Geotimes is a free electronic newsfeed for the geoscience community. Originally launched as GeoSpectrum, a newsletter of the American Geosciences Institute in 1995, Geotimes has been reborn as the go-to source of information on AGI's 52 Member Societies. The American Geosciences Institute coordinates and edits Geotimes, but it is the result of contributed materials from societies, geoscience organizations and others in the community.

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GeoCorps™ Underground

by Jake Tholen, Montana State Parks AmeriCorps Member

I think to myself, just breathe out. Drop the shoulders, put one arm through, relax the muscles, and ease through the constriction. Try with the helmet on, but it might be better to pass it through on its own. Push with your legs, don’t pull with your arms. Navigating a squeeze in a cave can be difficult and nerve-wracking. Besides the physical challenge of contorting to fit through an opening most would consider far too small, there’s the mental challenge. While it is very unlikely and rare, the intrusive thoughts of getting stuck and the incessant replaying of the escape route play through one’s mind. I had intentionally placed myself in this tight spot, with a smile on my face no less, thanks to not one but several experiences with the GeoCorps Program.

GSW: Rudnick on Earth’s continents

The 1526th meeting of the Geological Society of Washington will be on
Friday, January 26, 2018
featuring :

GSW’s 125th birthday party and the Quasquicentennial Lecture:

Roberta Rudnick
University of California – Santa Barbara

“Earth’s Unique Continents”

AEG-DMV Spring Environmental and Engineering Geology Symposium

The Association of Environmental and Engineering Geologists (AEG) D.C.-Maryland-Virginia (DMV) Chapter and the Radford University AEG student chapter are pleased to announce the Fourth Annual Spring Environmental and Engineering Geology Symposium. The spring symposium was established to provide a forum for the exchange of ideas, allow students to meet potential employers, and further the fellowship that exists between geoscientists.

AEG-DMV Spring Environmental and Engineering Geology Symposium

March 23 – 24, 2018

Radford, VA

AEG: Eisner on Effective Source Water Protection

Association of Environmental & Engineering Geologists

D.C. – Maryland – Virginia Chapter (

Thursday, January 18, 2018, from 5:30 PM to 7:45 PM at Brewer’s Alley in Frederick, MD

AEG Members $40, Non-members $45 (includes dinner; student and retiree discounts available). Please register by Monday, January 15, via online payment (

Mark Eisner, President

Advanced Land and Water, Inc.


orthogenesis (or-tho-gen'-e-sis). Evolution that follows a single direction or specific trend continuously for many generations of an evolving lineage, and commonly appears independent of the effects of natural selection or other external factors. Cf: rectilinear evolution. Syn: straight-line evolution.

Stable isotopes offer novel methods of disease detection

Stable isotope techniques developed by geoscientists are being applied to studies of human health, and one in particular has shown promise as an improved way to determine bone loss, a problem for astronauts, as well as those on bed rest and aging populations here on Earth. 

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