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Quelccaya ice cap

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Journal Article
Journal: Geology
Published: 01 December 2015
Geology (2015) 43 (12): 1113.
... of the paragraph before the Discussion section should read: The CE 1963 ice margin position (Thompson et al., 2006) of Qori Kalis was near the Hu-Ih moraine. Three 10 Be ages of boulders associated with the Hu-Ih moraine are consistent with one another with a mean age of 220 ± 10 yr. The Hu-Ig and Hu-Ih moraines...
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Journal Article
Journal: Geology
Published: 01 April 2014
Geology (2014) 42 (4): 347–350.
... climate in the southern tropics, we present a 10 Be chronology of moraines deposited by Qori Kalis, an outlet glacier of Quelccaya Ice Cap in Peru. The Qori Kalis moraines are located downflow from the Quelccaya ice cores and provide the first glacial extent record that can be compared directly...
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Journal Article
Journal: Geology
Published: 01 November 2012
Geology (2012) 40 (11): 991–994.
... to reveal the possible mechanisms for these events. Here we present a reconstruction of the late glacial fluctuations of Quelccaya Ice Cap, located in the southern tropics, based on 38 new radiocarbon ages. Quelccaya was retreating from its Last Glacial Maximum (ca. 21 ka) extent by ca. 17.2 ka...
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Glacial geologic map of the western side of <span class="search-highlight">Quelccaya</span> <span class="search-highlight">Ice</span> <span class="search-highlight">Cap</span> (southeastern...
Published: 01 November 2012
Figure 1. Glacial geologic map of the western side of Quelccaya Ice Cap (southeastern Peru). Calibrated radiocarbon ages, shown in cal. (calibrated) kyr B.P., pertain to the timing of deglaciation from the Huancané III moraines and the age of the Huancané II moraines. Ages shown include 38 ages
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Changes in the Qori Kalis Glacier, <span class="search-highlight">Quelccaya</span> <span class="search-highlight">Ice</span> <span class="search-highlight">Cap</span>, Peru, between 1978 ( ...
Published: 01 June 2007
FIGURE 3 Changes in the Qori Kalis Glacier, Quelccaya Ice Cap, Peru, between 1978 ( A ) and 2002 ( B ). Loonie Thompson and colleagues have demonstrated similar glacial retreat in tropical locations around the world ( Thompson et al. 2006 ). P hoto credit L onnie T hompson
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Changes in the Qori Kalis Glacier, <span class="search-highlight">Quelccaya</span> <span class="search-highlight">Ice</span> <span class="search-highlight">Cap</span>, Peru, between 1978 ( ...
Published: 01 June 2007
FIGURE 3 Changes in the Qori Kalis Glacier, Quelccaya Ice Cap, Peru, between 1978 ( A ) and 2002 ( B ). Loonie Thompson and colleagues have demonstrated similar glacial retreat in tropical locations around the world ( Thompson et al. 2006 ). P hoto credit L onnie T hompson
Journal Article
Journal: Geology
Published: 01 October 1977
Geology (1977) 5 (10): 600–604.
...J. H. Mercer; Oscar Palacios M. Abstract In the Cordillera Vilcanota and the vicinity of the Quelccaya ice cap, near lat 14°S in eastern Peru, the last glaciation culminated sometime between about 28,000 and 14,000 B.P. Alpine glaciers were then only about half as long as during an earlier...
Journal Article
Journal: Geology
Published: 18 September 2020
Geology (2021) 49 (2): 140–144.
... geological context is largely unclear. Here, we present reconstructions of Holocene glacier extents relative to today from the Quelccaya ice cap (Peru) and the Rwenzori Mountains (Uganda) based on measurements of in situ 14 C and 10 Be from recently exposed bedrock. Ice-extent histories are similar at both...
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Locations of bedrock samples (light-gray circles) from (A) the <span class="search-highlight">Quelccaya</span> <span class="search-highlight">ic</span>...
Published: 18 September 2020
Figure 1. Locations of bedrock samples (light-gray circles) from (A) the Quelccaya ice cap, Peru, and (B) the Rwenzori Mountains, Uganda. Green triangles show recently emerged ca. 5 ka plant remains ( Buffen et al., 2009 ).
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Figure 4. Left: Decadal mean percent biogenic silica (Bsi) for northern bas...
Published: 01 January 2001
Figure 4. Left: Decadal mean percent biogenic silica (Bsi) for northern basin of Lake Malawi from A.D. 1300 to present, expressed as deviations from mean value of 17.1%. Center and right: Decadal average profiles of oxygen isotopic composition (expressed as δ 18 O) of ice on Quelccaya ice cap, Peru
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Comparison of <span class="search-highlight">Quelccaya</span> (southeastern Peru) fluctuations (C, this study) to...
