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August 2009 Issue

Limestone IU--courtesy of Indiana University.
Next time you're in Bloomington, head to the second floor of Bryan Hall and check out the fossiliferous red limestone walls. But make sure you come to the Survey first and pick up a copy of "Follow the Limestone: A Walking Tour of Indiana University," a newly available booklet written by IGS geologist Brian Keith and produced by the Bloomington / Monroe County Convention and Visitors Bureau. The booklet guides you through the IU campus, and is full of interesting facts about the architectural styles of the buildings and the stone that was used to construct them.

"Follow the Limestone" is free and is available at the IU Visitor Information Center, the IGS, or at the Bloomington Visitors Center on 2855 N. Walnut Street.
IGS geologist Todd Thompson giving a class
IGS geologists are offering classes and field trips through the IU Bloomington Continuing Studies Lifelong Learning program.

"Whose Fault Is It? The Mt. Carmel Fault in Monroe and Lawrence Counties" will take place on Sept. 24 and Sept. 26. On Thursday evening IGS geologists Brian Keith and Todd Thompson will teach you how to read the new geologic map of Monroe County and to follow the trace of the fault on the map; on Saturday you'll participate in a field trip to look at exposures of the fault along Highway 446.

As part of the "Issues and Experts" lunchtime programs, IGS geologist John Rupp will present "New Uses for an Old Fuel: Coal in Indiana's Future" on Oct. 7 at 12:15 at the Meadowood Retirement Community in Bloomington. Registration is required.

Thumbnail image IGS Guidebook 15
On Sept. 19, the Lost River Conservation Association is holding a public guided tour of the Lost River Karst aquifer system, beginning in Orleans, Ind.

Contact Bob Armstrong (317 253-6951) for more information or to sign up for the trip. Additional tours may also be arranged through him.

And if you can't make it to the public tour, the IGS has a guidebook that is designed to be a self-guided trip of the Spring Mill Lake and Lost River basins in southern Indiana. Karst Geology and Hydrology of the Spring Mill Lake and Lost River Drainage Basins in Southern Indiana is concerned primarily with the karst geology, hydrology, and water quality of the area. It includes a road log describing geologic features along the field trip route from Indianapolis, Indiana, to Spring Mill State Park near Mitchell in Lawrence County, Indiana. An appendix details the driving instructions for the entire field trip route.

Study area
In Indiana, the groundwater in many agricultural areas is susceptible to pollution from agricultural sources such as inorganic fertilizers, crop residues, applied manure, and manure from grazing cattle. Results of an important environmental study by the IGS on this subject have been published in Best Management Practices to Remediate Nitrate Contamination in a Major Outwash Aquifer in Jackson County, Indiana, IGS Occasional Paper 70, by D. Harper and E. Hartke.

This paper resulted from a 4-year field experiment undertaken by the authors, wherein they developed a cooperative effort with local farmers and farm service companies to establish a program to implement best management practices (BMPs) for the application of fertilizer. The project involved intensive groundwater monitoring with the intention of assisting farmers with optimizing the rate, method, and timing of their nutrient applications. Ideally, these BMPs will result in minimizing the influx of nitrate into the local aquifer, which is composed of glacial outwash and windblown sands. The research and recommendations are applicable to similar aquifers of the same composition.

IGS staff photo - 2007
It's been a while since we updated you on staff changes at the IGS, and lately we've welcomed quite a few new faces and said goodbye to some old friends.

Our newest staff member is Paul Rohwer, Programmer and Database Administrator, recently of the IU Alumni Association. He is working on his Ph.D. from IU's School of Informatics and Computing. Prem Radhakrishnan previously held this position, but left to pursue private enterprise as part-owner of 39 Degrees North, a GIS consulting company.

Michael Daniels is our new System Analyst/Programmer and Web Developer. He comes to us from IU's Kelley School of Business. Prior to that he was a Technology Consultant for IU's Technology Services. Michael received his Bachelor of Science degree in Informatics with a minor in Computer Science at IU Bloomington. He took over the position from Nathan Eaton, who recently moved on to a position as GIS developer at Indiana's National Guard at Camp Atterbury.

Walter Gray is our new Education and Outreach Coordinator. Walt has considerable experience as a science teacher at the elementary, middle, and high school levels in both North Carolina and Indiana. In addition, he has organized and taught geologic field workshops in North Carolina and Wyoming. Walt is working on his master's degree in Geochemistry in IU's Department of Geological Sciences. Amzie Wenning, who previously held this position, left the Survey to pursue a career in financial management.

David Jacob is the new Office and Field Assistant in the Subsurface Geology Section. He is replacing Rebecca Lowe, who decided to remain at home after the birth of her baby. David was most recently affiliated with ACM Engineering & Environmental Services and brings considerable experience as a laboratory technician to the position.

Mary Parke, previously of Chevron and the University of California at Berkeley, is filling the new position of Petroleum Geologist. This is her return to Indiana after receiving her B.S. from IU; she also has a Ph.D. from Cornell University. Amongst her many accomplishments are breeding and showing championship Welsh Pembroke corgis.

Shawn Naylor, who came to the Center for Geospatial Data Analysis 1 years ago as Hydrogeologist, has been named the new Director of the Center. Sally Letsinger stepped down from this position to be able to spend more time on research and scholarly activities for the Center.

Sam Frushour, Head of the Field Services Section, retired after nearly 25 years of service to the IGS. Sam is still devoting time to the Survey by working on a major publication about Indiana caves, which we hope to publish next year.

Paul Irwin, GIS and Database Systems Analyst, recently retired after nearly 33 years of service to IU and the IGS. He is enjoying canoeing local waterways and working in his woodshop. His position will remain unfilled for the immediate future.

John Comer, Head of the Geochemistry Section, retired after 20 years of service to the IGS. John is keeping his hand in by acting as editor for an upcoming volume of papers on environmental reclamation for the Survey.

Jennifer Olejnik, Glacial Geologist, left the Survey last year in August to pursue life in northern Indiana and is, at present, staying home to spend more time with her children.

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