Tectonics of the Scotia Arc, Antarctica: Punta Arenas, Chile to Ushuaia, Argentina January 1-February 1, 1989
Copyright 1989 by the American Geophysical Union.
Editor(s): Ian W. D. Dalziel, Krzysztof Birkenmajer, Constantino Mpodozis, Victor A. Ramos, Michael R. A. Thomson
Published Online: 22 MAR 2013
Print ISBN: 9780875905501
Online ISBN: 9781118670378
Book Series: Field Trip Guidebooks
About this Book
Published by the American Geophysical Union as part of the Field Trip Guidebooks Series, Volume 180.
The Scotia Ridge is the east-closing arcuate submarine topographic high linking the Andean Cordillera of South America to the Antarctic Peninsula (Fig. 1.1). The ridge emerges from the sea to form small but rugged islands: South Georgia on the North Scotia Ridge (Figs. 1.2 and 2.1; Pl. 1.1). All of these are displaced parts of the South American continent (South Georgia) or the Antarctic Peninsula (South Orkney and South Shetland Islands). The South Sandwich Islands that close off the Scotia Ridge in the east constitute one of the least mature intraoceanic island arc systems of the world. Eight of the eleven islands in the arc are presently volcanically active (Pl. 1.2).