(Tables 2, 3) Element ratios of planktonic foraminifera from western Pacific surface sediments

Accurately quantifying deep-sea calcite dissolution is crucial for understanding the role of the marine carbonate system in regulating atmospheric pCO2 over millennia. We compare a foraminifer-fragmentation-based calcite dissolution proxy (Globorotalia menardii fragmentation index (MFI)) to Mg/Ca, Sr/Ca, and Mg/Sr in several species of deep dwelling planktonic foraminifers. We conducted microfossil and geochemical analyses on the same core top samples taken at different depths on the Ontong Java Plateau to maximize the dissolution signal and minimize the temperature overprint on our data. We also compare elemental ratios from planktonic foraminifer tests to modern bottom water [CO3]2- undersaturation and model-derived estimates of percent calcite dissolved in deep-sea sediments. We find clear linear decreases in Mg/Ca or Mg/Sr in G. menardii and Pulleniatina obliquiloculata with increasing (1) bottom water [CO3]2- undersaturation, (2) percent calcite dissolved in sediments calculated with biogeochemical modeling, (3) MFI, and (4) percent calcite dissolved derived from MFI. These findings lend further support to MFI as a calcite dissolution proxy for deep-sea sediments. In contrast, we find no significant correlation between Sr/Ca and independent dissolution indicators. Our results suggest that Mg/Ca and Mg/Sr from deep dwelling foraminifers could potentially be used as calcite dissolution proxies in combination with independent water temperature estimates. Likewise, establishing the relationship between MFI and dissolution-induced changes in the Mg/Ca of surface-dwelling foraminifers could provide a tool to correct Mg/Ca-derived sea surface temperature reconstructions for calcite dissolution.

(Table T1) Mineralogy and geochemistry of ODP Hole 192-1183A and Hole 192-1186A sediments, Ontong Java Plateau

Boron, Ca, Na, and Gd concentrations and H intensity in sediments obtained during Ocean Drilling Program Leg 192 were determined by prompt gamma neutron activation analysis. The results show strong positive correlation between B content and H intensity in carbonate samples; chalk samples have higher B contents than limestone samples. Average B content is 9.1 ppm for the chalk and 5.2 ppm for the limestone. When chert blocks or clay minerals are present in the carbonate samples, B content increases (up to 91 ppm).

Transportation needs and programs summary. Fifth edition.

Transportation Department, Washington, D.C.

Quintett, E dur, für Klavier, 2 Violinen, Bratsche und Violoncell, Op. 2 /

Publisher's no.: Universal-Edition, No. 3694.

Self-employment for the poor [microform] : the potential of micro-enterprise credit programs : hearing before the Select Committee on Hunger, House of Representatives, One Hundredth Congress, second session, hearing held in Washington, DC, April 20, 1988.

"Serial no. 100-25."

Drei Concert-Ouverturen ... No. 2, Die Fingals-Höhle ...

First edition?

II. Streichquartett für 2 Violinen, Viola und Violoncell. Op. 17.

Title from Violin I part.

Sérénade, 2 violons & alto. Op. 12.

Mode of access: Internet.

Trio no. 2, C minor for piano, violin and cello, op. 66. [music] /

Mode of access: Internet.