| Locality | Latitude | Longitude | Distance | Bearing |
|---|
| Peerless Portland Cement Company Shale pit, Branch County, Michigan, USA | 42° 2' 20" N | 85° 7' 9" W | 19.2km (11.9 miles) | |
| William Case Marl Pit, Calhoun County, Michigan, USA | 42° 5' 39" N | 85° 7' 30" W | 22.4km (13.9 miles) | |
| David Allwood pit (David Alwood), Calhoun County, Michigan, USA | 42° 6' 39" N | 85° 7' 9" W | 24.0km (14.9 miles) | |
| Hayward Dry Marl Pit, Kalamazoo County, Michigan, USA | 42° 7' 50" N | 85° 30' 14" W | 24.2km (15.0 miles) | |
| Kerr pit (Robert Kerr Peat and Marl), St. Joseph County, Michigan, USA | 41° 56' 48" N | 85° 39' 20" W | 27.4km (17.0 miles) | |
| Drake Marl pit (Coy Drake), St. Joseph County, Michigan, USA | 42° 2' 26" N | 85° 39' 33" W | 29.1km (18.1 miles) | |
| Harmon Marl Quarry (Taylor & Son), Branch County, Michigan, USA | 41° 48' 11" N | 85° 0' 36" W | 31.3km (19.4 miles) | |
| Marl Lake, St. Joseph County, Michigan, USA | 41° 46' 18" N | 85° 36' 55" W | 31.7km (19.7 miles) | |
| Garman Pit, Steuben County, Indiana, USA | 41° 42' 25" N | 85° 7' 38" W | 32.4km (20.1 miles) | |
| Wolverine Portland Cement Company Shale pit, Coldwater, Branch County, Michigan, USA | 41° 54' 34" N | 84° 55' 5" W | 34.1km (21.2 miles) | |
| Lagrange County Highway Department, Lagrange County, Indiana, USA | 41° 38' 42" N | 85° 25' 0" W | 35.7km (22.2 miles) | |
| Lake James, Pokagon State Park, Steuben County, Indiana, USA | 41° 41' 47" N | 85° 2' 3" W | 37.8km (23.5 miles) | |
| Cass Lake Quarry, Lagrange County, Indiana, USA | 41° 42' 1" N | 85° 38' 35" W | 39.0km (24.2 miles) | |
| Miller Marl Pit, Lagrange County, Indiana, USA | 41° 41' 25" N | 85° 38' 13" W | 39.5km (24.5 miles) | |
| Miller Pit (Fought Pit), Noble County, Indiana, USA | 41° 31' 59" N | 85° 28' 55" W | 49.1km (30.5 miles) | |
| Fought Marl Pit, Lagrange County, Indiana, USA | 41° 32' 17" N | 85° 32' 24" W | 50.0km (31.1 miles) | |
| Pipher's Marl Quarry, Cass County, Michigan, USA | 42° 2' 4" N | 85° 55' 29" W | 50.3km (31.3 miles) | |
| Alpha Portland Cement Company Clay pit, Calhoun County, Michigan, USA | 42° 23' 44" N | 85° 2' 54" W | 53.7km (33.4 miles) | |
| Shield Brother's Clay Pit, Kalamazoo County, Michigan, USA | 42° 21' 20" N | 85° 44' 44" W | 56.2km (34.9 miles) | |
| Bellevue Stone Products quarry, Bellevue, Eaton County, Michigan, USA | 42° 25' 45" N | 85° 2' 13" W | 57.5km (35.7 miles) | |
| John Hess Marl pit, Hillsdale County, Michigan, USA | 42° 2' 20" N | 84° 37' 30" W | 58.5km (36.4 miles) | |
| Holden Quarry, Bellevue, Eaton County, Michigan, USA | 42° 26' 18" N | 85° 1' 59" W | 58.5km (36.4 miles) | |
| Elkhart County Highway Department, Elkhart County, Indiana, USA | 41° 35' 12" N | 85° 49' 59" W | 59.0km (36.7 miles) | |
| Cheney Quarry, Bellevue, Eaton County, Michigan, USA | 42° 26' 48" N | 85° 2' 6" W | 59.3km (36.9 miles) | |
| Leonard Brothers Clay pit, Barry County, Michigan, USA | 42° 30' 20" N | 85° 24' 0" W | 61.2km (38.0 miles) | |
| Prather Farm bog iron locality, Lagrange Township, Cass County, Michigan, USA | 41° 54' 28" N | 86° 3' 51" W | 61.4km (38.2 miles) | |
| Olivet Brick & Tile Company Clay Pit, Eaton County, Michigan, USA | 42° 26' 49" N | 84° 56' 15" W | 63.0km (39.2 miles) | |
| Unnamed gravel pit, Dowagiac, Cass County, Michigan, USA | 42° 0' 23" N | 86° 5' 5" W | 63.0km (39.2 miles) | |
| Zenith Portland Cement Company Clay Pit, Jackson County, Michigan, USA | 42° 8' 49" N | 84° 35' 59" W | 63.4km (39.4 miles) | |
| Unnamed clay prospect (MRDS - 10170721), Cass County, Michigan, USA | 41° 59' 9" N | 86° 5' 30" W | 63.5km (39.4 miles) | |
