The Vermilion District in northeastern Minnesota contains one of the classic Neoarchean Archean granite-greenstone belt terranes in the United States that formed between 2722 Ma to ~2661 Ma. Crustal development during ...

The rocks containing the Crandon deposit are part of the Pembine-Wausau Terrain and formed ~1.85 billion years ago. These formed in a bark-arc setting as part of the Penokean Orogeny. Arc-derived sediments eventually covered ...

An important skill in geology is the ability to visualize spatial relationships of geologic units beneath the Earth. Virtual and physical models allow students to observe and measure geologic structures and visualize their ...

The purpose of this research is to determine the temporal relationship between the intrusions and the surrounding volcanic rocks hosting the Lynne Zn-Cu-Pb deposit in Oneida County, WI. Volcanogenic massive sulfide (VMS) ...

This study examines the sulfide mineralization of three of the ore zones within in the Lynne Zn-Cu-Pb deposit to determine how the mineralizing hydrothermal system formed and evolved over time. These sulfide mineral ores ...

The purpose of this project is to determine the specific style of hydrothermal alteration that occurs within the volcanic strata at Lynne Zn-Cu-Pb deposit. The Lynne deposit is a volcanogenic massive sulfide deposit (VMS) ...

The emplacement of granitoid plutons in Archean granite-greenstone belt terranes can provide a more complete magmatic and deformational history than the volcanic and sedimentary rocks. Granitoid plutons in greenstone belts ...

The primary objective of this research was to describe the petrographic and geochemical characteristics of least-altered felsic volcaniclastic and coherent volcanic rocks that host Zn-Pb-Cu massive sulfides in the Lynne ...