. The fluorspar deposits of southern Illinois . ecflo \ ~Y v>v. -1- S^ I . _ _. I lUJPS^ O or Ri\\v^« -/c ^ X. LEGEND JULIUS BIEN »CO. LiTH, N.^ • ivlaceousand Ierliars- Pennsvhmiian/ [iianorebeanru:/ J Devonianf BiadislcUe) Dikes GENERMJZED GEOLOGIC MAPKENTUCK\-ILLIN01S FLUORSPAR UISTRRT 15 lO Scale 15 miles BAIN.] PHYSIOGRAPHY. 15 counties by Karbers Ridge, and its northern limit is defined by theSouth Fork of Saline River and certain tributaries of the Big Interior Lowland has in this area a general altitude of 500 merges with the Gulf Plains a
. The fluorspar deposits of southern Illinois . ecflo \ ~Y v>v. -1- S^ I . _ _. I lUJPS^ O or Ri\\v^« -/c ^ X. LEGEND JULIUS BIEN »CO. LiTH, N.^ • ivlaceousand Ierliars- Pennsvhmiian/ [iianorebeanru:/ J Devonianf BiadislcUe) Dikes GENERMJZED GEOLOGIC MAPKENTUCK\-ILLIN01S FLUORSPAR UISTRRT 15 lO Scale 15 miles BAIN.] PHYSIOGRAPHY. 15 counties by Karbers Ridge, and its northern limit is defined by theSouth Fork of Saline River and certain tributaries of the Big Interior Lowland has in this area a general altitude of 500 merges with the Gulf Plains along a sinuous line marking the over-lap of Tertiary deposits upon an erosion plain beveling older abuts sharply against the Ozark Plateau, which rises abruptly200 to 250 feet above it, and which also overlooks the Prairie Plainsto the north, which lies here at a general altitude of about 450 the Interior Lowland and the Gulf Plains the Ohio and otherrivers of the district have cut important channels to a general con-trolling base of 300 feet. TOPOGRAPHY. Karbers Ridge.—Crossing the
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Keywords: ., bookauthorge, bookcentury1900, bookdecade1900, booksubjectgeology
