The Late Wisconsinan Savanna Terrace in Tributaries to the Upper Mississippi River
Bibliographic Data
| ID | 24088352 |
|---|---|
| Authors | Mark A Flock (University of Illinois Urbana-Champaign, corresponding author) |
| Year | 1983 |
| Volume | 20 |
| Issue | 2 |
| Pages | 165-176 |
| Publication date | 1983-09-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Quaternary Research (JOURNAL) |
| Journal identifiers | ISSN: 0033-5894 • E-ISSN: 1096-0287 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1016/0033-5894(83)90075-3 |
| OpenAlex | W2034489033 |
| Language | EN |
| Citations received | 7 |
| References cited | 14 |
The Savanna Terrace, composed of alternating red and gray clayey sediments of late Wisconsinan age, can be found in five states along the upper Mississippi valley from Pepin County, Wisconsin, to Jackson County, Illinois. The terrace is the highest glaciofluvial-lacustrine deposit without a loess cover in the upper Mississippi valley. Chemical, physical, and mineralogical data show that two different sources provided sediment. The red clay is believed to have come from Lake Superior sources, while the gray clay is believed to have come from sources farther west. Large-scale flood events from glacial Lakes Agassiz, Grantsburg, and Superior were probably the main contributors of the sediments. The red clay in the terrace is similar in composition to red glaciolacustrine sediment found in eastern and northern Wisconsin. It also is mineralogically similar to the Hinckley Sandstone and the Fond du Lac Formation, which occur under and around Lake Superior. Radiocarbon dates obtained from the lower Illinois valley indicate that the terrace sediments were deposited sometime between about 13,100 and 9500 yr ago. Soils developed on the terrace are variable in their physical, chemical, and mineralogical properties, which reflect the composition of the clayey sediments.
Alluvium · Archaeology · Floodplain · Fluvial · Geochemistry · Geomorphology · Loess · Quaternary · Radiocarbon dating · River terraces · Sediment · Structural basin · Terrace (agriculture) · Tributary · Botany, Ecology, and Taxonomy Studies · Geology · Geology and Paleoclimatology Research · Paleontology · Water Quality and Resources Studies
Petaloid Organs Preserved in an Arctic Plant Macrofossil Assemblage from Full-Glacial Sediments in Southeastern Minnesota
Source and Origin of Roxana Silt and Middle Wisconsinan Midcontinent Glacial Activity
Charcoal Versus Manganese Mineral Wad and the Geochronology of the Kimmswick Clovis Site
Pollen studies at Lake St Croix, a river lake on the Minnesota/Wisconsin border, USA
Geoarchaeology of dissected loess uplands in Western Illinois
Holocene Mississippi River floods and geoarchaeological site formation processes in the Sny Bottom, western Illinois, USA
Petrographic Analysis of Late Woodland and Middle Mississippian Ceramics at the Iva Site (47Lc42), Onalaska, Wisconsin
| Unique citing works | 7 |
|---|---|
| Citations per year | 0,19 |
| Citation span | 1989 - 2017 (29) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 5 |