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Journal articles on the topic 'Petrogenic process'

Author: Grafiati

Published: 4 June 2021

Last updated: 17 February 2022

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1

Коrobov, А. D., and L. А. Коrobova. "Petrogenic Water, Hydrothermal Process and Oil Migration in a Tectonically Activated Buried Continental Rift (West Siberia)." Series: Earth Sciences 15, no. 4 (2015): 36–44. http://dx.doi.org/10.18500/1819-7663-2015-15-4-36-44.

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2

Scheingross, Joel S., N. Hovius, M. Dellinger, et al. "Preservation of organic carbon during active fluvial transport and particle abrasion." Geology 47, no. 10 (2019): 958–62. http://dx.doi.org/10.1130/g46442.1.

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Abstract Oxidation of particulate organic carbon (POC) during fluvial transit releases CO2 to the atmosphere and can influence global climate. Field data show large POC oxidation fluxes in lowland rivers; however, it is unclear if POC losses occur predominantly during in-river transport, where POC is in continual motion within an aerated environment, or during transient storage in floodplains, which may be anoxic. Determination of the locus of POC oxidation in lowland rivers is needed to develop process-based models to predict POC losses, constrain carbon budgets, and unravel links between cli

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3

Atta, Uzma, Majid Hussain, and Riffat Naseem Malik. "Environmental impact assessment of municipal solid waste management value chain: A case study from Pakistan." Waste Management & Research: The Journal for a Sustainable Circular Economy 38, no. 12 (2020): 1379–88. http://dx.doi.org/10.1177/0734242x20942595.

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The present study quantified environmental impacts of the Rawalpindi Waste Management Company (RWMC) value chain in Pakistan for three consecutive years (2015–2018) using a cradle-to-grave life cycle assessment (LCA) approach. Energy potential from municipal solid wastes (MSW) was also predicted till the year 2050. Based on a functional unit of 1.0 tonne of MSW, the study analyzed inputs and outputs data through SimaPro v.8.3 applying CML 2000 methodology and cumulative exergy demand indicator (CExD). LCA revealed that operational activities of RWMC mainly contributed to marine aquatic ecotoxi

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4

Sullivan, John, Sharon Croisant, Marilyn Howarth, et al. "Building and Maintaining a Citizen Science Network With Fishermen and Fishing Communities Post Deepwater Horizon Oil Disaster Using a CBPR Approach." NEW SOLUTIONS: A Journal of Environmental and Occupational Health Policy 28, no. 3 (2018): 416–47. http://dx.doi.org/10.1177/1048291118795156.

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When the Deepwater Horizon oil rig blew out in 2010, the immediate threats to productive deep water and estuarial fisheries and the region’s fishing and energy economies were obvious. Less immediately obvious, but equally unsettling, were risks to human health posed by potential damage to the regional food web. This paper describes grassroots and regional efforts by the Gulf Coast Health Alliance: health risks related to the Macondo Spill Fishermen’s Citizen Science Network project. Using a community-based participatory research approach and a citizen science structure, the multiyear project m

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Goldthorp*, Mike, Patrick Lambert, and Carl Brown. "Survey of Portable Oil Detection Methods." International Oil Spill Conference Proceedings 2014, no. 1 (2014): 299894. http://dx.doi.org/10.7901/2169-3358-2014-1-299894.1.

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When oil is spilled into the marine environment, it may be found on the water's surface, in the water column, in the sediment, or on the shoreline. When delineating the extent of contamination, it is important to be able to differentiate the spilled oil from other components that may appear to be oil. There are established methods for detecting oil-in-water, such as fluorometry, that allow in situ measurements to be made. In this study, we investigate both established methods and potential technological advancements that could provide a means for a site investigator to gather meaningful on-sit

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Salikhov, D. N., V. V. Kholodnov, V. N. Puchkov, and I. R. Rakhimov. "Volcanism and intrusive magmatism of the Magnitogorsk paleoarc in the epoch of its “soft” collision with a margin of the East European continent." LITHOSPHERE (Russia) 20, no. 5 (2020): 630–51. http://dx.doi.org/10.24930/1681-9004-2020-20-5-630-651.

