Organic-carbon deposition in the Cretaceous of the Ionian Basin, NW Greece: the Paquier Event (OAE 1b) revisited

Tsikos, Harilaos; Karakitsios, V.; Breugel, Yvonne van; Walsworth-Bell, Ben; Bombardiere, Luca; Petrizzo, Maria Rose; Damsté, Jaap S. Sinninghe; Schouten, Stefan; Erba, Elisabetta; Silvá, Isabella Premoli; Farrimond, Paul; Tyson, Richard V.; Jenkyns, Hugh C.

doi:10.1017/s0016756804009409

Cited by 66 publications

(97 citation statements)

References 35 publications

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“…%, and the Cenomanian-Turonian (Bonarelli) OAE2 with a TOC of 44.5 wt. % Tsikos et al, 2004;Karakitsios et al, 2007a, Karakitsios and. The thickness of the Vigla shale member ranges between 10 and 65 m (33 and 213 ft).…”

Section: Petroleum Systems Source Rocksmentioning

confidence: 99%

Western Greece and Ionian Sea petroleum systems

Karakitsios¹

2013

Bulletin

119

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In western Greece, the Ionian and pre-Apulian zones represent, respectively, the basin and the transitional zone (slope) to the Apulian platform. The Apulian platform constitutes the weakly deformed foreland of the external Hellenides. The pre-Apulian zone appears in the Ionian Islands and the eastern Ionian Sea, whereas the Apulian platform is exclusively found in the Ionian Sea. The Ionian zone consists of Triassic evaporites, Jurassic–upper Eocene (mostly pelagic carbonates, minor cherts, and shales), overlain by the Oligocene flysch. Organic-rich source rocks occur within Triassic evaporites and Jurassic–Cretaceous pelagic argillaceous-siliceous rocks. The pre-Apulian zone consists of Triassic to Miocene deposits, mainly mixed neritic-pelagic carbonates. Hydrocarbon source rocks include pelagic and hemipelagic deposits rich in marine organic material, although terrigenous organic matter is also found in siliciclastic layers. Apulian platform source rocks are mainly the organic-rich shales within the Triassic Burano evaporites. Western Greece contains major petroleum systems, which extend into the Ionian Sea. Ionian, pre-Apulian, and Apulian petroleum systems contribute to the probable hydrocarbon accumulations within the big offshore (Ionian Sea) anticlines. Western Greece contains important oil and gas shale reservoirs with a potential of unconventional exploration. Promising areas for hydrocarbons need systematic and detailed three dimensional seismic data. Exploration for conventional petroleum reservoirs, through the interpretation of seismic profiles and the abundant surface geologic data, will provide the subsurface geometric characteristics of the unconventional reservoirs. Their exploitation should follow that of conventional hydrocarbons to benefit from the anticipated technological advances, eliminating environmental repercussions

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Section: Petroleum Systems Source Rocksmentioning

confidence: 99%

Western Greece and Ionian Sea petroleum systems

Karakitsios¹

2013

Bulletin

119

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“…The "Paquier" event falls in Roth's (1978) nannoplankton Zone NC8 as does the age of the black shale horizon within the lower part of the Shadui Formation. If the black shale horizon within Bed 2 at Bangbu locality corresponds to the "Paquier" event, that Herrle et al (2003) related to a period of extreme monsoonal forcing, then it would demonstrate the expansion of the latter event into the Eastern Tethys, although current available literature concludes that the "Paquier" event is known only from the Tethys-Atlantic region (Tsikos et al 2003).…”

Section: Discussionmentioning

confidence: 99%

Nannofossil biostratigraphy of the Lower Cretaceous Shadui Formation (Northern Tethyan Himalayas, Southern Tibet)

