13 resultados para WEATHERED PYROCHLORE

em Brock University, Canada


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Fractured and weathered grains throughout the section. Lineations and grain stacks throughout the section.

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Coarse grained sample with clay stained domains. Grains range from small to medium in size and are sub-angular. Lineations, weathered grains, and minor grain stacking.

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Brown sediment with well dispersed clasts. Clasts range from small to medium in size and angular to sub-rounded in shape. Some appear to have been weathered. Water escape structures can be seen, mainly in finer, clay rich sediment. Lineations can also be seen throughout the sample. Minor grain stacking and crushing are also present.

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Light brown sediment with clasts ranging from small to large. Many clasts appeared to be weathered. Clast shape ranges from angular to sub-angular. This sample contained a lot of dark organic material scattered throughout it. Minor amounts of rotation structures and lineations can also be seen.

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Dark brown sediment with clasts ranging from small to large in size. The clast shape ranges from angular to sub-rounded. Clasts appear fractured, weathered, and are well dispersed. Lineations and rotation structures are commonly seen throughout the sample. A few comet structures and grain stacks can also be seen.

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Dark brown sediment with clasts ranging from small to large in size. Clast shape ranges from angular to sub-rounded. Many grains in this sample are fractured and/or weathered. Lineations are abundant throughout this sample. Rotation structures and necking structures can also be seen mainly around/between large clasts. Crushed grains and comet structures are also present in minor amounts.

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Dark brown sediment with clasts ranging from small to large in size. Grain shape ranges from angular to rounded. Lineations can commonly be seen throughout the sample. Many clasts are fractured and/or weathered. Necking structures, some rotation structures, and minor amounts of grain crushing can also be seen.

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Greyish-brown sediment with clasts ranging from small to large in size. Grain shape ranges from angular to rounded in shape. Many grains appear to be fractured or weathered. Lineations and rotation structures are abundant within this sample. Grain crushing and stacking can also be seen in this sample. Comet structures are also present in minor amounts.

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Dark grey sediment with clasts ranging from small to large size. Grain shape ranges from angular to rounded. Many grains are fractured and weathered. Necking structures, along with rotation structures, are very common in this sample. They can be seen between many of the larger aggregates. Lineations and grain crushing are also present throughout.

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Dark grey sediment with clasts ranging from small to large in size. Grain shape ranges from angular to rounded. Many grains are fractured and/or weathered. Edge-to-edge grain crushing is abundant in this sample, and some crushed grains can also be seen. It also contains lineations and rotation structures throughout. Minor amounts of comet structures can also be seen.

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Brown sediment with clasts ranging from small to large in size. Clast shape ranges from sub-angular to sub-rounded. Many larger clasts appear fractured and/or weathered. Lineations and rotation structures can be commonly seen. Comet structures are also present. Minor amounts of grain crushing and stacking can also be seen.

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Contains a fine grained, dark grey ground mass. Clasts range from small to large in size and sub-angular to sub-rounded in shape. Minor amounts of lineations can be seen. Certain clasts appear weathered.

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Brown sediment with clasts ranging from small to medium in size. Clast shape ranges from angular to sub-rounded. Rotation structures and comet structures are commonly seen throughout this sample. Lineations are also common. Minor amounts of grain stacking can also be seen. Some grains appear to be fractured and/or weathered.