Pleistocene ice as a factor in supposed Neogene exhumation of the southern British Isles

Cope, John C. W.; Bowen, D. Q.

doi:10.1016/j.pgeola.2014.12.006

Cited by 3 publications

(6 citation statements)

References 43 publications

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“…() also subsequently deduced ∼1500 m of Cenozoic denudation from other parts the Irish Sea region. Although Cope and Bowen () have evidently misinterpreted this example, it is nonetheless possible that they are correct regarding other localities in the North Sea basin (see below).…”

Section: Discussionmentioning

confidence: 96%

“…It is suggested (cf. Cope and Bowen, ) that in Denmark the peak loading experienced by the Chalk resulted from Pleistocene ice‐loading, not former overburden lost to denudation. Many workers have indeed proposed that the Scandinavian ice sheet attained ∼3 km maximum thickness during multiple Pleistocene glaciations (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Cope and Bowen () have recently proposed that estimates of Cenozoic denudation in and around Britain may be exaggerated because loading effects of Pleistocene ice sheets (e.g. on compaction of the Chalk) may have been misinterpreted as loading by former overburden since lost to erosion; in their view, given the different densities involved, a ∼2000‐m‐thick ice sheet would have a similar loading effect to ∼1000 m of sediment.…”

Section: Discussionmentioning

confidence: 99%

“…However, this offshore dataset was discussed in detail by Green et al (2001a) and Williams et al (2005), who showed that the estimates of denudation from sediment compaction were consistent with other techniques, including apatite fission-track analysis (AFTA); Green et al (2012) also subsequently deduced $1500 m of Cenozoic denudation from other parts the Irish Sea region. Although Cope and Bowen (2015) have evidently misinterpreted this example, it is nonetheless possible that they are correct regarding other localities in the North Sea basin (see below).…”

Section: Offshore Evidencementioning

confidence: 97%

“…The applicability of cave‐levels relates to their formation by lowering of the water table in adjacent river valleys, making them a proxy for the fluvial (and/or glacial; cf. Cope and Bowen, ) downcutting that itself can indicate uplift. Such analysis typically involves identifying the oldest speleothem deposits present, to date the phreatic‐to‐vadose transition in each cave‐level (e.g.…”

Section: Evidence For Quaternary Uplift Of Northern England; Comparismentioning

confidence: 99%

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Isostatic compensation of Quaternary vertical crustal motions: coupling between uplift of Britain and subsidence beneath the North Sea

Westaway

2016

J Quaternary Science

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New data from offshore and onshore regions confirm the view that the Quaternary uplift of Britain and subsidence beneath the North Sea are coupled, mediated by lower‐crustal flow induced by the lateral pressure gradient caused by climate‐driven surface processes. Most measured onshore uplift rates, in both upland and lowland localities, are only applicable since the Mid‐Pleistocene Revolution; beforehand, generally lower rates prevailed. Earlier (?Oligocene–Pliocene) phases of uplift and subsidence had typically even lower rates; furthermore, the western margin of the North Sea depocentre was ∼200 km farther from the modern coastline of north‐east England. In the earliest Cenozoic, complex isostatic adjustments occurred in response to the magmatism associated with the Iceland mantle plume; the contemporaneous land surface (relative to the present‐day rock column) in northern England was typically ∼1500 m OD. However, this activity died out during the Palaeogene; the main effect of these events on the modern isostatic configuration was via the emplacement of thick mafic underplating, which now constricts the mobile lower‐crustal layer, explaining the Late Cenozoic ultra‐stability of Ireland. The evidence enables interpretations of the present‐day topography of Britain as static, caused by the Iceland mantle plume, or actively developing in response to plate motions or plate boundary forces, to be excluded.

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Section: Discussionmentioning

confidence: 96%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%