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Junin Plain

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Journal Article
Journal: Geology
Published: 27 April 2020
Geology (2020) 48 (7): 678–682.
...James B. Molloy; Donald T. Rodbell; David P. Gillikin; Kurt T. Hollocher Abstract Inadequate management of mine tailings at Cerro de Pasco, one of Peru’s largest mining complexes, has resulted in elevated concentrations of Pb, As, Cu, Zn, and Ag in surface soil horizons across the Junín Plain...
FIGURES
Journal Article
Journal: Geology
Published: 01 January 2000
Geology (2000) 28 (1): 35–38.
... to eliminate as much shell material as possible from the samples without manual picking. Lake Junin (11°S) is located at 4000 m on the Junin Plain between the Cordillera Oriental and Cordillera Occidental of the Andes (Fig. 1) . Glacial outwash fans and moraines emanating from the surrounding cordilleras...
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Spatial distribution of Pb, Cu, Ag, As, and Zn concentration in soils on th...
in > Geology
Published: 27 April 2020
Figure 3. Spatial distribution of Pb, Cu, Ag, As, and Zn concentration in soils on the Junín Plain, central Peru (Table S1 [see footnote 1 ]). Contamination brackets show the magnitude of contamination of the X th percentile of the data. Elevated concentrations are evident within 10 km of Cerro
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1962
AAPG Bulletin (1962) 46 (10): 1773–1814.
... Brazilian shields), intercratonic basins (Amazonas, Parnaiba, Sāo Francisco, and Paraná), pericratonic basins (Llanos-Iquitos-Acre-Beni-Chaco-Pampas plains), nesocratons (Pampean Ranges, Patagonia, and Deseado massifs), and geosynclines (Andean belts). Since Early Cambrian time the cratonic...
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Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2013
DOI: 10.1306/13371599St643566
EISBN: 9781629812649
... The Orinoco oil belt is divided, from west to east, into four distinct production zones: Boyacá, Junín, Ayacucho, and Carabobo (Figure 3 ). It includes five projects in operation between the state oil company PDVSA and foreign partners: (1) Petrocedeño (ex-Sincor) PDVSA, 60%; Total, 30...
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Journal Article
Journal: Geology
Published: 01 November 2009
Geology (2009) 37 (11): 1019–1022.
... global cycle of Hg. Here, we utilize a lake sediment core to reconstruct the history of mining and metallurgy around Cerro de Pasco, once the world's largest silver mine. Cerro de Pasco is located on the Junín plain in central Peru ( Fig. 1 ). Following colonial discovery ca. A.D. 1630, it quickly...
FIGURES
Series: AAPG Studies in Geology, AAPG Studies in Geology
Published: 01 January 2013
DOI: 10.1306/13371590St643559
EISBN: 9781629812649
... in the hydrocarbon-bearing lower member of the Oficina Formation. Petrocedeño (formerly Sincrudos de Oriente C.A. [Sincor]) is an oil company operating primarily in the Junín (Zuata) region of the Orinoco Heavy Oil belt in Venezuela, recognized as the largest extra heavy-oil reservoir in the country...
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Journal Article
Journal: Economic Geology
Published: 01 September 2004
Economic Geology (2004) 99 (6): 1085–1106.
... of the Ecuadorian Andes do not entirely reflect the compositions of the associated magmas, but incorporate basement-rock lead leached by hydrothermal fluids. Ecuador consists of five distinct physiographic provinces (Coastal Plain, Cordillera Occidental, Interandean Graben, Cordillera Oriental, and Oriente...
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Journal Article
Journal: PALAIOS
Published: 01 November 2014
PALAIOS (2014) 29 (11): 570–577.
... in the Sierras Australes ranges (Ventana and Curamalal), the Villarino district, and the islands of the Bahía Blanca estuary. However, in southwestern Buenos Aires Province, in the Sierras Australes ranges and surrounding plains, this species was abundant from the late Pleistocene to the late Holocene...
