Lake Sakakawea is a large reservoir in the north central United States, impounded in 1953 by Garrison Dam, a U.S. Army Corps of Engineers dam located in the Missouri River basin in …

20-meter high (65 feet), vertical bluffs of Lake Sakakawea in Mercer and McLean Counties. One Paleocene formation, the Sentinel Butte, outcrops in the study area. The six late Cenozoic …

The Oahe Formation (late Wisconsinan and Holocene) is mainly wind-blown silt. It is found on the hilltops and in gentle depressions. The characteristics of the four members (the Mallard Island, …

The Quaternary stratigraphy of central North Dakota is best exposed along the nearly continuous, 20-meter-high, vertical bluffs of Lake Sakakawea in the Missouri River trench.

Two-foot diameter concretions from the Bullion Creek Formation, Theodore Roosevelt National Park. Concretions in the Sentinel Butte Formation, Lake Sakakawea. Small stem-cast concretion.

The bluffs of Lake Sakakawea, west- central North Dakota, provide excellent exposures of the Paleocene Sentinel Butte Formation and Pleistocene glacial deposits of the Coleharbor Group. …

沙卡卡威亞湖（英語： Lake Sakakawea ） [2] 是一個位於美國 北達科他州 密蘇里河流域的潟湖，該湖分屬六個郡，分別是：鄧恩郡、麥肯齊郡、麥克萊恩郡、默瑟郡、芒特雷爾郡以及威廉 …

2023年2月13日 · Lake Sakakawea is a large reservoir created by the Garrison Dam's construction on the Missouri River in the north-central portion of the United States. Named after the native …

Sentinel Butte Formation. The Sentinel Butte Formation consisted of layers of silt, clay, sand, lignite, carbonaceous shale, and mudstone. The geotechnical materials below the mudline of …

2023年11月7日 · Lake Sakakawea is not a natural formation, of course. It was created as a result of the Garrison Dam. Before the Garrison Dam was built in 1947, the Missouri River lazily …