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  2. Oxford Clay - Wikipedia

    en.wikipedia.org/wiki/Oxford_Clay

    The Oxford Clay (or Oxford Clay Formation) is a Jurassic marine sedimentary rock formation underlying much of southeast England, from as far west as Dorset and as far north as Yorkshire. The Oxford Clay Formation dates to the Jurassic, specifically, the Callovian and Oxfordian ages, [ 1 ] and comprises two main facies .

  3. Clay mineral - Wikipedia

    en.wikipedia.org/wiki/Clay_mineral

    Oxford Clay exposed near Weymouth, EnglandClay minerals are hydrous aluminium phyllosilicates (e.g. kaolin, Al 2 Si 2 O 5 4), sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces.

  4. "Pliosaurus" andrewsi - Wikipedia

    en.wikipedia.org/wiki/"Pliosaurus"_andrewsi

    It overlays the Kellaways Formation [23] and is overlain by the Stewartby Member of the Oxford Clay Formation. [24] The Peterborough Member is primarily composed of grey bituminous (asphalt-containing) [23] shale and clay rich in organic matter. [25] [26] These rocks are sometimes fissile (splittable into thin, flat slabs). [24]

  5. Category:Oxford Clay - Wikipedia

    en.wikipedia.org/wiki/Category:Oxford_Clay

    Pages in category "Oxford Clay" The following 21 pages are in this category, out of 21 total. This list may not reflect recent changes. ...

  6. Clay mineral X-ray diffraction - Wikipedia

    en.wikipedia.org/wiki/Clay_Mineral_X-Ray_Diffraction

    Clay minerals are almost always mixed with very small amounts of nonclay minerals which can produce intense peaks, even when there is very little of the sample is not a clay. If additional minerals are known to be presents, attempts should be made to separate clays from nonclays otherwise additional peaks should be expected.

  7. Kellaways Formation - Wikipedia

    en.wikipedia.org/wiki/Kellaways_Formation

    It is found in the British Isles, immediately above the Great Oolite Series: below the Oxford Clay Formation and above the Cornbrash. It consists of two layers, the Kellaways Sand, a light green-grey clayish silt and sand with layers of sand concretions, overlying the Kellaways Clay, a dark grey plastic fissile clay. [1]

  8. Siliciclastic - Wikipedia

    en.wikipedia.org/wiki/Siliciclastic

    Siliciclastic (or siliclastic [1]) rocks are clastic noncarbonate sedimentary rocks that are composed primarily of silicate minerals, such as quartz or clay minerals. Siliciclastic rock types include mudrock, sandstone, and conglomerate. [1] [2]

  9. Soil matrix - Wikipedia

    en.wikipedia.org/wiki/Soil_matrix

    In soils, clay is a soil textural class and is defined in a physical sense as any mineral particle less than 2 μm (8 × 10 −5 in) in effective diameter. Many soil minerals, such as gypsum , carbonates, or quartz, are small enough to be classified as clay based on their physical size, but chemically they do not afford the same utility as do ...