Magmatic and hydrothermal activity in Lena Trough, Arctic Ocean
Article first published online: 19 OCT 2006
©2001. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 82, Issue 17, pages 193–198, 24 April 2001
How to Cite
2001), Magmatic and hydrothermal activity in Lena Trough, Arctic Ocean, Eos Trans. AGU, 82(17), 193–198, doi:10.1029/01EO00101., , , and (
- Issue published online: 19 OCT 2006
- Article first published online: 19 OCT 2006
The nature of magma generation, crustal construction, and hydrothermalism beneath ocean ridges at extremely low spreading rates is currently a hot topic in marine Earth sciences. Partial melting (10–20%) and magma mixing experienced by most mid-ocean ridge basalts hampers our understanding of the mantle and melting processes. This is because the lowest-degree partial melts (containing essentially all the incompatible trace elements) and their still-fertile peridotite residues are never observed; their compositions can only be inferred. Thermal models predict a sharp drop in partial melting at spreading rates significantly under 16 mm/yr (full rate) [Reid and Jackson, 1981].