Textural Variations of Calcareous Coarse Fractions in the Panama Basin (Eastern Equatorial Pacific Ocean)

1977 ◽  
pp. 673-692 ◽  
Author(s):  
Jörn Thiede
Keyword(s):  
Pacific Ocean ◽  
Equatorial Pacific ◽  
Equatorial Pacific Ocean ◽  
Eastern Equatorial Pacific ◽  
Eastern Equatorial Pacific Ocean

scholarly journals M2tidal currents in the eastern equatorial Pacific Ocean

1987 ◽  
Vol 92 (C4) ◽  
pp. 3821 ◽  
Author(s):  
R. H. Weisberg ◽  
D. Halpern ◽  
T. Y. Tang ◽  
S. M. Hwang
Keyword(s):  
Pacific Ocean ◽  
Equatorial Pacific ◽  
Equatorial Pacific Ocean ◽  
Eastern Equatorial Pacific ◽  
Eastern Equatorial Pacific Ocean

Middle Miocene to Pleistocene Planktonic Foraminiferal Biostratigraphy in the Eastern Equatorial Pacific Ocean

2013 ◽  
Vol 17 (1) ◽  
pp. 91-109 ◽  
Author(s):  
Hiroki Hayashi ◽  
Kyoko Idemitsu ◽  
Bridget S. Wade ◽  
Yuki Idehara ◽  
Katsunori Kimoto ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Middle Miocene ◽  
Equatorial Pacific ◽  
Equatorial Pacific Ocean ◽  
Eastern Equatorial Pacific ◽  
Eastern Equatorial Pacific Ocean ◽  
Foraminiferal Biostratigraphy

Tephrochronology of the Western Gulf of Mexico for the Last 185,000 Years

1985 ◽  
Vol 23 (3) ◽  
pp. 403-416 ◽  
Author(s):  
Karen Rabek ◽  
Michael T. Ledbetter ◽  
Douglas F. Williams
Keyword(s):  
Pacific Ocean ◽  
Gulf Of Mexico ◽  
Accurate Method ◽  
Equatorial Pacific ◽  
Equatorial Pacific Ocean ◽  
Eastern Equatorial Pacific ◽  
Oxygen Isotope Stratigraphy ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Eastern Equatorial Pacific Ocean

Tephra in 31 piston cores from the western Gulf of Mexico and 7 piston cores from the equatorial Pacific were analyzed by electron microprobe. Six ash layers in the western Gulf of Mexico were easily distinguished by TiO2, FeO, and CaO contents and correlated by geochemistry in order to determine the distribution pattern for each ash layer. Correlation by geochemistry is an easier, more accurate method than biostratigraphic correlation; some of the tephras were miscorrelated by biostratigraphy. The six tephras were dated by geochemical identification in a piston core with oxygen-isotope stratigraphy and the ages are Y5 (30,000 yr B.P.), Y6 (65,000 yr B.P.), Y8 (84,000 yr B.P.), X2 (110,000 yr B.P.), W1 (136,000 yr B.P.), and W2 (185,000 yr B.P.). Data from this study corroborated correlations of the Y8 tephra in the western Gulf of Mexico with the D layer in the eastern equatorial Pacific Ocean. None of the other five layers in the Gulf of Mexico, however, were found in the Pacific Ocean. The limited distribution of the Y5, Y6, X2, and W2 ash layers close to Mexico indicates possible sources in Mexico. Tephra from the late Pleistocene La Primavera pumice in Mexico, however, does not correlate with the marine tephra.

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