10.6084/m9.figshare.3453215.v1
Matthew F. Gilbert
Matthew F.
Gilbert
Alastair H. F. Robertson
Alastair H. F.
Robertson
Field relations, geochemistry and origin of the Upper Cretaceous volcaniclastic Kannaviou Formation in western Cyprus: evidence
of a southerly Neotethyan volcanic arc
Geological Society of London
2016
west Cyprus
South Troodos Transform Fault Zone
Kannaviou Formation
Upper Cretaceous volcaniclastic Kannaviou Formation
electron microprobe analysis
tholeiitic fractionation trend
overlies ophiolitic serpentinite
Cretaceous northwards subduction
formation depositionally overlies Upper Cretaceous ophiolitic lavas
Suitable terrigenous source lithologies
Geology
2016-06-21 11:13:47
Dataset
https://geolsoc.figshare.com/articles/dataset/Field_relations_geochemistry_and_origin_of_the_Upper_Cretaceous_volcaniclastic_Kannaviou_Formation_in_western_Cyprus_evidence___of_a_southerly_Neotethyan_volcanic_arc/3453215
<p>The Kannaviou Formation (up to 750 m thick) accumulated in a deep-sea setting in west Cyprus during Campanian–Early(?) Maastrichtian
time. The formation depositionally overlies Upper Cretaceous ophiolitic lavas, including those associated with serpentinite-hosted
arcuate lineaments. The Kannaviou Formation locally overlies ophiolitic serpentinite, indicating that mantle rocks were exposed
on the seafloor prior to sediment deposition. Geochemical analyses of basalts that depositionally underlie the Kannaviou Formation,
within the arcuate lineaments, indicate close similarities with the boninitic lavas of the South Troodos Transform Fault Zone
in south Cyprus. Abundant volcanogenic and minor terrigenous and pelagic sedimentary rock material is present within the Kannaviou
Formation, while kaolinite is common within interbedded red clays. Suitable terrigenous source lithologies are present in
the deformed continental margin/deep-sea sedimentary rocks of the Mamonia Complex in west Cyprus. Whole-rock chemical analysis
of sandstones of predominantly volcaniclastic origin indicates an intermediate arc-like composition. Electron microprobe analysis
shows that glass is silicic, with a tholeiitic fractionation trend. Similar arc-like volcanic rocks of Late Cretaceous age
are exposed in the western Kyrenia (Girne) Range, north Cyprus. The provenance of the Kannaviou Formation provides evidence
of Late Cretaceous northwards subduction of the South Neotethys beneath a continental margin to the north.
</p>