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DANELIAN, TANIEL, ROBERTSON, ALASTAIR H. F. (2001) Neotethyan evolution of eastern Greece (Pagondas Mélange, Evia island) inferred from radiolarian biostratigraphy and the geochemistry of associated extrusive rocks. Geological Magazine, 138 (3) 345-363 doi:10.1017/s0016756801005337

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Reference TypeJournal (article/letter/editorial)
TitleNeotethyan evolution of eastern Greece (Pagondas Mélange, Evia island) inferred from radiolarian biostratigraphy and the geochemistry of associated extrusive rocks
JournalGeological Magazine
AuthorsDANELIAN, TANIELAuthor
ROBERTSON, ALASTAIR H. F.Author
Year2001 (May)Volume138
Issue3
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756801005337Search in ResearchGate
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Mindat Ref. ID258674Long-form Identifiermindat:1:5:258674:2
GUID0
Full ReferenceDANELIAN, TANIEL, ROBERTSON, ALASTAIR H. F. (2001) Neotethyan evolution of eastern Greece (Pagondas Mélange, Evia island) inferred from radiolarian biostratigraphy and the geochemistry of associated extrusive rocks. Geological Magazine, 138 (3) 345-363 doi:10.1017/s0016756801005337
Plain TextDANELIAN, TANIEL, ROBERTSON, ALASTAIR H. F. (2001) Neotethyan evolution of eastern Greece (Pagondas Mélange, Evia island) inferred from radiolarian biostratigraphy and the geochemistry of associated extrusive rocks. Geological Magazine, 138 (3) 345-363 doi:10.1017/s0016756801005337
In(2001, May) Geological Magazine Vol. 138 (3) Cambridge University Press (CUP)
Abstract/NotesThis paper presents new radiolarian biostratigraphic and igneous/metamorphic geochemical
data for a Mesozoic volcanic–sedimentary mélange on the island of Evia (Euboea or Evvoia), eastern
Greece. This mélange includes dismembered thrust sheets and blocks of radiolarian chert and basalt.
Biostratigraphic age data show that radiolarites interbedded with basalt-derived, coarse clastic sediments
near the base of a coherent succession were deposited in Middle and Late Triassic time (Late
Ladinian–Carnian, Norian?). Geochemical evidence shows that associated extrusive rocks, of inferred
Triassic age, range from ‘enriched’ alkaline basalts, to ‘transitional’ basalts, and more ‘depleted’ mid-ocean
ridge-type basalts. Amphibolite facies meta-basalts from the metamorphic sole of the over-riding
Evia ophiolite exhibit similar chemical compositions. Both the basalts and the meta-basalts commonly
show an apparent subduction-related influence (e.g. relative Nb depletion) that may have been inherited
from a previous subduction event in the region. The basalts are interpreted to have erupted during
Middle–Late Triassic time (Late Ladinian–Carnian), related to initial opening of a Neotethyan ocean
basin adjacent to a rifted continental margin. Radiolarites located stratigraphically higher in the coherent
succession studied are dated as Middle Jurassic (Late Bathonian–Early Callovian). Similar-aged
radiolarites are depositionally associated with ophiolitic rocks (including boninites), in some other areas
of Greece and Albania. During initial ocean basin closure (Bajocian–Bathonian) the adjacent shallow-water
carbonate platform (Pelagonian zone) disintegrated to form basins in which siliceous sediments
were deposited and highs on which shallow-water carbonates continued to accumulate. This facies differentiation
is seen as a response to crustal flexure as the Neotethyan ocean began to close. The over-riding
Pagondas Mélange and other similar units in the region are interpreted as accretionary prisms related to
subduction of Neotethyan oceanic crust in Middle–Late Jurassic time. These mélanges were emplaced,
probably diachronously during Oxfordian–Kimmeridgian time, when the passive margin collapsed,
creating a foredeep ahead of advancing thrust sheets of mélange and ophiolites.

Locality Pages

LocalityCitation Details
Euboea, Central Greece, Greece

See Also

These are possibly similar items as determined by title/reference text matching only.

Danelian, Taniel, Robertson, Alastair H. F., Dimitriadis, Sarantis (1996) Age and significance of radiolarian sediments within basic extrusives of the marginal basin Guevgueli Ophiolite (northern Greece) Geological Magazine, 133 (2) 127-136 doi:10.1017/s0016756800008645
Jones, Gregory, de Wever, Patrick, Robertson, Alastair H. F. (1992) Significance of radiolarian age data to the Mesozoic tectoni and sedimentary evolution of the northern Pindos Mountains, Greece. Geological Magazine, 129 (4) 385-400 doi:10.1017/s0016756800019488
Al-Riyami, Khalil K., Danelian, Taniel, Robertson, Alastair H. F. (2002) Radiolarian biochronology of Mesozoic deep-water successions in NW Syria and Cyprus: implications for south-Tethyan evolution. Terra Nova, 14 (4). 271-280 doi:10.1046/j.1365-3121.2002.00418.x
Robertson, A. H. F. (1991) Origin and emplacement of an inferred late Jurassic subduction-accretion complex, Euboea, eastern Greece. Geological Magazine, 128 (1) 27-41 doi:10.1017/s0016756800018021
Danelian, Taniel, Robertson, Alastair H.F. (1997) Radiolarian evidence for the stratigraphy and palaeo-oceanography of the deep-water passive margin of the Indian Plate (Karamba Formation, Indus Suture Zone, Ladakh Himalaya). Marine Micropaleontology, 30. 171-195 doi:10.1016/s0377-8398(96)00018-7
(1908) Radiolarian Rocks of the Culm Measures, Devonshire. Geological Magazine, S. 5 Vol. 5 (3) 138 doi:10.1017/s001675680013732x
KOKKALAS, S. (2001) Tectonic evolution and stress field of the Kymi-Aliveri basin, Evia island, Greece. Bulletin of the Geological Society of Greece, 34 (1) 243 doi:10.12681/bgsg.17019
Meunier, Mathias, Danelian, Taniel (2024) New middle Eocene radiolarian species (Rhizaria, Polycystinea) from Blake Nose, subtropical western North Atlantic Ocean. Journal of Paleontology, 98 (3). doi:10.1017/jpa.2024.7
Clift, Peter D., Robertson, Alastair H. F. (1990) A Cretaceous Neo-Tethyan carbonate margin in Argolis, southern Greece. Geological Magazine, 127 (4) 299-308 doi:10.1017/s0016756800014862
DANELIAN, Taniel; MONNET, Claude (2025) Early Palaeozoic radiolarian macroevolutionary dynamics and possible relation to global change. Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 116 (3). doi:10.1017/s1755691025100947
Ma, Qiangfen, Feng, Qinglai, Caridroit, Martial, Danelian, Taniel, Zhang, Ning (2016) Integrated radiolarian and conodont biostratigraphy of the Middle Permian Gufeng Formation (South China). Comptes Rendus Palevol, 15. 453-459 doi:10.1016/j.crpv.2016.02.001
 
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