Geologic History of Middle California
Only recently has the astonishing modern theory of moving crustal plates enabled us to understand fully how the picturesque landscape of the San Francisco Bay Region and its surrounding areas has come into existence. In this book Howard tells the dramatic story, illustrated by clear, graphic sequential drawings: the continual remaking of the earths surface on a time scale so immense human minds can scarcely grasp it.
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Geology Underfoot in Illinois
Illinois--a flat and boring state with nothing but cornfields and crowded expressways, right? Balderdash! Geology Underfoot in Illinois scratches the Prairie State's surface to expose geologic diversity that stretches back more than a billion years.
Copious illustrations and witty, page-turning prose guide readers on geologic walking or driving tours of thirty-seven sites in Illinois. Enjoy an unexpected exploration of Chicago's architectural geology. Embark on a fault-seeking expedition in Mark Twain's big-river country. Or try moraine-surfing on Interstates 55 and 74. With a touch of curiosity and Geology Underfoot in Illinois in hand, you will view the state with a new sense of wonder.
Roadside Geology of Oregon
Until about 200 million years ago, the western margin of North America lay to the east, along the present Idaho border, and a broad coastal plain spread westward into Oregon. The rest of the state was ocean floor. Then the continent began moving slowly westward away from Europe and the floor of the Pacific Ocean began sliding beneath the western edge. That is what created Oregon, and this book tells how it happened.
Roadside Geology of New Mexico
The Land of Enchantment, New Mexico is as varied in its scenery as its nickname suggests. With desert lowlands in the south and high, hoary peaks in the north, with rugged volcanic uplands and colorful plateaus, with high plains along its eastern border, and with a great rift valley that quite literally slashes the state in two, New Mexico presents many faces to its residents and visitors--faces that can largely be laid at the doorstep of the state's varied geology.
Gemstones of North America
Volume III of Sinkankas?s continuing research which updates the development of the older, well-established gem deposits. Includes maps of localities and full-color photos. Hard cover, 528 pgs.
Agates : Treasures of the Earth
The agate is one of the world's most strikingly beautiful semi-precious gems, and collectors worldwide are drawn to the stone's infinite variety of colorations and banding. This identification guide is comprehensive and easy-to-use. It is illustrated throughout with full-color photographs and includes a worldwide listing of where agates are found. Hard cover, 192 pgs.,
Roadside Geology of Indiana
Hundreds of millions of years ago, warm coral-rich seas deposited mud on the ocean floor, and in time it became limestone --the cornerstone of Indiana geology. Layered with sandstone and shale, the limestone preserves fossils, dissolves along fractures, traps natural gas, and is the source of famous building stones. Roadside Geology of Indiana explores the geologic features visible along the state's highways from Indiana Dunes National Lakeshore in the north to Wyandotte Caves in the south. As you travel across Indiana's time-worn topography, discover fossilized reefs, mastodon skeletons, geodes, ancient bedrock valleys, and the site of a mysterious meteorite impact. Authors Mark J. Camp and Graham T. Richardson divide Indiana into four geographically distinct regions: the arched limestones of the southeastern hills, the karst topography of the south, the coal-bearing rocks of the Wabash lowlands, and the glacially buried north. Numerous maps and cross sections reveal Indiana's geology for easy exploration.
Roadside Geology of Louisiana
After Hurrican Katrina, the fanlike pile of sand, mud, and silt that formed near a breached levee was unique in the urban environment of New Orleans. Over the 7,500-year history of the modern Mississippi River delta, however, it was just another splay deposit. Author Darwin Spearing explains the geologic forces behind the formation of the delta, shedding light on the human struggle to control the powerful river that breaches its own levees and switches its own deltas. With sections on wetland loss and land subsidence,
Roadside Geology of Louisiana is a must-read for understanding the vulnerability of the Mississippi River delta to floods and hurricanes.
First published in 1995,
Roadside Geology of Louisiana is back in print by popular demand, with several updated sections. The introduction presents an overview of Loiusiana's geological history, and 57 road guides discuss the landforms visible from a car window, including sand ridges, natural levees, oxbow lakes, and the Five Islands salt domes.
Roadside Geology of Texas
The geologic panorama of Texas is as wide as the state is big, sweeping from volcanic mesas and thrusting mountains in the west to the red canyons of the Panhandle, along tropical sand barriers of the Gulf Coast, and across central limestone plateaus to the hard granitic terrain of central Texas. Learn about the rocks as you come to them - what they are, when they formed, what they mean, and how they fit into the big picture of the geology of Texas.
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