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Статті в журналах з теми "Geology – Chile"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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1

Camus, Francisco. "The geology of hydrothermal gold deposits in Chile." Journal of Geochemical Exploration 36, no. 1-3 (February 1990): 197–232. http://dx.doi.org/10.1016/0375-6742(90)90056-g.

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2

Veloso, Eugenio Andres Espinosa, Ryo Anma, and Toshitsugu Yamazaki. "Tectonic rotations during the Chile Ridge collision and obduction of the Taitao ophiolite (southern Chile)." Island Arc 14, no. 4 (December 2005): 599–615. http://dx.doi.org/10.1111/j.1440-1738.2005.00487.x.

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3

Oviedo, Luis, Nicolas Fuster, Natasha Tschischow, Luis Ribba, Alvio Zuccone, Enrique Grez, and Angelo Aguilar. "General geology of La Coipa precious metal deposit, Atacama, Chile." Economic Geology 86, no. 6 (October 1, 1991): 1287–300. http://dx.doi.org/10.2113/gsecongeo.86.6.1287.

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4

Garza, R. A. P., S. R. Titley, and F. Pimentel B. "Geology of the Escondida Porphyry Copper Deposit, Antofagasta Region, Chile." Economic Geology 96, no. 2 (March 1, 2001): 307–24. http://dx.doi.org/10.2113/gsecongeo.96.2.307.

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5

BAKER, P. E., O. GONZALEZ-FERRAN, and D. C. REX. "Geology and geochemistry of the Ojos del Salado volcanic region, Chile." Journal of the Geological Society 144, no. 1 (January 1987): 85–96. http://dx.doi.org/10.1144/gsjgs.144.1.0085.

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6

Hidalgo, E., S. Helle, G. Alfaro, and U. Kelm. "Geology and characterisation of the Pecket coal deposit, Magellan Region, Chile." International Journal of Coal Geology 48, no. 3-4 (January 2002): 233–43. http://dx.doi.org/10.1016/s0166-5162(01)00058-1.

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7

Arriagada, César, and Fernando Martínez. "Effects of the 27 February Chile Earthquake." Journal of Structural Geology 32, no. 4 (April 2010): 393. http://dx.doi.org/10.1016/j.jsg.2010.04.009.

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8

Suarez, M., M. Herve, and A. Puig. "Cretaceous diapiric plutonism in the southern cordillera, Chile." Geological Magazine 124, no. 6 (November 1987): 569–75. http://dx.doi.org/10.1017/s0016756800017398.

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Анотація:

AbstractThe Castores and probably the Santa Rosa plutons of north-west Isla Navarino, southern Chile, have been emplaced by in situ diapirism into metasedimentary rocks of the Upper Jurassic (?)–Lower Cretaceous Yaghan Formation. For the former, this model is consistent with the concentric foliation paralleling the margin of the pluton and the foliation and stratification planes in the metamorphic aureole. Only the southern part of the Santa Rosa Pluton is preserved, and it has some structures similar to those of the Castores Pluton, which can also be interpreted as produced by an inflating diapir. The main intrusive rocks of these plutons are quartz-monzodiorites and quartz-diorites with synmagmatic foliation. They were preceded by minor bodies of hornblende gabbros, and followed by dykes and small bodies of non-foliated granodiorites. Non-foliated to weakly foliated granodiorites, forming the centre of the Castores Pluton, probably represent a younger intrusive pulse.Twelve K–Ar mineral dates from 10 specimens of plutonic rocks, interpreted as near crystallization ages, span the period 80–90 Ma. These dates do not show the sequence of intrusion of the different rock-types, which may suggest that all of them were intruded and cooled in a short period of time. The timing of emplacement of these plutons in relation to tectonism is difficult to determine; however, a post-tectonic emplacement for at least the Castores Pluton, is proposed.

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9

Sillitoe, R. H., J. Tolman, and G. Van Kerkvoort. "Geology of the Caspiche Porphyry Gold-Copper Deposit, Maricunga Belt, Northern Chile." Economic Geology 108, no. 4 (May 2, 2013): 585–604. http://dx.doi.org/10.2113/econgeo.108.4.585.

