Τίτλος:
Spatio-temporal evolution of the Christiana-Santorini-Kolumbo volcanic
field, Aegean Sea
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The Christiana-Santorini-Kolumbo volcanic field (CSKVF) in the Aegean
Sea is one of the most active volcano-tectonic lineaments in Europe.
Santorini has been an iconic site in volcanology and archaeology since
the 19th century, and the onshore volcanic products of Santorini are one
of the best-studied volcanic sequences worldwide. However, little is
known about the chronology of volcanic activity of the adjacent
submarine Kolumbo volcano, and even less is known about the Christiana
volcanic island. In this study, we exploit a dense array of
high-resolution marine seismic reflection profiles to link the marine
stratigraphy to onshore volcanic sequences and present the first
consistent chronological framework for the CSKVF, enabling a detailed
reconstruction of the evolution of the volcanic rift system in time and
space. We identify four main phases of volcanic activity, which
initiated in the Pliocene with the formation of the Christiana volcano
(phase 1). The formation of the current southwest-northeast-trending
rift system (phase 2) was associated with the evolution of two distinct
volcanic centers, the newly discovered Poseidon center and the early
Kolumbo volcano. Phase 3 saw a period of widespread volcanic activity
throughout the entire rift. The ongoing phase 4 is confined to the
Santorini caldera and Kolumbo volcano. Our study highlights the
fundamental tectonic control on magma emplacement and shows that the
CSKVF evolved from a volcanic field with local centers that matured only
recently to form the vast Santorini edifice.
Συγγραφείς:
Preine, J.
Karstens, J.
Huebscher, C.
Nomikou, P. and
Schmid, F.
Crutchley, G. J.
Druitt, T. H.
Papanikolaou, D.
Περιοδικό:
Geologie Mediterraneenne
Εκδότης:
GEOLOGICAL SOC AMER, INC
