 | | 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 | | United States of America 135 138 139 Brazil Paraguay Peru 139 140 China Korea (North) 141 141 Republic...by Mr. D. Thatcher who transferred to another Department in 1964 before the document was completed. The...per cent., occurs in several different forms. Sanidine, the monoclinic high-temperature form, occurs...rocks consisting of alkali-feldspar, typically sanidine, with a sodic feldspathoid, usually nepheline...this rock which carries phenocrysts of nosean, sanidine and nepheline, with aegirine as a groundmass constituent |  | | Book | | Part 1: North and South America Alan R. Woolley Department of Mineralogy British Museum (Natural History)............................................ 205 Paraguay ................................................and correcti ng text and by making various of Paraguay was generously furnished by J . 1 -1 . Palmieri...matrix. The trachytes consist of pheno crysts of sanidine and/or sodic plagioclase in a very fine grained... all contain a bundant phenocrysts of quartz, sanidine and anorth oclase, and sparse phenocrysts o f |  | | 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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