Now showing items 41-50 of 307
A simulation model of river ice cover thermodynamics
(Elsevier, 1985-04)
A model of ice cover thermodynamics was used to simulate ice growth and decay along the international section of the St. Lawrence River for winter 1980-1981. This winter was chosen because of the exceptionally cold weather ...
The effect of Al 3+ , Fe 3+ , and Ti 4+ on the configurational heat capacities of sodium silicate liquids
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1998-12)
The heat capacities of 29 glasses and supercooled liquids in the Na 2 O-SiO 2 , Na 2 O-Al 2 O 3 -SiO 2 , Na 2 O-(FeO)-Fe 2 O 3 -SiO 2 , and Na 2 O-TiO 2 -SiO 2 systems were measured in air from 328 to 998 K with a differential ...
Concordant paleomagnetic directions from the Tehuantepec Isthmus: Constraints on the Neogene evolution of the North American-Caribbean plate boundary
(Elsevier, 1994-09-15)
We report paleomagnetic data for Miocene igneous rocks of the southeastern Tehuantepec Isthmus region, Mexico. Thermal and alternating field demagnetization reveal predominantly normal polarity magnetization, interpreted ...
Effects of annealing on deformation textures in galena
(Springer-Verlag, 1977-01)
Experimental annealing of galena samples with known deformation histories shows that this mineral has the necessary properties to be a valuable source of information about low-grade deformational environments. Annealed ...
Mantle reflectivity structure beneath oceanic hotspots
(Blackwell Publishing Ltd, 2009-09)
This study applies high-resolution Radon transform to a large set of SS precursors and explores the mantle reflectivity structure beneath 17 potentially ‘deep-rooted’ hotspots. The combined reduced time (Τ) and ray parameter ...
A short note on early Cambrian palaeomagnetism from Normandy, France
(Blackwell Publishing Ltd, 1982-01)
A gravity model for the lithosphere in western Kenya and northeastern Tanzania
(Elsevier, 1992-10-15)
We present a new gravity model for the lithosphere beneath the Kenya Rift Valley, the Mozambique Belt, and the Tanzania Craton in western Kenya and northeastern Tanzania. The Kenya Rift lies within the eastern branch of ...
Sedimentary biomarker and isotopic indicators of the paleoclimatic history of the Walker Lake basin, western Nevada
(Elsevier, 1988)
Walker Lake, a terminal saline lake in western Nevada, has experienced major fluctuations in its water level due to changes in the regional climate during Quaternary times. As part of a paleo-climatological study of western ...
Climatic factors on the Archean earth
(Elsevier, 1982-11)
There is no strong evidence for extreme climates during the Archean. Galciogenics rokcs are rare, while evaporites are about as widespread as in later geological periods. Sedimentary rocks suggest processes of erosion and ...
Geochemistry of rare earth elements in pacific hydrothermal sediments
(Elsevier, 1988-10)
The concentrations and mass accumulation rates of rare earth elements (REE) in hydrothermal sediments from two Pacific sites support earlier predictions that hydrothermal REE inputs are significant to the overall marine ...