Diamond drilling for geologic information in the middle Precambrian basins in the western portion of northern Michigan. Final report

Trow, James W.

doi:10.2172/5903013

Cited by 3 publications

(15 citation statements)

References 4 publications

(4 reference statements)

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“…Three holes DL-1, DL-3, and DL-7 were drilled by Bendix in the East Baraga basin, as designated in figure 3. Hole DL-1 penetrated nearly 2,100 ft (1,978 ft actual thickness according to Trow, 1979) of the upper slate member, which contains only a few graywacke beds; it did not reach Archean basement. Hole DL-3 was terminated at 1,634 ft after penetrating 1,471 ft of the upper member.…”

Section: East Baraga Basin Drill Holesmentioning

confidence: 99%

“…Bendix's drill hole DL-4 (4A and 4B) in the Dead River basin ( fig. 7) intersected 2,890 ft (2,630 ft actual thickness according to Trow, 1979) of the upper member, 40 ft of the Bijiki, and 93 ft of Goodrich Quartzite; it penetrated weathered Archean tonalite basement at 3,119 ft. I reinterpreted the upper 33 ft of the Goodrich as assigned by Trow as being 2These drill holes were logged in feet and are reported herein in feet.…”

Section: Dead River Basin Drill Holementioning

confidence: 99%

“…J & L Steel Company drilled one vertical hole, and Cleveland-Cliffs Mining Company and Minatome Corporation drilled an inclined hole in 1983. These eight holes were drilled as stratigraphic test holes2 for assessment of uranium potential (Trow, 1979). In general, the same three members of the formation that crop out in the area are present in the drill holes (1) the lower slate member, (2) the Bijiki Ironformation Member, and (3) the upper slate member.…”

Section: Drill Hole Descriptionsmentioning

confidence: 99%

“…The cores consist largely of black slate, metasiltstone, and minor metagraywacke; carbon and sulfide minerals are common. Trow (1979) has described the cores and presented some chemical data. The iron-formation in most of the drill cores consists of thin beds of white chert, brown-tinged iron carbonates, and minor iron oxides.…”

Section: Drill Hole Descriptionsmentioning

confidence: 99%

“…Argillite and siltstone are dominant in the upper member, but some graded graywacke beds (Bouma A, A-B, B, and A-B-C) as much as 10 cm thick are present. The Bijiki consists of chert and carbonate with interbedded black slate; a possible stromatolite layer 30 cm thick was logged in the original study (Trow, 1979), but this may be a tectonically deformed carbonate layer.…”

Section: Clark Creek Basin Drill Holementioning

confidence: 99%

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Sedimentology and provenance of the early Proterozoic Michigamme Formation and Goodrich Quartzite, northern Michigan: Regional stratigraphic implications and suggested correlations

Ojakangas¹

1994

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Rl Introduction Rl General field description, Michigamme Formation R4 Slate members R4 Bijiki Iron-formation Member R7 Drill hole descriptions R7 Clark Creek basin drill hole R8 Dead River basin drill hole R8 East Baraga basin drill holes R8 Amasa drill hole RIO Gwinn area drill hole RIO Petrography RIO Chemistry R13 Paleocurrent analysis R16 Metagraywacke and metasiltstone R16 Goodrich Quartzite R18 Sedimentation R19 Introduction R19 Goodrich Quartzite R21 Lower slate member, Michigamme Formation R22 Bijiki Iron-formation Member, Michigamme Formation R22 Upper slate member, Michigamme Formation R22 Tectonic model and provenance R23 Stratigraphic implications R27 References cited R28 FIGURES 1. Correlation chart for rocks in the Early Proterozoic Animikie basin R2 2. Generalized geologic-tectonic map of Precambrian rocks, Lake Superior region R3 3. Generalized geologic map of Precambrian rocks, northern Michigan and northwestern Wisconsin R5 4-6. Photographs showing: 4. Graywacke beds in roadcut south of Covington, Michigan R6 5. Graded graywacke beds with refracted cleavage, roadcut east of Covington, Michigan R6 6. Graywacke beds, measured section southeast of Crystal Falls, Michigan R6 7. Generalized logs of drill holes DL-4 and DL-5, northern Michigan R9 8. Q/F/L plots of modal analyses of Michigamme Formation graywacke and Goodrich Quartzite RIO 9-12. Photomicrographs of: 9. Graywacke, showing abundance of matrix R13 10. Graywacke, showing felsic volcanic rock fragments R13 11. Graywacke, showing fresh and altered plagioclase R14 12. Goodrich Quartzite, composed mostly of rounded quartz grains R14 Contents III IV Contents

