Discovery Park

The field trip to Disc overy Park was useful in conducting a geological study on the quaternity storeys of stand by that describe the physical hi write up of the Puget legal. beneficial by sounding at the sediment the quadruplet tiers dissever an interesting story of how the Puget in effect(p) was formed. 35,000 years ago the Puget Sound was flat repose with rivers flowing through it, this started the first of the four stratums. The agingest layer of the four is called the capital of Washington Formation, it is 35,000 years old and was deposited by rivers before a glacier came and blocked the rivers and made the Puget Sound into a large lake. The Olympia Formation is know to reverse ripples and has iron oxides in the sediment which explains why it is a rubicund brown color. The second oldest layer is called the Lawton Formation; it is made up of clay that was formed by slow moving water, exchangeable the lake that the glacier created. The clay is very sanitary sort ed, but also contains waste stones that were deposited by the glacier. The second youngest layer is called the Esperance Formation and was deposited as frigid outwash sediment. The cross bedding in the sediment indicates that water erstwhile flowed in a gray direction. The sediment is fine-grained indicating a fast moving or high-energy body of water. The youngest layer is called the Vashon Formation and unlike the other(a) layers it is poorly sorted, this was due to the glacier moving over the Puget Sound and depositing glacial till. If you want to get a bounteous essay, order it on our website: OrderEssay.net

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