OR/14/008 Introduction - Revision history

Ajhil: /* Scope of the articles */

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Scope of the articles

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	The Palaeogene Stratigraphical Framework of England is concerned mainly with the Palaeogene successions found onshore in the London Basin and in adjacent parts of East Anglia. These are mostly considered as formal groups, formations and members. This document does not describe the Palaeogene rocks of the Hampshire Basin, south-west England, Lundy, northern England, Scotland and Northern Ireland, including the ‘British Tertiary Igneous Province’, nor those found offshore in the North Sea, the English Channel, the Western Approaches, the Bristol Channel and Cardigan Bay.		The Palaeogene Stratigraphical Framework of England is concerned mainly with the Palaeogene successions found onshore in the London Basin and in adjacent parts of East Anglia. These are mostly considered as formal groups, formations and members. This document does not describe the Palaeogene rocks of the Hampshire Basin, south-west England, Lundy, northern England, Scotland and Northern Ireland, including the ‘British Tertiary Igneous Province’, nor those found offshore in the North Sea, the English Channel, the Western Approaches, the Bristol Channel and Cardigan Bay.

	Certain onshore deposits with a relatively restricted distribution resembling that of ‘superficial deposits’, but whose age pre-dates the Quaternary, have been described in the Stratigraphical Framework Report for the Great Britain Superficial Deposits Supergroup (McMillan et al., 2011<ref name="McMillan">MCMILLAN, A A, HAMBLIN, R J O, and MERRITT, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. ''British Geological Survey Research Report'', RR/10/03. </ref>). These include units of Neogene age: the Crag Group (Plio- Pleistocene) and the St Erth Formation (Pliocene), and the karstic fissure-fill sediments, of Palaeogene–Neogene and possible latest Mesozoic (Cretaceous) age, that are found on the Durham coast and in the Peak District. These deposits, together with the Castle Eden Fissure- fill Formation and the Brassington Formation, have been assigned formal status but currently remain unattached to a group. Remanié deposits originating during the Palaeogene or Neogene (including the Clay-with-flints Formation, the Lenham Formation and the Buchan Gravels Formation) are assigned to the Residual Deposits Group of the Superficial Deposits Supergroup.		Certain onshore deposits with a relatively restricted distribution resembling that of ‘superficial deposits’, but whose age pre-dates the Quaternary, have been described in the Stratigraphical Framework Report for the Great Britain Superficial Deposits Supergroup (McMillan et al., 2011<ref name="McMillan">MCMILLAN, A A, HAMBLIN, R J O, and MERRITT, J W. 2011. A lithostratigraphical framework for onshore Quaternary and Neogene (Tertiary) superficial deposits of Great Britain and the Isle of Man. ''British Geological Survey Research Report'', RR/10/03. </ref>). These include units of Neogene age: the Crag Group (Plio-Pleistocene) and the St Erth Formation (Pliocene), and the karstic fissure-fill sediments, of Palaeogene–Neogene and possible latest Mesozoic (Cretaceous) age, that are found on the Durham coast and in the Peak District. These deposits, together with the Castle Eden Fissure- fill Formation and the Brassington Formation, have been assigned formal status but currently remain unattached to a group. Remanié deposits originating during the Palaeogene or Neogene (including the Clay-with-flints Formation, the Lenham Formation and the Buchan Gravels Formation) are assigned to the Residual Deposits Group of the Superficial Deposits Supergroup.

	=Comparison with the Geological Society of London special report of the Tertiary=		=Comparison with the Geological Society of London special report of the Tertiary=

