Enigmatic rocks and sarsen stones of the West Sussex Coastal Plain, southern Britain

Bone, David A.

doi:10.1016/j.pgeola.2021.08.005

Cited by 3 publications

(3 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The evidence reviewed here for high RSL during MIS4–3 coincident with a calving margin for the BIIS provides the combination of conditions envisaged by Reid (1892) and Prestwich (1892) required to transport and emplace these erratics by iceberg rafting. It has been assumed that the timing of ice rafting involved was during the Anglian glaciation (MIS12) or earlier (Kidson et al, 1977; Bone, 2022) but, given the evidence reviewed here, it is likely that at least some were emplaced during MIS4–3. There must have been earlier phases with analogous transitional conditions since erratic boulders occur within the older uplifted marine sequences along the Sussex coast (Bone, 2022).…”

Section: Discussionmentioning

confidence: 93%

“…It has been assumed that the timing of ice rafting involved was during the Anglian glaciation (MIS12) or earlier (Kidson et al, 1977; Bone, 2022) but, given the evidence reviewed here, it is likely that at least some were emplaced during MIS4–3. There must have been earlier phases with analogous transitional conditions since erratic boulders occur within the older uplifted marine sequences along the Sussex coast (Bone, 2022). It should not therefore be assumed that MIS4–3 was the only potential window of emplacement (cf.…”

Section: Discussionmentioning

confidence: 93%

“…The timing of the emplacement of these erratics located from Baggy Point in North Devon to Sussex, exemplified by the 50‐tonne garnetiferous microcline gneiss Giant's Erratic at Porthleven in Cornwall (Fig. 1; Mottershead, 1977; Campbell, 1998), has remained elusive (Bates et al, 2000, 2010; Westaway et al, 2006; Bone, 2022; Briant et al, 2022). The evidence reviewed here for high RSL during MIS4–3 coincident with a calving margin for the BIIS provides the combination of conditions envisaged by Reid (1892) and Prestwich (1892) required to transport and emplace these erratics by iceberg rafting.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The timing and magnitude of the British–Irish Ice Sheet between Marine Isotope Stages 5d and 2: implications for glacio‐isostatic adjustment, high relative sea levels and ‘giant erratic’ emplacement

Scourse

2024

J Quaternary Science

View full text Add to dashboard Cite

The extent, chronology and dynamics of the pre‐Marine Isotope Stage (MIS) 2 last British–Irish Ice Sheet (BIIS) are not well known. Although the BRITICE‐CHRONO Project has detailed the maximum extent and retreat phases of the last BIIS for the period after 30 ka and into the Last Glacial Maximum (LGM), the Project identified several pre‐existing datasets and generated new data that implied glaciation pre‐dating the LGM but which post‐dated the Last Interglacial (Eemian; MIS5e); these data are reviewed here. There are no dated till units but are other indicators clearly indicative of glaciation: deep‐sea ice‐rafted detritus flux into the adjacent NE Atlantic, cosmogenic rock‐exposure age dating from glaciated surfaces in Wales and the island of Lundy (Bristol Channel), and optically stimulated luminescence (OSL) ages of proximal glacifluvial sequences on the Isle of Lewis (Outer Hebrides) and in the Cheshire Basin. Taken together these indicate BIIS inception during MIS5d, growth into MIS4 and evidence for dynamic retreat–advance phases during MIS3. OSL evidence for high relative sea level indicated by raised beaches in southern Ireland during MIS4 and 3 at a time of lowered glacio‐eustatic sea level indicates substantial glacial isostatic loading, explained by the early growth of the BIIS during the last cold stage. High relative sea level during MIS4 and 3 coincident with adjacent calving ice sheet margins provides an explanation for the rafted giant erratics found around the shores of southern Britain and Ireland.

show abstract

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

The timing and magnitude of the British–Irish Ice Sheet between Marine Isotope Stages 5d and 2: implications for glacio‐isostatic adjustment, high relative sea levels and ‘giant erratic’ emplacement

Scourse

2024

J Quaternary Science

View full text Add to dashboard Cite

show abstract

The ‘ gigantic boulders ’ of the Torino Hill (NW Italy): geohistorical significance and geoheritage value

Barale

2023

View full text Add to dashboard Cite

Large boulders, up to several metres in diameter and mainly made up of metamorphic rocks, are scattered throughout the Torino Hill in NW Italy. These boulders were originally included in Oligocene-Miocene conglomerate beds and were released by alteration of the host rock at the surface. In the past two centuries, their origin and mechanisms of emplacement in the conglomerate bodies were largely debated by both Italian and foreign geologists. Some of the boulders had been given proper names by the local people and had become the object of legends and rituals. Moreover, the boulders had in the past an economic value, being used as construction stones or exploited to produce aggregates, lime, and millstones. This, together with the progressive urbanisation of the area, caused the disappearance of many of the large boulders once present on the Torino Hill. The remaining ones are presently not valorised and almost forgotten, even though they represent an invaluable geoheritage and would deserve rediscovery and protection. Supplementary material at https://doi.org/10.6084/m9.figshare.c.6677684

show abstract

Unobvious geoheritage in sacral buildings: millstones in churches of NE Poland from a geological and geomorphological perspective

Czubla,

Brykała,

Dąbski

et al. 2024

Geogr. Pol.

View full text Add to dashboard Cite

The article highlights the importance of medieval churches with embedded millstones as geocultural objects with a great geotouristic and educational potential. In the lowland areas of Northeastern Poland, 79 millstones and their semi-finished products were inventoried. Their sizes ranged from 70 to 100 cm in diameter. The majority of them were made of erratic boulders, mainly granitoids of Fennoscandian origin. Additionally, gneisses, sandstones, pegmatites, and basaltoid were also identified. An attempt was made to determine the degree of weathering of the millstones over several hundred years of exposure to external conditions. Measurements of moisture content and salinity of the walls surrounding 10 millstones embedded in the walls of 8 churches were taken three times (in spring, summer, and winter). Lower wall moisture was observed in the vicinity of the millstones, but only in the case of three walls, the salinity of the mortar binding the bricks and stones was at a low level. A weak but statistically significant negative correlation was found between the age of the churches and the hardness of the millstones measured with a Schmidt hammer.

show abstract

Enigmatic rocks and sarsen stones of the West Sussex Coastal Plain, southern Britain

Cited by 3 publications

References 43 publications

The timing and magnitude of the British–Irish Ice Sheet between Marine Isotope Stages 5d and 2: implications for glacio‐isostatic adjustment, high relative sea levels and ‘giant erratic’ emplacement

The timing and magnitude of the British–Irish Ice Sheet between Marine Isotope Stages 5d and 2: implications for glacio‐isostatic adjustment, high relative sea levels and ‘giant erratic’ emplacement

The ‘ gigantic boulders ’ of the Torino Hill (NW Italy): geohistorical significance and geoheritage value

Unobvious geoheritage in sacral buildings: millstones in churches of NE Poland from a geological and geomorphological perspective

Contact Info

Product

Resources

About