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Filtering by: Plumas County Academic Affiliation Geosciences

Mineralogy and geochemistry of copper deposits of the Lights Creek Stock, California : an assessment of porphyry versus iron-oxide copper origin

Creator:

Stephens, Abigail E.

Abstract:

The Lights Creek Stock is an 18 square kilometer copper-bearing granitoid intrusion within the Plumas Copper Belt in the northern California Sierra Nevada. Engels Mine, Superior Mine, and Moonlight Valley represent the main copper-mineralization in the Lights Creek district and small prospects include the Ruby Mine, and Moonlight Creek. The...

Resource Type:

Masters Thesis
The influence of aging dams and geography on the distribution of dam removals in the United States

Creator:

Ashley, Sara

Abstract:

Over 470 dams have been removed in the United States, and a significant increase in dam removals has occurred since the early 1990s. The aging of dams is often cited as the primary factor influencing removals; as dams surpass their functional life span, safety hazards, economic costs, and environmental concerns...

Resource Type:

Capstone Project

Full Text:

on general locations within the county or state of the removal (depending on the extent of the data