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| Hoedemaeker, Ph.J.. |
| In the first part of this publication an attempt is made to bring some order in the terminological chaos existing in the field of delapsion, which is the independent gravitating of rock material along sloping surfaces. The term olisthon is introduced for everything that has been delapsed. For the purpose of a rational and comprehensive classification of geological phenomena delapsion is introduced as a separate class between tectonization and sedimentation. Special emphasis is laid upon the concepts of olisthostrome and olistholith, which are redefined. The principles of the mechanics involved in delapsional processes are discussed. In the second part emphasis is laid upon the description of the olisthostromes, olistholiths, reversely graded mud flow and... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.25. |
| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/317502 |
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| Kakabadze, M.V.; Hoedemaeker, Ph.J.. |
| Twenty-two species (among which six new ones) of the following Early Cretaceous ammonite genera are described: Crioceratites (C. leivaensis sp. nov.), Pedioceras (P. asymmetricum sp. nov.), Paracrioceras, Hamulinites, Karsteniceras (K. multicostatum sp. nov.), Hamiticeras (H. chipatai sp. nov.), Tonohamites, Ancyloceras, Pseudocrioceras, Pseudoaustraliceras, Ptychoceras, Colchidites, Protanisoceras [P. (P.) creutzbergi sp. nov.]. One new genus is proposed: Monsalveiceras gen. nov. (M. monsalvense sp. nov.). The Barremian and middle Aptian heteromorph assemblages show close affinities with synchronous assemblages of the Mediterranean Faunal Region. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.22. |
| Ano: 1997 |
URL: http://www.repository.naturalis.nl/record/317530 |
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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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