Neoproterozoic Crust Formation and Terrane Suturing in the East African Orogen: Geological, Geochemical, and Geochronological Investigations in Madagascar

在前寒武纪晚期至寒武纪时期，马达加斯加位于东非造山带东部边缘附近的冈瓦纳内陆。由于东非造山带被认为是东部和西部冈瓦纳山脉之间的连接，对这个时代的岩石的研究在今天。马达加斯加可能会揭示一些重要的特征，这些特征对于理解超大陆的组合是至关重要的。本研究的主要目的是通过广泛使用同位素和地质年代学技术来确定东缘地体的性质、地体增生的时间和最终缝合。研究结果有望对东非裂谷的时间演化给出更准确的描述，并对马达加斯加在冈瓦纳超大陆中的位置有更好的了解。

9814373TuckerMadagascar was situated in the interior of Gondwana near the eastern edge of the east African orogen during late Precambrian to Cambrian time. As the east African orogen is thought to mark the join between east and west Gondwana, study of rocks of this age in present day. Madagascar may reveal important features essential for understanding the assembly of the supercontinent. The primary objectives of this study are to determine the nature of the terranes, timing of terrane accretion and terminal suturing in the eastern margin by extensive use of isotopic and geochronologic techniques. Results are expected to yield a more accurate picture of the temporal evolution of the east African rift, and an improved understanding of Madagascar's setting within the Gondwana supercontinent.