Terrane correlation between Antarctica, Mozambique and Sri Lanka: Comparisons of geochronology, lithology, structure and metamorphism

Summary Analysis of lithological, structural, metamorphic and geochronological data from mapping in Mozambique permits recognition of two crustal blocks separated by the Lurio Belt. Comparison of the data, with data from Sri Lanka and Dronning Maud Land (DML) permits recognition of similar blocks in...

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Bibliographic Details
Main Authors: A. Bisnath, V. Manhica, Council For Geoscience Bellville South
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Subjects:
Dronning Maud Land
Antarc*
Antarctica
DML
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.579.9527
http://pubs.usgs.gov/of/2007/1047/ea/of2007-1047ea004.pdf
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Summary:Summary Analysis of lithological, structural, metamorphic and geochronological data from mapping in Mozambique permits recognition of two crustal blocks separated by the Lurio Belt. Comparison of the data, with data from Sri Lanka and Dronning Maud Land (DML) permits recognition of similar blocks in Sri Lanka and DML. Data interpretation suggests they once formed a mega-nappe, comprising part of northern Gondwana, emplaced ~600 km over southern Gondwana during final Gondwana amalgamation at ~590-550 Ma. The data suggest deeper levels of erosion in southern Africa compared to Antarctica. It is possible this event extends westwards to the Namibian Damara orogeny with the similar age Naukluft nappes fitting the mega-nappe pattern. Erosional products of the mountain belt are now represented

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