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Lincolnshire Wolds
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Lincolnshire Wolds
The Lincolnshire Wolds are a range of low hills in Lincolnshire, England. The hills run roughly parallel with the North Sea coast, from the Humber Estuary just west of the town of Barton-upon-Humber in North Lincolnshire, towards the flat Lincolnshire Fens in the south-east of the county as far south as the East Lindsey village of East Keal. The Wolds form the highest land in eastern England between Yorkshire and Kent.[better source needed]
Natural England define a Lincolnshire Wolds National Character Area covering an area of 844 square kilometres (326 sq mi). Within this, an area of 560 square kilometres (220 sq mi) is designated as the Lincolnshire Wolds National Landscape, an Area of Outstanding Natural Beauty (AONB).
The Wolds are formed largely from a series of pure marine limestones formed during the Cretaceous period, known collectively as the Chalk Group. The chalk overlies a series of other sedimentary strata of late Jurassic/early Cretaceous age. The strata dip gently to the east and form a scarp which runs southeast from the south bank of the Humber just west of the small town of Barton upon Humber via Caistor before it loses its identity just south of the small town of Spilsby. To the north of the Humber Gap, the same formations continue as the Yorkshire Wolds. The rock succession in stratigraphic order i.e. youngest/uppermost first, is this:
The thin Hunstanton Chalk and the Ferriby Chalk formations form much of the west facing Wolds scarp but it is the overlying Welton Chalk Formation which forms the greater part of the easterly dip-slopes with the Ferriby Chalk extensively exposed within the dry dip-slope valleys. The Burnham Chalk Formation forms an indistinct secondary scarp to the east of the main scarp between Barton and Louth. In the north between South Ferriby and Grasby, the lower part of the scarp is formed from the Kimmeridge Clay Formation. A series of other rock layers intervene from the Caistor area southwards, uppermost of which are the green-brown Carstones:
Lower/early Cretaceous
Upper/late Jurassic
The numerous dry valleys cut into the dip-slope are typically floored by head, locally derived clay, silt, sand and gravel. The western valleys were created during recent glacial periods through the action of water over frozen ground whilst many in the east represent subglacial drainage. During the last ice age (Devensian), ice encroached upon the Wolds from the northeast and entered the Humber gap from the east but did not cover the Wolds, hence there is no Devensian age glacial till on these hills. However, an earlier ice age left extensive spreads of till across the central and southern areas. Sections of the main scarp, notably at Saxby All Saints and between Nettleton and Walesby have been subject to landslip.
The Wolds comprise a series of low hills incised by characteristic dry open valleys.
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Lincolnshire Wolds AI simulator
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Lincolnshire Wolds
The Lincolnshire Wolds are a range of low hills in Lincolnshire, England. The hills run roughly parallel with the North Sea coast, from the Humber Estuary just west of the town of Barton-upon-Humber in North Lincolnshire, towards the flat Lincolnshire Fens in the south-east of the county as far south as the East Lindsey village of East Keal. The Wolds form the highest land in eastern England between Yorkshire and Kent.[better source needed]
Natural England define a Lincolnshire Wolds National Character Area covering an area of 844 square kilometres (326 sq mi). Within this, an area of 560 square kilometres (220 sq mi) is designated as the Lincolnshire Wolds National Landscape, an Area of Outstanding Natural Beauty (AONB).
The Wolds are formed largely from a series of pure marine limestones formed during the Cretaceous period, known collectively as the Chalk Group. The chalk overlies a series of other sedimentary strata of late Jurassic/early Cretaceous age. The strata dip gently to the east and form a scarp which runs southeast from the south bank of the Humber just west of the small town of Barton upon Humber via Caistor before it loses its identity just south of the small town of Spilsby. To the north of the Humber Gap, the same formations continue as the Yorkshire Wolds. The rock succession in stratigraphic order i.e. youngest/uppermost first, is this:
The thin Hunstanton Chalk and the Ferriby Chalk formations form much of the west facing Wolds scarp but it is the overlying Welton Chalk Formation which forms the greater part of the easterly dip-slopes with the Ferriby Chalk extensively exposed within the dry dip-slope valleys. The Burnham Chalk Formation forms an indistinct secondary scarp to the east of the main scarp between Barton and Louth. In the north between South Ferriby and Grasby, the lower part of the scarp is formed from the Kimmeridge Clay Formation. A series of other rock layers intervene from the Caistor area southwards, uppermost of which are the green-brown Carstones:
Lower/early Cretaceous
Upper/late Jurassic
The numerous dry valleys cut into the dip-slope are typically floored by head, locally derived clay, silt, sand and gravel. The western valleys were created during recent glacial periods through the action of water over frozen ground whilst many in the east represent subglacial drainage. During the last ice age (Devensian), ice encroached upon the Wolds from the northeast and entered the Humber gap from the east but did not cover the Wolds, hence there is no Devensian age glacial till on these hills. However, an earlier ice age left extensive spreads of till across the central and southern areas. Sections of the main scarp, notably at Saxby All Saints and between Nettleton and Walesby have been subject to landslip.
The Wolds comprise a series of low hills incised by characteristic dry open valleys.
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