Fine‐grained agglutinated elongate columnar stromatolites: Tieling Formation, ca 1420 Ma, North China

The Mesoproterozoic Tieling Formation, near Jixian, northern China, contains thick beds of vertically branched, laterally elongate, columnar stromatolites. Carbonate mud is the primary component of both the stromatolites and their intervening matrix. Mud abundance is attributed to water column ‘whit...

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Bibliographic Details
Published in:Sedimentology 2017-06, Vol.64 (4), p.871-902
Main Authors: Tosti, Fabio, Riding, Robert, Pufahl, Peir
Format: Article
Language:English
Subjects:
Agglutinated
branching
China
elongation
lamination
Mesoproterozoic
microfabric
morphology
stromatolite
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Summary:The Mesoproterozoic Tieling Formation, near Jixian, northern China, contains thick beds of vertically branched, laterally elongate, columnar stromatolites. Carbonate mud is the primary component of both the stromatolites and their intervening matrix. Mud abundance is attributed to water column ‘whiting’ precipitation stimulated by cyanobacterial photosynthesis. Neomorphic microspar gives the stromatolites a ‘streaky’ microfabric and small mud flakes are common in the matrix. The columns consist of low‐relief, mainly non‐enveloping, laminae that show erosive truncation and well‐defined repetitive lamination. In plan view, the columns form disjunct elongate ridges
ISSN:0037-0746
1365-3091
DOI:10.1111/sed.12336