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| Kuijper, R.P.. |
| A dolerite intrusion in Upper Carboniferous sediments in Netherlands offshore block G/17 is described. Based on electron microprobe analyses of clinopyroxene and olivine, a minimum temperature of emplacement of some 1000°C is calculated. As a result of the intrusion, the maturation profile of the surrounding sediments may show a departure from linear behaviour. |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.26. |
| Ano: 1991 |
URL: http://www.repository.naturalis.nl/record/317491 |
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| Moreva-Perekalina, T.V.. |
| The mantle-derived xenoliths from alkali-basalts of Finkenberg (West Germany) belong mostly to the lherzolite and wehrlite series. The members of the lherzolite suite are spinel-bearing lherzolites, harzburgites and websterites. They have undergone processes of strong deformation and partial recrystallization. The major mineral phases (olivine, orthopyroxene) are highly magnesian but the pyroxenes contain also a relatively high amount of Al2O3 (spinel exsolution in both ortho- and clinopyroxene). Subsolidus re-equilibration was an important stage in the formation of these rocks. This type of xenoliths is considered to represent upper-mantle material which has undergone a relatively low degree of partial melting. Xenoliths belonging to the wehrlite suite... |
| Tipo: Article / Letter to the editor |
Palavras-chave: 38.26. |
| Ano: 1985 |
URL: http://www.repository.naturalis.nl/record/317407 |
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