Oligocene to Miocene stable isotope record and planktonic foraminifer biostratigraphy of the Sierra Leone Rise

We have integrated Oligocene to lower upper Miocene planktonic foraminifer biostratigraphy with benthic foraminifer (Cibicidoides spp.) stable isotope records for two sites drilled on opposite sides of the Sierra Leone Rise in the eastern equatorial Atlantic Ocean. Deep Sea Drilling Project Site 366 (2853 m present water depth; 2200-2800 m paleodepth) recovered an Oligocene to upper Miocene record with a minor unconformity in the "middle" Oligocene and a condensed middle Miocene section. Ocean Drilling Program Site 667 (3529 m present depth; 3000-3500 m paleodepth) recovered an apparently continuous "middle" Oligocene to lower middle Miocene record and a similar condensed middle Miocene section. The Oligocene to lower Miocene sections were deposited at similar sedimentation rates (~11-16 m/m.y.). Stable isotope stratigraphy proved to be useful in establishing intra- and interbasinal correlations. In addition to the well-known earliest Oligocene and middle Miocene S180 increases, a distinct d18O increase occurred near the Oligocene/Miocene boundary. Carbon isotope variations provide similar potential for improving correlations; for example, a d13C increase occurred near the Oligocene/Miocene boundary in concert with increased d18O values. There was little d13C difference between the western Atlantic and eastern Atlantic basins during the late Oligocene and most of the middle Miocene; in contrast, eastern basin d13C values were slightly lower than those in the western basins during the earliest Oligocene (about 35-33 Ma) and early Miocene (about 22-18 Ma).

Santa Teresa y Felipe II. Concepto cabal de justo y de piadoso que se forma del Rey Prudente, leyendo las obras de Sta. Teresa de Jesús

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Cuentos románticos,

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Un año en el hospital de S. Lazaro : novela.

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Parnaso de Mexico. Antologia general.

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Cuento de amor; fantasía cómica en un acto y en verso y prosa por Justo S. López de Gomara, música del eminente maestro d. Juan Goula ...

Without music.

Arturo Sierra /

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La Sierra.

"Organo de la Asociación Universitaria."

Cantos de la sierra.

Poems.

Sierra morena : serenata Andaluza for violin and piano /

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California spring wildflowers : from the base of the Sierra Nevada and Southern Mountains to the sea / Philip Alexander Munz

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Manganese deposits of the Sierra Nevada of California ...

Thesis (Ph.D.)--Univ. of California, May 1920.

Dos memorias sobre el influjo que ha tenido la extraordinaria producción de las minas de plomo de la Sierra de Gador en la decadencia general de la mayor parte de las de este metal en Europa...escritas en Alemania /

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Diálogo entre Don Justo Claro y Don Prudencio Bueno, sobre el estado en que se halla la nación /

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Progresos, estado de las minas de plomos y alcóholes de la Sierra de Gador : indícanse los medios de su fomento /

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