The Wealden Group, occasionally also referred to as the Wealden Supergroup, is a group (a sequence of rock strata) in the lithostratigraphy of southern England. The Wealden group consists of paralic to continental (freshwater) facies sedimentary rocks of Berriasian to Aptian age and thus forms part of the English Lower Cretaceous. It is composed of alternating sands and clays. The sandy units were deposited in a flood plain of braided rivers, the clays mostly in a lagoonal coastal plain.[1]

The Wealden Group can be found in almost all Early Cretaceous basins of England: its outcrops curve from the Wessex Basin in the south to the Cleveland Basin in the northeast. It is not found in northwest England and Wales, areas which were at the time tectonic highs where no deposition took place. The same is true for the London Platform around London and Essex. Offshore, the Wealden Group can reach a thickness of 700 metres.[1] The terms Wealden and Wealden facies are also used as generic terms referring to Early Cretaceous non-marine sequences elsewhere in Europe.

Stratigraphy

The Wealden Group lies stratigraphically on top of the Purbeck Group, which spans the Jurassic-Cretaceous boundary. Within the Wessex Basin, the Wealden Group consists of two formations: the Wessex Formation and overlying Vectis Formation. In the Weald Basin, the Wealden Group consists of four formations: the Ashdown Formation, the Wadhurst Clay Formation, the Tunbridge Wells Sand Formation and the Weald Clay Formation.[2] The lower three formations are sometimes collectively referred to as the Hastings Beds. In Oxfordshire, Buckinghamshire and Wiltshire, the Wealden Group is only found as an outlier on top of hills and only consists of a single formation, the Whitchurch Sand Formation. In Yorkshire, the equivalently aged Speeton Clay Formation, a marine unit, is present.

On top of the Wealden Group is the Lower Greensand Group. The difference between these two groups has been formed by a major eustatic (global) transgression of the sea. The Greensand (Aptian/Albian in age) consists of marine deposits.

The sequence in the Weald Basin has also been described as a supergroup, containing the Weald Clay Group and Hastings Group.[3]

Palaeontology

The Wealden Group forms outcrops covering a large part of south and south-eastern England including the Isle of Wight. It takes its name from the Weald region of Kent, Sussex, Surrey and Hampshire. It has yielded many fossils, including dinosaurs like Iguanodon and Hypsilophodon.[4] Apart from fossils, it shows many other signs of being deposited in a continental environment, such as mudcracks and -in some rare cases- dinosaur footprints. Taxa included in the table below have an uncertain provenance and cannot be placed into one of the constituent formations, thus they are placed here.

Pterosaurs

Pterosaurs reported from the Wealden Group
Genus Species Location Stratigraphic position Material Notes Images
Coloborhynchus C. clavirostris[5]
  • St.-Leonards-on-Sea[5]
Hastings Beds "Anterior portion of rostrum"[5] An ornithocheirid pterosaur.
Coloborhynchus

Dinosaurs

Dinosaurs reported from the Wealden Group
Genus Species Location Stratigraphic position Material Notes Images
Thecospondylus[6] T. horneri[6] Hastings Beds "Internal mold of sacrum."[7] Dubious genus that has been variously classified as either a saurischian or ornithischian.[8] It is currently only tentatively regarded as dinosaurian.[6]
Therosaurus[9] T. anglicus[9]
Altispinax[10] A. dunkeri[10] Hastings Beds "Dorsal vertebrae."[11]
Haestasaurus[12] H. becklesii[10] Hastings Beds Forelimb A ?basal macronarian

Pleurocoelus[13] P. valdensis[13] A dubious basal titanosauriform[13]
Turiasauria Indeterminate Hasting beds?[14] Vertebra[14]
Theropoda Indeterminate
  • West Sussex, East Sussex, Kent[15]

Wealden elsewhere in Europe

The term "Wealden" and "Wealden facies" has been applied to other Lower Cretaceous sequences in Europe, including the "German Wealden", comprising the Berriasian aged Bückeberg Formation of the Lower Saxony Basin[16] and in Belgium, where "Wealden facies" has been used as a term to refer to the Barremian-Aptian aged sequences of the Mons Basin, including the Sainte-Barbe Clays Formation where large numbers of Iguanodon were found in the 19th century.[17]

