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Document Type |
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Article In Journal |
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Document Title |
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Petrochemistry of Mafic and Ultramafic Rocks of CY -4 Drill-Hole, Cyprus Crustal Study Project بتروكيميائية الصخور المافية وفوق المافية للحفرة التنقبية قبرص 4 مشروع دراسة القشرة القبرصية |
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Subject |
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Earth Sciences |
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Document Language |
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English |
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Abstract |
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This paper is a result of study and investigation of 45 samples
collected, at 50 meter intervals, from CY -4 drill hole of the Cyprus Crustal
Study Project, to confirm, on basis of petrographic studies and chemical
analysis, the classification of the Troodos Ophiolite suite and the terminology
of the rock units.
Troodos complex comprises a Cretaceous ideal ophiolite suite. Drill hole
CY -4, located in the southeastern part of the complex, penetrates through
sheeted dikes, gabbroic rocks, and ultramafic cumulates. The rock sequence
of the drill hole could be broadly classified into:
I) a diabasic zone representing the sheeted dikes, (9.85m-483.5Om),
2) a zone of mixture of sheeted dikes and gabbros, (483.5Om-837.45m),
3) massive gabbro zone, (837.45m-1346.8Om),
4) cumulate gabbro zone, (1346.8Om-1754.10m)a, nd
5) ultramafic zone consisting essentially of clinopyroxenite, websterite
and dunite, (1754.10m-2263m).
The studied samples can be divided chemically into mafic and ultramafic
groups which correspond closely to the petrographic classification. Mafic
magmatic rocks are generally oversaturated tholeiites. Trace element contents
are similar to those expected from such rock suites. Chemical characteristics
of the ultramafic rocks indicate a cumulate origin consistent with
previous investigations. |
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ISSN |
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1012-8832 |
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Journal Name |
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Earth Sciences Journal |
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Volume |
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1 |
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Issue Number |
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1 |
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Publishing Year |
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1408 AH
1988 AD |
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Number Of Pages |
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14 |
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Article Type |
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Article |
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Added Date |
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Sunday, October 11, 2009 |
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