Introduction to Black Hills Geology 2017
Presented by Alvis Lisenbee
At The Journey Museum & Learning Center
January 23rd - February 27th
6:30 - 8:30 PM
Cost: $90 or $70 for members of The Journey Museum or Darton Geological Society
Sessions 1 & 2 - January 23rd & January 30th: Introduction
Basic principles of geology in time, major rock types, & origins of mountains, as well as a general outline of the origin of the Black Hills.
Session 3 - February 6th: Precambrian Core of the Black Hills - The Ancient Mountain Range
In Precambrian time, a massive mountain range extended from South Dakota to the present Hudson Bay. Within the U.S., the roots of this range are exposed on in the Black Hills. Includes orgins of schist and slate, the igneous rocks at Mt. Rushmore and Crazy Horse Monument, pegmatites, & the world-class ore deposit of the Homestake Mine.
Session 4 - February 13th: Creation of the Current Black Hills
Origin of the Black Hills and their relationship with the Rocky Mountains. What are Devils Tower, Bear Butte, and the gold deposits in this development?
Session 5 - February 20th: Fossils Through the Ages
Ancient oceans, rivers, and the sedimentary rocks of the Black Hills and Badlands. The record of life's progression through Paleozoic trilobites & corals, Mesozoic dinosaurs and ammonites, and Cenozoic pigs, turtles, and oreodonts of the Badlands.
Session 6 - February 27th: Geology in the Community
Use of geologic maps to determine geologic hazards (floods, landslides, sinkholes), and areas of potential ground water pollution in the areas of recharge for Rapid City.