@article {1846,
	title = {Intcal09 and Marine09 Radiocarbon Age Calibration Curves, 0-50,000 Years Cal Bp Rid F-4952-2011 Rid B-7298-2008},
	journal = {Radiocarbon},
	volume = {51},
	year = {2009},
	note = {id: 1983; PT: J; UT: WOS:000274407500002},
	month = {2009},
	pages = {1111-1150},
	abstract = {The IntCal04 and Marine04 radiocarbon calibration curves have been updated from 12 cal kBP (cal kBP is here defined as thousands of calibrated years before AD 1950), and extended to 50 cal kBP, utilizing newly available data sets that meet the IntCal Working Group criteria for pristine corals and other carbonates and for quantification of uncertainty in both the (14)C and calendar timescales as established in 2002. No change was made to the curves from 0-12 cal kBP. The curves were constructed using a Markov chain Monte Carlo (MCMC) implementation of the random walk model used for IntCal04 and Marine04. The new curves were ratified at the 20th International Radiocarbon Conference in June 2009 and; ire available in the Supplemental Material at www.radiocarbon.org.},
	isbn = {0033-8222},
	author = {Reimer, P. J. and Baillie, M. G. L. and Bard, E. and Bayliss, A. and Beck, J. W. and Blackwell, P. G. and Ramsey, C. Bronk and Buck, C. E. and Burr, G. S. and Edwards, R. L. and Friedrich, M. and Grootes, P. M. and Guilderson, T. P. and Hajdas, I. and Heaton, T. J. and Hogg, A. G. and Hughen, K. A. and Kaiser, K. F. and Kromer, B. and McCormac, F. G. and Manning, S. W. and Reimer, R. W. and Richards, D. A. and Southon, J. R. and Talamo, S. and Turney, C. S. M. and van der Plicht, J. and Weyhenmeye, C. E.}
}
@article {421,
	title = {Quaternary glaciation and hydrologic variation in the South American tropics as reconstructed from the Lake Titicaca drilling project},
	journal = {Quaternary Research},
	volume = {68},
	year = {2007},
	note = {id: 841; 227AJ Times Cited:9 Cited References Count:63Y},
	pages = {410-420},
	abstract = {A 136-m-long drill core of sediments was recovered from tropical high-attitude Lake Titicaca, Bolivia-Peru, enabling a reconstruction of past climate that spans four cycles of regional glacial advance and retreat and that is estimated to extend continuously over the last 370,000 yr. Within the errors of the age model, the periods of regional glacial advance and retreat are concordant respectively with global glacial and interglacial stages. Periods of ice advance in the southern tropical Andes generally were periods of positive water balance, as evidenced by deeper and fresher conditions in Lake Titicaca. Conversely, reduced glaciation occurred during periods of negative water balance and shallow closed-basin conditions in the lake. The apparent coincidence of positive water balance of Lake Titicaca and glacial growth in the adjacent Andes with Northern Hemisphere ice sheet expansion implies that regional water balance and glacial mass balance are strongly influenced by global-scale temperature changes, as well as by precessional forcing of the South American summer monsoon. (c) 2007 University of Washington. All rights reserved.},
	issn = {0033-5894},
	doi = {10.1016/J.Yqres.2007.07.008},
	author = {Fritz, S. C. and Baker, P. A. and Seltzer, G. O. and Ballantyne, A. and Tapia, P. and Cheng, H. and Edwards, R. L.}
}
