1. Volcanology/petrology of Nisyros volcano, Aegean arc, Greece (With Jelle deBoer and Jim Gutmann, Wesleyan University; Lorella Francalanci, Univ. of Florence, Italy). Current studies focus on the isotopic signature of the youngest rocks and the details of magma mixing prior to the large explosive eruptions that resulted in the formation of the central caldera. We have ongoing efforts in modelling the thermal state of the magma chamber during magma mixing.
THE 1999 CEV FIELDWORKSHOP ON KOS / YALI / NISYROS WAS GREAT FUN - SEE PICTURES AT BOTTOM OF PAGE.

           Surges in the upper caldera pumices,
       coastal section near Pali.

Wesleyan University BA thesis students: Ellen Limburg '85, Sandy Wyman'86,  Cheryl Gansecki '90, Clair Hruby '98. Lisa Lodise '87 (MA)

Publications:
V-4. Limburg*, E. and Varekamp, J.C., 1991: Young Pumice deposits on Nisyros, Greece. Bull. of Volc. 54,  68-77.
V-5. Varekamp, J.C., 1992: Some remarks on volcanic vent evolution during plinian eruptions. J. Volc. Geotherm. Res. 54, 309-318.
VP-9. Francalanci, L., Varekamp, J.C. et al. 1995: Crystal retention, fractionation and crustal assimilation in a convecting magma chamber, Nisyros volcano, Greece. Bull. Volcanol. 56, 601-620.
VP-10. Varekamp, J.C., Keller, J. and Vougioukalakis, G., 1999: A volcanologic/petrologic summary and field guide to Nisyros (CEV field workshop), pp.15.
Nisyros on the WEB


View from Kos side of Nisyros with caldera outline and post caldera domes.
 
 
 


Mafic magmatic enclave in the Nikia lavas - note quench rims
 


 
 

Sr-Nd isotope graph of Nisyros and Santorini lavas and pumices
 

Relations between mafic inclusions and host dacites at Nisyros

Sr - K2O graph of Nisyros caldera sequence (pumices, rhyodacitic lava flows)
and the mafic magmatic enclaves


Differences between Nisyros and Santorini
 
 
 

The monastery at Mandraki on top of the hyaloclastite sequence
 
 
 

Participants in the summer 1999 CEV-IUGG-IAVCEI fieldworkshop on the Kos plateau layer