Triassic pelagic deposits of Timor: palaeogeographic and sea-level implications

Martini, Rossana; Zaninetti, Louisette; Villeneuve, Michel; Cornée, Jean‐Jacques; Krystyn, Leopold; Cirilli, Simonetta; Wever, Patrick De; Dumitrică, Paulian; Harsolumakso, Agus Handoyo

doi:10.1016/s0031-0182(00)00062-6

Cited by 44 publications

(38 citation statements)

References 27 publications

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“…We use the Raup-Crick coefficient, which is calculated using a 'Monte-Carlo' randomization procedure to determine how often a comparable level of similarity occurs in 200 randomly replicated samples of the same size 32 . Forty-five late Carnian-early Norian diagnostic morphospecies were selected 5,6,7,22 , and their presence-absence in northwestern and eastern Australia (Onslow and Ipswich), East Africa 26 , East India 33,34 , Circum-Mediterranean area, Europe, United States and Timor 35 was checked (Supplementary Table S1). Some species have been grouped, such as Alisporites/Falcisporites and Limatulasporites fossulatus/limatulus complex.…”

Section: Methodsmentioning

confidence: 99%

A new Late Triasssic phytogeographical scenario in westernmost Gondwana

Césari

Colombi

2013

Nat Commun

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Floral provincialism within the Southern Hemisphere during the Late Triassic (230 Ma) is characterized by the Ipswich and Onslow provinces, recognized originally in eastern Gondwana. However, new palynological assemblages from the Ischigualasto Formation, northwestern Argentina (231-225 Ma), change the phytogeographic interpretation for the Carnian-Norian in the westernmost Gondwana, which was previously considered part of the southern floral Ipswich province. Here we show the presence of diagnostic Euramerican species within assemblages dominated by Gondwanan taxa that allows us to refer the palynofloras to the Onslow province. Our new data extend the Onslow floral belt, previously recognized from the western edge of Tethys to Timor, to the western margin of South America. This has implications for palaeophytogeography, palaeoclimate reconstructions and the palaeoecology of a Triassic ecosystem, which has yielded significant vertebrate remains and is regarded important in the early evolution of groups such as the Dinosauria.

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Section: Methodsmentioning

confidence: 99%

A new Late Triasssic phytogeographical scenario in westernmost Gondwana

Césari

Colombi

2013

Nat Commun

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“…Charlton 2001). The occurrence of Rhabdoceras suessi in West Timor, within an extremely rich Tethyan-type ammonoid assemblage along with the planktonic hydrozoan Heterastridium, is in a Hallstatt-type condensed limestone, occurring as isolated blocks in the so-called Allochthonous Series of Sonnebait, which is included in the tectonic mélange of the accretionary prism of the Banda Arc (Martini et al 2000). The allochthonous pelagic Triassic of Timor, which facially is definitely distinct from that of the Australian margin, represents obducted remnants of Hallstatt-topped seamounts littered in the south-eastern Tethys Seaway, where it reached the Panthalassa Ocean.…”

Section: Alpine-himalayan-indonesian Orogenic Beltmentioning

confidence: 99%

First record ofRhabdoceras suessi(Ammonoidea, Late Triassic) from the Transylvanian Triassic Series of the Eastern Carpathians (Romania) and a review of its biochronology, paleobiogeography and paleoecology