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10

Kelm, U., M. Pincheira, J. Oyarzún, and V. Sucha. "Combarbalá advanced argillic alteration zone, Chile: geology, geochemistry, mineralogy and mineralization potential." Applied Earth Science 110, no. 2 (August 2001): 91–102. http://dx.doi.org/10.1179/aes.2001.110.2.91.

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11

Cecioni, G., A. A. Meyerhoff, and H. H. Teitz. "GEOLOGY, GEOMORPHOLOGY, AND PETEROLEUM POSSIBILITES OF THE EL GODO AREA, IQUIQUE, CHILE." Journal of Petroleum Geology 11, no. 3 (July 1988): 245–76. http://dx.doi.org/10.1111/j.1747-5457.1988.tb00818.x.

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12

Henríquez, Fernando, and Jan Olov Nyström. "Magnetite bombs at El Laco volcano, Chile." GFF 120, no. 3 (September 1998): 269–71. http://dx.doi.org/10.1080/11035899809453216.

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13

Barrientos, S., E. Vera, P. Alvarado, and T. Monfret. "Crustal seismicity in central Chile." Journal of South American Earth Sciences 16, no. 8 (June 2004): 759–68. http://dx.doi.org/10.1016/j.jsames.2003.12.001.

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14

Marín, Oscar, José O. Valderrama, Andrzej Kraslawski, and Luis A. Cisternas. "Potential of Tailing Deposits in Chile for the Sequestration of Carbon Dioxide Produced by Power Plants Using Ex-Situ Mineral Carbonation." Minerals 11, no. 3 (March 19, 2021): 320. http://dx.doi.org/10.3390/min11030320.

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Анотація:

In this study, the potential of copper tailing deposits in Chile for the sequestration of carbon dioxide (CO2) via ex-situ mineral carbonation integrating the recovery of valuable metals was assessed. An inventory of tailing deposits and CO2 sources existing in Chile was constructed to determine the most suitable site for the installation of a future mineral carbonation plant and to evaluate the technical, economic, and environmental feasibility of CO2 capture, separation, and transport from the source to the mineral carbonation plant. The data of the inventory of tailings deposits in Chile were obtained from the National Service of Geology and Mining. For the thermoelectric plants installed in Chile, data of energy production were obtained from the Energy National Commission. Through the use of the technique for order preference by similarity to ideal solution (TOPSIS) method and sensitivity analysis, the optimum location in the region of Antofagasta to install a mineral carbonation plant was identified. In addition, the results show that in the region of Antofagasta five tailing deposits have the potential to sequester between 66 to 99 Mt of CO2. Meanwhile, thermoelectric plants in 2018 produced about 9.4 Mt of CO2 that is available to be sequestered, with a maximum generation potential of 21.9 Mt of CO2eq per year. The methodology and the study presented can be considered as a preliminary study to identify tailings that require further analysis.

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15

Gasparini, Zulma, Patrick Vignaud, and Guillermo Chong. "The Jurassic Thalattosuchia (Crocodyliformes) of Chile; a paleobiogeographic approach." Bulletin de la Société Géologique de France 171, no. 6 (November 1, 2000): 657–64. http://dx.doi.org/10.2113/171.6.657.

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Abstract The thalattosuchian fossils from the Jurassic of Chile are revised. Some specimens, dating from the Lower Lias (Sinemurian), are the oldest known thalattosuchians, but are too fragmentary to establish a precise taxonomic placement. New specimen related to the genus Metriorhynchus is described from the lower Bajocian. It is the oldest representative of the genus and fills an important gap in our knowledge of the paleogeographic history of this group. Other new cranial fragments, related to the Callovian species Metriorhynchus casamiquelai, are described and this species is revised in the light of new studies on the intraspecific variability in extant crocodilians. Up until now, the known distribution of Liassic Thalattosuchia suggested a circumpacific distribution with minimally episodic passages through the Caribbean Corridor. Nevertheless, the close affinities between the South American and the European Metriorhynchidae from the Callovian to the Tithonian suggest the possibility that more and more frequent communications were made via the Caribbean Corridor. The new data corroborate the hypothesis formulated from the invertebrate faunas.

