geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

La sizunite (cap Sizun, Finistere) et le probleme de l'origine des lamprophyres


, : La sizunite (cap Sizun, Finistere) et le probleme de l'origine des lamprophyres. Bulletin de la Societe Geologique de France 4(2): 141-156

Sizunite, a micaceous lamprophyre including small granitic xenoliths, is found in a NW-SE trending vein in granites of the Hercynian orogeny (western France). The xenoliths are of two types--numerous small globular forms containing biotite, and less abundant angular forms containing two micas. The sizunite is distinguished by its extreme richness in potassic elements and by the fact that microcline is the only feldspar present. Chemical analysis shows that this rock is the most potassic and phosphoric of the 382 lamprophyres known. Results of modal analyses and micrographic studies classify it in the alkalic syenite group. It is probably the product of selective assimilation of certain granitic elements by a deep-seated basic magma, related to a late orogenic phase. The magma contaminated itself while cutting across freshly folded and granitized, mesothermal sial.

US$29.90


Other references

Ichikawa, S.; Ueno, H.; Sunadome, T.; Sato, K.; Matsuda, A., 2013: Tris(azidoethyl)amine hydrochloride; a versatile reagent for synthesis of functionalized dumbbell oligodeoxynucleotides. Triazole-cross-linked oligodeoxynucleotides were synthesized using the Cu(I) catalyzed alkyne-azide cycloaddition with tris(azidoethyl)amine hydrochloride and oligodeoxynucleotides possessing N-3-(propargyl)thymidine at both the 3'- and 5&apo...

Tang, W.J.; Folk, W.R., 1989: Constitutive expression of simian virus 40 large T antigen in monkey cells activates their capacity to support polyomavirus replication. Polyomavirus DNA replication is normally restricted to rodent cells, and simian virus 40 (SV40) DNA replication is restricted to primate cells. We demonstrate that DNAs containing the polyomavirus origin can be replicated in monkey cells which con...

Kiriakoff, Sg, 1973: New or little-known Thyretidae (Lepidoptera: Notodon toidea). Mitteilungen 3 49-66

Ismaili, N.; Elmajjaoui, S.; Lalya, I.; Boulaamane, L.; Belbaraka, R.; Abahssain, H.; Aassab, R.; Benjaafar, N.; E.G.ddari, B.El.Khalil.; E.M.sbahi, O.; Sbitti, Y.; Ismaili, M.; Errihani, H., 2010: Anthracycline and concurrent radiotherapy as adjuvant treatment of operable breast cancer: a retrospective cohort study in a single institution. Concurrent chemoradiotherapy (CCRT) after breast surgery was investigated by few authors and remains controversial, because of concerns of toxicity with taxanes/anthracyclines and radiation. This treatment is not standard and is more commonly used...

Bricolo A., 1979: Medullary tractotomy for cephalic pain of malignant disease. Bonica, J J And V Ventafridda (Ed ) Advances in Pain Research And Therapy, Vol 2 International Symposium on Pain Of Advanced Cancer, Venice, Italy, May 24-27, 1978 Xxix+702p Raven Press: New York, N Y , Usa Illus P453-462

Wang; Wang, 1996: Simulating the time-dependent dx2-y2 Ginzburg-Landau equations using the finite-element method. Physical Review. B, Condensed Matter 54(22): R15645-R15648

Kim, J.S.ok; Maruyama, A.; Akaike, T.; Kim, S.W.n, 1998: Terplex DNA delivery system as a gene carrier. Purpose: To characterize the physical and biochemical properties of the DNA terplex delivery system, which has previously been shown to deliver and express pSV-beta-gal plasmid efficiently in cultured smooth muscle cells (SMC) (1). Methods: Atomic...

Yusupov T.S.; Grigor yeva T.N.; Korneva T.A.; Pantyukova L.P., 1981: Variation of structural characteristics of fluorite as a function of technologic factors of dispersion. Trudy Instituta Geologii i Geofiziki (Novosibirsk) 487: 62-65

Giuffre', L.; Corso, D.; Cammarata, M.; Benigno, V.; Curcuru', M., 1977: The 4 p-syndrome. La Pediatria 85(4): 589-604

Desai, M.R.; Terlouw, D.J.; Kolczak, M.S.; Phillips Howard, P.A.; Odhacha, A.; Hawley, W.A.; Kariuki, S.K.; Nahlen, B.L.; Ter Kuile, F.O., 2000: Prevalence, severity, and risk factors for anemia among pre-school children in western Kenya. American Journal of Tropical Medicine & Hygiene 62(3 Supplement): 134, March