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GEOREF RECORD

Biostratinomic processes for the development of mud-cast logs in Carboniferous and Holocene swamps

Robert A. Gastaldo, Timothy M. Demko, Yuejin Liu, William D. Keefer and Susan L. Abston
Biostratinomic processes for the development of mud-cast logs in Carboniferous and Holocene swamps
Palaios (September 1989) 4 (4): 356-365

Abstract

Prostrate trees are common features of fossil forest litters, and are frequently preserved as mud-casts. Specimens of Carboniferous mud-cast trees and a mud-filled "incipient cast" of a Holocene Taxodium have been investigated to determine the biostratinomic processes responsible for their formation. These processes are complex. Hollowing of tree trunks may take place during life or by degradation after death. Once the trunk has fallen, the hollow cavity is supported by surrounding wood and/or bark tissues and acts as a conduit for sediment-laden waters. Leaf litter may be preserved on bedding surfaces. The infilling sequence of horizontal, parallel bedded, fine-grained sediment is deposited from suspended load during multiple overbank flooding events. These results differ from experimentally produced "pith casts" in which the sediment grain size is of fine sand. In Holocene specimens, alluvial mud within the log may provide a substrate for infaunal invertebrates. No evidence of infaunal burrowing in Carboniferous analogues exists.


ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 4
Serial Issue: 4
Title: Biostratinomic processes for the development of mud-cast logs in Carboniferous and Holocene swamps
Affiliation: Auburn Univ., Dep. Geol., Auburn, AL, United States
Pages: 356-365
Published: 198909
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 20
Accession Number: 1990-008503
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch maps
N30°00'00" - N35°00'00", W88°30'00" - W85°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 1990
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