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16

Barrientos, Sergio E. "Central Chile: An example of quasi-static crustal behavior." Island Arc 6, no. 3 (September 1997): 281–87. http://dx.doi.org/10.1111/j.1440-1738.1997.tb00178.x.

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17

Francis, P. W., M. Gardeweg, C. F. Ramirez, and D. A. Rothery. "Catastrophic debris avalanche deposit of Socompa volcano, northern Chile." Geology 13, no. 9 (1985): 600. http://dx.doi.org/10.1130/0091-7613(1985)13<600:cdados>2.0.co;2.

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18

Hervé, F., M. Calderon, C. M. Fanning, R. J. Pankhurst, F. Fuentes, C. W. Rapela, J. Correa, P. Quezada, and C. Marambio. "Devonian magmatism in the accretionary complex of southern Chile." Journal of the Geological Society 173, no. 4 (March 9, 2016): 587–602. http://dx.doi.org/10.1144/jgs2015-163.

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19

ARDILL, JOHN, STEPHEN FLINT, GUILLERMO CHONG, and HANS WILKE. "Sequence stratigraphy of the Mesozoic Domeyko Basin, northern Chile." Journal of the Geological Society 155, no. 1 (January 1998): 71–88. http://dx.doi.org/10.1144/gsjgs.155.1.0071.

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20

Agurto-Detzel, Hans, Andreas Rietbrock, Klaus Bataille, Matthew Miller, Hikaru Iwamori, and Keith Priestley. "Seismicity distribution in the vicinity of the Chile Triple Junction, Aysén Region, southern Chile." Journal of South American Earth Sciences 51 (April 2014): 1–11. http://dx.doi.org/10.1016/j.jsames.2013.12.011.

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21

Cook, Robert B. "Connoisseur's Choice: Luanheite: Elisa de Bordos Mine, Northern Chile." Rocks & Minerals 77, no. 2 (April 2002): 120–22. http://dx.doi.org/10.1080/00357529.2002.9926667.

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22

Oyarzun M., R. "El complejo de Nahuelbuta-Queule: un posible caso de acreción paleozoica en Chile Central-Sur." Estudios Geológicos 42, no. 1 (February 28, 1986): 11–22. http://dx.doi.org/10.3989/egeol.86421732.

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23

Cabello, José. "Gold Deposits in Chile." Andean Geology 48, no. 1 (January 29, 2021): 1. http://dx.doi.org/10.5027/andgeov48n1-3294.

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Анотація:

A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less relevant regarding their size and gold content. These hydrothermal ore deposits are genetically associated with subduction related Andean arc magmatism. Due to its relationship with episodic magmatism migrating eastward, there is a tendency for the deposits to be in distinct, north-south trending, belts with a progressive west to east decrease in mineralization age. After analysing 82 cases in total, main gold concentration can be assigned to high-sulfidation epithermal and porphyry type deposits. Low-sulfidation epithermal, IOCG and mesothermal type appears as less relevant. Gold bearing copper deposits constitute an important part of Chile’s total gold production. Both IOCG type but especially porphyry copper deposits are and will remain as a substantial source to supplement the future output of the gold in the country. The 82 deposits with their tonnage and grade studied, represent a total gold content of 11,662 t equivalent to 375 Moz, excluding past production for those exploited. A number of probable gold bearing base metals high tonnage deposits (IOCG and porphyry copper) do not include their gold content in public format, hence the number delivered could be estimated conservative. Methodical geochronological, ore types and zonation studies are required to better appreciate this metallogenic setting widening current understanding and future exploration results.

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24

Vita-Finzi, Claudio. "Misattributed tsunami: Chile, Sumatra and the subduction model." Proceedings of the Geologists' Association 122, no. 3 (June 2011): 343–46. http://dx.doi.org/10.1016/j.pgeola.2011.03.010.

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25

Hartley, Adrian J., and Geoffrey May. "Miocene Gypcretes from the Calama Basin, northern Chile." Sedimentology 45, no. 2 (March 1998): 351–64. http://dx.doi.org/10.1046/j.1365-3091.1998.0166e.x.

