156 books match the query 'Geology' and 6 start with o

cover of Obsidian, Second Edition: Advances in Geological and Archaeological Obsidian Studies in the North American Southwest

Obsidian, Second Edition

Advances in Geological and Archaeological Obsidian Studies in the North American Southwest

M. Steven Shackley

University of Arizona Press, 2027

Archaeological obsidian studies in the American Southwest and beyond have significantly matured in the last two decades. Like ceramic analysis, obsidian artifact analysis has become a key factor in many archaeological projects because obsidian used to produce chipped stone tools is common across time periods in the Southwest—from Paleoindian through colonial periods. Even today, making stone tools from obsidian is used in teaching. 

In the last twenty years, not only have the ways archaeologists use obsidian provenance to address twenty-first-century issues changed, but we now also see geologists and paleontologists using obsidian in ways never before imagined.

In the second edition of Obsidian, author M. Steven Shackley examines the newly discovered sources of archaeological obsidian and other volcanic rocks on both sides of the U.S.-Mexico border. This work has aided in building new inferences concerning exchange, group interaction, and social networks: subjects that were only emerging twenty years ago in obsidian studies. 

The field of obsidian provenance studies is truly international, linking archaeologists and geologists in the United States like never before. While the obsidian sources covered in this volume are regionally specific, the applications and methods used in the understanding of source recording, composition issues, and provenance are relevant worldwide.

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cover of Obsidian: Geology and Archaeology in the North American Southwest

Obsidian

Geology and Archaeology in the North American Southwest

M. Steven Shackley

University of Arizona Press, 2005

Obsidian was long valued by ancient peoples as a raw material for producing stone tools, and archaeologists have increasingly come to view obsidian studies as a crucial aid in understanding the past. Steven Shackley now shows how the geochemical and contextual analyses of archaeological obsidian can be applied to the interpretation of social and economic organization in the ancient Southwest. This book, the capstone of decades of investigation, integrates a wealth of obsidian research in one volume. It covers advances in analytical chemistry and field petrology that have enhanced our understanding of obsidian source heterogeneity, presents the most recent data on and interpretations of archaeological obsidian sources in the Southwest, and explores the ethnohistorical and contemporary background for obsidian use in indigenous societies. Shackley provides a thorough examination of the geological origin of obsidian in the region and the methods used to collect raw material and determine its chemical composition, and descriptions of obsidian sources throughout the Southwest. He then describes the occurrence of obsidian artifacts and shows how their geochemical fingerprints allow archaeologists to make conclusions regarding the procurement of obsidian. The book presents three groundbreaking applications of obsidian source studies. It first discusses an application to early Preceramic groups, showing how obsidian sources can reflect the range they inhabited over time as well as their social relationships during the Archaic period. It then offers an examination of the Late Classic Salado in Arizona’s Tonto Basin, where obsidian data, along with ceramic and architectural evidence, suggest that Mogollon migrants lived in economic and social harmony with the Hohokam, all the while maintaining relationships with their homeland. Finally, it provides an intensive look at social identity and gender differences in the Preclassic Hohokam of central Arizona, where obsidian source provenance and projectile point styles suggest that male Hohokam sought to create a stylistically defined identity in at least three areas of the Hohokam core area. These male “sodalities” were organized quite differently from female ceramic production groups. Today, obsidian research in the American Southwest enjoys an equal standing with ceramic, faunal, and floral studies as a method of revealing social process and change in prehistory. Shackley’s book discusses the ways in which archaeologists should approach obsidian research, no matter what the region, offering a thorough survey of archaeological obsidian studies that will have methodological and theoretical applications worldwide. The volume includes an extensive glossary created specifically for archaeologists.
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cover of Off-Trail Adventures in Baja California: Exploring Landscapes and Geology on Gulf Shores and Islands

Off-Trail Adventures in Baja California

Exploring Landscapes and Geology on Gulf Shores and Islands

Markes E. Johnson

University of Arizona Press, 2014

Baja California is one of the Earth’s last great wilderness areas that is easily accessible to travelers. Whether you enter from the United States to the north or from Cabo San Lucas to the south, it doesn’t take long to find yourself passing through a unique desert ecosystem of islands and land bound by the Pacific Ocean on the west and the Gulf of California on the east. But where, you might ask, can you go to best experience the physical majesty of Baja California? This book holds the answer.

