|Title||Geochemistry of dike rocks of the Argentine Islands and the near area of the Antarctic Peninsula (Western Antractica)|
|Publication Type||Journal Article|
|Year of Publication||2018|
|Abbreviated Key Title||Dopov. Nac. akad. nauk Ukr.|
The dike rocks in the area of the Argentine Islands and the near part of the Antarctic Peninsula by geochemical characteristics are mature island-arc matter of calc-alkaline formations that were formed moderate depths due to the melting of a metasomatic mantle source. The primitive (outgoing) melts are, probably, close by the composition to high-magnesium dike rocks. Variations in the composition of dike basites can be associa ted with the fractional crystallization with clinopyroxene admixtures dominant in liquidase to ∼ 5% by weight, and after — plagioclase, hornblende, and ore minerals (probably, titanomagntite). The products of deep mantle (plum) sources in the selected samples were not detected.
|Keywords||Antarctic Peninsula, Argentine Islands, cumulates, dikes, multielement diagram, REE|
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