@article {39,
	title = {Holocene glacier history of the Lago Argentino basin, Southern Patagonian Icefield},
	journal = {Quaternary Science Reviews},
	volume = {101},
	year = {2014},
	pages = {124-145},
	abstract = {We present new geomorphic, stratigraphic, and chronologic data for Holocene glacier fluctuations in the Lago Argentino basin on the eastern side of the southern Patagonian Andes. Chronologic control is based on 14C and surface-exposure 10Be dating. After the Lateglacial maximum at 13,000 cal yrs BP, the large ice lobes that filled the eastern reaches of Lago Argentino retreated and separated into individual outlet glaciers; this recession was interrupted only by a stillstand or minor readvance at 12,200 cal yrs BP. The eight largest of these individual outlet glaciers are, from north to south: Upsala, Agassiz, Onelli, Spegazzini, Mayo, Ameghino, Perito Moreno, and Grande (formerly Fr{\'\i}as). Holocene recession of Upsala Glacier exposed Brazo Cristina more than 10,115 {\textpm} 100 cal yrs BP, and reached inboard of the Holocene moraines in Agassiz Este Valley by 9205 {\textpm} 85 cal yrs BP; ice remained in an inboard position until 7730 {\textpm} 50 cal yrs BP. Several subsequent glacier readvances are well documented for the Upsala and Fr{\'\i}as glaciers. The Upsala Glacier readvanced at least seven times, the first being a relatively minor expansion {\textendash} documented only in stratigraphic sections {\textendash} between 7730 {\textpm} 50 and 7210 {\textpm} 45 cal yrs BP. The most extensive Holocene advances of Upsala Glacier resulted in the deposition of the Pearson 1 moraines and related landforms, which are divided into three systems. The Pearson 1a advance occurred about 6000{\textendash}5000 cal yrs BP and was followed by the slightly less-extensive Pearson 1b and 1c advances dated to 2500{\textendash}2000 and 1500{\textendash}1100 cal yrs BP, respectively. Subsequent advances of Upsala Glacier resulted in deposition of the Pearson 2 moraines and corresponding landforms, also separated into three systems, Pearson 2a, 2b, and 2c, constructed respectively at \~{}700, >400, and <300 cal yrs BP to the early 20th century. Similar advances are also recorded by moraine systems in front of Grande Glacier and herein separated into the Fr{\'\i}as 1 and Fr{\'\i}as 2a, 2b, and 2c. The Onelli and Ameghino glacier valleys also preserve older Holocene moraines. In the Agassiz, Spegazzini, and Mayo valleys, ice of the late-Holocene advances appears to have overridden landforms equivalent in age to Pearson 1. Perito Moreno Glacier is an extreme case in which ice of historical (Pearson 2c) advances overrode all older Holocene moraines. Based on the distribution and number of moraines preserved, we infer that the response to climate differed among the Lago Argentino outlet glaciers during the Holocene. This led us to examine the effects of climatic and non-climatic factors on individual glaciers. As a consequence, we detected an important effect of the valley geometry (hypsometry) on the timing and magnitude of glacier response to climate change. These results indicate that caution is needed in correlating moraines among glacier forefields without firm morpho-stratigraphic and age control. Finally, we note important similarities and differences between the overall moraine chronology in the Lago Argentino basin and that in other areas of southern South America and elsewhere in the Southern Hemisphere.},
	issn = {0277-3791},
	doi = {10.1016/j.quascirev.2014.06.026},
	url = {http://www.sciencedirect.com/science/article/pii/S0277379114002558},
	author = {Strelin, Jorge A. and Kaplan, Michael R. and Vandergoes, Marcus J. and Denton, George H. and Schaefer, Joerg M.}
}
@article {229,
	title = {Application of bacterial glycerol dialkyl glycerol tetraethers (GDGTs) to develop modern and past temperature estimates from New Zealand lakes},
	journal = {Organic Geochemistry},
	volume = {41},
	year = {2010},
	note = {id: 1955; PT: J; CT: 24th International Meeting on Organic Geochemistry; CY: SEP 06-11, 2009; CL: Bremen, GERMANY; UT: WOS:000282671500040},
	pages = {1060-1066},
	abstract = {Branched isoalkyl glycerol dialkyl glycerol tetraethers (GDGTs) of bacterial origin have been found in high abundance in both modern and glacial sediments of New Zealand South Island freshwater lakes covering a wide range of altitude (101-2000 m). Like isoprenoid GDGTs of archaeal origin, they provide excellent potential for temperature assessment. For this study, their distribution patterns (MBT, methylation ratio and CBT, cyclisation ratio of branched GDGTs) have been successfully used to develop an initial temperature calibration for the study area and to provide preliminary (palaeo)environmental interpretations. MBT data from modern lake sediments correlate well with measured annual air temperature (R(2) 0 74), enabling a regional calibration for reconstructing palaeotemperatures for fossil samples. MBT-derived palaeotemperatures for Alpine Lake, calibrated against mean annual temperature, were determined for the Last Glacial during an early cold phase (between 29,000 and 26,000 years BP) and for later less cold phases (between 23,000 and 18,000 years BP). Compared with the modern temperature regime, the MBT data indicate a decrease of ca 56 and 2 8 degrees C respectively, during this time Modern and past MBT-derived temperatures correlate with chironomid-based temperature reconstructions in the area Archaeal GDGTs, commonly used for the TEX(86) index, are abundant in fossil sediments (Alpine Lake) but scarce in modern sediments, hindering a new local calibration for this palaeotemperature proxy. (C) 2010 Elsevier Ltd All rights reserved},
	issn = {0146-6380},
	doi = {10.1016/j.orggeochem.2010.03.004},
	author = {Zink, Klaus- G. and Vandergoes, Marcus J. and Mangelsdorf, Kai and Dieffenbacher-Krall, Ann C. and Schwark, Lorenz}
}
