GRD00ZJS0

110-C42

Dolostone

Paleozoic › Ordovician › Late Ordovician
444.0 - 461.0

8

Ritter 154 › Cabinet 18 › Drawer H

fine-grained

Black fine-grained carbonate with local recrystallization and vein-filling. One of the thin sections is very different from the other seven. Original label: Hansen Creek Formation, middle part. July 1954.

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Nevada
Telegraph Canyon, Mineral Hill Quad.
Latitude: 39.9073°
Longitude: -115.8341°

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General texture of slides 1 to 7. Photomicrograph taken of slide 1.

2.5

plane

General texture of slides 1 to 7. Photomicrograph taken of slide 1.

2.5

crossed

General texture of slide 8

2.5

plane

General texture of slide 8

2.5

crossed

Slide 1

scan

crossed

Slide 1

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plane

Slide 2

scan

crossed

Slide 2

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Slide 3

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crossed

Slide 3

scan

plane

Slide 4

scan

crossed

Slide 4

scan

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Slide 5

scan

crossed

Slide 5

scan

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Slide 6

scan

crossed

Slide 6

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Slide 7

scan

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Slide 7

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crossed

Slide 8

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crossed

Slide 8

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GRD00ZJT0: Slide 1: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. Small sparrite vein cross-cuts top of slide. (C. Eichler)

GRD00ZJT1: Slide 2: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. Small sparrite vein cross-cuts top of slide. (C. Eichler)

GRD00ZJT2: Slide 3: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. Small siliceous lense near side of slide. (C. Eichler)

GRD00ZJT3: Slide 4: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. Small sparrite vein cross-cuts corner of slide. (C. Eichler)

GRD00ZJT4: Slide 5: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. (C. Eichler)

GRD00ZJT5: Slide 6: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. (C. Eichler)

GRD00ZJT6: Slide 7: Fine-grained carbonate. Portions are slightly more coarse-grained. Sugary texture. (C. Eichler)

GRD00ZJT7: Slide 8: Very different from the other slides. 70% oolites and pellets, 15% quartz crystals, 10% sparite cement, 5% skeletal material. Quartz crystals are overgrowths on original rounded quartz grains and have replaced the bordering calcite (oolites truncated). Spaces between oolites are filled by optically continuous sparite (each void - a single crystal). 5 mm long crinoid material. (J. Gee)

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