GEOCHEMICAL and PETROLOGICAL DATA
New Petrological and Geochemical Data of the Nephelinitic Lavas and Geodynamic Implications of Mount Etinde (Cameroon)
... 6. Conclusions Mineralogical, geochemical and trace elements are reported for the main nephelinite rocks on the Mount Etinde. The major and trace element composition of the host alka- line nephelinite suggest that ...
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Geochemical and Petrological characteristics of the Granitoid Complex of Boroujerd,Western Iran
... The geochemical characteristics, mineralogy and petrography of these rocks are comparable with the typical I-type ...displays geochemical characteristics typical of volcanic arc granites related to an ...
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GEOCHEMICAL AND PETROLOGICAL CHARACTERISTICS OF DEH SIAHAN GRANITIC ROCKS, SOUTHWEST OF KERMAN, IRAN: DATA BEARING ON GENESIS
... ratios. Geochemical data, various trace element discriminant diagrams, enhanced Y/Nb and Ce/Nb ratio, and ocean ridge granite normalized multi- element diagrams indicate that the Deh Siahan granitic rocks ...
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Petrological and geochemical variation during the Soufrière Hills eruption, 1995 to 2010.
... A B Figure 11 Harker plots of SiO 2 vs FeO for phases 1, II and III by lab showing an absence of any systematic inter-lab variation in the data for andesites- A and enclaves-B. L-leciester, JD- Joe Devine, SS- ...
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Geochemical and petrological investigation into the magmatic system at Soufrière Hills Volcano, Montserrat.
... Instead, the linear trends defined for many elements between the andesite and mafic enclaves can be reproduced by differing degrees of mixing between the type A enclaves and andesite. Scatter in the compositions outside ...
207
Organic Petrological and Geochemical Evaluation of Jurassic Source Rocks from North Iraq
... [17] J. G. Speight, The chemistry and technology of petroleum, 4th ed.: CRC Press is an Imprint of the Taylor & Francis Group, 2007. [18] J. Brooks, Organic maturation studies and fossil fuel exploration vol. 360. ...
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Petrological and geochemical comparison of the ultramafic rocks of Tulppio, Jänesselkä and Värriöjoki, eastern Finnish Lapland
... geophysical data and more comprehensive road network have made the recognition of ultramafic rock suites easier and have enabled more detailed understanding of the geology of eastern ...
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Petrological and Geochemical Study of the Organic Matter in the Sabinas-Piedras Negras Basin, Coahuila (NE Mexico)
... some geochemical and petrographical data for fifty wells in the studied ...the data was considered reliable for study. Complementary geochemical and petrographical analyses were ...
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Magmatism in the Asunción-Sapucai-Villarrica Graben (Eastern Paraguay) Revisited: Petrological, Geophysical, Geochemical, and Geodynamic Inferences
... Geological, petrological, mineralogical, and geochemical results indicate that the following magmatic events are dominant in the area: (1) tholeiitic basalt and basaltic andesites, flows and sills of low- ...
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A geochemical and petrological study of the crystalline basement and associated megablocks of the Eyreville-B drillcore, Chesapeake Bay impact structure, USA
... and data analysis based on the following international standards: CR-2CAS1, HG-BAH, MRG-1, NIM-D, NIM-G, NIM-L, NIM-N, NIM-P, NIM-S, SY-3, UN-SPS, VS-813, VS-2116, VS-2117, VS-2119, VS-2120, VS-2121, VS-2122, ...
365
Searching for nonlocal lithologies in the Apollo 12 regolith: a geochemical and petrological study of basaltic coarse fines from the Apollo lunar soil sample 12023,155
... New data from a petrological and geochemical examination of 12 coarse basaltic fines from the Apollo 12 soil sample 12023,155 provide evidence of additional geochemical diversity at the ...
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The 1994–2001 eruptive period at Rabaul, Papua New Guinea: Petrological and geochemical evidence for basalt injections into a shallow dacite magma reservoir, and significant SO 2 flux
... seismic data and the RELACS tomographic experiment results, and Hugh Davies of Earth Sciences Division, University of Papua New Guinea (UPNG), for sharing results obtained on 1994-2001 eruption ...
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East Vardar ophiolites revisited: a brief synthesis of geology and geochemical data
... Subduction geochemical affinity shown by the basic rocks The East Vardar ophiolites, in general, share two striking petrological characteristics: i) they are predominantly composed of volcano-intrusive se- ...
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Petrological and Geochemical Evaluation of the Paleocene Eocene Lithofacies in Dahomey Embayment, Southwestern Nigeria
... the geochemical indices show increase in the percentage compo- sition of CaO, and MgO down the sequences with high values which defined the depth of diagenetic ...
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Petrological, geochemical, and diagenetic studies of the Euphrates Limestone Formation (Lower Miocene) of the Jambur area, Northeast Iraq
... In the Euphrates Limestone Formation pyrite is found in various forms, the first form is framboidal, within intercrystalline porosity in the dolomite (Fig 5.13, 5.14). The[r] ...
296
Tarkwaian Deposits of the Birimian Belt of Houndé: Petrological, Structural and Geochemical Study (Burkina Faso, West Africa)
... calc-alkaline geochemical signatures of the Birimian volcanics and their subvolcanic vein associated Ebur- nean granites are like emanations of geodynamic contexts of intra-oceanic subduction with insular arc ...
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Mafic dykes of the East Antarctic shield : experimental, geochemical and petrological studies focusing on the proterozoic evolution of the crust and mantle
... Nearly all of the samples belonging to the high-Mg tholeiite suite were Collected from Chilled margins, and consequently contain fine grained and sometimes quench textured groundmasses[r] ...
345
PETROLOGICAL AND GEOCHEMICAL STUDIES OF ALKALINE ROCKS FROM CONTINENTAL BRAZIL. 8. THE SYENITIC INTRUSION OF MORRO REDONDO, RJ
... Compositional trends evidenced by variation diagrams and petrography suggest an initial se- paration of plagioclase + clinopyroxene + am- phibole ± biotite ± opaques, sphene and apatite,[r] ...
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PETROLOGICAL ABSTRACTS AND REVIEWS
... The later abyssal rocks are granites, syenites, nephelite- syenites, gabbros, and essexites, and of these all but the gabbros and essexites, which form small boss[r] ...
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Application of compositional data analysis to geochemical data of marine sediments
... compositional data analysis was made and many case studies were published using new tools for exploratory analysis of these ...suitable data trans- formations, reduction of the D-part simplex to two or ...
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