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Sajama

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Journal Article
Published: 01 March 2001
American Mineralogist (2001) 86 (3): 254-264.
...) the Sandwich Horizon in the Skaergaard intrusion in Greenland; (3) rhyodacites, dacites, and andesites from the Sajama, Porquesa, and Parinacota volcanoes in the Andes; (4) the Fish Canyon Tuff in Colorado; and (5) a quartz-rich, calc-silicate gneiss adjacent to the Horse Creek Anorthosite Complex in Wyoming...
FIGURES | View All (7)
Series: GSA Special Papers
Published: 01 January 1991
DOI: 10.1130/SPE265-p245
...-basalts) are present in the northern Sajama region. These suites are linked to the counterclockwise rotation of the Arica lithospheric block. ...
Image
Range of  P ,  T , and  f  O 2   equilibration conditions prior to eruption...
Published: 01 March 2001
F igure 5. Range of P , T , and f O 2 equilibration conditions prior to eruption for the Sajama, Porquesa, and Parinacota samples. Model estimates suggest similar oxygen fugacity conditions of 2.0–2.5 log f O 2 units above FMQ with decreasing temperatures from Sajama, Porquesa
Image
Figure 1. Locations of Siberia core record in Eastern Cordillera and other ...
in > Geology
Published: 01 March 2003
Figure 1. Locations of Siberia core record in Eastern Cordillera and other Bolivian records corresponding to Last Glacial Maximum interval discussed in text. Sajama is ice core; 1C, 7C, and TD1 are lacustrine cores; Salar of Uyuni is salt sediment core
Image
Figure 1. Measured δ(O 2 /N 2 ) ratios and CO 2 , N 2 O, and CH 4  concentr...
in > Geology
Published: 01 March 2003
Figure 1. Measured δ(O 2 /N 2 ) ratios and CO 2 , N 2 O, and CH 4 concentrations from 12,000 to 17,000 yr B.P. for core recovered from Sajama ice cap. Estimated error on CO 2 measurements is 20% (1σ), due primarily to CO 2 retention within mass spectrometer. Estimated error on N 2 O measurements
Image
Location map of volcanic fields analyzed in this study, using new and previ...
in > Geology
Published: 01 August 2013
Figure 2. Location map of volcanic fields analyzed in this study, using new and previously published data. Or—Oruro field ( Redwood and Rice, 1997 ); Sa—Sajama ( Davidson and deSilva, 1995 ); Oll—Ollague ( Davidson and deSilva, 1995 ); CA, EA—central and eastern Altiplano ( Davidson and deSilva
Image
Topography and δ 18 O mw  (SMOW) values for (a) the Andes, compiled from  A...
Published: 01 October 2007
Figure 2. Topography and δ 18 O mw (SMOW) values for (a) the Andes, compiled from Aravena et al. (1999) and Fritz et al. (1981) ; Hardy et al. (2003) (Sajama); and Cross et al. (2001) (Titicaca); uncorrected Gonfiantini et al. (2001) ; dashed line and equation are corrected Gonfiantini
Image
Figure 2. Plot of concentrations of CO 2 , N 2 O, and CH 4  recovered from ...
in > Geology
Published: 01 March 2003
), and that meltwater had refrozen, trapping all dissolved air. Partial pressures of CO 2 , N 2 O, and CH 4 in atmosphere overlying meltwater were scaled to account for reduced atmospheric pressure at Sajama owing to its high altitude ( Thompson et al., 1998 )
Image
Figure 11. Paleoproductivity curve for the past 22 000 yr based on grass-ab...
Published: 01 March 2002
on mean annual precipitation (MAP) at midden sites today. Steppe grasses today grow in areas with MAP of ∼150 mm and set the past precipitation maximum at the end of the Pleistocene. Solar insolation at lat 20°S and the Sajama δ 18 O ice- core record ( Thompson et al., 1998 ) are plotted for comparison
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Stratovolcanoes in the Central Andes at the border between northern Chile a...
in > Elements
Published: 01 August 2018
Figure 4 Stratovolcanoes in the Central Andes at the border between northern Chile and Bolivia. ( A ) Photo taken from Ajoya Volcano (5,130 m) looking NE. Volcano name abbreviation letters are, P (Parinacota, 6,348 m), S (Sajama, 6,542 m), Q (Quisi Quisini, a Pleistocene, glaciated volcano). Lago
Image
Figure 12. Comparison of paleo-hydrologic and climate proxies over the last...