Off-Trail Adventures in Baja California describes—and maps and illustrates—nine hikes along outcrops on islands and peninsular shores where geography, geology, and ecology meet in singular ways. Each spot tells a story about the nature of the place—the cumulative effects of millions of years of natural forces at work. During the course of his long teaching career, Markes E. Johnson has hiked much of Baja California, often with students in tow. He brings a lifetime of study to his simple descriptions of the stories that are revealed by looking closely at natural phenomena framed by rocks and fossils.

This hiking guide offers a wealth of stories that seem to encompass everything, and can clearly communicate Johnson’s deep understanding of how our planet’s ecosystems function. Whether you like to hike with your boots on or from the comfort of your favorite chair, this book is a must-have for anyone who has visited or hopes to visit Baja California’s Gulf Coast.
 
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cover of Oregon Fossils, Second Edition

Oregon Fossils, Second Edition

Elizabeth L. Orr

Oregon State University Press, 2009

This revised and expanded edition of Oregon Fossils includes a record of all known fossils in Oregon going back 400 million years, along with collecting localities by county, age, rock formation, and published source. The book also provides a geologic overview of the state, from ocean beaches to the high desert, from the Blue Mountains to the Siskiyous.

Unique among fossil field guides, Oregon Fossils includes both specimen identification and interesting notes about their discovery, naming, and conservation. The narrative is sprinkled with biographical sketches of paleontologists who have contributed to the state’s fossil record, and the text is richly illustrated with photographs, line drawings, charts, and maps. A complete bibliography lists full citations to fossil material. The only single volume that provides Oregon’s fossil record and history, Oregon Fossils is a well-written, well-organized guide. It is an excellent reference for classroom and library use, for researchers, and for private collectors and hobbyists.
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cover of Oregon Geology

Oregon Geology

Elizabeth L. Orr and William N. Orr

Oregon State University Press, 2012

Because Oregon sits on the leading edge of a moving crustal plate, a striking diversity of geologic events have molded its topography. Over a century of study, a deeper understanding of the region’s tectonic overprint has emerged. In this timely update to the 2000 edition, Elizabeth and William Orr incorporate that new knowledge, addressing current environmental problems and detailing tectonic hazards. “Caught between converging crustal plates,” the Orrs write, “the Pacific Northwest faces a future of massive earthquakes and tsunamis.”

A comprehensive treatment of the state’s geologic history, Oregon Geology moves through Oregon’s regions to closely examine the unique geologic features of each, from the Blue Mountains to the Willamette Valley, from the high lava Plains to the Coast Range.

The book includes biographical sketches of notable geologists. It is lavishly illustrated and includes an extensive bibliography.

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cover of Otherworldly Antarctica: Ice, Rock, and Wind at the Polar Extreme

Otherworldly Antarctica

Ice, Rock, and Wind at the Polar Extreme

Edmund Stump

University of Chicago Press, 2024

With stunning original photographs, an Antarctic scientist and explorer takes us to one of the most sublime, remote, and pristine regions on the planet.
 
The interior of Antarctica is an utterly pristine wilderness, a desolate landscape of ice, wind, and rock; a landscape so unfamiliar as to seem of another world. This place has been known to only a handful of early explorers and the few scientists fortunate enough to have worked there. Edmund Stump is one of the lucky few. Having climbed, photographed, and studied more of the continent-spanning Transantarctic Mountains than any other person on Earth, this geologist, writer, and photographer is uniquely suited to share these alien sights.

With stories of Stump’s forty years of journeys and science, Otherworldly Antarctica contains 130 original color photographs, complemented by watercolors and sketches by artist Marlene Hill Donnelly. Over three chapters—on the ice, the rock, and the wind—we meet snowy paths first followed during Antarctica’s Heroic Age, climb the central spire of the Organ Pipe Peaks, peer into the crater of the volcanic Mount Erebus, and traverse Liv Glacier on snowmobile, while avoiding fatal falls into the blue interiors of hidden crevasses. Along the way, we see the beauty of granite, marble, and ice-cored moraines, meltwater ponds, lenticular clouds, icebergs, and glaciers. Many of Stump’s breathtaking images are aerial shots taken from the planes and helicopters that brought him to the interior. More were shot from vantages gained by climbing the mountains he studied. Some were taken from the summits of peaks. Many are of places no one had set foot before—or has since. All seem both permanent and precarious, connecting this otherworld to our fragile own.
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