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26

KATO, TERENCE T. "Pre-Andean orogenesis in the Coast Ranges of central Chile." Geological Society of America Bulletin 96, no. 7 (1985): 918. http://dx.doi.org/10.1130/0016-7606(1985)96<918:poitcr>2.0.co;2.

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27

Lastras, G., D. Amblas, and M. Canals. "Fjord-flank collapse and associated deformation in Aysén Fjord, Chile." Geological Society, London, Memoirs 46, no. 1 (2016): 107–8. http://dx.doi.org/10.1144/m46.15.

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28

Lastras, G., and J. A. Dowdeswell. "Terminal and recessional moraines in the fjords of southern Chile." Geological Society, London, Memoirs 46, no. 1 (2016): 65–66. http://dx.doi.org/10.1144/m46.29.

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29

Hoke, Gregory D., Bryan L. Isacks, Teresa E. Jordan, and Jennifer S. Yu. "Groundwater-sapping origin for the giant quebradas of northern Chile." Geology 32, no. 7 (2004): 605. http://dx.doi.org/10.1130/g20601.1.

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30

Rech, Jason A., Brian S. Currie, Greg Michalski, and Angela M. Cowan. "Neogene climate change and uplift in the Atacama Desert, Chile." Geology 34, no. 9 (2006): 761. http://dx.doi.org/10.1130/g22444.1.

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31

THORNBURG, TODD M., and LAVERNE D. KULM. "Sedimentation in the Chile Trench: Depositional morphologies, lithofacies, and stratigraphy." Geological Society of America Bulletin 98, no. 1 (1987): 33. http://dx.doi.org/10.1130/0016-7606(1987)98<33:sitctd>2.0.co;2.

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32

Best, James L. "Fluidization pipes in volcaniclastic mass flows, Volcan Hudson, Southern Chile." Terra Nova 1, no. 2 (March 1989): 203–8. http://dx.doi.org/10.1111/j.1365-3121.1989.tb00353.x.

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33

Hartley, Adrian, Stephen Flint, and Peter Turner. "Analcime: A characteristic authigenic phase of andean alluvium, northern chile." Geological Journal 26, no. 3 (July 1991): 189–202. http://dx.doi.org/10.1002/gj.3350260302.

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34

Watt, Sebastian F. L., David M. Pyle, and Tamsin A. Mather. "Geology, petrology and geochemistry of the dome complex of Huequi volcano, southern Chile." Andean Geology 38, no. 2 (August 9, 2011): 335. http://dx.doi.org/10.5027/andgeov38n2-a05.

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Анотація:

Huequi, a little-known volcano in the southern part of the Andean southern volcanic zone (SSVZ), shows a regionally unusual eruption style, mineralogy and geochemistry. The volcano comprises multiple highly-eroded lava domes. Past eruptions were accompanied by relatively minor explosive activity, most recently from 1890-1920. The rocks erupted by Huequi range from basaltic andesite to dacite, and are highly distinctive when compared to other volcanoes of the SSVZ, being K-poor and Al-rich, and containing euhedral hornblende phenocrysts. Overall compositions suggest a notably water-rich magma source, evolving through high levels of fractionation and subsequent degassing to produce highly porphyritic dome-forming andesites. The ultimate causes of water-rich magmas at this point in the arc remain unclear.

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35

Suarez, M., and C. M. Bell. "The oldest South American ichthyosaur from the late Triassic of northern Chile." Geological Magazine 129, no. 2 (March 1992): 247–49. http://dx.doi.org/10.1017/s0016756800008323.

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AbstractIchthyosaur remains found in late Triassic shallow marine limestones in Quebrada Doña Inés Chica (latitude 26° 07′ S; longitude 69° 20′ W), northern Chile, are the oldest known ichthyosaur fossils from Central and South America. The previous oldest South American ichthyosaur was recorded in Hettangian rocks, also from northern Chile. The fossils comprise five worn teeth, one paddle bone and one scapula or humerus fragment, all collected from a single bed at the same locality. Although the material has not been identified to a generic or specific level, its presence alone broadens the knowledge of the distribution and habitat of Triassic ichthyosaurs. Late Triassic ammonites and brachiopods in the same stratum provide the age control.

