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| Registros recuperados: 17 | |
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| Owen, H.G.. |
| Although the so-called 'standard' ammonite zonation of the Albian contains index species which occur in the Tethyan province, the scheme largely reflects the faunal succession in the European faunal province with its endemic sonneratiinid and hoplitinid faunal elements. Workers in the Tethyan province, stretching from South America in the west to Australia in the east, including southern Africa, Madagascar and India, face problems in the correlation of their successions with this so-called 'standard' scheme. There are other problems in that the succession of hoplitinid ammonites used in the biostratigraphy of European Albian sediments allows a far more detailed zonation to be made than in the case of some of the longer time-ranging Tethyan forms. This... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317327 |
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| Hoedemaeker, P.J.. |
| This paper deals with the ammonite biostratigraphy of the lower 312 m of the Miravetes Formation (sections Y and Z) exposed 500 m north and northwest of Los Miravetes along the Río Argos, 3 km west of Caravaca (SE Spain). This sequence embraces the uppermost Tithonian, Berriasian, and lower Valanginian. The succession of ammonite assemblages is similar to the one described by Le Hégarat (1971) from SE France. Le Hégarat's results are, where possible, completed and, where necessary, corrected. Arguments are adduced for a stratigraphic position of the Tithonian-Berriasian boundary, which should also be the Jurassic-Cretaceous boundary, between the Pseudosubplanites grandis and Subthurmannia (Strambergella) subalpina subzones. The Berriasian was divided into... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1982 |
URL: http://www.repository.naturalis.nl/record/317442 |
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| Bosch, M. van den; Cadée, M.C.; Janssen, A. W.. |
| Tertiary sediments (Oligocene - Pliocene) in the Gelderse Achterhoek and Twente (Winterswijk - Almelo region, eastern part of the Netherlands, provinces of Gelderland and Overijssel) are lithologically subdivided in a number of members. In this paper the Ratum Member, the Brinkheurne Member, the Winterswijk Member, the Aalten Member, the Eibergen Member, the Zenderen Member and the Lievelde Member are introduced. The Delden Member, already introduced in 1860, is redefined; this member occurs between the Zenderen Member and the Lievelde Member. The Aalten Member is subdivided in two new beds, the Miste Bed and the Stemerdink Bed respectively. For each of the lithological units a stratotype and some reference sections are designated. In the palaeontological... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/317512 |
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| Nemyrovska, T.I.; Wagner, R.H.; Winkler Prins, C.F.; Montañez, I.. |
| Two different tectono-stratigraphic domains are recognised in the Cantabrian Mountains, Asturian-Leonese (Cantabrian Zone) and Palentian (Palentian Zone). The area under investigation belongs to the southern part of the Palentian Domain and attention is focused on the Upper Viséan to lowermost Bashkirian limestones at the village of La Lastra in northern Palencia. A new geological map of the Palentian Zone is accompanied by a more detailed map centred on La Lastra. The Barcaliente Limestone Formation (Serpukhovian to lowermost Bashkirian) occurs in the overturned limb of a recumbent anticline which constitutes the head of a south-verging major thrust unit, the Carrionas Thrust Sheet (Palentian Zone). It shows here a shallowing trend in the Serpukhovian.... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Serpukhovian; Bashkirian; Biostratigraphy; Palaeoecology; 42.65; 38.16. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/428483 |
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| Ropolo, P.; Roland, G.; Conte, G.. |
| Biostratigraphical investigation of the marly limestones of the La Bédoule area (SE France) has revealed a rich macrofaunal interval in four different sections, mainly consisting of the ammonite genera Pseudocrioceras and Barremites. A detailed study of the immediately under- and over-lying beds shows that in all four sections, the Pseudocrioceras interval, unambiguously equivalent to the Pseudocrioceras coquandi Zone of Busnardo (1984), occurs stratigraphically between a late Barremian heteroceratid fauna (Colchidites aff. tsholashensis (Rouchadze), Martelites aff. vulanensis (Egoian), Simionescites aff. simionescui Avram) of the Martelites sarasini Zone (Hoedemaeker et al., 1993) and an earliest Aptian deshayesitid fauna (Deshayesites antiquus Bogdanova,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317366 |
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| Jagt, J.W.M.; Jagt-Yazykova, E.A.. |
| A synthesis of the stratigraphy of the Maastrichtian Stage in its extended type area, that is, southern Limburg (the Netherlands), and adjacent Belgian and German territories, is presented with a brief historical overview. Quarrying activities at the large quarry complex of ENCI-HeidelbergCement Group will officially come to an end on July 1, 2018. However, the stratotype section below the Lichtenberg farmstead and directly behind the main office building at the Lage Kanaaldijk (Maastricht), will be preserved, as will various faces within the quarry complex. Strata of Maastrichtian age include the Vijlen, Lixhe 1-3 and Lanaye members of the Gulpen Formation, as well as the Valkenburg, Gronsveld, Schiepersberg, Emael, Nekum and Meerssen members of the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Late Cretaceous; Maastrichtian; Type area; Localities; Stratigraphy; 38.16; 38.22. |
| Ano: 2012 |
URL: http://www.repository.naturalis.nl/record/428924 |
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| Bogdanova, T.N.; Prozorovsky, V.A.. |
| This paper focuses on the Barremian/Aptian boundary in the Trans-Caspian area. Results of a stratigraphical study of the uppermost Barremian and the lower Aptian succession in the Trans-Caspian area are presented. The bed-by-bed description of three sections — Keldzhe, Tekedzhik and Utuludzha — is given as well as detailed lithologic columns. Five ammonite zones are known in the studied stratigraphic interval — the Turkmeniceras turkmenicum, Deshayesites tuarkyricus, D. weissi, D. deshayesi, and Dufrenoya furcata zones. These zones are correlated with those of Europe. The Barremian/Aptian boundary in the Trans-Caspian area should be drawn at the base of the D. tuarkyricus Zone. It corresponds to the layers with the first occurrences of Deshayesites,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317318 |