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Research subject. The article sets out to investigate the change of the geodynamic regime from the island-arc type to the accretionary-collisional type in the Late Devonian–Early Carboniferous, which occurred as a result of 1) a collision between the Western part of the Magnitogorsk island arc and the Eastern margin of the East European continent and 2) its later coupling with the heterogeneous composite East Uralian terrain.Materials and methods. The content of petrogenic elements and microelements in the rocks of the Late Paleozoic island-arc complexes of the Magnitogorsk island arc were det

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Curtis, David, Vijai Elango, and John H. Pardue. "IMPACTS OF WASHOVER EVENTS ON FATE AND DISTRIBUTION OF MC252 OIL IN A COASTAL SYSTEM." International Oil Spill Conference Proceedings 2014, no. 1 (2014): 300257. http://dx.doi.org/10.7901/2169-3358-2014-1-300257.1.

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Washover events on coastal headland beaches occur when storm surge from cold fronts, high tides, tropical storms, and hurricanes move across the beach, reworking and depositing sand in the back marshes and shallow mudflat areas. On Fourchon Beach, Louisiana, a 9-mile coastal headland beach impacted by the Deepwater Horizon oil spill, these washover events have intermittently moved oil from the subtidal and intertidal portion of the beach to the supratidal mudflats and marsh areas. In order to determine the impacts of washover events on oil fate, 4 complementary studies are being undertaken. Fi

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8

Nikolaeva, Olga V., and Alexey A. Ariskin. "Geochemical constraints on petrogenic processes on Venus." Journal of Geophysical Research: Planets 104, E8 (1999): 18889–97. http://dx.doi.org/10.1029/1996je000337.

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9

Grigoriadou, Anna, Jan Schwarzbauer, and Andreas Georgakopoulos. "Organic geochemical parameters for estimation of petrogenic inputs in the coastal area of Kavala City, Greece." Journal of Soils and Sediments 8, no. 4 (2008): 253–62. http://dx.doi.org/10.1007/s11368-008-0014-4.

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10

Toselli, A. J., J. N. Rossi de Toselli, J. Saavedra, and E. Pellitero. "Granitoids of the Tafi Megafracture (Sierras Pampeanas, Argentina): Petrogenetic implications." Journal of South American Earth Sciences 2, no. 2 (1989): 199–204. http://dx.doi.org/10.1016/0895-9811(89)90047-3.

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11

Naumko, Іhor, N. V. Batsevych, Yu I. Fedoryshyn, Myroslav Pavlyuk, Yu S. Myshchyshyn, and I. V. Repyn. "GEODYNAMICS." GEODYNAMICS 1(30)2021, no. 1(30) (2021): 36–47. http://dx.doi.org/10.23939/jgd2021.01.036.

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Purpose. The main purpose of this paper is to investigate the peculiarities of the spatial distribution of thickness and paleorelief of continental flood basalts of Luchychi stratum of Ratne suite of the Ediacaran of the Ratne–Kamin-Kashyrskyi Area in Western Volyn using maps of the thickness and relief of the paleosurface. The study also focuses on correlation between the specified parameters of the stratum and the spatial change of concentrations of native mineralization and its localization relative to the roof (sole) of the stratum. Method. The research applies a number of methods, includi

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12

Cebriá, J. M., B. M. Martiny, J. López-Ruiz, and D. J. Morán-Zenteno. "The Parícutin calc-alkaline lavas: New geochemical and petrogenetic modelling constraints on the crustal assimilation process." Journal of Volcanology and Geothermal Research 201, no. 1-4 (2011): 113–25. http://dx.doi.org/10.1016/j.jvolgeores.2010.11.011.

