 | | Journal (volume) | | CALIFORNIA DEPARTMENT OF NATURAL RESOURCES DIVISION OF MINES FERRY BUILDING, SAN FRANCISCO WALTER Vol. 39 W...Mineralogist JANUARY 1943 No. CALIFORNIA JOURNAL OF MINES AND GEOLOGY QUARTERLY CHAPTER OF STATE MINERALOGIST'S...MINERALOGIST'S REPORT XXXIX STATE DIVISION OF MINES FERRY BUILDING, SAN FRANCISCO CALIFORNIA 21200 LIBRARY...UNIVERSITY OF CALIFORNIA DAVIS 1 DIVISION OF MINES EXECUTIVE AND TECHNICAL STAFF WALTER W. BRADLEY...of the Division of Mines, by Walter W. Bradley SAN FRANCISCO FIELD DISTRICT Mines and mineral resources |  | | Journal (article/letter/editorial) | | the profile. The mineralogical composition of the ash is mainly quartz @O-90%), with feldspar (5-15%) and...Biogenic Si represents another important fraction of ash and is abundant (30-‘70%) at discrete depths. The...in Fe/SC are found in both cores above peaks in ash content and density. These appear to correspond with...(dust) to Belorussian peat bogs with the rates of ash accumulation in the peats and estimated that 90%...dissolution of ferromagnesian minerals in volcanic ash buried in some acidic New Zealand peat bogs. Biotite |  | Wajima, T., Ishimoto, H., Kuzawa, K., Ito, K., Tamada, O., Gunter, M. E., Rakovan, J. F. (2007) Material conversion from paper-sludge ash in NaOH, KOH, and LiOH solutions. American Mineralogist, 92 (7) 1105-1111 doi:10.2138/am.2007.2251 | Journal (article/letter/editorial) | | 1105–1111, 2007 Material conversion from paper-sludge ash in NaOH, KOH, and LiOH solutions TAKAAKI WAJIMA,1...synthesized from paper-sludge ash in different alkali solutions. The ash used in this study has a high-Ca...presence of calcite that is used as a paper filler. The major minerals present in the ash are gehlenite...(1, 2, 3, and 4 M) were reacted with paper-sludge ash at 90 °C for 24 h. Powder X-ray diffraction showed...products of mineral synthesis from paper-sludge ash by reaction in alkaline solutions strongly depend |  | | Report (issue) | | of Geosciences, University ofArizona, Tucson, Arizona 85721 ABSTRACT The years since Snowbird I have...Histogram of the periods at which the highest spectral peak occurs, for 1 ,000 perturbed time series of 21 impact...thermal structure of p. 833-836. Richards, M. A., Duncan, R. A., and Courtillot, V. E., 1 989, Flood basalts...Galaxy and the Solar System: Tucson, University of Arizona Press, p. 409-416. Urey, H. C., 1973, Cometary...relative to a persistent source of magma (Richards and Duncan, 1 989); (2) elevations of these volcanic islands |  | Piotrowski, Alexander M., Goldstein, Steven L., Hemming, Sidney, R., Fairbanks, Richard G., Zylberberg, David R. (2008) Oscillating glacial northern and southern deep water formation from combined neodymium and carbon isotopes. Earth and Planetary Science Letters, 272 (1) 394-405 doi:10.1016/j.epsl.2008.05.011 | Journal (article/letter/editorial) | | Columbia University, 61 Rt. 9W, Palisades, NY 10964, USA A R T I C L E I N F O Article history: Received...isotope record is apparent. Occurrence of volcanic ash in TNO57-21 has been interpreted to record increased...volcanic ash from the Scotia island arc to the Cape Basin (Kanfoush et al., 2000, 2002). Ash abundance...in ash abundance (e.g. at 25 and 30 ka) do not correspond to unusually high εNd, while ash peaks also...effects from remobilization of Nd from the volcanic ash at this site, for if substantial exchange occurred |  | | Book | | . . . . . . Anthropogenic acti vit y trace d by ash content in pea t deposits . . . 7. Palaeoecologica...in the central Asian Highlands, in the south-west USA , and in Peru. It is possible that such local ,nontane...lakc-lc,cls at 18,000 B.P. in the so uth -wes t USA and parts or northern Africa. Lake producti, ity...th en spread in diffe rent directions ove r tho usa nds of kil ometres from di ffe rent glacial re fugia...as reflecting: (1) Clearance of elm-oak- lime- ash forest by nomadic Neolithic people using flint axes |
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