William J. D'Andrea

TL;DR: This article used a transect of 32 lake surface sediments across large gradients of precipitation, relative humidity, and vegetation composition in the southwestern United States to study the natural factors affecting sedimentary δ D wax.

TL;DR: The results indicate that inferring precipitation D/H ratios on the basis of sedimentary leaf waxes is only viable when significant vegetation change is absent or can be accounted for isotopically.

TL;DR: High-resolution records of temperature over the past 5,600 y are presented based on alkenone unsaturation in sediments of two lakes in West Greenland, finding that major temperature changes in the past 4,500 y occurred abruptly, and were coeval in timing with the archaeological records of settlement and abandonment of the Saqqaq, Dorset, and Norse cultures.

TL;DR: In this paper, the authors review the techniques that have been used to estimate 14 C reservoir ages on the Tibetan Plateau and compile the published 14C reservoir ages to examine their spatial and temporal patterns and to assess the imposed chronological uncertainties.

TL;DR: In this article, the authors conducted a comprehensive phylogenetic and geochemical survey of lacustrine alkenone producers and found that the resulting profiles do not all align with traditional “marine” versus “coastal/lacustrine” alkone profiles.