999 resultados para Rotation structures


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Coarse grained sample with clasts that range from small to large in size. The clast shape ranges from angular to rounded, and many grains are fractured. Grain crushing is present in large amounts. This includes edge-to-edge crushing as well as grains that are crushed into one another. Rotation structures are also common among the clasts that are sub-rounded to rounded. Areas of finer sediment can also be seen.

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This is a coarse grained sample with some very fine grained domains throughout the sample. The clast shape and size range from small to large, as well as angular to sub-rounded. Grain crushing is the most prevalent in this sample. It also contains some rotation structures and minor necking structures. Lineations and grain stacking can also be seen.

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Coarse grained sample, with grains ranging from small to large in size. Shapes range from angular to rounded. This sample is abundant in lineations, and rotation structures can also be seen around larger aggregates. Many large grains are fractured and minor grain stacking can also be seen.

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This is a dark grey, coarse grained sediment with inclusions of fine grained sand. Lineations and grains stacking are the most common features seen, along with grain crushing (mainly edge-to-edge). A few minor rotation structures can also be observed with comet structures.

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Dark grey sediment with medium to small sized grains. The grains are sub-angular in shape. Rotation structures and grain crushing are the most common microstructures seen. Dark organic material and lineations can also be seen.

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Grey sediment with clasts ranging from small to medium in size. Edge-to-edge grain crushing is abundant, with some lineations. Minor amounts of rotation structures can also be seen.

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Dark brown sediment with small to large sized clasts. The clasts are sub-angular to sub-rounded in shape. Lineations are the most abundant. Minor amounts of rotation structures and comet structures can also be seen. Grain crushing is also present throughout the sample.

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Dark brown sediment with clasts ranging from small to large. Clasts are sub-angular to sub-rounded in shape. Larger tend to be more sub-rounded in this sample. Lineations and comet structures are present. Minor amounts of rotation structures can also be seen.

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Dark greyish-brown sediment with clasts ranging from small to large in size. Clasts are sub-angular to sub-rounded in shape. Fine grained domains can be seen scattered throughout the sample. The sample also contains comet structures, lineations, and minor amounts of rotation structures within the coarser domain.

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Grey sediment with clasts ranging from small to medium in size. Clasts are sub-angular to sub-rounded. Rotation structures can be seen throughout. Some clasts have multiple rotation structures surrounding them. Comet structures and lineations are also present.

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Multiple domains are present. Clasts range from small to large in size and sub-angular to sub-rounded in shape. The fine grained domain is dark brown with some lineations and organic material. The coarse grained domain is grey in colour and contains mainly lineations and rotation structures. Some comet structures can also be seen.

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Dark grey sediment with clasts that are large in size. The shape of the clasts range from angular to sub-rounded. Grain stacking can be seen throughout the sample. Minor amounts of rotation structures can also be seen.

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Dark grey sediment with clasts that range from small to medium. The clasts are mainly sub-rounded. Lineations are abundant with minor amounts of rotation structures and comet structures. Grain crushing can also be seen throughout the sample.

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Light brown sediment with clasts ranging from small to large. The clasts range from angular to sub-rounded. Rotation structures are common, along with grain crushing.

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Light brown sediment with clasts ranging from small to large. The clast shape ranges from sub-rounded to rounded. Rotation structures and grain crushing is abundant. Some lineations can also be seen.