Precambrian marine carbonate isotope database: Version 1.1

Questions regarding Precambrian sulfur isotope fractionation.

The discovery by Farquhar et al. (1) of mass-independent isotope fractionation of S and S in rocks formed more than ;2 billion years ago (Ga), but not in younger rocks, has boosted the theory postulating a dramatic change from an anoxic to an oxygen-rich atmosphere about 2 Ga. That is because the only known natural process that may cause mass-independent fractionation of both S and S involves a...

Comparison between Holocene and Marine Isotope Stage-11 sea-level histories

Uniform climate development between the subtropical and subpolar Northeast Atlantic across marine isotope stage 11

1 Leibniz Institute of Marine Sciences, Wischhofstr. 1–3, 24148 Kiel, Germany 2 Academy of Sciences, Humanities and Literature, Geschwister-Scholl-Str. 2, 55131 Mainz, Germany 3 University of Bremen, Postfach 330440, 28334 Bremen, Germany Received: 12 March – Accepted: 18 March – Published: 9 April 2008 Correspondence to: J. P. Helmke ([email protected]) Published by Copernicus Publications...

Glacier advance during Marine Isotope Stage 11 in the McMurdo Dry Valleys of Antarctica

We mapped six distinct glacial moraines alongside Stocking Glacier in the McMurdo Dry Valleys, Antarctica. Stocking Glacier is one of several alpine glaciers in the Dry Valleys fringed by multiple cold-based drop moraines. To determine the age of the outermost moraine, we collected 10 boulders of Ferrar Dolerite along the crest of the moraine and analyzed mineral separates of pyroxene for cosmo...

Global database of paleocurrent trends through the Phanerozoic and Precambrian

Paleocurrents are sedimentological features contained in all sedimentary deposits, enabling the direction of movement of the sediment and the containing fluid at the time of deposition to be determined. This database contains paleocurrent directions and other relevant associated data from published sources and theses and dissertations for the entire Phanerozoic and Precambrian for all continent...