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The paleoenvironmental significance of the nearshore Curvolithus ichnofacies

Martin G. Lockley, Andrew K. Rindsberg and Rose M. Zeiler
The paleoenvironmental significance of the nearshore Curvolithus ichnofacies
Palaios (1987) 2 (3): 255-262


Newly discovered Curvolithus-rich trace-fossil assemblages in fan-delta deposits of the Pennsylvanian Minturn Formation of Colorado are remarkably similar to several other Carboniferous deltaic ichnofaunas, as well as those from Jurassic fan-delta environments and other marginal-marine deposits with fresh-water influence. The Minturn trace fossils comprise the type assemblage of the Curvolithus ichnofacies, dominated by infaunal locomotion-feeding activity in environments characterized by relatively rapid deposition of sandy sediment exceeding physical reworking. The ichnofacies also occurs in sandy, low-energy, open-shelf environments. Thus, the ichnofacies is a paleo-energy and paleo-depositional rate indicator, and we predict that its occurrence in strongly localized deltaic and nearshore sandy facies recurs throughout the Phanerozoic.

ISSN: 0883-1351
Serial Title: Palaios
Serial Volume: 2
Serial Issue: 3
Title: The paleoenvironmental significance of the nearshore Curvolithus ichnofacies
Affiliation: Univ. Colo. at Denver, Geol. Dep., Denver, CO, United States
Pages: 255-262
Published: 1987
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 41
Accession Number: 1988-006086
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, block diag.
N39°19'60" - N39°55'00", W107°52'00" - W106°12'00"
Secondary Affiliation: Colo. Sch. Mines, USA, United States
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: 1988
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