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boundary of the Lagro
Formation. Patches of low relief disintegration hummocks that characterize the surface of the Trafalgar Formation are drained internally; in contrast similar features that have been recognized on the Lagro are part of an embryonic surface drainage system. The differences in lithology clearly correlate with differences in permeability. In addition to a few long, narrow, shallow, generally till floored channels that cross the till plain between the Union City and
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of silt and clay could have spread across thin dead ice heavily loaded with sandy and stony till without causing it to become active again. Such a history would account for the loss of active ice features along the Union City
Moraine in Delaware County and the presence of Lagro till on most of the segments of the Muncie esker system.
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it probably overrode thin debris-charged stagnant ice. Gravel-filled channels in the dead ice mass were not destroyed by the overriding glacier, but a veneer of clayey till was spread over them as well as over the supporting stagnant ice. A thin and highly mobile ice lobe carrying a small debris load
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esker system are capped with the same till. Northwest of
Alexandria the edge of the Lagro till is distinct and readily mapped along the low Union City Moraine but from Alexandria to eastern Delaware County the moraine ceases to look like an active ice feature and seems to merge with the dead ice
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North of the edge of overlap by the Lagro
Formation, ice-disintegration ridges change character because of the changes in till lithology, and long, narrow, shallow ice-walled channels extend across the till plain. These channels are floored with Lagro till, although in many gravel lies below the
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road cuts indicates that the clayey till is present there, but is generally less than 3 feet (0.91 m), thus within the leached portion of the soil profile. The stagnant ice features on the surface of the
Trafalgar Formation in east central Indiana take on a different appearance north of the
51:. The moraine has no significant feature, but represents a late surge in the glacial lobe. The moraine in east-central Indiana is covered with low relief ice-disintegration ridges and hummocks crossed by many ice-walled channels and eskers. This creates a rugged terrain in southern
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and several large shallow boggy areas, two other groups of geomorphic features ascribable to glacier stagnation are present in that area. These are the Muncie esker system and a pair of ice-walled troughs in southern Grant County.
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Moraines south of Lake
Michigan and southwest of Lake Erie. A composite of three maps (Leverett 1915) (Leverett 1902) (Larsen 1986) and other sources. Colors represent moraines from the same time period of the Wisconsin Glacial
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The Erie Lobe Margin in East-Central
Indiana, During the Wisconsin Glaciation; William J. Wayne, Indiana Geological Survey; State Geologist, Geological Survey, Department of Natural Resources of Indiana; ca
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The
Pleistocene of Indiana and Michigan and the History of the Great Lakes, Monograph 53; Frank Leverett & Frank B. Taylor, U.S. Geological Survey; Government Printing Office, Washington; 1915, pg 167
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topography of that region. In its advance to the Union City
Moraine, the glacier crossed terrain free of ice except for a few scattered blocks northwest of Alexandria, but from Alexandria to eastern
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44:. From Muncie, the moraine runs northwest ending in the bluffs overlooking Pipe Creek at Bunker Hill, Indiana, just south of Peru on the Wabash River.
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Glacial Map of the United States East of the Rocky
Mountains, U.S. Geological Survey, Department of the Interior
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Its clay-rich lithology contrasts greatly with the underlying sandy and silty till. Reexamination of western
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The ‘’’Union City Moraine’’ is the outer ring of a series of moraines created by the Huron-Erie lobe of the
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36:. Traveling southwestward and arcing a little northward, the moraine reaches
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for which it is named. From here, it travels almost directly westward to
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55:. Most of the ice-walled channels end at the proximal edge of the
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Rand McNally Road Atlas, Rand McNally Co; Chicago, IL,
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24:and the highest point in that state, (
276:Landforms of Delaware County, Indiana
256:Geological history of the Great Lakes
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28:, 1,549 feet (472 m)) towards
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59:. Two major esker systems, one at
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271:Landforms of Darke County, Ohio
266:Landforms of Logan County, Ohio
98:till, and some segments of the
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148:List of glacial moraines
20:begins in Ohio, east of
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91:Mississinawa Moraines
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138:Mississinawa Moraine
251:Moraines of Indiana
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57:Knightstown Moraine
143:Union City Moraine
123:Fort Wayne Moraine
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49:Laurentian Glacier
227:40.250°N 84.667°W
133:Salamonie Moraine
63:and the other at
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261:Moraines of Ohio
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118:Defiance Moraine
38:Union City, Ohio
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232:40.250; -84.667
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105:Delaware County
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53:Delaware County
42:Muncie, Indiana
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128:Wabash Moraine
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86:Wabash County
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26:Campbell Hill
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22:Bellefontaine
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18:Union Moraine
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34:Darke County
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71:Description
245:Categories
154:References
30:Greenville
112:See also
61:Anderson
218:84°40′W
215:40°15′N
100:Muncie
65:Muncie
80:epoch
188:1970
16:The
32:in
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193:^
180:^
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