Ajhil: /* Sequence stratigraphy */

2021-11-05T10:11:05Z

Sequence stratigraphy

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	==Sequence stratigraphy==		==Sequence stratigraphy==
	Analysis of global sea-level variation and correlation of the corresponding sedimentary successions has been a very useful tool for stratigraphical analysis, and in hydrocarbons exploration. However, as Knox (1996a<ref name="Knox 1996a">KNOX, R W O. 1996a. Correlation of the early Paleogene in northwest Europe: an overview. 1–11 ''in ''Correlation of the Early Palaeogene in Northwest Europe. KNOX, R W O, CORFIELD, R M, and DUNAY, R E (editors). ''Geological Society of London Special Publication, ''No. 101. </ref>, b<ref name="Knox 1996b">KNOX, R W O. 1996b. Tectonic controls on sequence development in the Palaeocene and earliest Eocene of southeast England: implications for North Sea stratigraphy. 209–230 ''in ''Sequence Stratigraphy in British Geology. HESSELBRO, S P, and PARKINSON, D N (editors). ''Geological Society of London Special Publication, ''No. 103. </ref>) points out, the Palaeogene sequence stratigraphy of north-west Europe should not be considered without reference to the tectonic development of the region, influenced as it was by crustal rifting in the North Atlantic and crustal compression in the Alpine zone.		Analysis of global sea-level variation and correlation of the corresponding sedimentary successions has been a very useful tool for stratigraphical analysis, and in hydrocarbons exploration. However, as Knox (1996a<ref name="Knox 1996a">KNOX, R W O. 1996a. Correlation of the early Paleogene in northwest Europe: an overview. 1–11 ''in ''Correlation of the Early Palaeogene in Northwest Europe. KNOX, R W O, CORFIELD, R M, and DUNAY, R E (editors). ''Geological Society of London Special Publication, ''No. 101. </ref>, b<ref name="Knox 1996b">KNOX, R W O. 1996b. Tectonic controls on sequence development in the Palaeocene and earliest Eocene of southeast England: implications for North Sea stratigraphy. 209–230 ''in ''Sequence Stratigraphy in British Geology. HESSELBRO, S P, and PARKINSON, D N (editors). ''Geological Society of London Special Publication, ''No. 103.</ref>) points out, the Palaeogene sequence stratigraphy of north-west Europe should not be considered without reference to the tectonic development of the region, influenced as it was by crustal rifting in the North Atlantic and crustal compression in the Alpine zone.

	=The BGS Lexicon of named rock units=		=The BGS Lexicon of named rock units=

Ajhil at 08:58, 22 October 2021

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	__NOTOC__		__NOTOC__
	{{OR/14/008}}		{{OR/14/008}}
	These articles are the formal statement of the lithostratigraphy of Palaeogene deposits<ref>Currently, BGS uses the earlier spelling of ‘Palaeogene’ for the first Period of the Cenozoic Era, in contrast to Ogg et al. (2008), which uses ‘Paleogene’. Both authorities use ‘Paleocene’ for the first Epoch of the Palaeogene</ref> of the London Basin, in south-east England, as adopted by the British Geological Survey. It contains a review of the nomenclature used in BGS publications, including maps, and sets out the currently preferred scheme. This review draws heavily on the work of BGS staff, including that published outside BGS, as well as publications and some unpublished work from outside BGS.		These articles are the formal statement of the lithostratigraphy of Palaeogene deposits<ref>Currently, BGS uses the earlier spelling of ‘Palaeogene’ for the first Period of the Cenozoic Era, in contrast to Ogg et al. (2008), which uses ‘Paleogene’. Both authorities use ‘Paleocene’ for the first Epoch of the Palaeogene.</ref> of the London Basin, in south-east England, as adopted by the British Geological Survey. It contains a review of the nomenclature used in BGS publications, including maps, and sets out the currently preferred scheme. This review draws heavily on the work of BGS staff, including that published outside BGS, as well as publications and some unpublished work from outside BGS.

	The unit descriptions will also appear in the BGS Lexicon of Rock Unit Names ([http://www.bgs.ac.uk/Lexicon/home.html http://www.bgs.ac.uk/Lexicon/home.html]), although as time passes the content of the Lexicon may be revised or expanded.		The unit descriptions will also appear in the BGS Lexicon of Rock Unit Names ([http://www.bgs.ac.uk/Lexicon/home.html http://www.bgs.ac.uk/Lexicon/home.html]), although as time passes the content of the Lexicon may be revised or expanded.

