Utah's landscape is among the most spectacular in the world. It is a region of prominent peaks, sweeping valleys, dramatic canyons, and plateaus rimmed by sheer cliffs. Unique among western states, Utah's landscape includes the Colorado Plateau, Basin and Range, and Rocky Mountains geologic provinces. Exposed rocks tell the geologic story of the region's basement structures, overlying surface features, and rock sequences that have contributed to sculpting the appearance of today's landscape. Rocks and formations record the evolution of the western part of the North American continent, and give clues to the nature of ancient crustal basement and Earth's deeper layers. Climate change has shaped the present landscape through the erosional power of ancient glaciers and the presence of today's large lakes and basins. Geology of Utah introduces the state's deep earth, plate tectonics, and the development of its ancient mountains. It describes the geology of the three main geological provinces, ancient elevations, cliffs, valleys, and the history of the region's climate. This book will enrich the experience of enthusiastic amateur geologists who want to understand and explore the development of Utah's highlands and the history of this dynamic landscape.
Northern Utah's Wasatch Mountains are popular destinations for outdoor enthusiasts in every season. These mountains rise spectacularly from the relatively flat valley floor to thirteen peaks over 11,000 feet in elevation. An additional nineteen peaks rise more than 10,000 feet in elevation. Although many hiking guides exist for the Wasatch Mountains, there has been no guide book that focuses on the geologic features visible from the trails--until now. Written by a recognized authority on the geology of the Wasatch Mountains, this guide is meant to enrich the experience of outdoor enthusiasts who want to understand the geological history and development of the Wasatch range. The first section of the book introduces the major geological time periods--the record of mountain building events from oldest to youngest, the effects of glaciation, and the development of the present topography. It then follows with a descriptive trail guide for each major trail system, including Mill Creek and Neffs Canyons, Mount Olympus, Little and Big Cottonwood Canyons, and Bells Canyon. Trail length, elevation gain, relative difficulty, and major geological features are outlined for each trail. Now you can hike these trails with the answers to all your geologic questions right at your fingertips.
This book provides detailed treatment of topics in traditional logic: the theory of terms; the theory of definition; the informal fallacies; and division and classification. Aristotelian Logic teaches techniques for solving semantic problems — problems caused by confusion over terminology. It teaches the theory of definition — the different kinds of definition and the criteria by which each is judged. It also teaches that definitions are like tools in that some are better suited for a particular task than others. Several chapters are devoted to informal fallacies. A new classification is given for them, and the concept of proof is presented, without which some of the traditional informal fallacies cannot be explained adequately. Another chapter is devoted to division and classification, which occurs in all of the sciences. Other topics covered include the square of opposition, immediate inferences, and the syllogistic and chain arguments.
The people of Aramanth are finally free of the Morah, the evil power that controlled them for generations. But a ruthless attack by soldiers from a distant land destroys the city, and its people are driven off as slaves. During the invasion, Kestrel and Bowman are separated for the first time in their lives. Bowman becomes a slave of the Mastery. Kestrel escapes, then sets off to avenge the enslavement of her family. As the twins embark on their parallel adventures, their mother's prophetic dreams reveal their true identity and their dangerous fate. Bowman's mind power and Kestrel's fierce spirit are soon joined once again to fight for the freedom of their people.
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