 | | Report (issue) | | Geology and Mineral Resources of Paraguay A Reconnaissance GEOLOGICAL SURVEY PROFESSIONAL Prepared...Obras Publicas y ComunicacioneSj Republica del Paraguay, under the auspices of the Institute of Inter-American...PAPER 327 Geology and Mineral Resources of Paraguay A Reconnaissance By EDWIN B. ECKEL With sections...Obras Publicas y Comunicaciones, Republica del Paraguay, under the auspices of the Institute of In ter-...PRINTING OFFICE, WASHINGTON : 1959 UNITED STATES DEPARTMENT OF THE INTERIOR FRED A. S EATON, Secretary GEOLOGICAL |  | Comin-Chiaramonit, P., Cundari, A., Piccirillo, E.M., Gomes, C.B., Castorina, F., Censi, P., De Min, A., Marzoli, A., Speziale, S., Velazquez, V.F. (1997) Potassic and Sodic Igneous Rocks from Eastern Paraguay: their Origin from the Lithospheric Mantle and Genetic Relationships with the Associated Parana flood tholeiites. Journal of Petrology, 38 (4) 495-528 doi:10.1093/petroj/38.4.495 | Journal (article/letter/editorial) | | Potassic and Sodic Igneous Rocks from Eastern Paraguay: their Origin from the Lithospheric Mantle and...JUNE 4, 1996 ACCEPTED NOVEMBER 7, 1996 Eastern Paraguay represents the westernmost fringe of Early Cretaceous...Geral Formation, SGF). Besides the SGF, eastern Paraguay has been the site of alkaline magmatism since...the Asunción–Sapucai graben (ASU) of eastern Paraguay: (1) widespread potassic magmatism and SGF tholeiites...carbonatites. The investigated rocks occur in eastern Paraguay and span the Mesozoic to Eocene–Oligocene times |  | | Book | | Geological Sciences Mineral Resources Division Nepheline —-Syenite and Phonolite HMSO 15s Od Digitized...Natural Environment Research Council Contents Nepheline-Syenite and Phonolite Introduction Chemistry...Mineralogy and Classification of Nepheline-Bearing Rocks Origin of Nepheline-Bearing Rocks Mining and Treatment...Economic Assessment of Nepheline-Syenite and Phonolite Occurrences Nepheline-Syenite and Phonolite in...Uganda Zambia Canada India Australia New Zealand Nepheline-Syenite and Phonolite in Foreign Countries Czechoslovakia |  | | Book | | Part 1: North and South America Alan R. Woolley Department of Mineralogy British Museum (Natural History)............................................ 205 Paraguay ................................................amphiboles'. The rocks included are, therefore, the nepheline syenites (phonolites) and ijolites (nephelin...instance, containing normative but not moda.l nepheline, are excluded. However, sometimes these rocks...rocks contain such a high proportion of normative nepheline that it must be present as an occult phase in |  | | Report (issue) | | genesis of melting anomalies Gillian R. Foulger* Department of Earth Sciences, Durham University, Durham...and some of its implications Norman H. Sleep* Department of Geophysics, Stanford University, Stanford...the hotspot reference frame W. Jason Morgan* Department of Earth and Planetary Sciences, 20 Oxford Street...Massachusetts 02138, USA Jason Phipps Morgan Department of Earth and Atmospheric Sciences, Snee Hall...2430-0-430-0-65.pdf by guest WJM thanks the Department of Earth and Planetary Sciences at Harvard University |
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