2 edition of Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan found in the catalog.
Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan
Theodore J. Bornhorst
Published
1993
by U.S. G.P.O., For sale by USGS Map Distribution in Washington, DC, Denver, CO
.
Written in English
Edition Notes
| Other titles | Ishpeming greenstone belt, Michigan., Volcanic rocks, south half Ispheming greenstone belt, Michigan. |
| Statement | by Theodore J. Bornhorst and Rodney C. Johnson. |
| Series | Contributions to Precambrian geology of Lake Superior region ;, ch. P, U.S. Geological Survey bulletin ;, 1904-P |
| Contributions | Johnson, R. C. |
| Classifications | |
|---|---|
| LC Classifications | QE75 .B9 no. 1904-P, QE461 .B9 no. 1904-P |
| The Physical Object | |
| Pagination | iii, 13 p. : |
| Number of Pages | 13 |
| ID Numbers | |
| Open Library | OL1724193M |
| LC Control Number | 92027841 |
The area of this data set includes the classic geology and mineral deposits of the Keweenaw Peninsula, renowned for the occurrence of great volumes of Middle Proterozoic flood basalts and the world's largest concentration of native copper. Native copper was mined there continuously from the 's to the 's. For the earlier part of that period the Keweenawan native copper district was the Author: W.F. Cannon, Michele E. McRae, S.W. Nicholson. -, , Sketch of the Laurentian rocks o f Michigan, The Geology of the M enominee iron region, Oconto County, Wisconsin, pt. VII, Geolo gy of Wisconsin, Volume 3, Wisconsin Geological : Peter Voice.
Coordinates. The Thirtynine Mile volcanic area, part of the larger Central Colorado volcanic field, is an extinct volcanic area located in Park and Teller counties, Colorado, northwest of Cripple Creek and southeast of South Park. The area was the site of significant volcanism in the Paleogene Period about 35 million years ago. Ashfall and lahars (mudflows) from the volcanoes created the. Rocks are all around us. They make up the backbones of hills and mountains and the foundations of plains and valleys. Beneath the soil you walk on and the deep layers of soft mud that cover the ocean basins is a basement of hard rock. Rocks are made up of different minerals, broken pieces of crystals, or broken pieces of rocks. Some rocks are.
The mid-continent rift formed about Ma (million years ago) in the Precambrian. It extends from northern Kansas to Lake Superior, where it sharply turns south to the lower peninsula of Michigan. Toward the center of the rift, the thickness of the volcanic rocks reaches 25 kilometers. LIST OF FIGURES Figure 1: Tectonic assemblages map of the Wawa subprovince 3 Figure 2: Regional geology of the Schreiber Assemblage 5 Figure 3: Geology and Stop locations, Jackfish area 13 Figure 4: Detailed flow cross-sections, Stops 2A and 2B 22 Figure 5: Jensen Cation Plot of Steel River mafic volcanic rocks 25 Figure 6: Map of Gold Range Prospect, showing vein locations 43File Size: 2MB.
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Geology of Volcanic Rocks in the South Half of the Ishpeming Greenstone Belt, Michigan By Theodore J. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt Bornhorst1 and Rodney C. Johnson1 '2 Abstract The south half of the Ishpeming greenstone belt is domi nated by a thick succession of subaqueously erupted volcanic rocks.
A regional structural interpretation of the belt provides aAuthor: Theodore J. Bornhorst, Rodney C. Johnson, Rodney C. Johnson, P. Sims, L.M.H.
Carter. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan Bulletin P By: Theodore J. Bornhorst, Rodney C. Johnson, and L.M.H. Carter. Get this from a library. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan. [Theodore J Bornhorst; R C Johnson; Geological Survey (U.S.)] -- The south half of the Ishpeming greenstone belt is domi- nated by a thick succession of subaqueously erupted volcanic rocks.
A regional structural interpretation of the belt provides a framework for. Get this from a library. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan. [Theodore J Bornhorst; R C Johnson; Geological Survey (U.S.),] -- The south half of the Ishpeming greenstone belt is domi- nated by a thick succession of subaqueously erupted volcanic rocks.
A regional structural interpretation of the belt provides a framework for. Archean Geology of the Northern Block of the Ishpeming Greenstone Belt, Marquette County, Michigan By R.C. Johnson1 and T.J. Bornhorst1 Abstract The northern block of the Ishpeming greenstone belt occupies square kilometers in north-central Marquette County, Cited by: 6.