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| Daams, R.; Freudenthal, M.. |
| The system of Neogene Mammal Zones, as originally created by Mein (1975), is discussed, and found to be confusing. The Aragonian in the type section and in the surrounding area is discussed, and the evolution of its fauna described in some detail. It appears dubious to apply the MN-zones to the faunules of the Aragonian type area. On the other hand, the type section may well serve as a basis for correlation of Miocene vertebrate localities in Spain and France and — may be — in other parts of Europe. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1981 |
URL: http://www.repository.naturalis.nl/record/317501 |
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| Rawson, P.F.; Hoedemaeker, P.J.. |
| The Working Group proposes only one modification to its current zonation of the Mediterranean Region, the addition of a cristatum Subzone in the lower part of the inflatum Zone (upper Albian). But in the light of newly published research it highlights levels/areas where further work is required, especially to resolve conflicting zonal schemes. It also proposes a ‘Tethyan Province’ zonation for the middle Albian. Alternative correlations for the Boreal/Tethyan Valanginian to Barremian stages are tabulated, one based on ammonite evidence alone, the other with additional biostratigraphical data coupled with sequence stratigraphy and magnetostratigraphy. |
| Tipo: Article / Letter to the editor |
Palavras-chave: Ammonites; Correlation; Lower Cretaceous; 38.16. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/216193 |
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| Schalke, H.J.W.G.. |
| Palynological data and other evidence suggest that the Upper Quaternary of the Cape Flats area can be subdivided chronostratigraphically into units that may be correlated with those of the Northern Hemisphere. Five intervals have been identified in the Middle Pleniglacial and formal names are introduced for these intervals. During three of them, the MILNERTON, KILLARNEY and BLOUBERG intervals, the vegetation had a xerophytic character and is comparable with that of the Holocene. During the intermediate periods, the SALTRIVER and DIEPRIVER intervals, an extension of the mixed Podocarpus (Knysna) forest to the Cape Flats area took place. These changes in vegetation can be explained by differences of effective precipitation. Two periods of sedimentation,... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/317422 |
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| Hoedemaeker, Ph.J.. |
| The present-day detailed knowledge of the zonation and the chronostratigraphic ranges of the fossils of the Mediterranean Berriasian makes it possible to re-evaluate critically the factual evidence on which the correlation of the Boreal sequence with the Tethyan standard is based. It turns out that the evidence is still very meagre and that correlation by means of marine fossils is only possible for time-intervals in which the sea level was high. Some important results of this investigation are: 1) The Valanginian age of the upper Ryazanian: the base of the Tirnovella alpillensis Subzone is stratigraphically closest to, or even coinciding with, the boundary between the lower and the upper Ryazanian and to the base of the German 'Wealden' unit 4. 2) The... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1987 |
URL: http://www.repository.naturalis.nl/record/317426 |
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| Poel, H.M. van de. |
| Five successive, distinct, microfossil assemblages, primarily characterized by their benthic foraminiferal contents, have been recognized in the Mio-Pliocene of the Carboneras-Nijar Basin (SE Spain). The assemblages record a number of fundamental changes in the environment of the area, which have been dated by means of planktic foraminifer biostratigraphy. In the earliest Messinian the central part of the basin was several hundreds of metres deep and had relatively open marine conditions, which were followed by oxygendeficiency, accompanied by slightly deviating salinities and some reduction in waterdepth. Subsequent deposition of Messinian evaporites was interrupted by sparse more open marine sedimentation. During the late Messinian brackish conditions... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1992 |
URL: http://www.repository.naturalis.nl/record/317526 |
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| Klein, J.; Hoedemaeker, P.J.. |
| Since the 2nd Workshop of the Lower Cretaceous Cephalopod Team in Mula, Spain (Hoedemaeker et al., 1993), several ammonite zones and ammonite horizons have been introduced that still have not be inserted in the standard zonation of the Mediterranean area. In the present survey (1) the different results of various independent specialists are compared, (2) an attempt is made to correlate their resulting zonation schemes, and (3) recommendations are given for the use of the newly introduced zones and horizons in the Mediterranean region. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1999 |
URL: http://www.repository.naturalis.nl/record/317316 |
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| Loevezijn, G.B.S. van. |
| The Asturo-Leonese Basin is one of the three large palaeogeographical units of the Cantabrian Zone. In the north the basin is bounded by the Asturian Geanticline and the Palencian Basin. In the south the Palaeozoic succession is covered by Mesozoic and Tertiairy deposits. The Upper Devonian to lowermost Carboniferous succession of the Asturo-Leonese Basin includes the Nocedo Formation with the Gordón and Millar members, the Fueyo and the Ermita Formation. In these units, eight facies and ten subfacies are distinguished. The sediments of facies a, b, c2, c3, and cr are grouped in an inner shelf cluster, whereas facies cl, e, f, and g are grouped in an outer shelf cluster. With the aid of facies maps and conodont data the palaeogeographic development of the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.16. |
| Ano: 1986 |
URL: http://www.repository.naturalis.nl/record/317402 |
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| Registros recuperados: 17 | |
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