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| Lamarque, Gaelle; Bascou, Jerome; Menot, Rene-pierre; Paquette, Jean-louis; Couzinie, Simon; Rolland, Yann; Cottin, Jean-yves. |
| This study presents the first geochronological results on basement rocks from the Penguin-Bage-Webb (PBW) domain located east of the Neoarchean-Paleoproterozoic Terre Adélie craton, Antarctica. Investigated samples are paragneiss xenoliths hosted within early Paleozoic granitoids, which were emplaced during the Ross orogeny. Zircon UPb dating yielded ages ranging from the Archean to the Cambrian, with a dominant Ediacaran (550–635 Ma) population and maximum depositional ages around 570–575 Ma. U–Th–Pb analyses of monazite suggest that the metamorphic event that formed the gneiss samples occured at ca. 515 Ma, shortly prior to incorporation within the granitic magmas. The studied samples likely represent relics of the pre-Gondawana Pacific margin, which was... |
| Tipo: Text |
Palavras-chave: Gondwana margin; Ross orogeny; George V Land; Antarctica-Australia connection; Zircon and monazite U-Pb dating. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00457/56903/58865.pdf |
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| De Broyer, C.. |
| A new Antarctic lysianassid amphipod, Orchomene hureaui sp.n. from Addlie Land is described and illustrated. The male is unknown. The 2 females were from the stomach of an Adelie penguin. Its epistome is straight and is just in front of the upper lip. The lateral cephalic lobes are rounded and eyes are present. Coxa I is trapezoidal and wide distally, the carpus of gnathopod I shorter than propodite and with no postero-distal lobe, the palm is transverse, slightly convex and deeply toothed. Gnathopod II is subchelate and coxa V has subequal inferior lobes. Uropod III has long setose branches and the telson is divided. The ecology and relations with other Orchomene spp are discussed. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: New species Orchomene hureaui PSE; Antarctica; George V Land; Adelie Land. |
| Ano: 1973 |
URL: http://www.vliz.be/imisdocs/publications/295211.pdf |
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