By Ralph J. Roberts

Ralph Roberts's isn't really a family identify in Nevada, however it should still be-it was once he who came across the Carlin Belt gold deposits that created a massive mining increase within the nation within the final 4 many years of the 20th century. yet this discovery used to be just one episode of his remarkably eventful lifestyles. a fondness for Gold is Roberts's account of that existence, a narrative as colourful and adventurous as that of any fictional hero. Roberts's engagingly informed autobiography strains his lifestyles from its beginnings in japanese Washington nation to his repute as a world-renowned geologist, skillfully alternating own reviews with the advance of his figuring out of the constitution of Nevada's geology and the forces that formed it. His fascination with ore-bearing minerals resulted in an extended and effective occupation with the U.S. Geologic Survey, which took him to prolonged postings in principal the US and later to Saudi Arabia, the place he used to be instrumental within the redevelopment of the traditional gold mines at Mahd adh Dhahab, very likely the positioning of the biblical Ophir. yet he again many times to Nevada, intrigued through its geological complexity and the dear minerals that lay hidden underneath its convoluted surfaces, and was once excited about the advance of many of the state's most vital gold-mining parts. Roberts's account conveys his abiding enthusiasm for the methods of geology, and his fascinating textual content permits his reader to proportion and keep in mind that enthusiasm. His tale is that of a geologist of bizarre astuteness, a guy whose specialist successes have been simply a part of a lifestyles marked by way of devotion to family members and an unremitting interest in regards to the international and other people round him.

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Other major factors in creating these deposits include folding, faulting, and fracturing, and igneous rocks associated with those movements. Regional folding in north-central Nevada involves Jurassic rocks, and is therefore Jurassic or younger (Ferguson, Roberts, and Muller, 1952). This framework established a pattern of northwesterly trending folds and faults in the region, perhaps best shown by the Antler anticline in the vicinity of Antler Peak (Roberts, 1965). Faults and fractures on the flank of the anticline are important features that localize ore at Copper Canyon and Copper Basin.

Adolph Knopf taught advanced general geology, a course designed to take students back to times when little was known about the world and to discuss fundamental problems such as the age of the earth and the evolution of ideas in geology. His approach encouraged students to expand their horizons and to conceptualize the big picture by reaching beyond the sometimes limiting views of the day. Knopf was an expert in petrography and petrology, and I now know that it was a rare privilege to be a student in his classroom.

It didn’t take me long to become totally hooked on the rocks of the region. Certainly they were new to me, but they gave tantalizing Sonoma Range, 1939–1942 35 Image Not Available Fig. 3. Gold nuggets from Calder placer, Willow Creek, East Range, about forty-five miles southwest of Winnemucca. The dark gangue mineral is quartz. Courtesy of Lois Calder Baum. glimpses of spectacular formations folded into complex structural forms. They reminded me of photographs and drawings of the Alps I had seen in textbooks.

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