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13

Fabriès, J., J. P. Lorand, and J. L. Bodinier. "Petrogenetic evolution of orogenic lherzolite massifs in the central and western Pyrenees." Tectonophysics 292, no. 1-2 (1998): 145–67. http://dx.doi.org/10.1016/s0040-1951(98)00055-9.

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14

Janoušek, Vojtěch, and Jean-François Moyen. "Whole-rock geochemical modelling of granite genesis: the current state of play." Geological Society, London, Special Publications 491, no. 1 (2019): 267–91. http://dx.doi.org/10.1144/sp491-2018-160.

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AbstractWhole-rock geochemistry represents a powerful tool in deciphering petrogenesis of magmatic suites, including granitoids, which can be used to formulate and test hypotheses qualitatively and often also quantitatively. Typically, it can rule out impossible/improbable scenarios and further constrain the process inferred on geological and petrological grounds. With the current explosion of high-precision data, both newly acquired and retrieved from extensive databases, the whole-rock geochemistry-based petrogenetic modelling of igneous rocks will gain further importance. Especially promisi

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15

McMillan, Nancy J., and Michael A. Dungan. "Magma mixing as a petrogenetic process in the development of the Taos Plateau volcanic field, New Mexico." Journal of Geophysical Research 91, B6 (1986): 6029. http://dx.doi.org/10.1029/jb091ib06p06029.

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16

Mahapatro, S. N., J. K. Nanda, and A. K. Tripathy. "The Jugsaipatna Anorthosite Complex, Eastern Ghats Belt, India: Magmatic lineage and petrogenetic implications." Journal of Asian Earth Sciences 38, no. 3-4 (2010): 147–61. http://dx.doi.org/10.1016/j.jseaes.2009.10.008.

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17

Safonova, I., S. Kojima, S. Nakae, et al. "Oceanic island basalts in accretionary complexes of SW Japan: Tectonic and petrogenetic implications." Journal of Asian Earth Sciences 113 (December 2015): 508–23. http://dx.doi.org/10.1016/j.jseaes.2014.09.015.

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18

MASON, PAUL R. D., HILARY DOWNES, MATTHEW F. THIRLWALL, et al. "Crustal Assimilation as a Major Petrogenetic Process in the East Carpathian Neogene and Quaternary Continental Margin Arc, Romania." Journal of Petrology 37, no. 4 (1996): 927–59. http://dx.doi.org/10.1093/petrology/37.4.927.

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19

Felix, Williamy Queiroz, Davis Carvalho Oliveira, Luciano Ribeiro Silva, and Fernando Fernandes Silva. "Charnockites from Carajás Province, SE Amazonian Craton (Brazil): Petrogenetic constraints and intensive crystallization parameters." Journal of South American Earth Sciences 101 (August 2020): 102598. http://dx.doi.org/10.1016/j.jsames.2020.102598.

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20

Sheth, Hetu C., Ashwini Kumar Choudhary, Sudeshna Bhattacharyya, Ciro Cucciniello, Ramesh Laishram, and Trupti Gurav. "The Chogat-Chamardi subvolcanic complex, Saurashtra, northwestern Deccan Traps: Geology, petrochemistry, and petrogenetic evolution." Journal of Asian Earth Sciences 41, no. 3 (2011): 307–24. http://dx.doi.org/10.1016/j.jseaes.2011.02.012.

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21

Bodinier, J. L., M. Guiraud, C. Dupuy, and J. Dostal. "Geochemistry of basic dikes in the Lanzo massif (Western Alps): Petrogenetic and geodynamic implications." Tectonophysics 128, no. 1-2 (1986): 77–95. http://dx.doi.org/10.1016/0040-1951(86)90309-4.

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22

Farahat, E. S., M. S. Abdel Ghani, A. S. Aboazom, and A. M. H. Asran. "Mineral chemistry of Al Haruj low-volcanicity rift basalts, Libya: Implications for petrogenetic and geotectonic evolution." Journal of African Earth Sciences 45, no. 2 (2006): 198–212. http://dx.doi.org/10.1016/j.jafrearsci.2006.02.007.

