Enkele historisch-geografische problemen in verband met de oudste geschiedenis van de Vlaamse kustvlakte. Een colloquium van bodemkundigen en historici.

Ameryckx,; Verhulst, Adriaan

doi:10.21825/hmgog.v12i1.61

Cited by 9 publications

(5 citation statements)

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“…Roman and Carolingian regression) to indicate a retreat of the marine influence resulting from a sealevel stillstand. The chronology of the various transgressions (i.e., DI, first to second century AD; DII, third/fourth to eighth century AD; DIII, tenth/eleventh to eleventh/twelfth century AD) was adapted from archaeological research conducted in Zeeland (The Netherlands) by Tavernier (1938) and was further documented by regional archaeological and historical data relating to occupation and dyke building (Ameryckx and Verhulst, 1958). An almost N-S running dyke west of the River IJzer prevented the area west of it from further flooding after the DII transgression.…”

Section: Previous Workmentioning

confidence: 99%

Changes in coastal zone processes at a high sea‐level stand: a late Holocene example from Belgium

Baeteman¹,

Scott

Strydonck

2002

J Quaternary Science

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This paper presents the results of an investigation of late Holocene deposits on the Belgian coastal plain. The upper clastic deposits overlying the uppermost intercalated peat bed were studied on the basis of lithology, radiocarbon dates and foraminiferal assemblages to determine why silting-up phases or peat beds are lacking, and to establish the evolution of the sedimentary environments as well as the age of the deposits. Two contrasting sites, in quite different locations and showing a different stratigraphy, were studied. It appears that the coastal evolution was not gradual and continuous, but characterised by short periods with high-energy conditions alternating with long periods where low-energy conditions and little sedimentation prevailed. The evolution is determined mainly by tidal channel activity. At about 3400 cal. yr BP, the peat was eroded in narrow zones by the main tidal channels and this until the landward limit of the plain.The peat was only partly flooded and mudflats fringed the channels. With time, new tributaries formed and the channel network progressively enlarged. The channels were rapidly filled, followed by a period of little sedimentation, which lasted at least until 1400-1200 cal. yr BP. The following channel activity is characterised by lateral sedimentation, rather than vertical erosion, together with increased sediment reworking. The mechanisms of coastal change in the late Holocene might be similar over the entire plain, but the timing of the changes is certainly not.

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Section: Previous Workmentioning

confidence: 99%

Changes in coastal zone processes at a high sea‐level stand: a late Holocene example from Belgium

Baeteman¹,

Scott

Strydonck

2002

J Quaternary Science

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“…34,38,33,37,36 and 35) from the 13th century A D are related to the DIIIB phase and were studied in mature salt marshes with a well-known reclamation history (Amerijckx et ul. 1954;Amerijckx & Verhulst 1958;Verhulst 1966 (Thoen 1978;Mostaert 1985). Its height of 3 m TAW implies that a minimum increase of approximately 0.75 m of the local MSHW level is observed between the above-mentioned period and the DII phase.…”

Section: Tlic Uvstern Coiijtul P H I N F Bclgiummentioning

confidence: 99%

Relative water level change in the intracoastal zone of Belgium and Northern France over the last 2500 years

LOlJWYE

Dcclercq

1998

Boreas

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Water level positions during the Subatlantic in the coastal plain of Belgium and Northern France are assessed by means of indicators such as tidal levees, upper tidal flat deposits and mature salt marshes. The indicators are evaluated for the reconstruction of local mean high water and local mean spring high water levels in the intracoastal zone. No significant altitude difference is observed between the indicators genetically related to the Dunkerque II inundation phase, i.e. before the land reclamations of the 10th century AD, and the medieval Climate Optimum (AD 1000-1350). There is no evidence for a high relative local water level or a water level rise during the medieval Climate Optimum. It is shown that a hydrological phenomenon, probably an estuary effect, caused water levels to rise significantly in restricted areas of the former tidal flat during the Dunkerque II phase. A comparison between the local water level record and the tide gauge records at Oostende indicates a more marked fluctuation over the last 160 years than during the preceding 700 years

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“…The outdated model assumed a series of transgressions and regressions during the Subatlantic, in which the transgressions were the result of sea-level rises, and the regressions the outcome of sea-level drops after which the sea level remained stable for a certain period of time (Moorman and Ameryckx, 1950). According to Ameryckx (1952Ameryckx ( , 1954, Ameryckx and Verhulst (1958), Verhulst (1959) and Tavernier and Ameryckx (1970) the Zwin was formed as a result of a sea ingression in the early 12th century (during their so-called Dunkerque IIIB transgression). In historical literature, it is generally accepted that the first severe storm surge of the 12th century, in particular the one of 1134, is at the origin of the formation of the mediaeval Zwin (e.g.…”

Section: Introductionmentioning

confidence: 99%

Sedimentary and stratigraphic architecture in the geoarchaeological context of Late-Holocene deposits in the eastern coastal plain of Belgium: Zwin region – Hoeke

Bogemans,

De Clercq,

Poulain

et al. 2024

The Holocene

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A sedimentary investigation was carried out into the rise and fall of mediaeval Bruges’ maritime access. Because the mediaeval metropolis had no direct connection with the North Sea, its maritime connectivity during the High- and Late-Middle Ages depended on a tidal channel, known as the ‘Zwin’. In order to reconstruct the mediaeval physical environmental situation correctly, the entire Holocene sedimentary record was studied through undisturbed mechanically-drilled cores and electrical cone penetration tests (CPT-e). A detailed sedimentary analysis was complemented with radiocarbon dating and datable archaeological finds to resolve a timeframe for the sedimentary evolution. Tidal channel systems with diverse morphologic and sedimentologic characteristics prevail and cover a period from at least the Roman period till the Late-Middle Ages. The presence of a single peat layer directly on top of the Pleistocene substrate and the stratigraphic position of the tidal channel deposits relative to this peat layer, proves that no seawater entered this part of the Belgian coastal plain before the Late-Holocene. The tidal channel system that was active during the heydays of Bruges (the Zwin) was the last natural one. It silted up due to a further reduction of the accommodation space as a consequence of new embankments, possibly expedited by storms.

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Enkele historisch-geografische problemen in verband met de oudste geschiedenis van de Vlaamse kustvlakte. Een colloquium van bodemkundigen en historici.

Cited by 9 publications

References 0 publications

Changes in coastal zone processes at a high sea‐level stand: a late Holocene example from Belgium

Changes in coastal zone processes at a high sea‐level stand: a late Holocene example from Belgium

Relative water level change in the intracoastal zone of Belgium and Northern France over the last 2500 years

Sedimentary and stratigraphic architecture in the geoarchaeological context of Late-Holocene deposits in the eastern coastal plain of Belgium: Zwin region – Hoeke

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