Geology News
South Dakota Current Events

Since 1972 the “Roadside Geology” series has provided introductory information on the geology of states and small regions of the United States.

The books provide a combination of maps, travel logs, photos and commentary for the geology that can be seen along highways or visited at parks and public viewing areas. They are popular with geologists, teachers, students and others who are interested in the Earth.

The folks at MyTopo.com are now printing supersized topo maps; large enough make a huge 8′ x 5′ (or 5′ x 8′) map that will look fantastic on the wall of your office, conference room, lobby, cabin or den. These maps are custom-centered on any location that you pick using their online map-making tool.

We are affiliates of MyTopo.com and receive a commission on sales.

Raven Maps are beautiful examples of shaded-relief wall maps that display the elevation of a state in vibrant colors. These large maps look great in a classroom, den or office. Use one to mark the locations of your work or company.

Petrified Forest National Park is the most famous location in the world for observing petrified wood. It is one of several government and private parks in the United States that feature petrified wood.

USGS has published: Saturated thickness and water in storage in the High Plains aquifer, 2009, and water-level changes and changes in water in storage in the High Plains aquifer, 1980 to 1995, 1995 to 2000, 2000 to 2005, and 2005 to 2009.

The Center for Disease Control reports record levels of West Nile virus in humans. Over 70 percent of the cases have been reported from six states (Texas, South Dakota, Mississippi, Oklahoma, Louisiana, and Michigan) and almost 45 percent of all cases have been reported from Texas. The common symptoms are fever and neck stiffness

“The importance of hydropower as a source of electricity generation varies by geographic region. While hydropower accounted for 8% of total U.S. electricity generation in 2011, it provided over half of the electricity in the Pacific Northwest. Because hydroelectric generation relies on precipitation, it varies widely from month to month and year to year.” Quoted from the Energy Information Administration article.

US Topo is the new generation of digital topographic maps from the U.S. Geological Survey.

New US Topo maps for Wyoming and South Dakota are available, with the introduction of Public Land Survey and other new data.

The Lower Brule Sioux Tribe estimates that the Reservation is losing approximately 8 feet of shoreline per year in some locations along the Missouri River in South Dakota. USGS will monitor the erosion using unmanned flights.

USGS image, miner at right for scale.

“The crystals are often of enormous size. In the Etta Mine, where they are best exposed both in the open cut and tunnel, they frequently attain a diameter of 3 to 4 feet and a length of 30 feet. The largest “log” so far found was 42 feet long and 5 feet 4 inches in maximum diameter. This one log alone would yield 90 tons of spodumene.”

Mountain Press Publishing has released a new book by Albert B. Dickas titled: 101 American Geo-Sites You’ve Gotta See.

It provides a two-page presentation on each site that features photos, text and a map. It is a good way to get a quick glimpse of these 101 fantastic sites. It sells for $23.99.

See a table of contents.

The-Vug.com has an impressive listing of mineral clubs organized by state. You might be surprised at how many clubs are listed and there is probably one that meets within a short drive of your home.

“Non-hydroelectric renewable generation has increased in many states over the past decade. In 2011, Maine had the highest percentage of non-hydroelectric renewable generation, at 27% of total in-state generation, up from 20% in 2001 (see maps). South Dakota and Iowa followed, with 21% and 17%, respectively, in 2011, up from 1% and less than one percent in 2001. Wind is the largest driver of this increase across all states.” Quoted from the Energy Information Administration press release.

“The importance of hydropower as a source of electricity generation varies by geographic region. While hydropower accounted for 6% of total U.S. electricity generation in 2010, it provided over half of the electricity in the Pacific Northwest.” Quote from the Energy Information Administration article.

USGS has recently published: “Monitoring Floods and Fires during the Summer of 2011 — The Value of the Landsat Satellite 40-Year Archive“