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23

Ogilvie, Paula, and Roger L. Gibson. "Arrested development – a comparative analysis of multilayer corona textures in high-grade metamorphic rocks." Solid Earth 8, no. 1 (2017): 93–135. http://dx.doi.org/10.5194/se-8-93-2017.

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Abstract. Coronas, including symplectites, provide vital clues to the presence of arrested reaction and preservation of partial equilibrium in metamorphic and igneous rocks. Compositional zonation across such coronas is common, indicating the persistence of chemical potential gradients and incomplete equilibration. Major controls on corona mineralogy include prevailing pressure (P), temperature (T) and water activity (aH2O) during formation, reaction duration (t) single-stage or sequential corona layer growth; reactant bulk compositions (X) and the extent of metasomatic exchange with the surro

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24

MANDAL, ADITI, ARIJIT RAY, MAYUKHEE DEBNATH, and SANKAR PRASAD PAUL. "Petrology, geochemistry of hornblende gabbro and associated dolerite dyke of Paharpur, Puruliya, West Bengal: Implication for petrogenetic process and tectonic setting." Journal of Earth System Science 121, no. 3 (2012): 793–812. http://dx.doi.org/10.1007/s12040-012-0195-5.

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25

Torres-Sánchez, Darío, Sanjeet K. Verma, Surendra P. Verma, Fernando Velasco-Tapia, and José Ramón Torres-Hernández. "Petrogenetic and tectonic implications of Oligocene−Miocene volcanic rocks from the Sierra de San Miguelito complex, central Mexico." Journal of South American Earth Sciences 95 (November 2019): 102311. http://dx.doi.org/10.1016/j.jsames.2019.102311.

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26

Driouch, Y., D. Béziat, M. Grégoire, et al. "Clinopyroxene trace element compositions of cumulate mafic rocks and basalts from the Hercynian Moroccan Central Meseta: Petrogenetic implications." Journal of African Earth Sciences 56, no. 2-3 (2010): 97–106. http://dx.doi.org/10.1016/j.jafrearsci.2009.05.007.

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27

Dabiri, Rahim, Mohamad Emami, Habib Mollaei, et al. "Quaternary post-collision alkaline volcanism NW of Ahar (NW Iran): geochemical constraints of fractional crystallization process." Geologica Carpathica 62, no. 6 (2011): 547–62. http://dx.doi.org/10.2478/v10096-011-0039-2.

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Quaternary post-collision alkaline volcanism NW of Ahar (NW Iran): geochemical constraints of fractional crystallization process Major and trace elements and Sr-Nd isotopic data are presented for the Quaternary alkaline volcanism NW of Ahar (NW Iran). The exposed rocks mainly consist of alkali basalts, trachybasalts, basaltic trachyandesites and trachyandesites. Alkali basalts and trachybasalts display microlithic porphyritic texture with phenocrysts of olivine, clinopyroxene, and plagioclase in microlithic groundmass. In the more evolved rocks (basaltic trachyandesites and trachyandesites), a

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28

Copard, Yoann, Frédérique Eyrolle, Olivier Radakovitch, et al. "Badlands as a hot spot of petrogenic contribution to riverine particulate organic carbon to the Gulf of Lion (NW Mediterranean Sea)." Earth Surface Processes and Landforms 43, no. 12 (2018): 2495–509. http://dx.doi.org/10.1002/esp.4409.

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29

Ding, Xiang-Li, Lin Ding, Li-Yun Zhang, Chao Wang, and Ya-Hui Yue. "Identification and Origin of Jurassic (~182 Ma) Zircon Grains from Chromitite within the Peridotite of the Jijal Complex, Kohistan Arc in North Pakistan." Minerals 10, no. 12 (2020): 1085. http://dx.doi.org/10.3390/min10121085.

