منابع مشابه
Elevated weathering rates in the Rocky Mountains during the Early Eocene Climatic Optimum
M. ELLIOT SMITH1*, ALAN R. CARROLL1 AND ERICH R. MUELLER2 Department of Geology and Geophysics, University of Wisconsin-Madison, 1215 W Dayton St., Madison WI 53706, USA Department of Geography, University of Colorado, Boulder, Colorado 80309, USA *Current address: Department of Geology, Sonoma State University, 1801 E Cotati Ave, Rohnert Park, California 94928, USA †e-mail: michael.smith@sonom...
متن کاملFault dating in the Canadian Rocky Mountains: Evidence for late Cretaceous and early Eocene orogenic pulses
Fault rocks from the classic Rocky Mountain foreland fold-and-thrust belt in southwestern Canada were dated by Ar analysis of clay grain-size fractions. Using X-ray diffraction quantification of the detrital and authigenic component of each fraction, these determinations give ages for individual faults in the area (illite age analysis). The resulting ages cluster around 72 and 52 Ma (here calle...
متن کاملLee-side Frontogenesis in the Rocky Mountains
The development and motion of fronts associated with lee-side troughs on large mountain barriers has been investigated. These fronts differ from ordinary cold fronts in their horizontal temperature field, which is characterized by a sinusoidal thermal ridge. The thermal ridge intensifies, while remaining stationary with respect to the mountains, and moves eastward upon the approach of a Pacific...
متن کاملGeomorphic and Tectonic Implications of the Post-Laramide, Late Eocene Erosion Surface in the Southern Rocky Mountains
A late Eocene erosion sudace of low relief, which extended throughout south-central Colorado, provides a post-Laramide, pre-Oligocene, regional structural datum. The age and geomorphic character of the sudace are documented for an area of more than 10,400 km2 in the southern Front Range, Rampart Range, South Park, Thirtynine Mile volcanic field, southern Mosquito Range, upper Arkansas River val...
متن کاملAlbedo induced radiative forcing from MPB outbreaks in Rocky Mountains
Introduction Conclusions References
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the United States National Museum
سال: 1920
ISSN: 0096-3801
DOI: 10.5479/si.00963801.57-2313.233