The Hailey Public Library will host a free talk by Don J. Easterbrook, emeritus professor of geology at Western Washington University, titled “Idaho Geology: From Pre-Cambrian to Cenozoic” on Wednesday, Oct. 23, at 5:30 p.m.

    This is the first of two talks on Idaho geology. The next talk, to be held later this fall, will focus on the impact of the Pleistocene ice ages on Idaho landforms.

    “We are fortunate to have someone of Dr. Easterbrook’s stature explain Idaho’s complex geologic history,” Adult Program Specialist Kristin Fletcher said. “It’s an incredible story—vast inland seas, extraordinary uplift of what became the Rocky Mountains, widespread intrusion of molten granite followed by extensive basaltic lava flows.”

    Easterbrook has been a Wood River Valley resident since 1998 and is the author of “Geology of Sun Valley, Idaho,” published in 2018. He has written a dozen books, 200 professional geological papers and presented 31 papers at international meetings in more than a dozen countries. He was chairman of the WWU geology department for 12 years and served as U.S. representative to the UN International Geological Correlation Program. He has received numerous awards and appeared on national TV network shows at MSNBC, CNN, CBS and FOX.

    For more information about this and other talks, call 208-788-2036 or visit  The library is at 7 W. Croy St.

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