Gems are objects of wealth, icons of beauty, and emblems of the very best of everything. They are kept as signs of prestige or power. Given as tokens of love and affection, they also come in a kaleidoscopic array of hues and can be either mineral or organic. Gems can command a person’s gaze in the way they play with light and express rich color. And they can evoke feelings of passion, greed, mystery, and warmth.
For millennia, gems have played an important role in human culture: they have significant value, both financially and within folklore and mythology. But just what are gems, exactly? This lavishly illustrated volume—the most ambitious publication of its kind—provides a general introduction to gems and natural gemstones, conveying their timeless beauty and exploring similarities among different species and varieties. Gems and Gemstones features nearly 300 color images of the cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unveiled in a new Grainger Hall of Gems at The Field Museum in Chicago this October. The book and exhibition’s overarching theme will be the relationship between finished gems and their natural origin: while beautiful as faceted and polished pieces of jewelry, gems are often just as lovely—or even more so—as gemstones in their natural state. For example, an aquamarine or emerald as originally found in a mine with its natural crystal faces can be as stunning as any cut and polished gem prepared for a ring, bracelet, or charm.
Thoughtful of both ancient and modern times, Gems and Gemstones also includes fun-filled facts and anecdotes that broaden the historical portrait of each specimen. When Harry Winston, for instance, donated the Hope Diamond to the Smithsonian in 1958, he sent it through the U.S. mail wrapped in plain brown paper. And for anyone who has ever marveled at the innovations of top jewelry designers, Gems and Gemstones features a dazzling array of polished stones, gold objects, and creations from around the world. Diamonds, sapphires, rubies, amethysts, pearls, topaz, amber—every major gem gets its due in what will be an invaluable source on the subject for years to come.
Gems and Gemstones is the basis for the iPad app, available in the Apple iTunes App Store, Gems and Jewels.
First published in 1951, Genesis and Geology describes the background of social and theological ideas and the progress of scientific researches that, between them, produced the religious difficulties that afflicted the development of science in early industrial England. The book makes clear that the furor over On the Origin of Species was nothing new: earlier discoveries in science, particularly geology, had presented major challenges, not only to the literal interpretation of the Book of Genesis, but even more seriously to the traditional idea that Providence controls the order of nature with an eye to fulfilling divine purpose.
A new Foreword by Nicolaas Rupke places this book in the context of the last forty-five years of scholarship in the social history of evolutionary thought. Everyone interested in the history of modern science, in ideas, and in nineteenth-century England will want to read this book.
Complex sets of environmental factors have interacted over the past 5,000 years to affect how changes in climate, temperature, relative precipitation, and the levels of Lake Michigan influence the preservation of archaeological sites in coastal sand dunes along Lake Michigan. As a collaboration between earth scientists, archaeologists, and geoarchaeologists, this study draws on a wealth of research and multidisciplinary insights to explore the conditions necessary to safeguard ancient human settlements in these landscapes. A variety of contemporary and innovative techniques, including numerous dating methods and approaches, were employed to determine when and for how long sand dunes were active and when and for how long archaeological sites were occupied. Knowledge of dune processes and settlement patterns not only affects archaeological interpretations, but it is also consummately important to land planners responsible for managing heritage archaeological sites in the Lake Michigan coastal zone.
Conservation and development of natural resources are issues of critical importance throughout the world. These issues have been matters of public concern in Texas since legislators first adopted the state-sponsored geological survey as a means of extending government funds to private citizens who would help develop and advertise the mineral and agricultural wealth of Texas.
Walter Keene Ferguson examines the relation of politics to geological exploration during a critical period in Texas history—the first half-century of statehood. Although Texas shared its frontier experience with many other areas, it could not rely on federal aid in the form of land grants because the state government controlled the destiny of the public domain at all times. Acrimonious debate between farmers and urbanites of East Texas and pioneer ranchers of arid West Texas rendered the disposition of public lands even more difficult.
As tools for developing and advertising resources, the geological and agricultural surveys of 1858 and 1867 fulfilled the demands of expectant capitalism made by politicians, speculators, and railroad entrepreneurs. Reconnaissance geologists publicized the wealth of Texas.
