168 resultados para Grain crushing


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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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Two main domains can be seen in this sample. One is coarse grained with clasts ranging from small to medium in size. The other is very fine grained, and a very dark brown, potentially influenced by organic material. Grain crushing and lineations can be seen in the coarser domain.

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Coarse grained sample with inclusions of finer grained sediment. Clasts are small to large in size and angular to sub-rounded in shape. Grain crushing is abundant in this sample, and lineations and minor grain stacks 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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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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Dark brown sediment with mainly small clasts. The clasts range from sub-angular to sub-rounded. Lineations are abundant throughout the sample. Comet structures are also present throughout the sample. Minor amounts of grain crushing and stacking 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.

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Mainly coarse grained with a separate fine grained clay domain occurring throughout the sample. The coarse grained domain contains clasts that range from small to medium in size. The clast shape ranges from angular to sub-angular. Grain crushing is abundant in this sample, along with lineations, and minor amounts of rotation.

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Grey sample with clasts that range from small to medium in size. The clast shape ranges from angular to sub-rounded. It mainly contains lineations and grain crushing. A few comet structures are also visible throughout the sample.