Environmental Engineering Reference
In-Depth Information
Age
(approximate
years before
present)
Unit name
<10,000
Holocene
Qaa — Recent Rouge River fluvial deposits
Qllu — Glacial lacustrine beach deposit Lake Lundy
Qlsg — Glacial lacustrine beach deposit Lake Grassmere
Qlswa — Glacial lacustrine beach deposit Lake Wayne
Qlc — Glacial lacustrine clay
Qll — Glacial lacustrine silty clay
Qws — Glacial lacustrine beach ridge Lake Whittlesey
Qlsla — Glacial lacustrine sand, lowest Lake Arkona
Qlsha — Glacial lacustrine sand, highest Lake Arkona
Fluvial
<14,500
Qv — Varves
Qlahm — Glacial lacustrine sandy clay Maumee Lake deposit
Qma — Glacial lacustrine beach highest Lake Maumee
Qmbw — Birmingham waterlaid moraine
Qmb — Birmingham Moraine
Moraine
<14,500
Delta
Outwash
Esker
<14,500
Qmd — Delta
Qmd — Outwash defiance
Qme — Esker
Qmdi — Inner Defiance Moraine
Qmdo — Outer Defiance Moraine
Qow — Outwash Fort Wayne
Qmk — Kame
Qmt — Kettle
<14,500
<14,500
Moraine
<14,500
Glacial
outwash
Kame
Kettle
<14,500
<14,500
<14,500
Qmf — Fort Wayne Moraine
Qmg — Ground moraine / lodgement till
Moraine
<14,500
Unconformity
Fluvial
22,000
Qfa — Fluvial (interglacial) >22,000 ybp
Qmo — Pre-late Wisconsinan glacial till depost > 22,000 ybp
Unconformity
Moraine
22,000
Unconformity
345,000,000
Ms — Sunbury shale
345,000,000
Mbd — Bedford shale
Senecan
350,000,000
Da — Antrim shale
Erian
355,000,000
Dt — Traverse group
Erian
360,000,000
Dd — Dundee limestone
Ultsterian
370,000,000
Ddr — Detroit River formation
FIGURE 5.21
(See color insert.)
Stratigraphic column of Rouge River watershed in southeastern Michigan. (From Rogers,
D.T., Surficial geologic map of the Rouge River watershed in southeastern Michigan, Wayne County, MI, Map
Scale 1:62,500, 2 Sheets, 1997.)
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