Definition of Illinoian in English:
Illinoian
adjectiveˌɪlɪˈnɔɪ(j)ənˌiləˈnoiən
Geology 1Relating to or denoting a Pleistocene glaciation in North America, preceding the Wisconsin and approximating to the Saale of northern Europe.
Example sentencesExamples
- The forest studied in Pike County, Illinois was on Illinoian glacial till in the Glaciated Section of the Mississippi River Border Division.
- The Labradorean domain was more extensive in Minnesota and Illinois during the Illinoian glaciation than in the Wisconsinan glaciation.
- During glacial retreat in the second of three advances, the flat Illinoian till plain was lain down in the lower third of the state north of Shawnee Hills.
- These well-drained, sloping soils developed on Illinoian glacial till overlain with loess and have a compact fragipan that restricts root growth.
- This preserve is located on a käme (a hill or mound of stratified drift deposited by glacial meltwater) formed during the Illinoian glacial epoch.
- 1.1as noun the Illinoian The Illinoian glaciation or the system of deposits laid down during it.
Origin
Mid 19th century: from Illinois + -an.