Švabenická¹,

Jansa³

et al. 2010

Geologica Carpathica

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Calcareous nannofossils of Aptian-Albian age were found in the basal part of the Shadui Formation, Northern Tethyan Himalayas, Southern Tibet. The predominantly shale strata are exposed near the northeastern tip of Yamdrock Tso Lake at the locality of Bangbu and they were previously considered to be of Late Cretaceous age. Occurrence of the nannofossil species Prediscosphaera columnata and Cribrosphaerella ehrenbergii indicates the Upper Aptian-Lower Albian Zone BC23. Nannofossil species of Late Albian, Cenomanian or younger Cretaceous age were not present in the studied part of the Shadui Formation. Nannofossils are badly preserved and hardly identifiable probably as a result of strong post mortem etching and dissolution during burial. The depositional setting of the Shadui Formation is interpreted as hemipelagic to pelagic. A horizon of dark shale in the lower part of the Shadui Formation may be stratigraphically correlated with ocean anoxic event OAE1b. The discovery of calcareous nannofossils at the Bangbu locality increases the stratigraphic precision in the correlation of Cretaceous strata between hemipelagic-pelagic facies and shelf depositional areas in the Tibetan Tethyan Himalayas.

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“…The early Aptian event (Selli event, OAE 1a) has its type locality in Italy, named "Livello Selli" (Coccioni et al 1989;Baudin et al 1998;Li et al 2008;Blättler et al 2011), and the event of early Albian (Paquier event, OAE 1b) was first recognized in the Vocontian basin in southeastern France (Bréhéret 1985(Bréhéret , 1994Herrle et al 2003). Both events are well represented by organic rich black shales in the Alpine-Mediterranean region and anthers regions of the world (Sliter 1989;Bralower et al 1993;Herrle et al 2003;Tsikos et al 2004;Robinson et al 2008;Hofmann et al 2008;Blättler et al 2011;Nuñez-Useche et al 2014).…”

Section: Oceanic Anoxic Event 1a and Oceanic Anoxic Event 1b -Black Smentioning

confidence: 99%

The Cogollo Group and the oceanic anoxic events 1a and 1b, Maracaibo basin, Venezuela

Dot

Baamonde

Reyes³

et al. 2015

Braz. J. Geol.

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ABSTRACT:Carbonates of Cogollo Group (Apón, Lisure and Maraca formations) constitute the broader calcareous platform system originated during Aptian and Albian of Cretaceous in north-western South America, Maracaibo Basin, Venezuela. On the shallow shelf, a variety of calcareous sedimentary facies were deposited during marine transgressive and regressive cycles. Some of them developed porosity and constitute important hydrocarbon reservoirs. Due to some major marine transgressions, from early Aptian, the anoxic environment and characteristic facies of a pelagic environment moved from the outer slope and basin to the shallow shelf, during specific time intervals, favouring the sedimentation of organic matter-rich facies, which correspond to the oceanic anoxic events (OAEs) 1a and 1b. The source rock of Machiques Member (Apón Formation) was deposited during early Aptian OAE 1a (~ 120 Ma). The source rock of Piché Member, located at the top of the Apón Formation, was deposited during late Aptian OAE 1b (~ 113 Ma). Finally, La Luna Formation, from Cenomanian, that covers the OAE 2 (~ 93 Ma), represents the most important source rock in the Maracaibo Basin. In this way and based on sedimentological and organic geochemistry results from the determinations performed on 247 samples belonging to six cores in the Maracaibo Basin, we propose these two organic-rich levels, deposited on the shallow shelf of the Cogollo Group, as "effective source rocks", additional to La Luna Formation, with oil migration in relatively small distances to the porosity facies. KEYWORDS:

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Organic-carbon deposition in the Cretaceous of the Ionian Basin, NW Greece: the Paquier Event (OAE 1b) revisited

Cited by 66 publications

References 35 publications

Western Greece and Ionian Sea petroleum systems

Western Greece and Ionian Sea petroleum systems

Nannofossil biostratigraphy of the Lower Cretaceous Shadui Formation (Northern Tethyan Himalayas, Southern Tibet)

The Cogollo Group and the oceanic anoxic events 1a and 1b, Maracaibo basin, Venezuela

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