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The Jijal ultramafic–mafic complex in Pakistan probably preserves the most complete fragments of the petrological Moho. However, a few studies argue for multiple origins (including petrogenetic speculations and tectonic reconstructions) for different lithologies. One of the main reasons for this dispute is the lack of direct age information of the ultramafic rocks. Zircon grains, despite generally being exotic in ultramafic rocks, can provide significant insights into the petrogenetic process of the host ultramafic rocks. This study reports the first zircon U–Pb age and Lu–Hf and trace element

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30

MacDonald, Michael A., and D. Barrie Clarke. "Occurrence, origin, and significance of melagranites in the South Mountain Batholith, Nova Scotia." Canadian Journal of Earth Sciences 54, no. 7 (2017): 693–713. http://dx.doi.org/10.1139/cjes-2016-0106.

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Melagranites (colour index > 20, with biotite > garnet > cordierite) constitute ∼0.1% of the area of the 7300 km2 peraluminous South Mountain Batholith (SMB), Nova Scotia. The melagranites occur as small bodies showing sharp to gradational contacts against the Meguma Supergroup country rocks, and coeval mingling contacts against other facies of the batholith. They also occur as elliptical or blocky metre-scale enclaves elsewhere in the SMB. Characteristic petrological features of the melagranites include high modal abundances of sulphide minerals, strongly reacted metasedimentary xeno

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31

Singh, A. Krishnakanta, R. K. Bikramaditya Singh, and G. Vallinayagam. "Anorogenic Acid Volcanic rocks in the Kundal area of the Malani Igneous Suite, Northwestern India: geochemical and petrogenetic studies." Journal of Asian Earth Sciences 27, no. 4 (2006): 544–57. http://dx.doi.org/10.1016/j.jseaes.2005.05.008.

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32

Mikhailova, Julia A., Yakov A. Pakhomovsky, Taras L. Panikorovskii, Ayya V. Bazai, and Victor N. Yakovenchuk. "Eudialyte Group Minerals from the Lovozero Alkaline Massif, Russia: Occurrence, Chemical Composition, and Petrogenetic Significance." Minerals 10, no. 12 (2020): 1070. http://dx.doi.org/10.3390/min10121070.

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The Lovozero Alkaline Massif intruded through the Archean granite-gneiss and Devonian volcaniclastic rocks ca. 360 Ma ago and formed a large laccolith-type body. The lower part of the massif (the Layered complex) is composed of regularly repeating rhythms: melanocratic nepheline syenite (lujavrite, at the top), leucocratic nepheline syenite (foyaite), foidolite (urtite). The upper part of the massif (the Eudialyte complex) is indistinctly layered, and lujavrite enriched with eudialyte-group minerals (EGM) prevails there. In this article, we present the results of a study of the chemical compos

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33

Cocirta, C., J. B. Orsini, and C. Coulon. "Exemples de mélange de magmas en contexte plutonique: les enclaves des tonalites–granodiorites du massif de Bono (Sardaigne septentrionale)." Canadian Journal of Earth Sciences 26, no. 6 (1989): 1264–81. http://dx.doi.org/10.1139/e89-107.

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In calc-alkaline orogenic plutons, the dark xenoliths and their host rocks must be considered the expression of partial mixing of magma.Three associations of this type have been investigated and are illustrated by the Bono pluton (northern Sardinia)— a composite pluton including three intrusives of different nature (tonalitic to granodioritic) and containing a very large number of basaltic xenoliths of magmatic origin. Detailed mineralogical analysis of the two end members in each association, coupled with geochemical data, has determined the major petrogenetic mechanisms intervening in the mi

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34

Zaffarana, Claudia Beatriz, Silvia Leonor Lagorio, Gloria Gallastegui, et al. "Petrogenetic study of the Lonco Trapial volcanism and its comparison with the Early-Middle Jurassic magmatic units from northern Patagonia." Journal of South American Earth Sciences 101 (August 2020): 102624. http://dx.doi.org/10.1016/j.jsames.2020.102624.

