Matanuska River 8727
Matanuska may refer to: *Matanuska Formation, the northern Chugach Mountains, Alaska *Matanuska Glacier, in the Chugach Mountains, Alaska *Matanuska River, in Alaska *Matanuska-Susitna Borough, Alaska, in Alaska *Matanuska-Susitna Valley Matanuska-Susitna Valley () (known locally as the Mat-Su or The Valley) is an area in Southcentral Alaska south of the Alaska Range about north of Anchorage, Alaska. It is known for the world record sized cabbages and other vegetables displaye ..., in Alaska * Matanuska Valley Colony in Alaska * M/V Matanuska, a vessel in the Alaska Marine Highway System * Matanuska (crater), an impact crater on the minor planet 253 Mathilde {{disambig ...
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Matanuska Formation
The Matanuska Formation consists of more than of sedimentary strata exposed in the northern Chugach Mountains, Matanuska Valley, and southern Talkeetna Mountains of South-Central Alaska. The Matanuska Formation contains strata from Early Cretaceous (Albian) to Late Cretaceous ( Maestrichtian). Parts of the formation contain abundant marine mollusks, foraminifera, and radiolaria. Fossils of non-marine plants are found in some beds. Fossils of two dinosaurs have been recovered from marine mudstones in the formation. The lower Matanuska Formation (MF) is several hundred meters thick and includes non-marine and marine sediments. Campanian-Maastrichtian graded sandstone, conglomerate, and mudstone comprise the upper 2000 meters of the Formation. Invertebrate paleofauna Annelida Calcareous worm tube fossils are known from the formation. Bivalves Cephalopods The formation's thin shelled heteromorphic ammonites probably lived at depths of 36–183 m. The formation's ammonites gen ...
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