Published: 01 May 2006
) from core 1PC in Lake Titicaca ( Baker et al., 2001b ); (D) chlorine concentration (black) and accumulation rate (gray) of ice on Mount Sajama ( Thompson et al., 1998 ); (E) reconstructed lake-level curve (this study) and insolation curves ( Baker et al., 2001a ; Wang et al., 2004 ; Cruz et al., 2005
Journal Article
Journal: Geology
Published: 01 March 2003
Geology (2003) 31 (3): 231-234.
...Figure 1. Measured δ(O 2 /N 2 ) ratios and CO 2 , N 2 O, and CH 4 concentrations from 12,000 to 17,000 yr B.P. for core recovered from Sajama ice cap. Estimated error on CO 2 measurements is 20% (1σ), due primarily to CO 2 retention within mass spectrometer. Estimated error on N 2 O measurements...
FIGURES
Journal Article
Journal: Geology
Published: 01 January 2004
Geology (2004) 31 (1): e27.
... at the Siberia location during the LGM, we consider absence of taxa such as Botryococcus or Isoetes indicative of locally dry conditions. Furthermore, the absence in pollen spectra of taxa such as Polylepis, a tree that presently grows on Nevado Sajama up to 5100 m ( Liberman Cruz et al., 1997 ), and a decline...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP462.6
EISBN: 9781786203434
... 64.7 17.8 23.8 4.7 4.4 46.4 135 725 2.4 % difference 1067 509 264 45 197 95 306 133 216 9 15 Sajama summit core (SSC) † Annual snow accumulation = c. 440 mm 1790–1806 Event 7.1 281.3 1045.7 255.1 111.1 284.0 995.8 252.9 111.1 277 066 −15.86...
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Series: AAPG Studies in Geology
Published: 01 January 2001
DOI: 10.1306/St47737C6
EISBN: 9781629810669
.... Further to the south is Sajama, Bolivia (18°S). It is a 6550-m asl extinct volcano on which two cores were drilled to bedrock in 1997 ( Thompson et al., 1998 ). The ice cores from this site are very unusual in that they contain both insect and plant remains in sufficient supply to allow accelerated mass...
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Journal Article
Journal: Geology
Published: 01 March 2003
Geology (2003) 31 (3): 195-198.
...Figure 1. Locations of Siberia core record in Eastern Cordillera and other Bolivian records corresponding to Last Glacial Maximum interval discussed in text. Sajama is ice core; 1C, 7C, and TD1 are lacustrine cores; Salar of Uyuni is salt sediment core ...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 01 May 2006
GSA Bulletin (2006) 118 (5-6): 515-532.
...) from core 1PC in Lake Titicaca ( Baker et al., 2001b ); (D) chlorine concentration (black) and accumulation rate (gray) of ice on Mount Sajama ( Thompson et al., 1998 ); (E) reconstructed lake-level curve (this study) and insolation curves ( Baker et al., 2001a ; Wang et al., 2004 ; Cruz et al., 2005...
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Journal Article
Journal: GSA Bulletin
Published: 01 March 2002
GSA Bulletin (2002) 114 (3): 334-348.
... ), whereas stations above ∼3000 m receive >85% of their annual precipitation during the austral summer (December through March = DJFM) ( Fig. 3, C– E ). This seasonal precipitation pattern for stations above 3000 m matches that of stations on the Bolivian Altiplano to the north, e.g., Sajama at lat 18°S...
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Journal Article
Journal: Geology
Published: 01 March 2002
Geology (2002) 30 (3): 275-278.
... of temperature reversals are recorded in ice core records from Huascaràn, Peru ( Thompson et al., 1995 ), and Sajama, Bolivia ( Thompson et al., 1998 ), and are suggested by past changes in the glaciers of the Andean cordilleras ( Osborn et al., 1995 ). Synchronization of the Younger Dryas oscillation has been...
FIGURES
Journal Article
Journal: Elements
Published: 01 August 2018
Elements (2018) 14 (4): 225-230.
...Figure 4 Stratovolcanoes in the Central Andes at the border between northern Chile and Bolivia. ( A ) Photo taken from Ajoya Volcano (5,130 m) looking NE. Volcano name abbreviation letters are, P (Parinacota, 6,348 m), S (Sajama, 6,542 m), Q (Quisi Quisini, a Pleistocene, glaciated volcano). Lago...
FIGURES | View All (9)