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36

Cornejo, Paula, Richard M. Tosdal, Constantino Mpodozis, Andrew J. Tomlinson, Orlando Rivera, and C. Mark Fanning. "El Salvador, Chile Porphyry Copper Deposit Revisited: Geologic and Geochronologic Framework." International Geology Review 39, no. 1 (January 1997): 22–54. http://dx.doi.org/10.1080/00206819709465258.

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37

Oliveros, Verónica, Paulina Vásquez, Christian Creixell, Friedrich Lucassen, Mihai N. Ducea, Isabella Ciocca, Javiera González, et al. "Lithospheric evolution of the Pre- and Early Andean convergent margin, Chile." Gondwana Research 80 (April 2020): 202–27. http://dx.doi.org/10.1016/j.gr.2019.11.002.

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38

Melnick, D., M. Moreno, M. Motagh, M. Cisternas, and R. L. Wesson. "Splay fault slip during the Mw 8.8 2010 Maule Chile earthquake." Geology 40, no. 3 (January 23, 2012): 251–54. http://dx.doi.org/10.1130/g32712.1.

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39

BELL, C. M. "The origin of the Upper Palaeozoic Chañaral mélange of N Chile." Journal of the Geological Society 144, no. 4 (July 1987): 599–610. http://dx.doi.org/10.1144/gsjgs.144.4.0599.

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40

Bernard, Déruelle, A. Oscar Figueroa, T. Eduardo Medina, G. Jose Viramonte, and C. Mario Maragaño. "Petrology of pumices of April 1993 eruption of Lascar (Atacama, Chile)." Terra Nova 8, no. 2 (March 1996): 191–99. http://dx.doi.org/10.1111/j.1365-3121.1996.tb00744.x.

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41

Zeilinger, Gerold, Fritz Schlunegger, and Guy Simpson. "The Oxaya anticline (northern Chile): a buckle enhanced by river incision?" Terra Nova 17, no. 4 (August 2005): 368–75. http://dx.doi.org/10.1111/j.1365-3121.2005.00622.x.

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42

Romans, B. W., A. Fildani, S. M. Hubbard, J. A. Covault, J. C. Fosdick, and S. A. Graham. "Evolution of deep-water stratigraphic architecture, Magallanes Basin, Chile." Marine and Petroleum Geology 28, no. 3 (March 2011): 612–28. http://dx.doi.org/10.1016/j.marpetgeo.2010.05.002.

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43

Hallam, A., L. Biró-Bagóczky, and E. Perez. "Facies analysis of the Lo Valdés Formation (Tithonian–Hauterivian) of the High Cordillera of central Chile, and the palaeogeographic evolution of the Andean Basin." Geological Magazine 123, no. 4 (July 1986): 425–35. http://dx.doi.org/10.1017/s0016756800033513.

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Анотація:

AbstractFacies descriptions and environmental interpretations are given for outstanding sections of marine Tithonian to Hauterivian strata in the High Cordillera of the central Chilean Andes. Comparisons are made with correlative strata in other regions in Chile, and with the Neuquén Basin of west central Argentina. The rich and partly endemic bivalve fauna, which has strong African affinities, shows no change up the stratigrapic sequence that cannot be related to local facies. Water depth is recognized as the main variable controlling the distribution of the bivalve and ammonite faunas. Utilizing data from both Chile and Argentina, a model is put forward for the late Jurassic to mid Cretaceous sequence whereby the facies distributions are accounted for by the interaction of global sea-level changes and regional tectonics in a shallow back-arc basin.

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44

Bastías, Nicolas, and Gonzalo A. Montalva. "Chile Strong Ground Motion Flatfile." Earthquake Spectra 32, no. 4 (November 2016): 2549–66. http://dx.doi.org/10.1193/102715eqs158dp.

