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Marenisco

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Journal Article
Published: 01 January 2010
The Journal of Geology (2010) 118 (1): 45–58.
... Bayfield County, Wisconsin. The Atkins Lake–Marenisco fault is a crustal-scale structure that juxtaposes Archean granitic gneisses with Paleoproterozoic and Neoproterozoic metasedimentary and metavolcanic rocks. Pseudotachylytes, cataclasites, and microbreccias in the fault zone record large ( M ~ 7...
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Pseudotachylyte textures in the Atkins Lake–<span class="search-highlight">Marenisco</span> fault zone. Photomicr...
Published: 01 January 2010
Figure 4. Pseudotachylyte textures in the Atkins Lake–Marenisco fault zone. Photomicrographs in B and C taken under cross-polarized light, D under plane-polarized light. Scale bar in each photomicrograph is 0.5 mm. A , Hand specimen of pseudotachylyte in Puritan quartz monzonite showing
Image
Crosscutting relationships among fault rocks from the Atkins Lake–<span class="search-highlight">Marenisco</span>...
Published: 01 January 2010
Figure 5. Crosscutting relationships among fault rocks from the Atkins Lake–Marenisco fault zone. A , Two generations of pseudotachylyte—clast rich ( Pst1 ) and clast poor ( Pst2 )—cut by and included as fragments in microbreccia. Clast-poor pseudotachylyte shows flow texture. Plane-polarized
Journal Article
Journal: GSA Bulletin
Published: 01 December 1985
GSA Bulletin (1985) 96 (12): 1585–1593.
..., over a landscape containing ice masses from earlier phases, during the Winegar-early Athelstane phase. This phase is believed to have occurred just prior to growth of the Two Creeks Forest in eastern Wisconsin. The ice then wasted back and advanced three more times during the Marenisco-late Athelstane...
... The Marenisco-Watersmeet area in the western part of the northern peninsula of Michigan contains a greenstone and granite terrane (Puritan Quartz Monzonite) of late Archean age on the north and a gneiss terrane (gneiss at Watersmeet) on the south. A granite and gneiss belt (collectively called...
Journal Article
Journal: Geology
Published: 11 February 2022
Geology (2022) 50 (5): 547–551.
... Formation, and extends ~250 km from the tip of the Keweenaw Peninsula in Michigan southeastward to a termination in northeastern Wisconsin ( Fig. 1 ; Cannon et al., 1996 ; Cannon and Nicholson, 2001 ; DeGraff and Carter, 2022 ). Thrust faults parallel to the Keweenaw fault include the Marenisco...
FIGURES
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Geologic context of the study area.  A , Map of the Great Lakes region show...
Published: 01 January 2010
and geophysical inferences to the south). Study area is marked by a star. Rift-closing faults include the Atkins Lake–Marenisco fault zone ( ALMFZ ), Keweenaw fault zone ( KFZ ), Douglas fault zone ( DFZ ), and Isle Royale fault zone ( IRFZ ). Also shown is the Kapuskasing structural zone, an area where deep
Image
Geologic context of the study area.  A , Map of the Great Lakes region show...
Published: 01 January 2010
and geophysical inferences to the south). Study area is marked by a star. Rift-closing faults include the Atkins Lake–Marenisco fault zone ( ALMFZ ), Keweenaw fault zone ( KFZ ), Douglas fault zone ( DFZ ), and Isle Royale fault zone ( IRFZ ). Also shown is the Kapuskasing structural zone, an area where deep
Image
Rocks representing progressive stages of cataclasis in the Atkins Lake–Mare...
Published: 01 January 2010
Figure 3. Rocks representing progressive stages of cataclasis in the Atkins Lake–Marenisco fault zone. Photomicrographs in A – C taken under cross-polarized light; scale bars in A – C = 1 mm. A , Quasi-plastic deformation in feldspars: kinked and bent twins in plagioclase
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(A) Geologic cross section of the Midcontinent Rift (MCR) based on a line d...