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Journal Article
Published: 01 June 2016
Bulletin of Canadian Petroleum Geology (2016) 64 (2): 106–118.
... disconformity ( Hancock and Kaufman, 1979 ). During transgression, the coastline moves landwards and the shelf area broadens. This is followed by greater confinement of sediment in the alluvial and coastal plain environments, reduced sediment influx to the basin, and reworking of previously deposited sediments...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1963
AAPG Bulletin (1963) 47 (1): 1–34.
... into three natural regions which are, from southwest to northeast, the low Coastal Region, the mountainous Andean Region, and the broad river valleys of the Eastern Lowlands. The Coastal Region is a narrow strip of desert between the Pacific Ocean and the Andean Region. There is a narrow coastal plain...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1945
AAPG Bulletin (1945) 29 (5): 495–563.
... because those rocks are too tight to produce naturally. It is hoped that they may be made productive by shooting. In the eastern Andes of Argentina and on the plains at their foot, all the way from about Lat. 44° S. to the eastern tip of Tierra del Fuego, there is a thick series of marine...
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Journal Article
Journal: Economic Geology
Published: 01 May 2008
Economic Geology (2008) 103 (3): 493–537.
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Journal Article
Published: 01 March 1973
Journal of the Geological Society (1973) 129 (2): 93–131.
... in Part of the Province of Junin, Peru Q Jl geol Soc Lond 1943 99 1 36 Hayes D. E. A geophysical investigation of the Peru-Chile Trench Marine Geol 1966 4 309 351 Hayes D. E. Ewing M. North Brazilian Ridge and Adjacent Continental Margin Bull Am Ass Petrol Geol 1970...
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1972
AAPG Bulletin (1972) 56 (6): 1008–1033.
... Bolivia from Lake Titicaca and the Peruvian border on the north to the Argentine border on the south ( Fig. 1 ). The northeastern limit of exposure is where the subandean foothills dip beneath the Tertiary-Quaternary cover of the Chaco-Beni plain; the southwesternmost outcrops are inliers in the Tertiary...
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Journal Article
Published: 01 September 2017
Bulletin of Canadian Petroleum Geology (2017) 65 (3): 343–365.
... . In: Saskatchewan and Northern Plains Oil and Gas Symposium 2006 . C.F. Gilboy and S.G. Whittaker (eds.). Saskatchewan Geological Society, Special Publication No. 19 , p. 118 – 137 . LeFever , J.A. , Martiniuk , C.D. , Dancsok , E.F.R. and Mahnic P.A. 1991 . Petroleum...
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Journal Article
Journal: Palynology
Published: 01 November 2015
Palynology (2015) 39 (3): 350–361.
... . Hofstede R Groenendijk J Coppus R Fehse J Sevink J . 2002 . Impact of Pine Plantations on Soils and Vegetation in the Ecuadorian High Andes . Mountain Research and Development 22 : 159 – 167 . Hooghiemstra H . 1984 . Vegetation and Climatic History of the High Plain...
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Journal Article
Journal: AAPG Bulletin
Published: 01 May 1954
AAPG Bulletin (1954) 38 (5): 707–773.
... with broad shelves, both on the Atlantic and the Gulf sides. The Cretaceous and Tertiary coastal plain sediments on the north grade from clastic to almost entirely carbonate and evaporite on the south. They also become progressively thicker southward (Applin and Applin, 1944 , p. 1734), and are coextensive...
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Journal Article
Published: 01 January 2005
Journal of Sedimentary Research (2005) 75 (1): 12–28.
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Journal Article
Journal: Palynology
Published: 03 July 2018
Palynology (2018) 42 (3): 420–433.
... a quantitative analysis of the palynological content of two Early Cretaceous successions from Peru, with the goals of (i) reconstructing the floristic composition using pollen and spores and (ii) assessing whether the climate was humid or arid. This succession was sampled in the Ucayali Basin, Junin...