(Table 4) Chemistry of iron-rich basalts from ODP Hole 106-648B

Analysis numbers 344-370, SAMF 12.5-12.7; 442-369, SAMF 12.7-12.9; 422-77, SAMF 12.9-13.1; 95-156, SAMF 13.1-13.3; 272-82, SAMF 13.3-13.5; 285-33, SAMF 13.5-13.7. Analyses are listed in depth order within each SAMF division.

(Table 1) Calcium carbonate at DSDP Hole 81-552A

DSDP Hole 552A, cored with the HPC on Hatton Drift, represents an almost complete and undisturbed sediment section spanning the late Neogene and Quaternary. Lithologic, faunal, isotopic, and paleomagnetic analyses indicate that the section represents the most complete deep sea record of climatic evolution hitherto recovered at high latitudes in the northern hemisphere. A glacial record of remarkable resolution for the late Pliocene and Pleistocene is provided by oxygen and carbon isotope ratios in benthic foraminifers. In the upper part of the section, the whole of the standard oxygen isotope record of the past million years is well preserved. The onset of ice-rafting and glacial-interglacial alternations occurs at about 2.4 m.y. ago.

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.

Chemistry of very young basalts from ODP Hole 106-648B

Basalts in Hole 648B, located in the rift valley of the Mid-Atlantic Ridge at 23°N in crust estimated to be less than 100,000 years old, are mainly fresh, but small amounts of secondary phases are found on fracture surfaces and in alteration halos within the rocks. The halos are defined by dark bands 1-4 mm thick that have developed parallel to fracture surfaces or pillow margins and which in some cases have migrated some centimeters into the rock. The dark bands are the principal locus of secondary phases. The secondary phases are olive-green and yellow protoceladonites, of composition and structure intermediate between celadonite and iron-rich saponite, red (Mn-poor) to opaque (Mn-rich) iron oxyhydroxides, mixtures of protoceladonite and iron oxyhydroxide, and rare manganese oxides. These phases occur mainly as linings or fillings of open spaces in the basalt within the dark bands. Sulfides and intersertal glass are the only primary phases that can be seen to have been altered. Where dark bands have migrated into the rock, the rock behind the advancing band is almost devoid of secondary phases, implying redissolution. The potassium and magnesium in the secondary phases could have been supplied from ambient seawater. The aluminum in the protoceladonites must have been derived from local reaction of intergranular glass. The source of iron and silica could have been intergranular glass or low temperature mineralizing solutions of the type responsible for the formation of deposits of manganese oxides and iron oxyhydroxides and silicates on the seafloor.

Family of James Burrill Angell

Standing (Adults) L-R: Marion Waterhouse Angell (Mrs. J.R.); James Rowland Angell; Andrew C. McLaughlin; Fanny C. Cooley. Angell (Mrs. A.C.); Alexis Caswell Angell; Sarah Caswell Angell (daughter of A.C), Lois Angell McLaughlin

Middle Row: James Waterhouse Angell (son of J.R.), Marion Angell (McAlpin) (daughter of James R.) James Burrill Angell, Isabel McLaughlin

Front Row: Constance McLaughlin (Green); Robert Cooley Angell (son of A.C.); Esther Lois McLaughlin (Donahue) David Blair McLaughlin; Rowland Hazard McLaughlin; James Burrill Angell II (son of A.C.): James Angell McLaughlin

Lois T. McLaughlin

Lois Thompson Angell McLaughlin, daughter of James B. and Sarah C. Angell, wife of Andrew C. McLaughlin. On verso: Lois Angell (later Mrs. McLaughlin). J.E. Watson Grand Central Gallery, 4143 Monroe Ave., Detroit, Mich.

Guidelines for assessing the environmental impact of public mass transportation projects: executive summary.

Transportation Department, Office of Environment and Safety, Washington, D.C.

Guidelines for assessing the environmental impact of public mass transportation projects. Notebook 1: purpose and procedures. Final report.

Transportation Department, Office of Environment and Safety, Washington, D.C.

Guidelines for assessing the environmental impact of public mass transportation projects. Notebook 2: social impacts. Final report.

Transportation Department, Office of Environment and Safety, Washington, D.C.