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Conor's Geology Book

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Conor's Geology Book - Page Text Content

BC: The End

FC: Geology of Dry Falls, WA By: Conor Jorgensen

1: Basalt is the rock present in this photo. It is a fine-grained mafic igneous rock that is most common in the Dry Falls area.

2: Fracture: the characteristic appearance of the surface of a broken mineral, such as a crack or fault in a rock.

3: Riverbed: the area between the banks of a river ordinarily covered by water.

4: Talus apron: a wedge-shaped pile of rock fragments that accumulates at the base of a cliff.

5: The angular basalt seen above resulted from a short transport of the sediment. Meaning the farther the sediment travels the more rounded and smooth it becomes. With that being said because of the angular sediment it traveled a short distance.

6: The distance sediment travels determines if it wil be poorly sorted or well sorted. Since this particular sediment is poorly sorted, that means it has traveled a short distance.

7: Oxidation: a reaction in which an element loses electrons. It can occur in a dry environment, but water greatly increases the rate of oxidation

8: Lichen: fungus that grows symbiotically with algae, resulting in a composite organism that characteristically forms a crustlike or branching growth on rocks or tree trunks.

9: Physical weathering: the process in which intact rock breaks into smaller grains or chunks.

10: Gully: a channel or deep ditch cut in the earth by running water after a prolonged downpour.

11: The vegitation present acts as a stabalizer for the talis apron.

12: Spit: a deposition landform found off coasts. It is a type of bar or beach that develops where a re-entrant occurs, such as at a cove, bay, or river mouth. They form by the movement of sediment along a shore.

13: Colunar Basalts: rock formations resulting from the quick cooling of lava flow.

14: Spine: a ridge resulting from a mountain or hill with sharp, pointy edges.

15: Biological weathering: the process of change in the state of soil or rock through actions such as burrowing or root growth undertaken by living organisms

16: A thin top layer of soil.

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  • By: Conor J.
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