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35

Otamendi, J. E., F. E. Nullo, A. E. Patiño Douce, and M. Fagiano. "Geology, mineralogy and geochemistry of syn-orogenic anatectic granites from the Achiras Complex, Córdoba, Argentina: some petrogenetic and geodynamic implications." Journal of South American Earth Sciences 11, no. 4 (1998): 407–23. http://dx.doi.org/10.1016/s0895-9811(98)00021-2.

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36

KORONEOS, A., G. POLI, V. CVETKOVIĆ, G. CHRISTOFIDES, D. KRSTIĆ, and Z. PÉCSKAY. "Petrogenetic and tectonic inferences from the study of the Mt Cer pluton (West Serbia)." Geological Magazine 148, no. 1 (2010): 89–111. http://dx.doi.org/10.1017/s0016756810000476.

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AbstractThe Mt Cer Pluton, Serbia, is a complex laccolith-like intrusion (~ 60 km2), situated along the junction between the southern Pannonian Basin and northern Dinarides. It intrudes Palaeozoic metamorphic rocks causing weak to strong thermal effects. Based on modal and chemical compositions, four rock-types can be distinguished: (1) metaluminous I-type quartz monzonite/quartz monzodiorite (QMZD); (2) peraluminous S-type two-mica granite (TMG), which intrudes QMZD; (3) Stražanica granodiorite/quartz monzonite (GDS); and (4) isolated mafic enclaves (ME), found only in QMZD. 40K–39Ar dating a

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37

Karimpour, M. H., C. R. Stern, and G. L. Farmer. "Zircon U–Pb geochronology, Sr–Nd isotope analyses, and petrogenetic study of the Dehnow diorite and Kuhsangi granodiorite (Paleo-Tethys), NE Iran." Journal of Asian Earth Sciences 37, no. 4 (2010): 384–93. http://dx.doi.org/10.1016/j.jseaes.2009.11.001.

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38

Ríos-Reyes, Carlos Alberto, Oscar Mauricio Castellanos-Alarcón, and Carlos Alberto García-Ramírez. "Petrogenetic significance of the eclogites from the Arquía Complex on southwestern Pijao, Central Cordillera (Colombia Andes)." DYNA 84, no. 200 (2017): 291–301. http://dx.doi.org/10.15446/dyna.v84n200.48166.

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Las eclogitas descubiertas en el suroeste de Pijao, Cordillera Central (Colombia Andes), son ricas en almandino (Xalm = 0.50-0.58; XFe = 0.69-0.83) y grosularia (Xgrs = 0.25-0.30), con cantidades menores de piropo (Xprp = 0.12-0.23) y relativamente baja espesartina (Xsps = 0.01-0.05), y la onfacita presenta contenidos de jadeíta, acmita y augita en el clinopiroxeno analizado de 7,00, 3,19 y 89,80% en moles; XMg= 0.82. Las eclogitas sufrieron una trayectoria PT en sentido horario con un ligero aumento de temperatura posterior al Ppeak (a 10.5 kbar y 535°C) a un máximo (Tpeak) a 8.5 kbar and 575

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Shamilishvily, George, Evgeny Abakumov, and Dmitriy Gabov. "Polycyclic aromatic hydrocarbon in urban soils of an Eastern European megalopolis: distribution, source identification and cancer risk evaluation." Solid Earth 9, no. 3 (2018): 669–82. http://dx.doi.org/10.5194/se-9-669-2018.

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Abstract. This study explores qualitative and quantitative composition of 15 priority polycyclic aromatic hydrocarbons (PAHs) in urban soils of some parkland, residential and industrial areas of the large industrial centre of Saint Petersburg (Russian Federation) in Eastern Europe. The aim of the study was to test the hypothesis on the PAH loading differences among urban territories with different land use scenarios. Benzo(a)pyrene toxic equivalency factors (TEFs) were used to calculate BaPeq in order to evaluate carcinogenic risk of soil contamination with PAHs. Results of the study demonstra

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40

Zafar, Tehseen, Hafiz Ur Rehman, Munazzam Ali Mahar, et al. "A critical review on petrogenetic, metallogenic and geodynamic implications of granitic rocks exposed in north and east China: New insights from apatite geochemistry." Journal of Geodynamics 136 (May 2020): 101723. http://dx.doi.org/10.1016/j.jog.2020.101723.

