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GEOREF RECORD

Environmental analysis of a Twocreekan-aged beetle (Coleoptera) assemblage from Kewaunee, Wisconsin

Clarke E. Garry, Robert W. Baker, Donald P. Schwert and Allan F. Schneider
Environmental analysis of a Twocreekan-aged beetle (Coleoptera) assemblage from Kewaunee, Wisconsin (in Late Quaternary history of the Lake Michigan basin, Allan F. Schneider (editor) and Gordon S. Fraser (editor))
Special Paper - Geological Society of America (1990) 251: 57-65

Abstract

A Twocreekan organic horizon, which is underlain by till of the Haven Member and overlain by till of the Two Rivers Member of the Kewaunee Formation, was investigated near Kewaunee, Wisconsin. Wood from this horizon was dated at 11,700 + or - 110 B.P. (ISGS-1061) and 11,650 + or - 170 B.P. (ISGS-1234). The insect fauna from the Kewaunee site has many elements in common with the insects from the type section of the Two Creeks Forest Bed, 14 km to the south. These include the northwestern carabid Asaphidion yukonense, northern carabids Carabus taedatus and Bembidion grapii, and the northern staphylinid Acidota quad rata. In contrast, the Kewaunee site fauna appears to have inhabited a somewhat colder environment, as suggested by the occurrence of the carabids Cymindis unicolor and Pterostichus (Cryobius) spp. We interpret the Kewaunee specimens of aquatic, water-marginal, and upland species to represent an allochthonous rather than an autochthonous assemblage.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 251
Title: Environmental analysis of a Twocreekan-aged beetle (Coleoptera) assemblage from Kewaunee, Wisconsin
Title: Late Quaternary history of the Lake Michigan basin
Author(s): Garry, Clarke E.Baker, Robert W.Schwert, Donald P.Schneider, Allan F.
Author(s): Schneider, Allan F.editor
Author(s): Fraser, Gordon S.editor
Affiliation: Univ. Wis.-River Falls, Dep. Biol., River Falls, WI, United States
Affiliation: Univ. Wis.-Parkside, Dep. Geol., Kenosha, WI, United States
Pages: 57-65
Published: 1990
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 0-8137-2251-9
References: 37
Accession Number: 1990-058869
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 2 tables, 1 plate, strat. col., sketch maps
N43°55'00" - N44°19'60", W88°04'60" - W87°30'00"
N41°00'00" - N50°00'00", W93°00'00" - W75°00'00"
N44°17'60" - N44°40'00", W87°45'00" - W87°19'60"
Secondary Affiliation: Indiana Geol. Surv., USA, United StatesN.D. State Univ., USA, United StatesUniv. Wis.-Parkside, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1990
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