Wall Maps of US States|
December 1, 2013 | Geology.com Store
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.
Roadside Geology Guides|
November 25, 2013 | Geology.com Store
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.
November 17, 2013 | CNN
Tornadoes have severely damaged several communities in Illinois and Indiana, and continue moving east. Several people have been killed and neighborhoods have been completely destroyed.
Quarry Blast Triggered Release of Tectonic Strain?|
November 17, 2013 | ABC Local
On November 4 people throughout the Chicago area were frightened by ground motion that was thought to have been a powerful blast at a quarry south of the city. Now, USGS believes that a small blast at the quarry may have triggered an earthquake about seven seconds later.
Quarry Blast Frightens Chicago?|
November 5, 2013 | Chicago Tribune
At shortly after noon today, people throughout the Chicago area were frightened because they thought that an earthquake was occurring. A USGS scientist reported that it appeared to be an unusually strong quarry blast south of Chicago. A portion of the USGS “Did you feel it?” map is shown below with more USGS data here. People as far away as Wisconsin and Indiana claimed that they felt the shaking.
Nitrate in the Illinois River|
November 3, 2013 | USGS
“Nitrate levels in the Illinois River decreased by 21 percent between 2000 and 2010, marking the first time substantial, multi-year decreases in nitrate have been observed in the Mississippi River Basin since 1980.” Quoted from the USGS press release.
Higher Risk in the New Madrid Seismic Zone|
October 17, 2013 | USGS
New research provides insight on why the New Madrid Seismic Zone is unique and may continue to pose a higher earthquake risk than adjacent areas in the central United States.
Fee Mining Sites
Geology.com and RockTumbler.com are
both GeoShops.com websites.
May 24, 2013 | RockTumbler.com
Lots of people enjoy going to fee mining sites where you can prospect inactive surface mines, mine tailings, soil, sediments or outcrops and keep any rocks, gems, minerals or fossils that you find. Examples include: Herkimer Diamond Mines where you can search for doubly-terminated quartz crystals, and Crater of Diamonds where you might be lucky enough to find a real diamond.
Illinois Severance Taxes and Drilling Fees?|
March 19, 2013 | ShaleReporter.com
An article in the ShaleReporter reviews proposed drilling fees and a severance tax on wells that will use hydraulic fracturing to tap the New Albany Shale and similar rock units in Illinois.
Illinois Golfer Falls into Sinkhole|
March 13, 2013 | St. Louis Post-Dispatch
A golfer fell into a sinkhole while playing a course near Waterloo, Illinois – fortunately the 18-foot fall left him with only minor injuries. The course is over shallow, cavernous limestone.
Sinkholes in Illinois|
March 13, 2013 | Illinois Geological Survey
The Illinois Geological Survey has a publication titled: Karst Landscapes of Illinois. From the publication “Two conditions are necessary for karst landscapes (green areas on map): (1) Soluble rocks, generally limestone and dolostone, must lie at or near the surface of the ground. (2) The loose soil covering the soluble bedrock must be thinner than about 50 feet.”
Falling Water Levels in the Great Lakes|
January 18, 2013 | CNN
Water levels on the Great Lakes were at December record lows last month, causing problems at some ports and requiring some cargo ships to lighten their loads.