Published: 01 November 2012
) ( Placzek et al., 2009 ); Botuverá Cave (Brazil) δ 18 O values (E) ( Wang et al., 2007 ); and European Project for Ice Coring in Antarctica (EPICA) Dome C ice core deuterium values (F) ( EPICA community members, 2004 ). Quelccaya Ice Cap margin positions (C) are based on bracketing radiocarbon ages (see
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14 C and  10 Be concentrations with 1σ measurement uncertainties in recentl...
Published: 18 September 2020
Figure 2. 14 C and 10 Be concentrations with 1σ measurement uncertainties in recently exposed bedrock from the Quelccaya ice cap (Peru; red) and the Rwenzori Mountains (Uganda; blue). Concentrations were normalized by surface production rate, such that 10 Be concentrations are equivalent
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Comparison of Qori Kalis (Peru) extents to <span class="search-highlight">Quelccaya</span> Summit Dome <span class="search-highlight">ice</span> core n...
Published: 01 April 2014
at Quelccaya Ice Cap ( Vuille et al., 2012 ). F: δ 18 O values of authigenic calcite from Laguna Pumacocha, Peru ( Bird et al., 2011 ). More negative values are interpreted to indicate wetter conditions consistent with an intensified South American Monsoon System (SAMS) and southerly position of ITCZ.
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Inferred glacier histories compared to paleoclimate records. (A) Mean annua...
Published: 18 September 2020
; Cheng et al., 2013 ; Kanner et al., 2013 ). (F) African leaf wax hydrogen isotope δD from the Gulf of Aden (light blue), and Lake Challa (medium blue), and Lake Tanganyika (dark blue) ( Tierney and deMenocal, 2013 ) in East Africa. (G,H) Modeled exposure histories for (G) Quelccaya ice cap (Peru
Journal Article
Journal: Geology
Published: 01 May 2001
Geology (2001) 29 (5): 431–434.
... Oscillation events recorded in the stratigraphy of the tropical Quelccaya ice cap, Peru : Science , v. 226 p. 50 – 52 . Thompson , L.G. , Moseley-Thompson , E. , Bolzan , J.F. , and Koci , B.R. , 1985 , A 1500 year record of tropical precipitation in ice cores from the Quelccaya...
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Series: AAPG Studies in Geology
Published: 01 January 2001
DOI: 10.1306/St47737C6
EISBN: 9781629810669
... by a distinct wet (summer) and dry (winter) season. The glaciers are nourished during the wet season, and during the dry season a prominent dust layer is deposited on the ice surface. It often forms distinct visible layers such as those exposed along the vertical margin of the Quelccaya ice cap, pictured...
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Journal Article
Journal: Geology
Published: 01 January 2001
Geology (2001) 29 (1): 83–86.
...Figure 4. Left: Decadal mean percent biogenic silica (Bsi) for northern basin of Lake Malawi from A.D. 1300 to present, expressed as deviations from mean value of 17.1%. Center and right: Decadal average profiles of oxygen isotopic composition (expressed as δ 18 O) of ice on Quelccaya ice cap, Peru...
FIGURES | View All (4)
Journal Article
Journal: Geology
Published: 16 April 2019
Geology (2019) 47 (6): 550–554.
... al., 2014 ). Interestingly, some records from elsewhere around the globe do as well; an exceptionally well-dated glacier advance with bracketing radiocarbon ages reveals the culmination of a Quelccaya ice cap advance at ca. 12.5–12.4 ka, followed by glacier recession through the remainder on the YD...
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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP462.6
EISBN: 9781786203434
... the CCC was drilled); HIC, Huascarán ice cap; QIC, Quelccaya ice cap (where the QSC was drilled); and SIC, Sajama ice cap (where the SSC was drilled). ( c ) Map of tropical Pacific Basin region showing ENSO components along with the Intertropical Convergence Zone (ITCZ, heavy dashed line). Black filled...
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Journal Article
Published: 01 May 2004
Quarterly Journal of Engineering Geology and Hydrogeology (2004) 37 (2): 131–139.
... in the Pampa del Tamarugal, Chile . Journal of Hydrology , 53 1981 . 161 – 184 . Thompson , L.G. , Mosley-Thompson , E. , Dansgaard , W. , Grootes , P.M. , The Little Ice Age as recorded in the stratigraphy of the tropical Quelccaya ice cap . Science , 234 1986 . 361 – 364...
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