New evidence for Late Cretaceous plume-related seamounts in the Middle East sector of the Neo-Tethys: Constraints from geochemistry, petrology, and mineral chemistry of the magmatic rocks from the western Durkan Complex (Makran Accretionary Prism, SE Iran)

Lithos ◽  
2021 ◽  
pp. 106228
Author(s):  
Edoardo Barbero ◽  
Federica Zaccarini ◽  
Morteza Delavari ◽  
Asghar Dolati ◽  
Emilio Saccani ◽  
...  
Keyword(s):  
Middle East ◽  
Late Cretaceous ◽  
Accretionary Prism ◽  
Mineral Chemistry ◽  
Magmatic Rocks ◽  
New Evidence

scholarly journals The western Durkan Complex (Makran Accretionary Prism, SE Iran): A Late Cretaceous tectonically disrupted seamounts chain and its role in controlling deformation style

2021 ◽  
Vol 12 (3) ◽  
pp. 101106
Author(s):  
Edoardo Barbero ◽  
Luca Pandolfi ◽  
Morteza Delavari ◽  
Asghar Dolati ◽  
Emilio Saccani ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Accretionary Prism

scholarly journals A new small deinonychosaur (Dinosauria: Theropoda) from the Late Cretaceous of Patagônia, Argentina

2011 ◽  
Vol 83 (1) ◽  
pp. 109-116 ◽  
Author(s):  
Juan D. Porfiri ◽  
Jorge O. Calvo ◽  
Domenica dos Santos
Keyword(s):  
Late Cretaceous ◽  
Taxonomic Diversity ◽  
South American ◽  
New Material ◽  
New Evidence

Here we report on a new small deinonychosaurian theropod, Pamparaptor micros gen. et sp. nov., from the Late Cretaceous of Patagônia, Argentina. Pamparaptor micros exhibits a pedal structure previously unknown among South Américan deinonychosaurians. The new material provides new evidence about the morphology and taxonomic diversity of Patagônian deinonychosaurs. Pamparaptor is the smaller non-avialae Patagônian deinonychosaur, probably with about 0.50-0.70 meters, long. The pedal construction resembles, that of Troodontid or basal Dromaeosaurids. Nevertheless, up to now, we considered Pamparaptor a peculiar Patagônian Dromaeosaurid with troodontid-like pes.

Mixed siliceous-carbonate sedimentation in a Late Cretaceous epeiric sea: New evidence from the eastern Russian Platform

2018 ◽  
Vol 289 (3) ◽  
pp. 237-248 ◽  
Author(s):  
Svetlana O. Zorina ◽  
Lenar S. Khabipyanov ◽  
Nadezhda I. Afanasieva ◽  
Natalia V. Sokerina ◽  
Igor A. Perovskiy ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Russian Platform ◽  
Carbonate Sedimentation ◽  
Epeiric Sea ◽  
New Evidence

Late Cretaceous phymosomatids and the true identity of Cidarites granulosus Goldfuss, 1829 (Echinoidea, Phymosomatoida)

Zootaxa ◽  
2012 ◽  
Vol 3271 (1) ◽  
pp. 17 ◽  
Author(s):  
NILS SCHLÜTER ◽  
MANFRED KUTSCHER ◽  
ANDREW B. SMITH ◽  
JOHN W. M. JAGT ◽  
JACKIE A. LEES
Keyword(s):  
Middle East ◽  
Late Cretaceous ◽  
The Family ◽  
Lower Maastrichtian ◽  
The Common

A revision of Late Cretaceous species of the common regular echinoid genus Phymosoma Haime in d’Archiac & Haime,1853 has revealed that Cidarites granulosus Goldfuss, 1829 has generally been misinterpreted in the literature. The typespecimen of this species is undoubtedly conspecific with material from the lower Maastrichtian of Rügen, northeast Ger-many. What authors have referred to as Phymosoma granulosum in northern temperate (boreal) regions of western Europeand in the Middle East in fact represents an undescribed form which we here name Phymosoma ravni sp. nov., which dif-fers from Cidarites granulosus in having better-developed biserial pore zones adapically, proportionally larger mamelonson primary tubercles, a flush peristome, and stout, non-facetted primary spines. The proper placement of Cidarites granulosus within the family Phymosomatidae Pomel, 1883 is ambiguous; it appears to be most closely related to Phymosoma.

Timing of subduction zone metamorphism during the formation and emplacement of Troodos and Baer–Bassit ophiolites: insights from 40Ar–39Ar geochronology

2007 ◽  
Vol 144 (5) ◽  
pp. 797-810 ◽  
Author(s):  
GAVIN HEUNG-NGAI CHAN ◽  
JOHN MALPAS ◽  
COSTAS XENOPHONTOS ◽  
CHING-HUA LO
Keyword(s):  
Subduction Zone ◽  
Late Cretaceous ◽  
Accretionary Prism ◽  
Passive Margin ◽  
Metamorphic Rocks ◽  
Metamorphic Complex ◽  
Troodos Ophiolite ◽  
Crustal Thinning ◽  
Step Heating ◽  
Short Time

The Troodos ophiolite in Cyprus and Baer–Bassit ophiolite in Syria together form part of the Tethyan ophiolite belt. They were generated in a supra-subduction zone setting in Late Cretaceous times. As with many of the ophiolite occurrences in this belt, the sequences are closely associated with tectonic ‘coloured mélange’ zones, which contain, among a variety of lithologies, metre- to kilometre-size blocks of metamorphic rocks. Precise 40Ar–39Ar laser step-heating experiments performed on four amphibolites from SW Cyprus and six from NW Syria, yield plateau ages ranging from 75.7±0.3 Ma to 88.9±0.8 Ma in Cyprus and 71.7±0.5 to 88.4±0.4 Ma in Syria. The older limits of these time spans are coeval with the age of the formation of the associated ophiolites. Unlike other metamorphic sole rocks which seem to form in relatively short time spans, these metamorphic rocks found in Cyprus and Syria are interpreted to have formed in Late Cretaceous times by accretion below the overriding Troodos and Baer–Bassit crust for a period of 15–18 Ma. The metamorphic complexes were exhumed by extension and crustal thinning associated with subduction roll-back and the rotation of the overriding plate until the cessation of subduction in Maastrichtian times. In Cyprus, the exhumed metamorphic complex was incorporated into an accretionary prism constructed primarily of the collapsed Mamonia passive margin sequence intercalated with rocks of the Troodos ophiolite during plate collision in the Maastrichtian. Concomitantly, in Syria, the Baer–Bassit ophiolite and subcreted metamorphic complex were emplaced onto the Arabian passive margin and fragmented into blocks and knockers, forming the Baer–Bassit mélange.

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