B P / Bornhorst, T. and Johnson, R. / GEOLOGY OF VOLCANIC ROCKS IN THE SOUTH HALF OF THE ISHPEMING GREENSTONE BELT, MICHIGAN,pb, 13 pages, 7 figs., $ 5 B Q / Gregg, W. / STRUCTURAL GEOLOGY OF PARAUTOCHTHONOUS AND ALLOCHTHONOUS TERRANES OF THE PENOKEAN OROGENY IN UPPER MICHIGAN – COMPARISON WITH.
Archean geology of the northern block of the Ishpeming greenstone belt, Marquette County, Michigan Archean geology of the northern block of the Ishpeming greenstone belt, Marquette County, Michigan: Series title: Bulletin: Series number: Chapter: F: DOI: /bF: Edition.
Ishpeming Rock & Mineral Club. likes. We are a group of people who enjoy looking for, collecting, sharing, and teaching about the rocks, minerals and ores of Michigan's Upper Peninsula.5/5(1). Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan Field guide to the geology of the Keweenaw Peninsula, Michigan.
Uranium in Middle Tertiary Volcanic. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan. Author: Theodore J.
Bornhorst, Rodney C. Johnson, P. Sims (Edited By), and L.M.H. Carter Series: Bulletin PSeller Rating: % positive. Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan / by: Bornhorst, Theodore J., et al.
Published: () Carmel formation of the Zion Park region, southwestern Utah: a review / by: Cashion, W. Published: (). Geologic unit mapped in Washington: Dark-gray to black, dense aphanitic basalt flows; commonly columnar jointed, less commonly irregularly and platy jointed; some flows vesicular, grading to scoriaceous; includes minor pillow lava, palagonite beds, and interbedded soil profiles and sedimentary beds; contains diatomite beds locally.
Maximum thickness in south-central Washington may be in. geologic history of the Ishpeming Greenstone Belt was described by Morgan and DeCristoforo (). Sims () discussed the relationship of mineral deposits to Precambrian tectonics in the Lake Superior region, and Bodwell () reviewed the mineral potential of the western Upper Peninsula of Michigan.
Quartzite a nonfoliated metamorphic rock composed almost entirely of quartz. Charoitite - a purple metamorphic rock dominated by the mineral charoite. It is used as a gem. Hand Lens A power folding magnifier in a metal case.
A frequently used lab and field tool. Sliding Rocks on Racetrack Playa How they slide across a dry lake bed is a mystery. Geochemistry of mafic and ultramafic rocks in the type section of the romberg Formation, Barberton Greenstone Belt, South Africa Author(s) T.
Vennemann. SILICEOUS AND VOLCANIC ROCKS-Chert, shale, quartzite, greenstone, and minor amounts of limestone. Includes units such as Valmy Formation of north-central Nevada and some rocks mapped as Palmetto Formation in northern part of Esmeralda County and adjacent parts of Mineral and Nye Counties.
Locally includes rocks of Silurian and Devonian age. Michigan rests on sedimentary rocks that reach down into the earth's crust more than fourteen thousand feet-a depth three-and-a-half times deeper than the Grand Canyon.
Most people recognize Michigan by its mitten-shaped Lower Peninsula and the Great Lakes embracing the state/5. This book helps you to explore the over three billion years of geologic history exposed along the roadside of the Upper Peninsula.
The high peaks, rolling hills, valleys, waterfalls, and Lake Superior itself tell a long tale of deep oceans, mountain building, and volcanic activity/5(5). Geologic Evolution of the Barberton Greenstone Belt, South Africa Donald R.
Lowe, Gary R. Byerly Geological Society of America, Jan 1, - Science - pages. These upper Michigan projects typically consist of a few kilometers of river section containing polyphase fold structures and foliations and complex fault development. In some cases, when markers are available, measurements of finite strain are correlated with the structural history.
Geology of volcanic rocks in the southern half of. Sawed and polished rock slabs of typical Barberton Greenstone Belt rock types on display at the group accommodation for close-up study and photographing. Christoph Heubeck presented the geology of the central BGB along the transect of the R40, a scenic paved road across the range from Barberton to the Josefsdal/Bulembu border post.
The Kholodnikan Complex consists of two units: lower volcanic and upper volcanic-sedimentary. The distributions of major and trace elements suggest that the protoliths of the lower unit were volcanics of the komatiite-tholeiite series (komatiite-basalt association) and those of the upper unit were volcanics of the calc-alkaline series (andesite-dacite-rhyolite association).Cited by: 1.Geology Lessons.
Back to Geology Lesson Page. Interactive Content. We have added some interactive content to the classes that you love! For this class, we have created interactive quizzes. Some of the questions are "self-correcting" (meaning there is a clear right/wrong answer), and some of the questions are essay.
