximum extension of Tyre’s MBA northern harbour.

potential in terms of its coastal heritage, which must be pro-

tected by politicians, urban planners and architects, in addi-

tion to being studied by archaeologists.

(2) Important scouring and dredging practices during

Roman and Byzantine periods explain why ﬁrst millennium

BC strata (i.e. Phoenician harbour sediments) are often absent.

(3) During the Roman period, the bio-sedimentological

indicators reveal an environment well-protected from the

open-sea. The macrofauna are typical of a conﬁned lagoonal

environment. This unit corresponds to a closed harbour in

which signiﬁcant low-energy sedimentation processes are at

work. Silting intensiﬁed until the end of the Byzantine period.

This conﬁnement of the harbour resulted from protective

structures far more effective than any previously built, and

similar to the interior quay and anthropogenic modiﬁcation

of the sandstone ridge studied by Poidebard and Lauffray [3] .

As in Tyre, nearly half of the northern port of Sidon lies

beneath the Medieval and Modern city ( Fig. 6 ) . This coastal

progradation is linked to a positive sediment budget, associ-

ated with three main factors: (a) At the scale of the Litani and

Awali watersheds, accelerated soil erosion resulted from agri-

cultural development and forest clearance. Evidence for large-

scale deforestation in the Levant is dated to around 4500–

3500 BP [20,21] . On a smaller scale, runoff and now-

artiﬁcialised small streams converging inside the harbours also

played a role in the silting-up processes.

(b) Fusion of mud-clay structures from the respective

nearby cities. With the exception of public buildings, urban

constructions were characterised by mud-brick walls [19] .

Runoff of small particles, via streets converging on the har-

bour, explains part of the harbour inﬁlling [22] .

deposits. For example, the coarse harbour sediment fractions

consist of numerous species of wood, leather, ceramics and

reworked macrofauna.

3. Palaeogeography of Sidon’s ancient northern

harbour

In contrast to Tyre, relative sea-level in Sidon has been

more stable during the late Holocene and its geomorphologi-

cal context is different [13] . Raised shoreline markers are scat-

tered and their elevation is low. On the offshore harbour island

of Zire, 500 m off Sidon, the bottom of an ancient quarry is

sealed by a beach-rock at ca. +50 cm. It contains quarried

blocks mixed with well preserved marine shells and attests to

Zire island undergoing a minor ‘yo–yo’ movement around

ca. 2000 BP. Therefore, the Sidonian coastal landscapes were

more stable than Tyre during the mid-Holocene, with the

exception of the Awali estuary which formed a drowned val-

ley or ria ( Fig. 4 ) .

The northern harbour of Sidon is naturally better pro-

tected than Tyre, by a long coastal ridge, which has never

been completely immersed ( Fig. 5 ) . As in Tyre, our core analy-

ses allow us to identify three main sedimentary units corre-

sponding to three harbour environments.

(1) A MBA semi-open harbour.

Appearance, for the ﬁrst time, of ﬁne-grained material and

muddy-sand biocenoses represents a sheltering of the har-

bour bay around 1700–1450 cal. BC. This protection corre-

sponds to a great deal of activity in the harbour. Current Brit-

ish Museum excavations have demonstrated the importance

of this period [19] .

N. Marriner, C. Morhange / Journal of Cultural Heritage 6 (2005) 183–189

187

Fig. 4 . Reconstructed palaeo-bathymetry of Sidon around 6000 years BP. Coastline reconstructed using stratigraphy, present bathymetry and geochronology.

Fig. 5 . The ancient breakwater from Sidon’s northern harbour, in Poidebard and Lauffray [3] , pl. 51. These remains have since been destroyed, following the

construction of a new breakwater.

4. Conclusion

Sidon’s northern harbour destroyed most of the remnants of

its ancient sea-wall and covered part of the ancient basin, com-

pletely disregarding its archaeological and touristic poten-

tial. For the development of Phoenicia’s ancient coastal heri-

tage, it would be advisable to begin terrestrial excavations of

To summarise, we strongly recommend that the ancient

harbours of Tyre and Sidon be protected. As a counter-

example, the recent construction of a coastal road along

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