...G. W. MONAGHAN; G. J. LARSON; G. D. GEPHART Abstract Three Lake Michigan Lobe till sheets are exposed in a 20- to 25-m-high section (Glenn Shores section) along the Lake Michigan shoreline in southwestern Michigan. The Glenn Shores till (lowest) is directly overlain by stratified silt, sand...

... of Petroleum Geologists The oil fields in southwestern Michigan produce from Middle Devonian limestone at the top of the Traverse group. 3 The upper part of the Traverse (Upper Devonian “Squaw Bay” limestone) is not found in southwestern Michigan. The irregularity and spottiness of the producing...

...Margaret Stearns Bishop ABSTRACT The current wildcatting campaign in southwestern Michigan has revealed many irregularities in the interval between the “Red Rock” horizon at the base of the Coldwater formation of Mississippian age, and the Traverse limestone of Devonian age. It is the purpose...

... of the Guelph Formation, Michigan Basin, southwestern Ontario, L’étude régionale de la Formation de Guelph (Silurien moyen) de la subsurface du sud-ouest de l’Ontario souligne le rôle de la recristallisation durant la diagenèse d’enfouissement pour produire des dolomies massives avec des éléments...

...Edward W. Kempema; Erk Reimnitz; Peter W. Barnes Abstract Anchor ice, i.e., ice attached to the bed in a lake, stream, or ocean, is common in the nearshore zone of southwestern Lake Michigan during winter. Lacustrine anchor ice has at least four distinct morphologies and was observed on sand...

...G. S. Fraser; N. C. Hester Abstract Seven different sedimentary environments occur in the beach-ridge complex along the southwestern shore of Lake Michigan. Poorly sorted gravel and sandy mud form colluvium along the base of slopes. Cross-bedded sands occur as channel deposits, and interbedded sand...

...J. R. Kramer Abstract Calcite, dolomite, insoluble residue, and clay minerals of lower Salina (A 1 and A 2 ) and upper Niagaran rocks of southwestern Ontario and Michigan were analyzed. Analysis of variance, trend surface analysis, and factor analysis were carried out on the above constituents...

... taken foremost position. The year established a definite Traverse producing area of regional magnitude in the southwest part of the state and set up a rivalry for supremacy between the shallow fields of southwestern Michigan and the deeper producing areas of the “Basin.” The other active fields...

...G. W. MONAGHAN; G. J. LARSON Abstract Clay-mineral analyses have been used to define two Late Wisconsinan till sheets of the Saginaw Lobe in southwestern Michigan. Bedford till can be traced along the ground surface from the Lansing Moraine southward to exposures within the Kalamazoo Moraine...

.... In southwestern Michigan, the South Zeeland and North Bangor fields were discovered and partially developed. Oil production was more than 21,750,000 barrels, an increase of 23 per cent over 1941 and only approximately 1,750,000 barrels less than the state’s greatest production in 1939. Gas-well completions...

... basin. Gas and oil have been produced from the Cataract formation and Niagara group in fields in southwestern Ontario for many years, and showings of oil and gas were reported in Niagara rocks penetrated by wells in various areas in Michigan. Cataract rocks of lower Silurian age and Niagara rocks...

... Peninsula, where it is characterized by east-southeast-striking geophysical anomalies. Central and southwestern Michigan is underlain primarily by felsic rocks correlating with the Central province. Basement rocks in southeastern Michigan strike north-northeast and are interpreted to be metamorphosed...

... completed in the Richfield zone of the Detroit River formation (Devonian). There were 6 successful outpost wells for the most part making extensions to the shallow Traverse limestone fields in southwestern Michigan with no important addition of reserves indicated. A field well, not included in exploratory...