Ajhil: /* Stratigraphical Framework */

2021-10-22T08:55:39Z

Stratigraphical Framework

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	=Stratigraphical Framework=		=Stratigraphical Framework=
	This report is specifically concerned with lithostratigraphy but many other aspects of the stratigraphy of the Palaeogene have been studied in considerable detail. The following notes are summarised from Knox (1996a)<ref name="Knox 1996a">KNOX, R W O. 1996a. Correlation of the early Paleogene in northwest Europe: an overview. 1–11 ''in ''Correlation of the Early Palaeogene in Northwest Europe. KNOX, R W O, CORFIELD, R M, and DUNAY, R E (editors). ''Geological Society of London Special Publication, ''No. 101. </ref> and Ogg et al. (2008)<ref name="Ogg">OGG, J G, OGG, G, and GRADSTEIN, F M. 2008. ''The concise geologic time scale''. (Cambridge: Cambridge University Press.) </ref>, and from the other cited sources. The various stratigraphies are also discussed and summarised by Daley (1999a)<ref name="Daley 1999a">DALEY, B. 1999a. Introduction to the Palaeogene. 9-22 ''in ''British Tertiary Stratigraphy. DALEY, B, and BALSON, P (editors). ''GeologicalConservation Review Series, ''No. 15.</ref> and, in more detail, by King (2006)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. ~~395–427~~ in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref> and King (in prep.)<ref name="King in prep"></ref>.		This report is specifically concerned with lithostratigraphy but many other aspects of the stratigraphy of the Palaeogene have been studied in considerable detail. The following notes are summarised from Knox (1996a)<ref name="Knox 1996a">KNOX, R W O. 1996a. Correlation of the early Paleogene in northwest Europe: an overview. 1–11 ''in ''Correlation of the Early Palaeogene in Northwest Europe. KNOX, R W O, CORFIELD, R M, and DUNAY, R E (editors). ''Geological Society of London Special Publication, ''No. 101. </ref> and Ogg et al. (2008)<ref name="Ogg">OGG, J G, OGG, G, and GRADSTEIN, F M. 2008. ''The concise geologic time scale''. (Cambridge: Cambridge University Press.) </ref>, and from the other cited sources. The various stratigraphies are also discussed and summarised by Daley (1999a)<ref name="Daley 1999a">DALEY, B. 1999a. Introduction to the Palaeogene. 9-22 ''in ''British Tertiary Stratigraphy. DALEY, B, and BALSON, P (editors). ''GeologicalConservation Review Series, ''No. 15.</ref> and, in more detail, by King (2006)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395-427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.),</ref> and King (in prep.)<ref name="King in prep"></ref>.

	==Chronostratigraphy==		==Chronostratigraphy==

Ajhil: /* Palaeogeography and depositional basins */

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Palaeogeography and depositional basins

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	=Palaeogeography and depositional basins =		=Palaeogeography and depositional basins =
	An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395-427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.)</ref>, pp.395–396 and 400–440).		An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395-427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.),</ref> pp.395–396 and 400–440).

	The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.		The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.

Ajhil: /* Palaeogeography and depositional basins */

2021-10-22T08:54:39Z

Palaeogeography and depositional basins

← Older revision		Revision as of 09:54, 22 October 2021
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	=Palaeogeography and depositional basins =		=Palaeogeography and depositional basins =
	An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. ~~395–427~~ in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.), pp.395–396 and 400–440)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref>.		An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395-427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.)</ref>, pp.395–396 and 400–440).

	The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.		The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.

Ajhil: /* Palaeogeography and depositional basins */

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Palaeogeography and depositional basins

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	=Palaeogeography and depositional basins =		=Palaeogeography and depositional basins =
	An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.)~~</ref><ref name="Gregory 1929"></ref>~~, pp.395–396 and 400–440)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref>.		An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.), pp.395–396 and 400–440)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref>.

	The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.		The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.