References

  1. ^ a b Jackson (2008)
  2. ^ Hopson PM, Wilkinson IP, Woods MA (2008). "A stratigraphical framework for the Lower Cretaceous of England" (PDF). British Geological Survey Research Report , RR/08/03. British Geological Survey.
  3. ^ Benson RB, Brusatte SL, Hutt S, Naish D (2009). "A new large basal tetanuran (Dinosauria: Theropoda) from the Wessex Formation (Barremian) of the Isle Of Wight, England". Journal of Vertebrate Paleontology. 29 (2): 612–615. Bibcode:2009JVPal..29..612B. doi:10.1671/039.029.0202. S2CID 83869634.
  4. ^ Weishampel et al. (2004)
  5. ^ a b c Rodrigues T, Kellner AW (2013). "Taxonomic review of the Ornithocheirus complex (Pterosauria) from the Cretaceous of England". ZooKeys (308): 1–112. Bibcode:2013ZooK..308....1R. doi:10.3897/zookeys.308.5559. PMC 3689139. PMID 23794925.
  6. ^ a b c d "10.21 Kent, England; 1. Hastings Beds"in Weishampel, et al. (2004). Page 559.
  7. ^ "Table 2.1," in Weishampel, et al. (2004). Page 26.
  8. ^ Huene, 1909. Skizze zu einer Systematik und Stammesgeschichte der Dinosaurier [Sketch of the systematics and origins of the dinosaurs]. Centralblatt für Mineralogie, Geologie und Paläontologie. 1909, 12-22.
  9. ^ a b c d "10.18 West Sussex, England; 1. Hastings Beds" in Weishampel, et al. (2004). Page 559.
  10. ^ a b c d e f "10.19 East Sussex, England; 1. Hastings Beds" in Weishampel, et al. (2004). Page 559.
  11. ^ "Table 4.1," in Weishampel, et al. (2004). Page 73.
  12. ^ Paul Upchurch, Philip D. Mannion & Michael P. Taylor (2015) The Anatomy and Phylogenetic Relationships of “Pelorosaurus“ becklesii (Neosauropoda, Macronaria) from the Early Cretaceous of England. PLoS ONE 10(6): e0125819. doi:10.1371/journal.pone.0125819 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0125819
  13. ^ a b c "10.19 East Sussex, England; 1. Hastings Beds" and "10.18 West Sussex, England; 1. Hastings Beds" in Weishampel, et al. (2004). Page 559.
  14. ^ a b Mannion PD (24 January 2019). "A turiasaurian sauropod dinosaur from the Early Cretaceous Wealden Supergroup of the United Kingdom". PeerJ. 7: e6348. doi:10.7717/peerj.6348. PMC 6348093. PMID 30697494.
  15. ^ "10.19 East Sussex, England; 1. Hastings Beds" and "10.18 West Sussex, England; 1. Hastings Beds" and "10.21 Kent, England; 1. Hastings Beds"in Weishampel, et al. (2004). Page 559.
  16. ^ Richter, Annette (2012). "The 'German Wealden' and the Obernkirchen Sandstone – an Introduction". Dinosaur Tracks 2011: an international symposium, Obernkirchen, April 14-17, 2011 : abstract volume and field guide to excursions. Göttingen: Universitätsverlag Göttingen. ISBN 978-3-86395-105-4. OCLC 852208407.
  17. ^ Dejax, J.; Pons, D.; Yans, J. (1 April 2007). "Palynology of the dinosaur-bearing Wealden facies in the natural pit of Bernissart (Belgium)" (PDF). Review of Palaeobotany and Palynology. Aspects of the Jurassic and Cretaceous palynology. 144 (1): 25–38. Bibcode:2007RPaPa.144...25D. doi:10.1016/j.revpalbo.2005.10.004. ISSN 0034-6667.

Further reading

  • Jackson AA (2008). Bedrock geology UK south. An explanation of the bedrock geology map of England and Wales - 1:625,000 edition. Keyworth, Nottingham: British Geological Survey. ISBN 978-0-85272-586-3.
  • Weishampel DB, Barrett PM, Coria RA, Le Loeuff J, Xu X, Zhao X, Sahni A, Gomani EM, Noto CR (2004). "Dinosaur distribution". In Weishampel DB, Dodson P, Osmólska H (eds.). The Dinosauria. University of California Press, Berkeley. pp. 517–606.

