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| Ginkel, A.C. van. |
| A 400 m thick succession of Carboniferous rocks near Pendueles (E Asturias) at the north coast of Spain has yielded fusulinid foraminifera indicating an Upper Bashkirian age for the basal strata, and at least an Upper Podolskian age for the uppermost fusulinid-containing limestone 135 m below the top of the sequence. The fusulinid species from the Pendueles section have been sampled and described from seven stratigraphic levels at regular intervals from each other. Age determinations for each of these levels showed that strata of Vereyan and Lower Kashirian age (Lower Moscovian) are either missing or represented by a thin (40 m) sequence of chert below the Escalada Limestone. One new subspecies of Profusulinella ovata Rauser-Chernoussova is described. It... |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/505869 |
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| Maas, K.; Ginkel, A.C. van. |
| In the area of Valdeón and adjacent western Liébana (along the provincial boundary between León and Santander, in northern Spain) Namurian and Westfalian flysch deposits are unconformably covered by a sequence of olistostrome and flysch units, alternating with nappes. This sequence, with a thickness of about 5 km, was built up during the Middle Cantabrian. It is covered in turn by the Picos de Europa nappes with intercalated flyschoid sediments of a slightly younger age. In this paper the discrete lithostratigraphic and structural units are described and analyzed. Special attention is given to the fusulinid biostratigraphy. The contact relations between nappes and olistostrome units and their complementary lithostratigraphy are explained as the result of... |
| Tipo: Article / Letter to the editor |
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| Ano: 1983 |
URL: http://www.repository.naturalis.nl/record/505699 |
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| Ginkel, A.C. van. |
| The Myachkovian and Kasimovian chronostratigraphic units in the U.S.S.R. are correlated with similar units as used in western Europe. This correlation is here established through northwestern Spain, where fusulinid faunas and plant fossils enable a comparison with the U.S.S.R. and western Europe. It is shown that the lower- and upper limit of the Myachkovian correlate with some level in the Westfalian D and the middle Cantabrian respectively and that the top of the Kasimovian may probably be equated with some level in the Stephanian B. |
| Tipo: Article / Letter to the editor |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/505636 |
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| Ginkel, A.C. van. |
| Deposition of the Sama Formation in the northeastern part of the Central Asturian Coal Basin most probably started in late Lower or early Upper Moscovian time and continued into the Myachkovian; a conclusion based wholly on investigation of the genus Hemifusulina. The Hemifusulina specimens occur all in siltstones and shales with a varying amount of lime, which apparently are the type of sediments laid down in conditions in which this genus could thrive. In the Sama Formation three Hemifusulina zones have been distinguished. A lower zone with H. ex gr. moelleri Raus. at the very base of this formation, a middle zone containing H. ex gr. communis Raus. and H. ex gr. dutkevichi (Putrya) and an upper zone with H. ex gr. graciosa (Lee). The lower zone contains... |
| Tipo: Article / Letter to the editor |
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| Ano: 1973 |
URL: http://www.repository.naturalis.nl/record/505599 |
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| Ginkel, A.C. van. |
| The present paper deals briefly with the main geological features of the Casavegas area (Northern Palencia, Spain). Though incomplete, the sequence of Carboniferous strata in this region is regarded as a reference-section for correlation purposes within the larger N. Palencia area. A local subdivision on fusulinids of a part of the Carboniferous is proposed. Three zones are distinguished: Protricites Zone F. ex gr. brañoserae Subzone Fusulinella Zone F. delepinei Subzone Profusulinella Zone Fusulinella bocki, var. delepinei is brought to species level as F. delepinei Van Ginkel, sp. nov. |
| Tipo: Article / Letter to the editor |
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| Ano: 1959 |
URL: http://www.repository.naturalis.nl/record/505748 |
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| Ginkel, A.C. van. |
| The uppermost marine fusulinid-bearing strata in northwestern Spain are found in the area of the upper Río Pisuerga in northern Palencia and in the area of the lower Río Cares in Oviedo (Asturia). The youngest fusulinid faunas in the Pisuerga area belong to the Protriticites Zone; they indicate a Lower Kasimovian age. In the area of the lower Río Cares fusulinids belong to the Triticites Zone; they indicate an Upper Kasimovian age. The Protriticites Zone of Spain is defined as the time-span between the first occurrence of Protriticites and the first occurrence of Triticites. One new species – Triticites (Montiparus) fischeri – and one new subspecies – Triticites (Triticites) ohioensis Thompson subsp. benshi – both occurring in the Triticites Zone of the... |
| Tipo: Article / Letter to the editor |
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| Ano: 1971 |
URL: http://www.repository.naturalis.nl/record/505666 |
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| Ginkel, A.C. van. |
| Fusulinid faunas from various locations spread throughout the Cantabrian mountains are described as belonging to about 180 species including 17 new species and 11 new subspecies of 18 genera. The latter are Staffella (with 3 new species), Parastaffella (with 3 new species and 2 new subspecies), Millerella, Ozawainella (with 2 new species), Pseudostaffella, Schubertella, Fusiella, Profusulinella (with 1 new species and 3 new subspecies), Aljutovella (with 1 new species), Hemifusulina, Beedeina (with 1 new species and 1 new subspecies), Verella, Eofusulina (with 1 new species), Fusulina (with 2 new species and 1 new subspecies), Hidaella (with 1 new subspecies), Fusulinella (with 3 new species and 3 new subspecies), Obsoletes and Protriticites. The faunas... |
| Tipo: Article / Letter to the editor |
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| Ano: 1965 |
URL: http://www.repository.naturalis.nl/record/506005 |
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