Now showing items 1-10 of 12
Automatic detection of seismic reflections
The purpose of this study is the automatic detection of reflections in seismograms used in oil exploration by examining the statistical moments in successive time windows. Two of the information-bearing features of a ...
LONG PERIOD LEAKING MODES
Microfossils of the Trinity River Delta
A study of the distribution of Poraminifera and other microscopic fossils in cores penetrating the modern Trinity Delta reveals three distinct foraminiferal assemblages. The assemblages encountered from the base of the ...
Petrology of the Seven Springs Formation, Davis Mountains, Texas
A petrological study was made of the Seven Springs Formation in the northeastern Davis Mountains, West Texas. This formation consists of a basalt and three ignimbrites, interbedded with air-fall tuffs. The basalt is very ...
A geochemical investigation of the Pre-Cambian Knife Lake Series, northeastern Minnesota
A geochemical study was made of the Precambrian eugeosynclinal graywackes and slates of the Knife Lake Series in northeastern Minnesota. Unlike some other graywacke sequences, these sedimentary rocks show no systematic ...
Study of the action of filters on a given signal
A method has been developed by which a deconvolution filter is designed and applied to a "seismogram" whose initial signal is unknown. Considering a known signal composed of spikes of random amplitude and distributed at ...
Late Cenozoic basalts from the Basin-Range province, western United States
Petrographic and chemical analyses demonstrate that late Cenozoic mafic lavas from the Basin-Range province, western United States, are predominantly alkali-olivine basalts. Associated with these lavas are lesser volumes ...