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7.2. Mammonia Succession 1 (Volcaniclastics Kannaviou Fm (Interp…
7.2.
Mammonia Succession 1
Volcaniclastics Kannaviou Fm
SW of Kannaviou
Interp
Andesitic-silicic volcaniclastics
Source: Subduction-related volcanism ? (silicic)
Ashfall deposit ? porous, fine
Volcaniclastic description
V fine grained, porous, well sorted
Light coloured: whitish mins, grey micas
Mature, v siliceous volcanics
Source?
Tentative: Kyrenian cont arc margin
supported by volcanic glass geochemistry
Problem: Volcanics in Kyrenia = younger
Likely: part of Kyrenia that
= source is not exposed atm?
Age ≈ 80 Ma
Lack of bedding?
Ash reworked in channels on seafloor
Kannaviou Fm
Chalk
Mud
Lava
Kannaviou
Source areas
underside Troodos
Mammonia shedding
outwith Cyprus ?
Kathakas Melange
Mammonia formed on edge of Tethys (passive margin)
Signif
Represents tectonic contact btwn Mammonia & Troodos
Link Troodos & Mammonia (source incl. Mammonia)
Marked by debris flow w material from both terranes
Troodos ophiolite uplifted
--> Kathakas comprises material from both terranes
Succession
Chalk overlies Kannaviou, above debris flow deposits
Kathakas Melange
= debris flow
poorly sorted mix of lithologies from Troodos & Mammonia