Scientific Quarterly Journal of Geosciences

Scientific Quarterly Journal of Geosciences

Early to Middle Devonian Conodonts from Central Iran

Document Type : Original Research Paper

Author
Geological Survey of Iran, Tehran, Iran
Abstract
This paper deals with the Lower to Middle Devonian conodonts from Zarand area northern Kerman. About one hundred samples have been collected for systematic studies, as well as age determination. The samples have been prepared and were analyzed in the conodont laboratory of the Geological Survey of Iran. According to lithostratigraphic studies three litho- biozones have been distinguished:
Zone I: Consists of mainly gypsum or gypsiferous shale, reddish in colour.
Zone II: Consists of light- grey darkish grey limestone, and yielded the following conodonts: Mo Pandorinellina exigua exigua Philip, 1966. Pandorinellina exigua philipi Klapper, 1969. Ozarkodina confluens Branson and Mehl, 1933. Ozarkodina remscheidensis remscheidensis Ziegler, 1960. Ozarkodina remscheidensis Walliser, 1964. Pandorinellina steinhornensis Zeigler, 1956.
Age: Early Devonian
Zone III: Consists of red sandstone with intercalation of calcareous sandstone and dolomite.
This zone has yielded the following conodonts:
Bipennatus bipennatus Bischoff and Ziegler, 1957. Bipennatus bipennatus bipennatus Bischoff and Ziegler, 1957. Bipennatus sp.
Icriodus expansus Branson and Mehl, 1938. Icriodus brevis Stauffer, 1940. Icriodus struvei Weddige, 1977. Icriodus brevis spicatus Youngquist and Peterson, 1947.
Age: Middle Devonian.
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Volume 6, 21-22
Autumn & Winter 1997, vol. 6, No. 21-22
Winter 1997
Pages 78-87