Jan Kramers

TL;DR: In this paper, high-precision isotope ratios of dissolved Mo in seawater from different ocean basins and depths show a homogeneous isotope composition (MOMO), as expected from its long ocean residence time (800 kyr).

TL;DR: A 50 kyr-long exceptionally well-dated and highly resolved stalagmite oxygen (δ 18O) and carbon isotope record from Sofular Cave in northwestern Turkey helps to further improve the dating of Greenland Interstadials (GI) 1, and 3-12.

TL;DR: In this paper, a combined solution for the two major terrestrial lead paradoxes has been sought, namely, the future paradox (upper crustal and upper mantle Pb isotope compositions plot in the future field in 207pb/204Pb vs. 206Pb/ 204Pb space) and the Th/U mantle paradox (The Th /U ratio of the upper mantle is ca. 2.6, whereas Pb values indicate a value of 3.8).

TL;DR: In this paper, the authors used MC-ICP-MS measurements to precisely determine molybdenum isotopic compositions using a Mo double spike prior to chemical purification, so that laboratory and instrumental mass fractionations are separated from natural mass-dependent fractionation.

TL;DR: Oxygen-isotope ratios of a stalagmite from Socotra Island in the Indian Ocean provide a record of changes in monsoon precipitation and climate for the time period from 42 to 55 thousand years before the present, with increased tropical precipitation associated with warm periods in the high northern latitudes.