News

Ceccato, A.; Menegon, L.; Warren, C.J. and Halton, A.M. (2020). Structural and metamorphic inheritance controls strain partitioning during orogenic shortening (Kalak Nappe Complex, Norwegian Caledonides). Journal of Structural Geology (Early access).

This new paper just published online in the journal Scientific Reports looks at evidence for thinning of the lithosphere in East Asian during the Mesozoic. By looking at the geochemistry of a set of dated volcanic samples from Russia, Mongolia and North China the timing of lithospheric thinning and the duration of this process can be studied.
The results suggest a switch from a metasomatised subcontinental lithospheric mantle to a predominantly asthenospheric magma source occurred at ~107Ma in Mongolia and North China while the switch occurred later, at ~85Ma in eastern Russia

A new paper availible on line now in Gondwana Research looking at the petrogenesis of Mesozoic lavas from Monglia combines Ar-Ar dating, major and trace element chemistry, and Sr-Nd-Pb-Hf isotopic data. The combination of data sets on several different sets of lavas allowed several tectonic models to be proposed and combining the new models proposed with previsou evidence supports the sugestion that the Mongol-Okhotsk Ocean closed with double-sided subduction....

Read all the details:

A new paper has just been published containing Ar-Ar dating from the OU Ar-Ar and Noble Gas Lab which looks at the lawsonite-glaucophane blueschists of Elba Island (Italy).

Congratulations to Simone Cogliati who has successfully defended his PhD thesis entitled "Noble gas analysis of volcanic glass particles: a better understanding of volcano degassing and implications for Ar/Ar dating of eruptions".

Wishing you success with the next stage of your career 

Simone Cogliati submitted his PhD thesis titled: "Noble gas analysis of volcanic glass particles: a better understanding of volcano degassing and implications for Ar/Ar dating of eruptions" today (24/5/19)!

Moles, J.D., McGarvie, D., Stevenson, J.A., Sherlock, S.C., Abbott, P.M., Jenner, F.E. & Halton, A..M. (2019) InPress, Geology. Widespread tephra dispersal and ignimbrite emplacement from a subglacial volcano (Torfajökull, Iceland)

Many congratulations to PhD student Jon Moles who succcessfully defended his thesis last week.

https://www.open.ac.uk/science/environment-earth-ecosystems/phd-studentships/how-apply

24 PhD projects are currently listed on the School website covering a wide range of topics, reflecting the broad research interests of the school, many of which are assocaited with the CENTA 2 Doctoral Training Partnership

These include one project involving Ar-Ar dating and Noble Gas Studies:

Skipton, D.R, Warren, C.J. and Hanke, F. 2018. Chemical Geology. Numerical modeling of P-T, time and grain-size controls on Ar diffusion in biotite: An aide to interpreting ⁴⁰Ar/³⁹Ar ages. Vol 496, pp.14-24.