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首页> 外文期刊>South African Journal of Geology: Being the Transaction of the Geological Society of South African: Syndie die Verhandelinge van die Geologiese Vereniging van Suid-Afrika >Lithostratigraphy of the Friersdale Charnockite (Keimoes Suite), South Africa
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Lithostratigraphy of the Friersdale Charnockite (Keimoes Suite), South Africa

机译：Friderdale Charnockite（凯莫套房），南非岩石岩

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摘要

The Friersdale Charnockite is a late-Mesoproterozoic (1078 +/- 10 Ma), fine-to medium-grained to porphyritic orthopyroxene-bearing monzogranite intrusion with characteristic opalescent quartz that outcrops in the KeimoesUpington region of the Northern Cape, South Africa. The weakly to undeformed, northwest-southeast trending granitoid body represents the most extensive member of the Keimoes Suite and intruded across the tectonic boundary between the granulite facies Kakamas and Areachap Terranes of the Namaqua-Natal Metamorphic Province during the final stages of the main Namaqua orogeny. The Friersdale Charnockite is a metaluminous, ferrous and potassic monzogranite with major, trace, REE and isotope chemistries suggesting a mixed crustal source with significant input from both Paleoproterozoic-and Mesoproterozoic-aged source regions.
机译：Friderdale Charnockite是一个晚期中古代（1078 +/- 10 ma），精细到中粒细胞，以卟啉单晶骨灰石侵入，与南非北开普省北部凯斯梅森顿地区的露头。 弱到未变形的西北 - 东南趋势花岗岩体代表了Keimoes套件中最广泛的成员，并且在南义奥因y的最终阶段期间，肉芽酸群地面Kakamas kakamas和Arachap地区的构造边界侵入 。 Friderdale Charnockite是一种金属丝，铁丝油，具有主要，痕迹，REE和同位素化学品，表明古普罗佐和中古代源区具有重要意义的混合地壳源。

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