Drought in 1886 and popular agitation against squandering of state land caused the emergence of a new concept of the geological survey as an instrument of land reform and public assistance. Lobbying by reformers and scientific organizations led to the formation of the Dumble Survey in 1888 and the University of Texas Mineral Survey in 1901. Stratigraphic analysis of the “individualities” of Texas geology helped the state realize its full economic potential and led to legislation to protect public mineral land from exploitation.
The youthful oil industry finally removed geological exploration from the political arena. As part of the University, a permanent Bureau of Economic Geology was established in 1909 to extend the benefits of scientific research to private citizens and state organizations on a nonpartisan basis.
Ferguson’s analysis of geological surveys in Texas contributes to an understanding not only of the geology and history of the state but of the urgent problem of evaluating the natural resources of underdeveloped regions.
Media history is millions, even billions, of years old. That is the premise of this pioneering and provocative book, which argues that to adequately understand contemporary media culture we must set out from material realities that precede media themselves—Earth’s history, geological formations, minerals, and energy. And to do so, writes Jussi Parikka, is to confront the profound environmental and social implications of this ubiquitous, but hardly ephemeral, realm of modern-day life.
Exploring the resource depletion and material resourcing required for us to use our devices to live networked lives, Parikka grounds his analysis in Siegfried Zielinski’s widely discussed notion of deep time—but takes it back millennia. Not only are rare earth minerals and many other materials needed to make our digital media machines work, he observes, but used and obsolete media technologies return to the earth as residue of digital culture, contributing to growing layers of toxic waste for future archaeologists to ponder. He shows that these materials must be considered alongside the often dangerous and exploitative labor processes that refine them into the devices underlying our seemingly virtual or immaterial practices.
A Geology of Media demonstrates that the environment does not just surround our media cultural world—it runs through it, enables it, and hosts it in an era of unprecedented climate change. While looking backward to Earth’s distant past, it also looks forward to a more expansive media theory—and, implicitly, media activism—to come.
This detailed interpretive guide explains the forces that created Utah's unforgettable scenery, while providing road logs of highways and major backroads through the Grand Staircase of the Colorado Plateau.
Where in Utah can you find a fossilized ant hill that is at least fifty million years old? Do you know the location of an ancient beach that disappeared along with the dinosaurs that strolled it? Find out in The Geology of the Parks, Monuments, and Wildlands of Southern Utah.
This fascinating and authoritative guide belongs on the dashboard or in the backpack of every visitor to southern Utah or student of its natural history. More than sixty illustrations and nearly three dozen photographs accompany clear explanations of the spectacular geologic features of this landscape, including Capitol Reef, Bryce Canyon, and Zion National Parks, as well as the Grand Staircase-Escalante Monument.
Section I of the volume surveys chronologically the origins of the formations and structural features and the geologic processes that have shaped the Colorado Plateau. Section II provides road logs with mile-by-mile geologic descriptions of key sections of highway traversing this area.
This detailed interpretive guide turns any windshield into a window of opportunity for understanding the forces that created Utah’s unforgettable scenery—whether it be a breathtaking panorama or a dazzling array of fins and fractures, pillars and pedestals, or cliffs and chasms.
The Ice Age National Scenic Trail meanders across the state of Wisconsin through scenic glacial terrain dotted with lakes, steep hills, and long, narrow ridges. David M. Mickelson, Louis J. Maher Jr., and Susan L. Simpson bring this landscape to life and help readers understand what Ice Age Wisconsin was like. An overview of Wisconsin’s geology and key geological concepts helps readers understand geological processes, materials, and landforms. The authors detail geological features along each segment of the Ice Age Trail and at each of the nine National Ice Age Scientific Reserve sites.
Readers can experience the Ice Age Trail through more than one hundred full-color photographs, scores of beautiful maps, and helpful diagrams. Science briefs explain glacial features such as eskers, drumlins, and moraines. Geology of the Ice Age National Scenic Trail also includes detailed trail descriptions that are cross referenced with the science briefs to make it easy to find the geological terms used in the trail descriptions. Whatever your level of experience with hiking or knowledge of glaciers, this book will provide lively, informative, and revealing descriptions for a new understanding of the shape of the land beneath our feet.
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