Grădinaru¹,

Sobolev²

2010

Central European Geology

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The occurrence of the heteromorphic ammonoid Rhabdoceras suessi Hauer, 1860, is recorded for the first time in the Upper Triassic limestone of the Timon-Ciungi olistolith in the Raràu Syncline, Eastern Carpathians. A single specimen of Rhabdoceras suessi co-occurs with Monotis (Monotis) salinaria that constrains its occurrence here to the Upper Norian (Sevatian 1). It is the only known heteromorphic ammonoid in the Upper Triassic of the Romanian Carpathians. Rhabdoceras suessi is a cosmopolitan species widely recorded in low and mid-paleolatitude faunas. It ranges from the Late Norian to the Rhaetian and is suitable for high-resolution worldwide correlations only when it co-occurs with shorter-ranging choristoceratids, monotid bivalves, or the hydrozoan Heterastridium. Formerly considered as the index fossil for the Upper Norian (Sevatian) Suessi Zone, by the latest 1970s this species lost its key biochronologic status among Late Triassic ammonoids, and it generated a controversy in the 1980s concerning the status of the Rhaetian stage. New stratigraphic data from North America and Europe in the subsequent decades resulted in a revised ammonoid biostratigraphy for the uppermost Triassic, the Rhaetian being reinstalled as the topmost stage in the current standard timescale of the Triassic. The geographic distribution of Rhabdoceras is compiled from published worldwide records, and its paleobiogeography and paleoecology are discussed. Central European Geology, Vol. 53/2-3, pp. 261-309 (2010) DOI: 10.1556/CEuGeol.53.2010 First While examining the fossils collected by the senior author in an old quarry in limestone of the Timon-Ciungi olistolith, the junior author, whose aim was to study the nautiloids, identified a fragment of a specimen of Rhabdoceras suessi Hauer, 1860, in the material. Consequently the purpose of the present paper is to describe this specimen, and to discuss the biostratigraphic range, chronostratigraphic relevance, and the paleobiogeographic distribution and paleoecology of this Late Triassic heteromorphic ammonoid. Geologic and stratigraphic settingsThe Timon-Ciungi olistolith, along with many other olistoliths composed of Triassic sedimentary and/or ophiolitic rocks, is embedded in Lower Cretaceous wildflysch that infills the Raràu Syncline of the Bucovinian Nappe in the northern part of the inner Eastern Carpathians (Sàndulescu 1973). The Triassic rocks of the olistoliths and also of several large klippen scattered along the inner zone of the Eastern Carpathians, in the Raràu, Hàghimaş and Perşani Mts, are assigned to several, facially distinctive Transylvanian Triassic Series (Patrulius 1996).The Timon-Ciungi olistolith is located on the left side of the drainage of the Timon Creek, which is a tributary of the Moldova River at the Fundu Moldovei locality (Fig. 1). The olistolith, several tens of meters in length, was largely quarried in the 1960s. The limestone quarry was abandoned for a long time and the area is now entirely reforested, with only few small exposures remaining. The main m...

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“…Par référence au Timor oriental, elle est subdivisée en deux membres: Atahoc (600 m) et Cribas (400 m). Dans la partie sud du Timor occidental, les travaux du Groupe Geobanda (Harsolumakso 1993, Villeneuve et al 1995, Martini et al 2000 ont montré que des shales du Trias inférieur et moyen, identiques à ceux du sommet de la succession de Kekneno, se retrouvaient à la base de la formation de Tumu (au Sud de Soe et de Niki-Niki). Dans le membre de Tumu les shales et limestones bariolés à Halobies sont surmontés par des calcaires gris, blancs et roses à radiolaires qui indiquent un âge Trias moyen à supérieur (Carnien à Rhetien).…”

Section: éChelle Stratigraphie Proposeeunclassified

“…Mais Berry et al (1984) attribuent au Trias inférieur et moyen les calcaires du Mont Lilu (au Timor oriental) qu'Audley-Charles (1968) et Gageonnet & Lemoine (1958) avaient considérés comme Permiens. Les calcaires argileux rouges à radiolaires et Halobies qui surmontent le Permien au nord de Kapan sont attribués au Trias moyen à supérieur tandis qu'à Baun (au sud-est de Kupang) ont été décrits des faciès ammonitico-rosso du Trias supérieur (Martini et al 2000). Le Jurassique est représenté par d'importantes venues basaltiques datées par radiométrie du Jurassique supérieur (Harsolumakso 1993).…”

Section: éChelle Stratigraphie Proposeeunclassified