Ajhil: /* Palaeogeography and depositional basins */

2021-10-22T08:51:56Z

Palaeogeography and depositional basins

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	=Palaeogeography and depositional basins =		=Palaeogeography and depositional basins =
	An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006, pp.395–396 and 400–440)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref>.		An overview of the Palaeogene depositional basins in the United Kingdom and adjacent offshore areas is given by King (2006<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.)</ref><ref name="Gregory 1929"></ref>, pp.395–396 and 400–440)<ref name="King 2006">KING, C. 2006. Paleogene and Neogene: uplift and a cooling climate. 395–427 in ''The geology of England and Wales''. BRENCHLEY, P J, and RAWSON, P F (editors). (The Geological Society, London.) </ref>.

	The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.		The London Basin forms the middle and lower parts of the Thames Valley and also underlies Essex and coastal areas of North Kent<ref>This report refers to the areas of the traditional English counties, prior to the formation of the modern Boroughs, Districts and Unitary Authorities</ref>, extending eastwards offshore into the southern North Sea Basin. The Late Paleocene to mid-Eocene successions that occur in these onshore areas were deposited mainly in near-shore marine to coastal plain environments, although a relatively deep-water marine unit (the London Clay Formation) was laid down during times of high sea level in the Ypresian.

Dbk: /* Tephrostratigraphy */

2019-11-28T08:46:54Z

Tephrostratigraphy

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	==Tephrostratigraphy==		==Tephrostratigraphy==
	As more ash layers have been found, especially in offshore successions, so their value as a long-distance correlation tool has been recognised and developed. Several phases of ash deposition have been recognised, with compositional changes that can be related to the development of crustal rifting in the north-east Atlantic (Knox, 1984<ref name="Knox 1984">KING, C. 1984. The stratigraphy of the London Clay Formation and Virginia Water Formation in the coastal sections of the Isle of Sheppey (Kent, England). ''Tertiary Research'', Vol. 5, 121–160. </ref>, 1985<ref name="Knox 1985">KNOX, R W O. 1985. Stratigraphic significance of volcanic ash in Paleocene and Eocene sediments at Site 549 and Site 550.''Initial Reports of the Deep Sea Drilling Project'', Vol. 80, 845–850. </ref>, 1996a<ref name="Knox 1996a">KNOX, R W O. 1996a. Correlation of the early Paleogene in northwest Europe: an overview. 1–11 ''in ''Correlation of the Early Palaeogene in Northwest Europe. KNOX, R W O, CORFIELD, R M, and DUNAY, R E (editors). ''Geological Society of London Special Publication, ''No. 101.</ref>; Knox and Ellison, 1979<ref name="Knox and Ellison 1979">KNOX, R W O, and ELLISON, R A. 1979. A Lower Eocene ash sequence in SE England. Journal of the Geological Society, Vol. 136, 251–253. </ref>; Knox and Morton, 1988<ref name="Knox and Morton 1988">KNOX, R W O, and MORTON, A C. 1988. The record of early Tertiary N. Atlantic volcanism in sediments of the North Sea Basin. 407–419 ''in ''Early Tertiary volcanism and the opening of the NE Atlantic. MORTON, A C, and PARSON, L W (editors). ''Geological Society of London Special Publication, ''No. 39. </ref>; Morton and Knox, 1990<ref name="Morton 1990">MORTON, A C, and KNOX, R W O. 1990. Geochemistry of Late Paleocene and Early Eocene tephras from the North Sea basin. ''Journal of the Geological Society, London'', Vol. 147, 425–437. </ref>).		As more ash layers have been found, especially in offshore successions, so their value as a long-distance correlation tool has been recognised and developed. Several phases of ash deposition have been recognised, with compositional changes that can be related to the development of crustal rifting in the north-east Atlantic (Knox, 1984<ref name="Knox 1984">KING, C. 1984. The stratigraphy of the London Clay Formation and Virginia Water Formation in the coastal sections of the Isle of Sheppey (Kent, England). ''Tertiary Research'', Vol. 5, 121–160. </ref>, 1985<ref name="Knox 1985">KNOX, R W O. 1985. Stratigraphic significance of volcanic ash in Paleocene and Eocene sediments at Site 549 and Site 550.''Initial Reports of the Deep Sea Drilling Project'', Vol. 80, 845–850. </ref>, 1996a<ref name="Knox 1996a"></ref>; Knox and Ellison, 1979<ref name="Knox and Ellison 1979">KNOX, R W O, and ELLISON, R A. 1979. A Lower Eocene ash sequence in SE England. Journal of the Geological Society, Vol. 136, 251–253. </ref>; Knox and Morton, 1988<ref name="Knox and Morton 1988">KNOX, R W O, and MORTON, A C. 1988. The record of early Tertiary N. Atlantic volcanism in sediments of the North Sea Basin. 407–419 ''in ''Early Tertiary volcanism and the opening of the NE Atlantic. MORTON, A C, and PARSON, L W (editors). ''Geological Society of London Special Publication, ''No. 39. </ref>; Morton and Knox, 1990<ref name="Morton 1990">MORTON, A C, and KNOX, R W O. 1990. Geochemistry of Late Paleocene and Early Eocene tephras from the North Sea basin. ''Journal of the Geological Society, London'', Vol. 147, 425–437. </ref>).

