The first plant megafossil in the Early Jurassic of Greece: Brachyphyllum (Coniferales) from the Lower Posidonia Beds (Toarcian) in the Ionian zone (NW Greece) and its palaeogeographic implications

Karakitsios, V.; Kvaček, Zlatko; Mantzouka, Dimitra

doi:10.1127/njgpa/2015/0518

Cited by 9 publications

(4 citation statements)

References 18 publications

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“…The External Hellenides are considered mainly as either a region of thin-skinned tectonics or displaying a coexistence of thin-and thick-skinned deformation of the Mesozoic-Cenozoic succession above the Triassic evaporites and Permian basement sequences [31][32][33][34]. Structural [33][34][35][36], sedimentologic-stratigraphic [37][38][39][40][41][42][43], geochemical and paleontological studies [44][45][46][47][48][49][50][51][52] cover almost the whole extent of the exposed stratigraphy in an effort to evaluate the hydrocarbon potential of the Ionian zone [53][54][55][56], not only in Western Greece but also in Albania [57][58][59] and in similar settings in Italy [60,61].…”

Section: Geological Settingmentioning

confidence: 99%

Implications of Salt Diapirism in Syn-Depositional Architecture of a Carbonate Margin-to-Edge Transition: An Example from Plataria Syncline, Ionian Zone, NW Greece

Vakalas,

Kokkalas,

Konstantopoulos

et al. 2023

Applied Sciences

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The present study examines the imprint of salt tectonics on carbonate depositional patterns of the Ionian zone platform edge to slope transition. The study area is part of an overturned rim syncline adjacent to a salt diapir. The Ionian zone is made up of three distinct stratigraphic sequences (pre-, syn- and post-rift sequences) represented by evaporites and shallow water carbonates at the base that pass gradually to a sequence consisting of pelagic limestones with shale intervals. In the study area, six cross sections were constructed, mainly covering the edge-to-slope overturned succession of Early Cretaceous to Eocene carbonates (post-rift stage) in the northern limb of the syncline. In the measured sections, abrupt changes in sediment texture resulted in the formation of distinct, thick-bedded carbonate layers, identified as packstones to grainstones–floatstones, with abundant fossil fragments, indicating deposition by debrites in a platform slope or slope-toe environment. Planar and ripple cross-lamination also suggest the involvement of turbidity currents in the depositional process. In the upper levels of the Lower Cretaceous carbonates, chert bodies with irregular shapes indicate soft sediment deformation due to instability of the slope triggered by salt intrusion. Internal unconformities identified in the field and in the available seismic data combined with the vertical to overturned dipping of the strata correspond to a basal megaflap configuration. Syn-sedimentary deformation resulted in the accumulation of debritic and turbiditic layers, while the compressional regime established in the area from the Late Cretaceous to Early Eocene enhanced the fracture porosity of carbonates, which could eventually affect the reservoir properties.

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Section: Geological Settingmentioning

confidence: 99%

Implications of Salt Diapirism in Syn-Depositional Architecture of a Carbonate Margin-to-Edge Transition: An Example from Plataria Syncline, Ionian Zone, NW Greece

Vakalas,

Kokkalas,

Konstantopoulos

et al. 2023

Applied Sciences

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“…pulcher , and B . castatum [ 6 , 58 , 62 – 64 ], or their stomatal rows are not well defined, as in B . mamillare and B .…”

Section: Discussionmentioning

confidence: 99%

New data on the stem and leaf anatomy of two conifers from the Lower Cretaceous of the Araripe Basin, northeastern Brazil, and their taxonomic and paleoecological implications

et al. 2017

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Pseudofrenelopsis and Brachyphyllum are two conifers that were part of the Lower Cretaceous (Aptian) taphoflora of the Crato Formation, Araripe Basin, northeastern Brazil. The former genus includes, so far, P. capillata and indeterminate species, whilst the latter is mainly represented by B. obesum, the most common plant megafossil recovered from that stratigraphic unit. Here, the stem and leaf anatomy of Pseudofrenelopsis sp. and B. obesum specimens is revisited, including the first report of some epidermal and vascular traits for both taxa from the Crato Formation. Along with its paleoecological significance, the new data suggest the presence of more than one Pseudofrenelopsis species in the Aptian taphoflora of the Araripe Basin and further support the taxonomic placement of B. obesum within Araucariaceae.

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“…The Ionian zone has been extensively studied, as it has attracted interest for hydrocarbon exploration for more than half a century. Structural, sedimentological, geochemical and paleontological studies [50,[53][54][55][56][57][58][59][60][61][62][63][64][65] cover almost the whole extent of the exposed stratigraphy to evaluate the hydrocarbon potential of the Ionian zone not only in Western Greece but also in Albania and similar settings in Italy. The Ionian zone consists of sedimentary rocks ranging from Triassic evaporites to Jurassic-Upper Eocene carbonates and minor cherts and shales (Figure 2).…”

Section: Geological Settingmentioning

confidence: 99%

Sedimentary Characteristics and Basin Evolution of a Compartmentalized Foreland Basin—Internal Ionian Zone, Western Greece

Vakalas,

Tripsanas,

Tzimeas

et al. 2024

Energies

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This study is based on the detailed sedimentological analysis of eleven sections and one well through the late Eocene–Oligocene flysch formation of the Internal Ionian Zone (IIZ) in Western Greece. The sections are spread from the northern parts of Epirus to the north and Aitolokarnania to the south. Sedimentological data combined with biostratigraphic analyses resulted in a five-stage evolutionary model for the basin. Unit I corresponds to the lower part of the examined sections, indicating the onset of clastic sedimentation. Regarding depositional environments, it is regarded as a basin plain where lobe distal fringe accumulations occur. Unit II consists almost exclusively of heterolithic facies, marking the advance of a lobe complex system. Massive sandstone facies dominate unit III and can be considered a more proximal submarine fan system. Unit IV reflects a calm period of the basin, where mud-dominated heterolithics and hemipelagic mudstones were deposited. Hemipelagic mudstone facies with intervals of heterolithics, conglomerates, and deformed and massive sandstone facies characterize unit V. The architecture resembles a slope system incised by canyons and channels. The sand-rich intervals in Units III and V could act as the most favorable reservoir levels. In contrast, the sand-rich intervals in Unit II are considered less promising due to their higher heterogeneity.

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The first plant megafossil in the Early Jurassic of Greece: Brachyphyllum (Coniferales) from the Lower Posidonia Beds (Toarcian) in the Ionian zone (NW Greece) and its palaeogeographic implications

Cited by 9 publications

References 18 publications

Implications of Salt Diapirism in Syn-Depositional Architecture of a Carbonate Margin-to-Edge Transition: An Example from Plataria Syncline, Ionian Zone, NW Greece

Implications of Salt Diapirism in Syn-Depositional Architecture of a Carbonate Margin-to-Edge Transition: An Example from Plataria Syncline, Ionian Zone, NW Greece

New data on the stem and leaf anatomy of two conifers from the Lower Cretaceous of the Araripe Basin, northeastern Brazil, and their taxonomic and paleoecological implications

Sedimentary Characteristics and Basin Evolution of a Compartmentalized Foreland Basin—Internal Ionian Zone, Western Greece

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