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41

Liu, Yan, Zsolt Berner, Hans-Joachim Massonne, and Dalai Zhong. "Carbonatite-like dykes from the eastern Himalayan syntaxis: geochemical, isotopic, and petrogenetic evidence for melting of metasedimentary carbonate rocks within the orogenic crust." Journal of Asian Earth Sciences 26, no. 1 (2006): 105–20. http://dx.doi.org/10.1016/j.jseaes.2004.10.003.

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42

Zhang, Pan, Guocan Wang, Tianyi Shen, and Chengyu Zhu. "Late Paleozoic back-arc basin in West Junggar (northwestern China): New geochronological and petrogenetic constraints from basalts and cherts in the western Karamay area." Journal of Geodynamics 126 (May 2019): 1–11. http://dx.doi.org/10.1016/j.jog.2019.03.002.

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43

Janoušek, Vojtěch, D. R. Bowes, Colin J. R. Braithwaite, and Graeme Rogers. "Micro structural and mineralogical evidence for limited involvement of magma mixing in the petrogenesis of a Hercynian high-K calc-alkaline intrusion: the Kozárovice granodiorite, Central Bohemian Pluton, Czech Republic." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 91, no. 1-2 (2000): 15–26. http://dx.doi.org/10.1017/s0263593300007264.

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Textural and mineralogical features in the high-K calc-alkaline Kozárovice granodiorite (Hercynian Central Bohemian Pluton, Bohemian Massif) and associated small quartz monzonite masses imply that mixing between acid (granodioritic) and basic (monzonitic/monzogabbroic) magmas was locally petrogenetically significant.Net veining, with acicular apatite and numerous lath-shaped plagioclase crystals present in the quartz monzonite, and abundant mafic microgranular enclaves (MME) in the granodiorite, indicate that as the monzonitic magma was injected into the granodioritic magma chamber, it rapidly

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44

Bussell, M. Andrew. "Structure and petrogenesis of a mixed-magma ring dyke in the Peruvian Coastal Batholith: eruptions from a zoned magma chamber." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 79, no. 2-3 (1988): 87–104. http://dx.doi.org/10.1017/s0263593300014140.

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ABSTRACTRing complex granites of the Peruvian Batholith are tabular bodies with flat roofs emplaced by cauldron subsidence. Marginal precursory ring dykes extend upwards above roof level and a typical intrusion is “H”-shaped in cross-section. Advance of magma by repeated subsidence would give a ladder-shaped profile for such intrusions above the brittle-ductile transition. Close relationships exist between intrusion geometry, emplacement process and petrogenetic evolution. Initially a granodioritic magma chamber lay beneath the present erosion level, trapping a rising mass of dioritic magma. E

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Sun, Shuwen, Enno Schefuß, Stefan Mulitza, et al. "Origin and processing of terrestrial organic carbon in the Amazon system: lignin phenols in river, shelf, and fan sediments." Biogeosciences 14, no. 9 (2017): 2495–512. http://dx.doi.org/10.5194/bg-14-2495-2017.

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Abstract. The Amazon River transports large amounts of terrestrial organic carbon (OCterr) from the Andean and Amazon neotropical forests to the Atlantic Ocean. In order to compare the biogeochemical characteristics of OCterr in the fluvial sediments from the Amazon drainage basin and in the adjacent marine sediments, we analysed riverbed sediments from the Amazon mainstream and its main tributaries as well as marine surface sediments from the Amazon shelf and fan for total organic carbon (TOC) content, organic carbon isotopic composition (δ13CTOC), and lignin phenol compositions. TOC and lign

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Walker, J. A., L. C. Patino, B. I. Cameron, and M. J. Carr. "Petrogenetic insights provided by compositional transects across the Central American arc: Southeastern Guatemala and Honduras." Journal of Geophysical Research: Solid Earth 105, B8 (2000): 18949–63. http://dx.doi.org/10.1029/2000jb900173.

