Main stops for this trip

Stop 1.

Tower Hill is a drumlin that is oriented east -west. The steep side is to the east. The ice was moving from the east to the west


The view from Tower Hill is to the North. The Lannon Stone quarries are seen on the horizon


Stop 2

Lannon Stone is a Silurian age dolostone, although most locals call it limestone. It is used extensively for homes , buildings and stone walls throughout S.E. Wisconsin.



The surface rock at this quarry shows glacial striations that are oriented east-west. This part of Wisconsin was covered by the Lake Michigan Lobe of ice.

The Town of Lannon has many such quarries, because the bedrock is close to the surface.

These Silurian Dolostones frequently have good fossils, such as Cephalopods. Both the Milwaukee Public Museum downtown and The Green Gallery at UWM have good collections of these local fossils

Stope 3.

This site, which is owned by American Asphalt, is an example of a kame or outwash feature. This was produced by flowing water near the margins of the ice. One can note stratification in the sediments along the far wall.

The size of this deposit is about 1/4 mile by 1/4 mile as noted on the map. The town of Hubertus also has several buildings made of the glacial cobbles from this type of site.


Stop 4

At this point, we travel over a very narrow land bridge, which is probably a crevass filling in the ice. This is seen on the map where the road traverses the swampy area in the center of the map.


Stop 5.

Holy Hill provides a grand view of the counrtyside. To the west, one can look at the flat ground moraine of the Green Bay Lobe. To the southeast, one can see downtown Milwaukee. Holy Hill sits on top of one of many Moulin Kames in this area. Moulin Kames are somewhat cone shaped, and produced when water flowing from the top of the ice swirls down a hole in the ice and deposits a pile of debris.