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Section: East Baraga Basin Drill Holesmentioning

confidence: 99%

Section: Dead River Basin Drill Holementioning

confidence: 99%

Section: Drill Hole Descriptionsmentioning

confidence: 99%

Section: Drill Hole Descriptionsmentioning

confidence: 99%

Section: Clark Creek Basin Drill Holementioning

confidence: 99%

See 3 more Smart Citations

Sedimentology and provenance of the early Proterozoic Michigamme Formation and Goodrich Quartzite, northern Michigan: Regional stratigraphic implications and suggested correlations

Ojakangas¹

1994

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National Uranium Resource Evaluation: Iron River Quadrangle, Michigan and Wisconsin

Frishman¹

1982

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Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan

Bornhorst

Johnson

Sims³

et al. 1993

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The south half of the Ishpeming greenstone belt is dominated by a thick succession of subaqueously erupted volcanic rocks. A regional structural interpretation of the belt provides a framework for placing this succession in a stratigraphic order. The south half of the Ishpeming greenstone belt preserves the remnants of overlapping subaqueous volcanic complexes within an arc system.The Kitchi Formation, as redefined herein, comprises the lower half of the volcanic succession and is subdivided into three informal units. The basal basalt flow unit is composed of pillowed, tholeiitic, basalt flows and minor banded iron-formation and dacitic tuff. It is overlain by the second and third units, which are tuff and lahar (volcanic debris flow) units that interfinger with one another. These units range in composition from calc-alkalic basalt to dacite. The Kitchi Formation represents an evolving tholeiitic, mafic shield to calc-alkalic, mafic to felsic subaqueous volcano.The Mona Formation, which is redefined herein, is in structural contact with the Kitchi Formation, but is likely younger. It is subdivided into three informal units. The base consists of a basalt flow unit, which is composed of pillowed, tholeiitic to magnesium-rich basalt flows and minor amounts of banded iron-formation and tuff. The basalt is overlain by a calc-alkalic dacite to rhyolite lapilli-tuff unit and a laterally continuous upper tuff unit of calc-alkalic basalt to andesite. The Mona Formation represents an evolving tholeiitic, mafic shield to mafic-felsic calc-alkalic, mafic to felsic subaqueous volcano. The Deer Lake Peridotite, an ultramafic sill complex that intrudes the Kitchi Formation, is speculatively interpreted as a subvolcanic ultramafic komatiite base of the Mona Formation.

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Diamond drilling for geologic information in the middle Precambrian basins in the western portion of northern Michigan. Final report

Abstract: BFEC rill in^ Superintendent. Charles F. Hajek and Jack McCaslin of BFEC observed t h e drilling for extended periods. BFEC ,-geophysical .logging was originally planned by Mike ~a l l i h a n , .and ~a s ' i m~l e m e n t e d '~. ,

Cited by 3 publications

References 4 publications

Sedimentology and provenance of the early Proterozoic Michigamme Formation and Goodrich Quartzite, northern Michigan: Regional stratigraphic implications and suggested correlations

Sedimentology and provenance of the early Proterozoic Michigamme Formation and Goodrich Quartzite, northern Michigan: Regional stratigraphic implications and suggested correlations

National Uranium Resource Evaluation: Iron River Quadrangle, Michigan and Wisconsin

Geology of volcanic rocks in the south half of the Ishpeming greenstone belt, Michigan

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