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Frolova, J. V., V. V. Ladygin, E. M. Spiridonov, and G. N. Ovsyannikov. "PHYSICAL-MECHANICAL PROPERTIES OF METAVOLCANIC ROCKS OF THE MOUNTAIN CRIMEA." Engineering Geology 13, no. 4-5 (2018): 36–51. http://dx.doi.org/10.25296/1993-5056-2018-13-4-5-36-51.

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The article considers the petrogenetic features of the volcanogenic rocks of the Middle Jurassic age of the Mountain Crimea and analyzes their influence on physical (density, porosity, water absorption, and magnetic susceptibility) and physical-mechanical properties (strength, modulus of elasticity, and Poisson's ratio). Among volcanogenic strata there are subvolcanic, effusive and volcanogenic-clastic rocks. All volcanic rocks were altered under the influence of the regional low-grade metamorphism of the zeolite and prehnite-pumpellyite facies, which resulted in a greenstone appearance. Among

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Li, Yilong, Wenjiao Xiao, Zhuoyang Li, Ke Wang, Jianping Zheng, and Fraukje M. Brouwer. "Early Neoproterozoic magmatism in the Central Qilian block, NW China: Geochronological and petrogenetic constraints for Rodinia assembly." GSA Bulletin 132, no. 11-12 (2020): 2415–31. http://dx.doi.org/10.1130/b35637.1.

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Abstract The supercontinent Rodinia existed as a coherent large landmass from 900 to 750 Ma and is now dispersed over all current major continents. Controversy has long surrounded the reconstructions of the East Asian blocks in Rodinia, especially the South China craton and nearby microcontinents. The Central Qilian block is a Precambrian microcontinent in the early Paleozoic Qilian orogenic belt, which is located in the northeastern part of the Qinghai-Xizang (Tibet) Plateau and marks the junction of the North China, South China and Tarim cratons. The formation and tectonic affinity of the Pr

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Harley, S. L. "The origins of granulites: a metamorphic perspective." Geological Magazine 126, no. 3 (1989): 215–47. http://dx.doi.org/10.1017/s0016756800022330.

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AbstractAlthough many recent reviews emphasize a uniformity in granulite pressure–temperature (P–T) conditions and paths, granulites in reality preserve a spectrum of important petrogenetic features which indicate diversity in their modes of formation. A thorough survey of over 90 granulite terranes or occurrences reveals that over 50% of them recordP–Tconditions outside the 7.5 ± 1 kbar and 800 ± 50 °C average granulite regime preferred by many authors. In particular, an increasing number of very high temperature (900−1000 °C) terranes are being recognized, both on the basis of distinctive mi

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Tomlinson, K. Y., R. P. Hall, D. J. Hughes, and P. C. Thurston. "Geochemistry and assemblage accretion of metavolcanic rocks in the Beardmore–Geraldton greenstone belt, Superior Province." Canadian Journal of Earth Sciences 33, no. 11 (1996): 1520–33. http://dx.doi.org/10.1139/e96-115.

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The Beardmore–Geraldton greenstone belt lies between the Wabigoon volcanic arc (Onaman–Tashota terrane) and the Quetico metasedimentary subprovince and thus has an important bearing on the accretionary model that has been proposed for the amalgamation of these terranes. This paper presents geochemical evidence for the petrogenetic affinities of the volcanic units of the western half of the Beardmore–Geraldton greenstone belt. These data suggest that the metavolcanic rocks of the greenstone belt form a series of distinct packages. Trace element data are used to demonstrate the similarities and

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