Fish suggests continental connections between the Indochina and South China blocks in Middle Devonian time

A yunnanolepiform antiarch (placoderm fish) is recorded from the Givetian Dong Tho Formation of Quang Binh Province, central Vietnam. This and other fishes from the same locality occur in marginal marine, detrital facies, with plant remains and lingulid brachiopods that indicate a nearshore to delta...

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Bibliographic Details
Published in:Geology (Boulder) 1996-06, Vol.24 (6), p.571-574
Main Authors: Thanh, Tong-Dzuy, Janvier, Philippe, Phuong, Ta Hoa
Format: Article
Language:English
Subjects:
Asia
biogeography
biostratigraphy
Brachiopoda
China
Chordata
clastic rocks
correlation
deltaic environment
Devonian
Dong Tho Formation
Far East
Fish
Geological time
Givetian
Indochina Block
Marine
Middle Devonian
nearshore environment
paleogeography
Paleontology
Paleozoic
Pisces
Placodermi
Plate tectonics
Quang Binh Vietnam
sandstone
sedimentary rocks
South China Block
Stratigraphy
Vertebrata
vertebrate
Vietnam
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Summary:A yunnanolepiform antiarch (placoderm fish) is recorded from the Givetian Dong Tho Formation of Quang Binh Province, central Vietnam. This and other fishes from the same locality occur in marginal marine, detrital facies, with plant remains and lingulid brachiopods that indicate a nearshore to deltaic environment. Yunnanolepiform antiarchs were hitherto known exclusively from the Lower Devonian of the South China block. The new occurrence of this group well south of the Song Ma suture suggests close links between the Indochina and South China blocks in Middle Devonian time. The massive sandstone exposures of the Dong Tho Formation may be a southern extension of the Do Son Sandstone Formation of the Hai Phong area, which is located on the South China block. June 1996
ISSN:0091-7613
1943-2682
DOI:10.1130/0091-7613(1996)024<0571:FSCCBT>2.3.CO;2