The Earth as a planetary system has experienced significant change since its formation c.
4.54 Gyr ago. Some of these changes have been gradual, such as secular cooling of the …

We tested the accuracy of trace element discrimination diagrams for basalts using new
datasets from two petrological databases, PetDB and GEOROC. Both binary and ternary …

We present global and regional correlations between whole-rock values of Sr/Y and La/Yb
and crustal thickness for intermediate rocks from modern subduction-related magmatic arcs …

Much of our understanding of ocean ridges has come from the collection and analysis of
glasses recovered from ridge axes. However, applying the resulting methodologies to …

Using Geochemical Data: Evaluation, Presentation, Interpretation Page 1 Page 2 Using
Geochemical Data: Evaluation, Presentation, Interpretation Page 3 Other titles in the series An …

Students of a phenomenon as common but complex as andesite genesis often are
overwhelmed by, or overlook, the volume and diversity of relevant information. Thus there is …

A map of the ocean basins (Fig. 5.1) shows that their most conspicuous topographic feature
is the system of mid-oceanic ridges, the crests of which rise on average 1000-3000 m above …

The graywackes of Paleozoic turbidite sequences of eastern Australia show a large variation
in their trace element characteristics, which reflect distinct provenance types and tectonic …

The recently proposed [1] Thsingle bondHfsingle bondTa diagram is shown in the light of
considerable additional data to be a sensitive indicator of the tectonic environment in which …

Two geochemical proxies are particularly important for the identification and classification of
oceanic basalts: the Th–Nb proxy for crustal input and hence for demonstrating an oceanic …