Tinley moraine, a glacial feature of Illinois & Indiana. Based on Publication 6876-12989-1-PB; The Tinley Moraine in Indiana; Allan F. Schneider; Indiana Geological Survey; Indianapolis, Indiana; undated
There is little difference between the soils mixture of the Tinley Moraine and the Valparaiso Moraine. There is a greater quantity of silt and clay similar to a fine grained lake sediments. The clay-rich and pebble-poor till implies that existence of a glacial lake on the margin of the ice.  The till mixture predates the Lake Chicago beaches, of which the Glenwood Beach is the oldest and contemporary with the Lake Border Moraine along the Michigan shore. The Tinley Moraine would be an earlier recession of the Michigan Lobe a short ways north, returning southward, with both wind and water driven drifts, mixed with the return of the ice front for a short duration before the northward retreat of the ice front, establishing the Lake Chicago sequence of shorelines and moraine features in northern Wisconsin and Michigan.  The impounded meltwater trapped between the ice front and the Valparaiso Moraine, found a breach in the moraine east of the Illinois-Indiana boundary following West Creek into the sluiceway of the Kankakee River. An additional release may have been in the vicinity of the Deep River – Stoney Run divide east of Crown Point.