Sulfur geochemistry at ODP Site 112-680 and 112-686

We have measured the concentrations of (1) pore-water sulfide and (2) solid-phase pyrite, iron monosulfide (=acid volatile sulfide), elemental sulfur, and extractable and nonextractable organic ("kerogen") sulfur in sediments from Ocean Drilling Program (ODP) Sites 680 and 686. Pore-water sulfide defines classic "bell-shaped" profiles. Maximum concentrations of 6 to 12 mM occur where sulfate is exhausted, or is most depleted, at depths between 15 and 50 mbsf. Sulfide resulting from bacterial sulfate reduction reacts in three ways: (1) some is reoxidized to elemental sulfur in surface sediments; (2) some reacts with detrital iron minerals to form iron monosulfide and pyrite, primarily in the top meter or two of the sediment; and (3) some reacts with, and is incorporated into, kerogen. Incorporation of reduced sulfur into kerogen occurs over the top 15 m of the sediment at both Sites 680 and 686, after the main phase of pyrite formation. Up to 45% of the total sedimentary sulfur is organically bound, and concentrations of 12 wt% sulfur are reached in the kerogen. These values are like those measured in lithologically similar, but more deeply buried, sediments from the Monterey Formation.

Characteristics of income distribution in eastern Paraguay /

"Contract no. 53-319R-9-90."

Quant j'ai ouy le tabourin = Whene'er the tambourine I hear /

At head of title: Trois chansons.

Bowmansville : Youth hostels and trails / Compiled by workers of the Lancaster County unit of the Writers' Program of the Work Projects Administration in the State of Pennsylvania. Statewide sponsor, Pennsylvania Department of Public Instruction.

Co-sponsored by the Bowmansville Youth Hostel Committee, Charles D. Spotts, Chairman.

Travaux de physiologie expérimentale,

Mode of access: Internet.

The magic surface, a discussion on the remarkable sliding quality of ice.

Bibliography: p. 71-72.

The student's church history /

Contents: v. 1. Early Period, from the Ascencion of Our Lord to the Conversion of Constantine -- v. 2. Early Middle Period, from the Edict of Milan to the establishments of the new Western Empire under the Carlovingians, the temporal power of the Popes, and the coming into being of the States of the Church (1931) -- v. 3. To the s-called Reformation -- v. 4. Reformation to the triumph of the Papcy in the restoration of the temporal power in 1929 under Pope Pius XI.

A pictorial geography of the world : comprising a system of universal geography, popular and scientific, including a physical, political, and statistical account of the earth and its various divisions, with numerous sketches from recent travels, and illustrated by more than twelve hundred engravings of manners, costumes, curiosities, cities, edifices, ruins, beasts, birds, fishes, reptiles, trees, plants, fruits, etc., with a copious index, answering the purpose of a gazetteer /

Added title page engraved

Addition a la suite du recueil de toutes les piéces qui ont été publiées au sujet du lithotome caché, pour servir de réfutation à un ecrit, qui a pour titre Recueil des piéces, concernant l'opération de la taille, qui contient la description de plusieurs lithotomes ... par Claude-Nicolas Le Cat, a Rouen, 1752. in 8º.

Mode of access: Internet.

Remarques de M. Winslow sur le mémoire de M. Ferrein touchant le mouvement de la machoire inferieure : : imprimé dans le volume de l'Acad��mie Royale des Sciences de 1744 avec le rapport des commissaires nommés par l'Academie en 1752 pour la Discussion sur la dispunte & c.

Las 23 p. contienen: "Extrait des registres de l'Academie Royale des Sciences du 23 Août 1752, discussion de la dispute de M. Winslow & de M. Ferrein"