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40Ar/39Ar geochronology of the Eocene Green River Formation, Wyoming
The deposits of Eocene Lake Gosiute that constitute the Green River Formation of Wyoming contain numerous tuff beds that represent isochronous, correlatable stratigraphic markers. Tuff beds selectedExpand
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Cold Modalities With Different Thermodynamic Properties Produce Different Surface and Intramuscular Temperatures.
OBJECTIVE: To compare surface cooling and deep cooling produced by 3 common forms of cryotherapy. DESIGN AND SETTING: We used a 3 x 4 x 4 factorial with repeated measures on measurement depth andExpand
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Eocene clocks agree: Coeval 40Ar/39Ar, U-Pb, and astronomical ages from the Green River Formation
U-Pb ages of zircon from the Firehole and Analcite ash beds in the Eocene Green River Formation (Wyoming, United States) are indistinguishable from 40 Ar/ 39 Ar ages of sanidine after adjusting theExpand
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GEOCHRONOLOGY AND MAMMALIAN BIOSTRATIGRAPHY OF MIDDLE AND UPPER PALEOCENE CONTINENTAL STRATA, BIGHORN BASIN, WYOMING
The Bighorn Basin of northwestern Wyoming preserves one of the most complete records of middle Paleocene to lower Eocene continental biota. The geochronology of this important interval depends partlyExpand
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The Postclassic Mesoamerican World
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Proton environments and hydrogen-bonding in hydrous silicate glasses from proton NMR
The dissolution of water in magmas has profound effects on their physical and chemical properties, and an understanding of this process continues to be of major importance in igneous petrology andExpand
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Modification of stream ecosystem structure and function by beaver (Castor canadensis) in the Adirondack Mountains, New York
Stream ecosystem structure and function were studied in an acidic second-order Adirondack Mountain stream system with current beaver activity. Acid-neutralizing capacity, pH, dissolved organicExpand
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Aztec city-state capitals
The Aztecs ruled much of Mexico from the thirteenth century until the Spanish conquest in 1521. Outside of the imperial capital of Tenochtitlan, various urban centers ruled the numerous city-statesExpand
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DESIGN OF SMALL-SAMPLE HOME-INTERVIEW TRAVEL SURVEYS
Procedures for use in designing small-sample home-interview travel surveys are described. The following steps are addressed: (a) Decide on the purpose of the survey, (b) decide which variables shouldExpand
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The Development of Prehispanic Cotton-Spinning Technology in Western Morelos, Mexico
AbstractCotton textiles played important economic, social, and political roles in the Prehispanic civilizations of Mesoamerica, yet archaeologists have made little progress in the analysis of textileExpand
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