Planktonic foraminifera in sediments of the Ibero-Moroccan Continental Margin

Recent clays cover the East Atlantic continental slopes. They are gray and poor in sand off Portugal (Cape Sines), but reddish brown to reddish gray and richer in sand off Morocco (Cape Mazagan). The majority of the 19 sediment cores, which were taken mainly on two profiles (Fig. 3), can be correlated by means of planktonic foraminifera (Figs. 27, 28). The following parameters seem to be well suited for this purpose: qualitative and quantitative distribution of the planktonic foraminiferal species and faunas, coiling ratios of three Globorotalia-species: G. crassaformis, G. hirsuta and G. truncatulinoides. Sediments from about 2000 m water depth show highest sedimentation rates off Portugal (> 20 cm/1000 yrs.), but off Morocco the lowest sedimentation rates (about 3 cm/1000 yrs.). The sediments are dated with planktonic foraminifera and 31 radiocarbon analyses and the stratigraphic interpretation is supported by the lithostratigraphy. Holocene faunas are distinguished from the Pleistocene ones by differences in species composition, lower dominances and higher diversities. The Holocene sediments show smaller differences of the foraminiferal numbers than the Pleistocene ones. During Holocene and Pleistocene the temperatures of the surface water masses (indicated by the planktonic foraminiferal faunas) show similar values nearshore and offshore off Morocco. Likewise, there is no apparent temperature gradient in the Pleistocene off Portugal; whereas here values increase offshore during the Holocene. The proportion of species indicating warmer water masses is generally higher off Morocco. The plankton/benthos ratio increases with water depth and reaches maximum values already at about 1000 m. The production rate for planktonic foraminifera is higher in the continental slope regions than in the open ocean, but their shells show typical solution phenomena already in water depths of less than 1000 m. A higher solutional rate was found in sediments from the Tagus Abyssal Plain, while sediments from Horse Shoe and Seine Abyssal Plain seem to be better preserved. In the Tagus Abyssal Plain solution is less important during late Pleistocene than during Holocene.

U-M Softball Team, 1998

Back Row: Melissa Taylor, Christine Garza, Courtney Murdock, Melissa Gentile, Rebecca Tune, Marie Barda, Kim Bugel

Middle Row: Stacey Judd, Karmen Lappo, Traci Conrad, Tammy Mika, Cathy Davie, Pam Kosanke, Jamie Gillies

Front Row: Sara Griffin, Jennifer McKittrick (captain), Lisa Kelley, Kellyn Tate (captain) Blanc LeBron (manager)

Grammaire des arts du dessin : architecture, sculpture, peinture /

Mode of access: Internet.

Beitrag zur Kenntnis des Brucits und Metabrucits.

Mitteilung aus d. Inst. f. Mineral. u. Petrogr. d. Univ. Leipzig. N.F. Nr 59.

Politiques : Fleuri, Saint-Simon, Boulainvilliers et Duguet /

"Extrait des mémories de l'Academie Nationale des Sciences, Arts et Belles-Lettres de Caen."

Histoire des peintres de toutes les écoles /

Issued in 631 parts, 1849-76. cf. Vicaire, Manuel de l'amateur de livres du XXIe siècle.

Thin film polycrystalline silicon solar cells : technical progress quarterly report no. 3 for March 25 - June 24, 1980 /

"Work Performed Under Contract No. AC02-77CH00178."

Thin film polycrystalline silicon solar cells : first technical progress report for April 15 - July 15, 1980.

"Work Performed Under Contract No. AC02-77CH00178."

Thin film polycrystalline silicon solar cells : second technical progress report for July 15 - October 15, 1980.

"Work Performed Under Contract No. AC02-77CH00178."

La chanson du Charbonnier /

For voice and piano.

Histoire de la révolution française,

Imprint varies slightly.

Les Republicains aux prises aves les royalistes dans un bourg de Provence, Pertuis : 1774-1799 /

Paged continuously.

Observations sur les ouvrages de MM. de l'Académie de peinture et de sculpture : exposés au Sallon du Louvre, en l'année 1753, et sur quelques ecrits qui ont rapport à la peinture.

Final page blank.

Le petit meunier de Chateaulin /

Also published in the composer's Album 1847.

Guide de Florence : rédigé sur un nouveau plan /

Mode of access: Internet.