See also

  1. Live @ Isle Of Wight Festival, UK 15 06 2019 - Fatboy Slim 01:12:50
  2. Live @ S2O Festival, Bangkok, Thailand 13 04 2019 - Fatboy Slim 01:08:38
  3. UK TOUR 2019 - Birmingham, UK [EXTRACTS] 22 02 2019 - Fatboy Slim 42:48
  4. Brighton Rooftop B2B Set 30 11 2018 - Fatboy Eats 01:40:26
  5. Live @ Creamfields 2018, UK 26 08 2018 - Fatboy Slim 31:37
  6. Live @ Tomorrowland, Freedom Stage (Week End 2) , Belgium 28 07 2018 - Fatboy Slim 01:27:45
  7. Live @ British Airways i360, Brighton, UK 30 07 2018 - Fatboy Slim 01:29:55
  8. Live @ Tomorrowland, Belgium 21 07 2018 - Fatboy Slim 01:26:30
  9. Live @ Tuesdays On Mars, Pacha Ibiza, Spain 03 07 2018 - Fatboy Slim 03:04:03
  10. All Night Long - Pacha Ibiza 19 05 2018 - Fatboy Slim 05:16:00
  11. Record Store Day Desert Island Disco Mix, BBC 6 Music, UK 15 04 2016 - Fatboy Slim 28:31
  12. Beat Up The NME 60 Knockout Minutes (1997) Fatboy Slim 01:00:47
  13. Live @ Electric Gardens, Serafino Winery, Adelaide, Australia [EXTRACTS] 26 01 2018 - Fatboy Slim 01:04:05
  14. Live @ Hultsfred, Sweden 14 06 1997 - Fatboy Slim 01:03:14
  15. Live @ Personal Fest '17, Buenos Aires, Argentina 12 11 2017 - Fatboy Slim 01:34:54
  16. Live @ Beats for Love 2017 Festival in Ostrava, Czech Republic 05 07 2017 - Fatboy Slim 01:14:04
  17. Live @ Ultra Music Festival 2012, Miami, USA 24 03 2012 - Fatboy Slim 58:51
  18. Live @ Float Your Boat, Ibiza, Spain 21 09 2017 - Fatboy Slim 01:30:48
  19. Live @ Brixton Academy, London, UK [EXTRACTS] 20 12 2014 - Fatboy Slim 01:00:00
  20. Live @ Creamfields 2017, Liverpool, UK 27 08 2017 - Fatboy Slim 01:31:43
  21. Live @ Café Mambo, Ibiza, Spain 05 08 2017 - Fatboy Slim 38:21
  22. Live @ Tomorrowland Festival 2017,Lost Frequencies & Friends Stage,Belgium 29 07 2017 - Fatboy Slim 01:25:04
  23. Live At National Cardiff 01 01 2000 - Fatboy Slim 01:13:23
  24. Live @ Super Bock Super Rock Festival, Lisbon, Portugal 15 07 2017 - Fatboy Slim 01:30:31
  25. Live @ Kappa Futur Festival, Torino, Italy 08 07 2017 - Fatboy Slim 01:29:26
  26. Live @ Electric Daisy Carnival, Tokyo, Japan 29 04 2017 - Fatboy Slim 30:25
  27. EDC Japan 2017 Mix Fatboy Slim 01:00:00
  28. Live @ Santa Cruz Boat Party, Ibiza, Spain 15 09 2016 - Fatboy Slim 01:40:46
  29. Live @ The O² Arena, London, UK 17 12 2016 - Fatboy Slim 01:28:37
  30. Beats 1 Radio Show #8 16 12 2016 - Fatboy Slim 01:58:20
  31. Beats 1 Radio Show #7 02 12 2016 - Fatboy Slim 01:58:56
  32. Beats 1 Radio Show #6 18 11 2016 - Fatboy Slim 01:58:33
  33. Beats 1 Radio Show #5 04 11 2016 - Fatboy Slim 01:58:25
  34. Beats 1 Radio Show #4 21 10 2016 - Fatboy Slim 01:58:43
  35. Beats 1 Radio Show #3 07 10 2016 - Fatboy Slim 01:51:05
  36. Beats 1 Radio Show #2 23 09 2016 - Fatboy Slim 01:58:05
  37. Beats 1 Radio Show #1 09 09 2016 - Fatboy Slim 01:49:55
  38. DJ SET WMF, Berlin, Germany 29 09 2000 - Fatboy Slim 01:49:50
  39. BACK TO THE ODD SCHOOL feat. FATBOY SLIM's Desert Eagle Disc top ten 27 11 2016 03:00:42
  40. Essential Millennium 1999 (Disc 2) Fatboy Slim 01:16:05
  41. Live @ Boiler Room, Brighton, UK 11 10 2016 - Fatboy Slim 02:55:40
  42. One Mix: Fatboy Slim - Ep27 20 01 2016 - Beats 1 59:55
  43. Live @ Bestival 2016, Essential Mix, BBC Radio 1, UK 17 09 2016 - Fatboy Slim 01:59:48
  44. Celebrating 20 years of Better Living @ The Social, London, UK 13 09 2016 - Fatboy Slim 29:09
  45. Live At Carl Cox: Music Is Revolution, Space, Ibiza, Spain 10 08 2016 - Fatboy Slim 01:57:43
  46. Live On A Night with Annie Nightingale, Maida Vale Studio, BBC Radio 1,UK 09 09 2010 - Fatboy Slim 21:29
  47. Live @ The House Of Blues, New Orleans, USA 25 03 2000 - Fatboy Slim 02:00:03
  48. Live @ Glastonbury 2016, UK 25 06 2016 - Fatboy Slim 01:25:32
  49. From Punk Get Funk, BBC Radio 2, UK 06 06 2016 - Norman Cook 56:20
  50. Live @ The Metro, Chicago, USA 03 03 1998 – Fatboy Slim 02:03:33
  51. Live @ Club Cream 10th Birthday Special, Liverpool, UK 12 10 2002 - Fatboy Slim 41:51
  52. Live @ The Ultimate FSTVL House Party, Brighton, UK 21 04 2016 - Fatboy Slim 01:30:20
  53. Live @ HARD Haunted Mansion, Shrine Expo Hall, Los Angeles, USA 28 10 2011 - Fatboy Slim 01:11:55
  54. We Are 30 Mixed By Fatboy Slim (2013) Mixmag 01:05:29
  55. Fatboy Slim - The Legend Returns (2010) Mixmag 50:59
  56. Live At Newquay Beach, Essential Selection, BBC Radio 1, UK 21 06 2002 - Fatboy Slim & Eric Morillo 01:29:08