Late Paleozoic Pseudoalbaillellid Radiolarians from Southernmost Chile and Their Geological Significance

  1. Garry D. Mckenzie
  1. Hsin Yi Ling1 and
  2. Randall D.. Forsythe3

Published Online: 21 MAR 2013

DOI: 10.1029/GM040p0253

Gondwana Six: Structure, Tectonics, and Geophysics

Gondwana Six: Structure, Tectonics, and Geophysics

How to Cite

Ling, H. Y. and Forsythe, R. D.. (1987) Late Paleozoic Pseudoalbaillellid Radiolarians from Southernmost Chile and Their Geological Significance, in Gondwana Six: Structure, Tectonics, and Geophysics (ed G. D. Mckenzie), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM040p0253

Author Information

  1. 1

    Department of Geology, Northern Illinois University, Dekalb, Illinois 60115

  2. 3

    Lamont-Doherty Geological Observatory, Columbia University, Palisades, New York 10964

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1987

ISBN Information

Print ISBN: 9780875900643

Online ISBN: 9781118664483

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Keywords:

  • Gondwana Geology)—Congresses;
  • Geology,Structural—Congresses

Summary

Details of late Paleozoic (Late Carboniferous and Early Permian) radiolarians from Isla Madre de Dios and Isla Regalada of southernmost Chile are presented for the first time, and their faunal compositions compared with those of the published records. One new species, Pseudo-albaillella chilensis, and one new subspecies, Ps. u-forma reflexa are proposed. Ages suggested by these findings, having older (Late Carboniferous) age limits for the Madre de Dios Archipelago and younger (Early Permian) for Regalada Island, support a S to SE younging pattern for the timing of accretion and the material accreted for the forearc terrane. The trend may be continued into the Antarctic Peninsula, where even younger Triassic radiolarian chert has been reported.