Search results

| Upnor Formation ...

...t, these two formations are not divisible in the field as only a very thin Upnor Formation is present. They are shown together as an undifferentiated Lambeth Group. The basement bed of the Lambeth Group (equivalent to the Upnor Formation) comprises reddish brown sand or interbedded sand and clay with abundant ro ...

| Upnor Formation | Orwell Member (Harwich Formation) and Upnor Formation ...

...on some geological maps of the Hampshire Basin are here interpreted as the Upnor Formation. Note: ‘Woolwich and Reading Beds’ in the western Hampshire Basin are thoug | Upnor Formation ...

...ee subdivisions within the Lambeth Group are recognised in the literature (Upnor Formation, Woolwich Formation and Reading Formation), but are not separated out in th ...

The pebbles are most abundant in some ‘pebble beds’ in the Upnor Formation and Harwich Formation but gravelly layers, or in some cases pebble strings ...

...mb|left|200px|Pebble beds interfingering with mustard-coloured sand in the Upnor Formation, Lambeth Group, Essex. [https://geoscenic.bgs.ac.uk/asset-bank/action/viewAs ...s. The Lambeth Group (G2) is up to 20m thick and has three formations. The Upnor Formation contains an abundance of well-rounded flint pebbles, shoreface deposits, an ...

...o 1.5 m. These are filled with glauconitic sand derived from the overlying Upnor Formation. ...et al., 1924). Locally, for example at Plumstead Common [45 78], only the Upnor Formation is preserved, and in some of the Palaeogene outliers, for example at Keving ...

...e extensive distribution than the Thanet Sand Formation. At the base, the Upnor Formation is typically composed of fine‐ to medium‐grained sands with varying proport ...

...cteristic of some of the Reading Formation clays and the upper part of the Upnor Formation beneath thin Lower Mottled Clay, and may lead to localised changes in clay Deoxygenation of the Upnor Formation, which has caused deaths during tunnelling and deep shaft excavation operat ...

...oolwich Formation. However, the reasons for this may be different. For the Upnor Formation, the lower water contents probably reflect the greater proportion of coarse ...le in sand samples of all the formations and in the gravel deposits of the Upnor Formation; ...

...UK.</ref>) show that the higher values are found in Lower Shelly Clay and Upnor Formation, whilst the intervening Lower Mottled Clay has a generally low gamma count. ...one; sand-filled channels generally; and the gravel beds at the top of the Upnor Formation, would all be expected to have relatively high resistivity. In contrast, in ...

...nd the lowest part of the Lambeth Group comprising the sandy facies of the Upnor Formation. ...tics and boundary of the Thanet Formation with the overlying Lambeth Group Upnor Formation is described in more detail below. ...

...Group units deposited below the mid- Lambeth Group Hiatus and includes the Upnor Formation and Lower Mottled Clay. ...ak in deposition during the Lambeth Group between the lower Lambeth Group (Upnor Formation and Lower Mottled Clay) and upper Lambeth Group (Woolwich Formation and Upp ...

.... Cable percussion boreholes can also recover more accurate thicknesses of Upnor Formation gravel beds, which are rarely 100% recovered in rotary-cored boreholes. For ''Thanet Formation and Upnor Formation Boundary''<br> ...

...M, and JOLLEY, D W. 1996. Recognition of Chron C25n in the upper Paleocene Upnor Formation of the London Basin, UK. ''Geological Society special publication.'', Vol. ...M, and JOLLEY, D W. 1996. Recognition of Chron C25n in the upper Paleocene Upnor Formation of the London Basin, UK. ''Geological Society special publication.'', Vol. ...

...Group that can cause problems in excavation are flint pebble beds (in the Upnor Formation), calcareous nodules (Reading Formation) and other locally cemented beds (W ...

...sands suggests a Scottish provenance, in contrast to that of the overlying Upnor Formation, but similar to that of most of the younger Palaeogene formations (Morton, ...c medium- to coarse-grained, locally gravelly, variably clayey sand of the Upnor Formation. In the type section and in some other places, the grain- size contrast is ...

...M, and Jolley, D W. 1996. Recognition of Chron 25N in the upper Palaeocene Upnor Formation of the London Basin, UK. 185–193 in Correlation of the early Palaeogene in ...