Geochemistry and isotopic ratios of basalts from ODP Leg 163 sites

Voluminous, subaerial magmatism resulted in the formation of extensive seaward-dipping reflector sequences (SDRS) along the Paleogene Southeast Greenland rifted margin. Drilling during Leg 163 recovered basalts from the SDRS at 66ºN (Site 988) and 63ºN (Sites 989 and 990). The basalt from Site 988 is light rare-earth-element (REE) enriched (La(n)/Yb(n) = 3.4), with epsilon-Nd(t=60) = 5.3, 87Sr/86Sr = 0.7034, and 206Pb/204Pb = 17.98. It is similar to tholeiites recovered from the Irminger Basin during Leg 49 and to light-REE-enriched tholeiites from Iceland. Drilling at Site 989, the innermost of the sites on the 63ºN transect, was proposed to extend recovery of the earliest part of the SDRS initiated during Leg 152. These basalts are, however, younger than those from Site 917 and are compositionally similar to basalts from the more seaward Sites 990 and 915. Many of the basalts from Sites 989 and 990 show evidence of contamination by continental crust (e.g., epsilon-Nd(t=60) extends down to -3.7, 206Pb/204Pb extends down to 15.1). We suggest that the contaminant is a mixture of Archean granulite and amphibolite and that the most contaminated basalts have assimilated ~5% of crust. Uncontaminated basalts are isotopically similar to basalts from Site 918, on the main body of the SDRS, and are light-REE depleted. Consistent with previous models of the development of this margin, we show that at the time of formation of the basalts from Sites 989 and 990 (1) melting was at relatively shallow levels in a fully-fledged rift zone; (2) fragments of continental crust were present in the lithosphere above the zones of melt generation; and (3) the sublithospheric mantle was dominated by a depleted Icelandic plume component.

(Table 1) Occurrences of Epimeria georgiana species complex (Amphipoda) in the Weddel and Scotia Sea

DNA barcoding revealed four well-supported clades among amphipod specimens that keyed out to Epimeria georgiana Schellenberg, 1931, three clades with specimens from the southern Scotia Arc and one clade with specimens from the Weddell Sea. Detailed morphological investigations of sequenced specimens were conducted, through light and scanning electron microscopy. High magnification (500-2,000 fold) revealed features such as comb-scales on the first antenna and trich bearing pits on the fourth coxal plate to be similar for all specimens in the four clades. Consistent microstructure character differences in the Weddell Sea specimens combined with high genetic distances (COI divergence>20%) allowed the description of Epimeria angelikae, a species new to science. Specimens of E. georgiana in the other three COI clades from the Scotia Arc were morphologically indistinguishable. Representative specimens of clade A are also illustrated in detail. Our results on the high genetic divergences in epimeriid amphipods support the theory of the southern Scotia Arc being a centre of Antarctic diversification.

Survey of packaging requirements for radiation pasteurized foods /

"Prepared for the Division of Isotopes Development, United States Atomic Energy Commission."--Cover.

Opuscula in hoc uolumine co[n]tenta, Archilochus de te[m]porum antiquitate & homeris octo. Philonis breuiariu[m] de te[m]poribus sacrae scripturae. Berosus chaldeus de origine & successione regnoru[m]. Manethon aegyptius subsecutus berosum in historia. Metasthines persa qui & ipse berosum subsecutus est. Myrsilus lesbius qui de italiae antiquitate scripsit. Xenophon historicus de quorunda aequiuocatio[n]e. Sempronius romanus de italiae descriptione. Fabius pictor historicus de italiae antiquitate. Catonis censorii de originibus fragmentum. Antonini pii ex itinerario italiae descriptio /

Fernández Valladares,

Questionarium Conciliationis simul et expositionis locorum difficilium Sacrae Scripturae : in quo sexcenta scripturae loca exponuntur necdum, vt ille sed etiam necessarium omnibus Sacram Scripturam Euoluentibus [et] praecipue verbi diuini declamatoribus /

CCBE s. XVI, C, 206 y 207; Martín Abad, 989

Histoire de l'inoculation de la petite verole, ou Recueil de mémoires, lettres, extraits et autres écrits sur la petite vérole artificielle / par M. de La Condamine ... ; première[-seconde] partie.

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