	==Cyclic stratigraphy==		==Cyclic stratigraphy==

Dbk at 09:42, 10 August 2015

2015-08-10T09:42:10Z

← Older revision		Revision as of 10:42, 10 August 2015
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	__NOTOC__		__NOTOC__
	{{OR/14/008}}		{{OR/14/008}}
	~~This document is~~ the formal statement of the lithostratigraphy of Palaeogene deposits<ref>Currently, BGS uses the earlier spelling of ‘Palaeogene’ for the first Period of the Cenozoic Era, in contrast to Ogg et al. (2008), which uses ‘Paleogene’. Both authorities use ‘Paleocene’ for the first Epoch of the Palaeogene</ref> of the London Basin, in south-east England, as adopted by the British Geological Survey. It contains a review of the nomenclature used in BGS publications, including maps, and sets out the currently preferred scheme. This review draws heavily on the work of BGS staff, including that published outside BGS, as well as publications and some unpublished work from outside BGS.		These articles are the formal statement of the lithostratigraphy of Palaeogene deposits<ref>Currently, BGS uses the earlier spelling of ‘Palaeogene’ for the first Period of the Cenozoic Era, in contrast to Ogg et al. (2008), which uses ‘Paleogene’. Both authorities use ‘Paleocene’ for the first Epoch of the Palaeogene</ref> of the London Basin, in south-east England, as adopted by the British Geological Survey. It contains a review of the nomenclature used in BGS publications, including maps, and sets out the currently preferred scheme. This review draws heavily on the work of BGS staff, including that published outside BGS, as well as publications and some unpublished work from outside BGS.

	The unit descriptions will also appear in the BGS Lexicon of Rock Unit Names ([http://www.bgs.ac.uk/Lexicon/home.html http://www.bgs.ac.uk/Lexicon/home.html]~~) (Section 1.5~~), although as time passes the content of the Lexicon may be revised or expanded.		The unit descriptions will also appear in the BGS Lexicon of Rock Unit Names ([http://www.bgs.ac.uk/Lexicon/home.html http://www.bgs.ac.uk/Lexicon/home.html]), although as time passes the content of the Lexicon may be revised or expanded.

	=Scope of the ~~report~~=		=Scope of the articles=
	The Palaeogene Stratigraphical Framework of England is concerned mainly with the Palaeogene successions found onshore in the London Basin and in adjacent parts of East Anglia. These are mostly considered as formal groups, formations and members. This document does not describe the Palaeogene rocks of the Hampshire Basin, south-west England, Lundy, northern England, Scotland and Northern Ireland, including the ‘British Tertiary Igneous Province’, nor those found offshore in the North Sea, the English Channel, the Western Approaches, the Bristol Channel and Cardigan Bay.		The Palaeogene Stratigraphical Framework of England is concerned mainly with the Palaeogene successions found onshore in the London Basin and in adjacent parts of East Anglia. These are mostly considered as formal groups, formations and members. This document does not describe the Palaeogene rocks of the Hampshire Basin, south-west England, Lundy, northern England, Scotland and Northern Ireland, including the ‘British Tertiary Igneous Province’, nor those found offshore in the North Sea, the English Channel, the Western Approaches, the Bristol Channel and Cardigan Bay.