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Анотація:

The Nazca-South American plate boundary produces large-magnitude events (Mw > 8) every 20 years on the coast of Chile. This work describes a public ground motion database that contains 3,572 records from 477 earthquakes and 181 seismic stations, which includes the recent 2015 Mw 8.3 Illapel earthquake. The data set is controlled by subduction interface and inslab events. The oldest event included is Valparaiso (1985), and the magnitude span is 4.6–8.8 Mw. The source-to-site distance metrics reported are the closest distance to the rupture plane ( R rup), epicentral ( R epi) and hypocentral ( R hyp) distances, with a range for R rup from 20 to 650 km. Site characterization is based on V S30, ranging from 110 to 1,951 m/s. Intensity measures included are peak ground acceleration, spectral acceleration values from 0.01 to 10 s, Arias intensity, and peak ground velocity. Each record was uniformly processed component by component. A flatfile with the related metadata and the spectral accelerations from processed ground motions is available at NEEShub ( http://doi.org/10.17603/DS2N30J ; Bastías and Montalva 2015 ).

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45

Assimaki, Dominic, Christian Ledezma, Gonzalo A. Montalva, Andres Tassara, George Mylonakis, and Ruben Boroschek. "Site Effects and Damage Patterns." Earthquake Spectra 28, no. 1_suppl1 (June 2012): 55–74. http://dx.doi.org/10.1193/1.4000029.

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A set of observations on site effects and damage patterns from the Mw 8.8 Maule, Chile, earthquake is presented, focusing on identification of structural damage variability associated with nonuniform soil conditions and subsurface geology. Observations are reported from: (1) the City of Santiago de Chile (Américo Vespucio Norte Ring Highway, Ciudad Empresarial business park), (2) the Municipality of Viña del Mar, and (3) the City of Concepción, extending over 600 km along the Chilean coast. Reconnaissance information and ground motion recordings from the megathrust event are combined with site investigation data in the regions of interest. Comparisons against macroseismic observations related to uneven damage distribution from the Mw 8.0 1985 Valparaíso earthquake are discussed. Complexities associated with identifying the mechanics and underlying physical processes responsible for the manifestation of these effects are elucidated.

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Yáñez, E., M. A. Barbieri, C. Silva, K. Nieto, and F. Espı́ndola. "Climate variability and pelagic fisheries in northern Chile." Progress in Oceanography 49, no. 1-4 (2001): 581–96. http://dx.doi.org/10.1016/s0079-6611(01)00042-8.

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Holm, Kris, and Matthias Jakob. "Long rockfall runout, Pascua Lama, Chile." Canadian Geotechnical Journal 46, no. 2 (February 2009): 225–30. http://dx.doi.org/10.1139/t08-116.

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Rockfall hazard assessments are a routine requirement for many engineers and geoscientists working in the field of geohazards. The scale of investigation and analysis is sometimes constrained by budget, and, in the simplest case, runout will be based on delineation of rockfall shadow zones. Some minimum rockfall shadow zones that have been reported in the literature are widely used by practitioners. We show that these values may not be conservative enough for a study area in the Chilean Andes. Our work suggests that smooth slopes devoid of vegetation may give rise to rockfall shadow zones several degrees below those commonly quoted in the literature. We hope that this short note alerts practitioners to calibrate site-specific rockfall shadow zones rather than relying on published values.

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Wagemann, Elizabeth, and Roberto Moris. "Transitional habitability: Solutions for post-catastrophe in Chile." International Journal of Disaster Risk Reduction 31 (October 2018): 514–25. http://dx.doi.org/10.1016/j.ijdrr.2018.06.007.

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Cigolini, C., M. Laiolo, D. Coppola, and G. Ulivieri. "Preliminary radon measurements at Villarrica volcano, Chile." Journal of South American Earth Sciences 46 (October 2013): 1–8. http://dx.doi.org/10.1016/j.jsames.2013.04.003.

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Pardo, F., M. M. Jordan, and M. A. Montero. "Ceramic behaviour of clays in Central Chile." Applied Clay Science 157 (June 2018): 158–64. http://dx.doi.org/10.1016/j.clay.2018.02.044.

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