Fuller's earth (bentonite) in the Lower Cretaceous (Upper Aptian) ofShanklin (Isle of Wight, southern England)

Ruffell, A. H; Hesselbo, SP; Wach, Grant D.; Simpson, M.A.; Wray, David S.

doi:10.1016/s0016-7878(02)80034-7

Cited by 11 publications

(8 citation statements)

References 27 publications

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“…For these reasons, certain metals are often found in smectites. Common trace elements enriched to ppm levels in montmorillonite and bentonite analyses are cations such as B, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, Ba, REE (rare earth elements) and Pb [e.g., Jenkyns , 1986; Ruffell et al , 2002; Taylor and McLennan , 1985]. Trace element abundances in phyllosilicates are a combination of the above physicochemical affinities, as well as their available concentrations and susceptibilities to mobilization, especially by aqueous leaching.…”

Section: Discussionmentioning

confidence: 99%

“…Y is significantly mobilized, especially relative to Ti and Nb, in the early stages of weathering during the growth of clay minerals [ Hill et al , 2000]. Yttrium and the rare earths are enriched in many smectites, including the Shanklin bentonite [ Ruffell et al , 2002]. Montmorillonite can have selectivity for adsorption of trivalent yttrium, compared to a univalent ion, at moderate to low temperatures and across a wide range of pH [ Frysinger and Thomas , 1960].…”

Section: Discussionmentioning

confidence: 99%

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Evidence for montmorillonite or its compositional equivalent in Columbia Hills, Mars

Clark

Arvidson²,

Gellert

et al. 2007

J. Geophys. Res.

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[1] During its exploration of the Columbia Hills, the Mars Exploration Rover ''Spirit'' encountered several similar samples that are distinctly different from Martian meteorites and known Gusev crater soils, rocks, and sediments. Occurring in a variety of contexts and locations, these ''Independence class'' samples are rough-textured, iron-poor (equivalent FeO $ 4 wt%), have high Al/Si ratios, and often contain unexpectedly high concentrations of one or more minor or trace elements (including Cr, Ni, Cu, Sr, and Y). Apart from accessory minerals, the major component common to these samples has a compositional profile of major and minor elements which is similar to the smectite montmorillonite, implicating this mineral, or its compositional equivalent. Infrared thermal emission spectra do not indicate the presence of crystalline smectite. One of these samples was found spatially associated with a ferric sulfate-enriched soil horizon, possibly indicating a genetic relationship between these disparate types of materials. Compared to the nearby Wishstone and Watchtower class rocks, major aqueous alteration involving mineral dissolution and mobilization with consequent depletions of certain elements is implied for this setting and may be undetectable by remote sensing from orbit because of the small scale of the occurrences and obscuration by mantling with soil and dust.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Evidence for montmorillonite or its compositional equivalent in Columbia Hills, Mars

Clark

Arvidson²,

Gellert

et al. 2007

J. Geophys. Res.

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“…The succession at Knock Cliff is formed of the three strata of the Lower Greensand Group: the uppermost members of the Ferruginous Sands Formation (late Aptian in age; Ruffell et al . 2002), the Sandrock Formation (age undetermined), and the Monk's Bay Sandstone Formation (Albian in age; Ruffell et al . 2002; Gale 2019).…”

Section: Geological Settingmentioning

confidence: 99%

“…2002), the Sandrock Formation (age undetermined), and the Monk's Bay Sandstone Formation (Albian in age; Ruffell et al . 2002; Gale 2019). The last of these can be discounted as a source for the fossils because sediment from this formation is gritty and dark brown; furthermore, vertebrate fossils remain unreported (Young et al .…”

Section: Geological Settingmentioning

confidence: 99%

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A highly pneumatic middle Cretaceous theropod from the British Lower Greensand

Barker

Naish

Clarkin

et al. 2020

Papers in Palaeontology

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A series of axial elements from the Aptian Ferruginous Sands Formation of the Lower Greensand Group, discovered on the foreshore near Knock Cliff on the Isle of Wight, UK are (bar some isolated teeth and fragmentary postcranial material from the Cenomanian Cambridge Greensand) the youngest non-avian theropod remains reported from the British Mesozoic. These specimens have the potential to shed light on a poorly known section of the European dinosaur record. Consistency in size, appearance and adhering matrix indicates that the vertebrae belong to the same individual. This was a mid-sized tetanuran, the presence of several diagnostic characters indicating that it should be recognized as a new taxon, herein named Vectaerovenator inopinatus. The cervical and dorsal vertebrae are camerate and highly pneumatic. Tetanuran features include opisthocoelous cervicals and pneumatic foramina located within fossae; however, assigning this specimen to a specific clade is problematic. Within Tetanurae, Vectaerovenator possesses axial structures and homoplastic features seen in megalosauroids, carcharodontosaurians and certain coelurosaurs. Not only is Vectaerovenator one of the UK's youngest non-bird dinosaurs, and one of few valid British Greensand taxa, it is also the first diagnosable theropod taxon to be named from Aptian deposits of Europe.

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References

2023

Inorganic Geochemistry of Coal

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Fuller's earth (bentonite) in the Lower Cretaceous (Upper Aptian) ofShanklin (Isle of Wight, southern England)

Cited by 11 publications

References 27 publications

Evidence for montmorillonite or its compositional equivalent in Columbia Hills, Mars

Evidence for montmorillonite or its compositional equivalent in Columbia Hills, Mars

A highly pneumatic middle Cretaceous theropod from the British Lower Greensand

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