Published: 01 October 2015
. Abbreviations are DF—Douglas fault; OF—Ojibwa fault; IRF—Isle Royale fault; KF—Keweenaw fault; MF—Marenisco fault. Right inset is close-up of migrated line C ( Milkereit et al., 1990 ). Postrift volcanics (green) dip and thicken southward. (B) to (D) Stepwise restoration of section shown in (A). (B) Reverse
Journal Article
Journal: Geosphere
Published: 20 July 2023
Geosphere (2023) 19 (5): 1291–1299.
... ). This structural inversion led to major reverse faults that have been mapped from integrated field and subsurface geophysical studies (e.g., Cannon and Nicholson, 2001 ). In particular, the NW-dipping Marenisco and Keweenaw reverse faults (10–30 km west of L’Anse Bay, respectively) accommodated significant...
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Published: 30 January 2018
DOI: 10.1130/2017.2530(05)
EISBN: 9780813795300
... Figure 2 for the location of LiDAR hillshade images. ADVANCE OF THE ONTONAGON LOBE AND FORMATION OF THE WINEGAR AND MARENISCO MORAINES Following the recession of the Wisconsin Valley and Langlade Lobes, the southern flank of the Superior Lobe receded into the Superior Basin before advancing...
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Journal Article
Journal: Geology
Published: 01 December 2015
Geology (2015) 43 (12): 1083–1086.
... stability documented by ancient (U-Th)/He dates : Geology , v. 34 , p. 925 – 928 , doi:10.1130/G22670A.1. Fritts C. , 1969 , Bedrock geologic map of the Marenisco-Watersmeet area, Gogebic and Ontonagon Counties, Michigan : U.S. Geological Survey Miscellaneous Geologic Investigations Map I...
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Journal Article
Journal: Geosphere
Published: 01 October 2015
Geosphere (2015) 11 (5): 1607–1616.
.... Abbreviations are DF—Douglas fault; OF—Ojibwa fault; IRF—Isle Royale fault; KF—Keweenaw fault; MF—Marenisco fault. Right inset is close-up of migrated line C ( Milkereit et al., 1990 ). Postrift volcanics (green) dip and thicken southward. (B) to (D) Stepwise restoration of section shown in (A). (B) Reverse...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1989
AAPG Bulletin (1989) 73 (3): 261–275.
... : GSA Bulletin , v. 82 , p. 2187 – 2208 . Klasner , J. S. , and P. K. Sims , 1984 , Geologic interpretation of gravity data, Marenisco-Watersmeet area, northern Michigan : USGS Professional Paper 1292-B , 13 p. Klasner , J. S. , E. R. King , and W. J. Jones...
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Journal Article
Published: 30 April 2003
Canadian Journal of Earth Sciences (2002) 39 (6): 999–1012.
... flood basalt—arachnids rule OK? In Continental basalts and mantle xenoliths . Edited by Hawkesworth C.J. Norry M.J. . Shiva Publications , Nantwich, U.K. , pp.  158 – 185 . Trent V.A. 1973 . Geologic map of the Marenisco and Wakefield NE quadrangles, Gogebic County...
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Journal Article
Journal: GSA Bulletin
Published: 22 August 2023
GSA Bulletin (2024) 136 (3-4): 1628–1650.
... and exhumed rocks along the Marenisco Fault ( Cannon et al., 1993 ; Hodgin et al., 2022 ). The Nonesuch Formation was never deeply buried ( Gallagher et al., 2017 ), and the overlying Freda Formation forms the structurally highest portion of the monocline ( Fig. 1 ). As a result of monocline formation...
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Journal Article
Published: 01 July 2020
The Journal of Geology (2020) 128 (4): 337–370.
... . Geology, geochemistry, and age of Archean and Early Proterozoic rocks in the Marenisco-Watersmeet area, northern Michigan . U.S. Geol. Surv. Prof. Pap. 1292-A , 41 p. Sircombe , K. N. 1999 . Tracing provenance through the isotope ages of littoral and sedimentary detrial zircon, eastern...
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Series: GSA Field Guide
Published: 01 January 2011
DOI: 10.1130/2011.0024(15)
EISBN: 9780813756240
... flowed along an oversized valley bench between Hovland and Grand Marais (Figs. 8 and 9 ). The pre-Agassiz (Lake Norwood II) discharge of sediments (along Marenisco phase, Superior lobe ice) would initially fill in the Devil Track Gorge, a preglacial, bedrock valley (one of many along the North...
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