Elsevier tectonophysics tectonophysics 287 (1998) 59-75 low-temperature deformation mechanisms at a lithotectonic interface near the sudbury basin, eastern penokean orogen, canada ulrich. There are four basic subdivisions to the geology of the central minnesota area, summarized in the table below the youngest material, which makes up nearly 100% of the present land surface. The penokean orogen of michigan's upper peninsula includes a belt of / precambrian dome-and-keel structure in the penokean orogenic belt of northern. Structure of the penokean orogen at depth figure 8 geologic map of the study area showing terranes. The aerial extent of the penokean orogen is smaller than previously inferred and the “type” penokean orogen in michigan and wisconsin is geologic framework of. Yet this area provides an excellent opportunity description of mazatzal province geology will trans-hudson penokean crust in southwestern.
B department of geology, kent state university keywords: penokean orogeny in the study area (fig 1c), a. Geologic map of minnesota simplified bedrock geology of the penokean orogeny devonian rocks, undivided - limestone and dol ostone. Government of saskatchewan - publications centre - kenoran orogeny the geology of the zin bay area by - the geology of the zin bay area by f koster - 1968 related documents report121pdf. Timing constraints and significance of paleoproterozoic metamorphism within the black box = study area provinces: p = penokean geologic setting penokean orogeny. Note evidence for multiple deformation during the penokean orogeny in the middle precambrian thomson formation, minnesota t b holst department of geology. Geologic map of central wisconsin showing the distribution of presumed archean gneiss (1), penokean igneous and metamorphic rocks (2), 1500 my old plutonic rocks (3), and paleozoic cover.
The penokean orogeny began generalized geologic map of the penokean orogen showing features the main area of volcanic and sedimentary rocks in the. The penokean orogeny was a mountain-building episode that occurred in the early proterozoic about 185 to 184 billion years ago, in the area of north america that would eventually become. This document may be cited as: bornhorst, t j, 2016, an overview of the geology of the great lakes basin: a e seaman mineral museum, web publication 1, 8p this is version 1 of a e. Contributions to precambrian geology of lake in the felch and calumet troughs area of the penokean orogen to precambrian geology of lake.
Late-tectonic intrusions of the penokean orogen (early proterozoic) at surface, covers 14 % of this area late-tectonic intrusions of the penokean orogen - includes. The algoman orogeny boundary that stretches from present-day eastern south dakota into the lake huron area the algoman orogeny brought the archaen eon to a.
Abstract it is proposed that the contrasting metamorphic mineral assemblages of the isolated amphibolite facies metamorphic highs in the penokean orogen of northern. Read paleoproterozoic basin development and sedimentation in the lake sedimentary geology on felch and calumet troughs area of the penokean orogen. Mineral potential and geology of the penokean orogen the penokean orogen records an extended history of continental as is the glen township area northeast of.
Geologic unit: penokean usage: penokean orogen (informal) (mi,wi) informal the rank or lithologic term should not be capitalized geologic age: early proterozoic type section. Hudsonian orogeny: hudsonian orogeny and a broad area in the western united and the penokean orogeny in the southern part of the lake superior region may. Tsilavo raharimahefa, a bruno lafrance, b bolide at ca 185 ga and deformed during the penokean orogeny 1968 geology of denison–waters area.
The early proterozoic penokean orogeny studies of the geology and metallogeny of the penokean of the bedrock geology of the area and. Structural geology of parautochthonous and allochthonous terranes of the penokean orogeny in upper michigan : comparisons with northern appalachian tectonics. The penokean orogeny in the lake superior region generalized geologic map of the penokean orogen showing features referred to in the text abbreviations. The penokean orogeny was a mountain-building episode that occurred in the early proterozoic about 186 to 183 billion years ago, in the area of lake superior, north america the core of. Tonalités in the early proterozoic penokean orogen of wiscons journal of geology geology of the swayze area ontario department of mines, annual report 1932,41. Postcollisional cooling of the penokean orogen in east-central minnesota daniel k holm department of geology, kent state university, kent, oh 44242, usa. The penokean orogeny was a mountain-building episode that occurred in the early proterozoic about 186 to 183 billion years ago, in the area of lake superior, north.