Mineralogical composition, copper and d18O at DSDP Site 59-448

Alteration in a submarine remnant volcanic arc should leave an important record of (1) the mineralogy of sea water-volcanic arc rock interaction; (2) the chemistry of solid reaction products; (3) the isotopic characteristics of such reactions (Muehlenbachs and Clayton, 1972; Spooner, Beckinsale, et al , 1977; Spooner, Chapman, et al., 1977); (4) the metallogenesis within such a sequence (Mitchell and Bell, 1973); and (5) the geothermal gradient during the alteration. The volcaniclastic breccias, tuffs, and igneous units of Sites 448 (993 m) and 451 (930.5 m) on the Palau-Kyushu and West Mariana ridges, respectively, are particularly suited for such studies because the thick sequences have remained submarine throughout their history, seemingly unaffected by magmatic or hydrothermal events after cessation of volcanic activity. Also, shipboard observations indicated a change in alteration products with depth. At both sites the igneous units and volcaniclastic rocks were altered to brownish clays and zeolites near the top of the volcanic sequence; to bright blue green clays and zeolites at moderate depths; and to very dark, nearly opaque, forest green clays and zeolites at still greater depths. Native copper occurs both as disseminated pockets in the volcaniclastic breccias and vesicular basalts and as veins in the breccias; native copper is restricted to stratigraphic levels characterized by the absence of sulfides or oxides of copper and iron. Although some native copper is found in vesicles of basalts and may be orthomagmatic, most of it is clearly secondary. Near dikes and sills, higher sulfur fugacity conditions caused the precipitation of iron and copper sulfides with an absence of native copper (Garrels and Christ, 1965). The occurrence of native copper may be an initial stage of Cu metallogenesis that forms porphyry coppers in island arcs (Mitchell and Bell, 1973). This study will address primarily the possibility that hydrothermal sea water interaction with volcanic arc rocks has created the mineralogical and isotopic zonation in Leg 59 cores. Hydrothermal activity can be expected in a rapidly growing island arc and is probably the result of a high geothermal gradient prevalent during arc magmatic activity. The chemical character of the alteration is further discussed by Hajash (1981).

Sharḥ Īsāghūjī : manuscript, 1768

Missing one leaf or leaves at the beginning.

Takrîr-i İsagoci : manuscript, 1793

Introductory treatise on logic in form of commentary on Porphyry's "Isagoge" (d. 305).

Ḥusāmkātī fī al-manṭiq : manuscript, undated

Commentary on the Īsāghūjī [Isagoge], "Introduction to logic", by al-Abharī.

Dendrogeochemical Study of a Copper Deposit in Black Springs, Australia

The Bushranger Copper project is a known porphyry-style copper deposit located roughly 150 km west of Sydney in New South Wales, Australia. Monterey pines (Pinus radiata) growing over the mineralization were cored and their rings were counted. Segments of the core representing growth between 2003 and 2008 were selected, digested in nitric acid, and analyzed via ICP-MS. This time span was selected because there was the least variation in tree ring width among all samples during these years, indicating uniform growth. The relative concentrations of the pathfinder elements Al, Cu, Mo, Pb and Zn were highest in the south-western corner of the area. Based on the data this area is the most prospective area to conduct further exploration efforts.

Commentaria in Aristotelem graeca : Edita consilio et auctoritate Academiae litterarum ragiae borussicae ...

A supplement of both the edition of Aristotle's works by the Berlin Academy (1831-1870) and of the Commentaria, is the Supplementum Aristotelicum editum consilio et auctoritate Academiae litterarum regiæ Borussicae ... Berolini, 1885-1903.

De Porphyrii studiis Homericis capitum trias. Commentatio quam ...

Thesis (doctoral)--Göttingen.

[Iamblichou Chalkideōs tēs Koilēs Syrias Peri biou Pythagorikou logos] = Jamblichi Chalcidensis ex Coele-Syria De vita Pythagorica liber Graece et Latine : ex codice ms. à quamplurimis mendis, quibus editio Arceriana scatebat, purgatus, notisque perpetuis illustratus /

Includes indexes.

Iamblichus on the Mysteries of the Egyptians, Chaldeans, and Assyrians.

"The epistle of Porphyry to the Egyptian Anebo": p. [1]-16.

Traité de Porphyre, touchant l'abstinence de la chair des animaux : avec la vie de plotin.

Mode of access: Internet.

Syntipae philosophi persae fabulae LXII : graece et latine /

Signatures: *⁸ A-I⁸ K².

D. Francisci Toleti, Societatis Iesu, Commentaria vna cum quaestionibus in vniversam Aristotelis logicam : ornatius quàm ante hac, ac plus quàm mille in locis emendatiùs excusa, varijsqúe annotationibus, ad rem planè necessarijs insigniter illustrata /

Includes indexes.

The Organon,

Mode of access: Internet.

Porphyrii De philosophia ex oraculis haurienda : librorum reliquiae /

Includes bibliographical references and index.