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Yarmouth Island Formation

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Representative features of the Yarmouth Island Formation. (a) Outcrop photograph of light-colored inclusions in garnet amphibolite. These inclusions are interpreted to represent relict clasts of felsic to intermediate rock within metamorphosed basalt. (b) Hand sample photo of grunerite–plagioclase-rich rock interpreted to represent metamorphosed basaltic andesite. (c) Outcrop photo of plagioclase–biotite–garnet–quartz–hornblende rock interpreted to represent metamorphosed dacite. (d) Outcrop photo showing large darker colored grains of quartz and feldspar that are interpreted to represent relict phenocrysts in metamorphosed rhyolite. (e) Plane light photomicrograph from sample Y.I.-28 showing the typical mineral assemblage in metabasalts: garnet (labeled), hornblende (dark colored), and plagioclase feldspar (light colored). (f) Crossed polarized light photomicrograph from sample Y.I.-42, one of the dated samples, showing what is interpreted to be a relict plagioclase phenocryst (large grain in the center) in metamorphosed rhyolite.

Representative features of the Yarmouth Island Formation. ( a ) Outcrop pho...

Published: 01 December 2023
Fig. 5. Representative features of the Yarmouth Island Formation. ( a ) Outcrop photograph of light-colored inclusions in garnet amphibolite. These inclusions are interpreted to represent relict clasts of felsic to intermediate rock within metamorphosed basalt. ( b ) Hand sample photo
Image
U–Pb results from zircons analyzed from Yarmouth Island Formation metamorphosed felsic volcanic rocks. (A) Concordia diagram covering the range of ages for concordant zircon analyses from sample Y.I.-42. (B) Concordia diagram covering the range of ages for concordant zircon analyses from sample Y.I.-15. (C) 207Pb-corrected 238U/206Pb ages from the zircons from sample Y.I.-42. (D) 207Pb-corrected 238U/206Pb ages from the zircons from sample Y.I.-15.

U–Pb results from zircons analyzed from Yarmouth Island Formation metamorph...

Published: 01 December 2023
Fig. 7. U–Pb results from zircons analyzed from Yarmouth Island Formation metamorphosed felsic volcanic rocks. (A) Concordia diagram covering the range of ages for concordant zircon analyses from sample Y.I.-42. (B) Concordia diagram covering the range of ages for concordant zircon analyses from
Journal Article

Geochronology, geochemistry, and tectonic setting of Ordovician metavolcanic rocks in the Liberty–Orrington belt, Maine: implications for the evolution of peri-Gondwanan arcs in the northern Appalachians

Sophia A. Johnson, David P. West, Jr., Emily M. Peterman
Published: 01 December 2023
Canadian Journal of Earth Sciences (2024) 61 (2): 205–222.
DOI: https://doi.org/10.1139/cjes-2023-0115
...Fig. 5. Representative features of the Yarmouth Island Formation. ( a ) Outcrop photograph of light-colored inclusions in garnet amphibolite. These inclusions are interpreted to represent relict clasts of felsic to intermediate rock within metamorphosed basalt. ( b ) Hand sample photo...
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View PDF for article title, Geochronology, geochemistry, and tectonic setting of Ordovician metavolcanic rocks in the Liberty–Orrington belt, Maine: implications for the evolution of peri-Gondwanan arcs in the northern Appalachians
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Representative cathodoluminescence images of selected zircons analyzed from the Yarmouth Island Formation. Uncertainties on individual analyses are reported at 2σ. Additional cathodoluminescence images of zircons analyzed are provided in Figs. S1, S2, and S3.

Representative cathodoluminescence images of selected zircons analyzed from...

Published: 01 December 2023
Fig. 6. Representative cathodoluminescence images of selected zircons analyzed from the Yarmouth Island Formation. Uncertainties on individual analyses are reported at 2 σ . Additional cathodoluminescence images of zircons analyzed are provided in Figs. S1, S2, and S3.
Image
Volcanic rock geochemical classification diagrams showing the compositional range of samples collected from the Yarmouth Island Formation. (a) Classification based on alkali–silica compositions (fields from Le Bas et al. 1992). (b) Classification based on immobile trace elements (fields from Pearce 1996).

Volcanic rock geochemical classification diagrams showing the compositional...

Published: 01 December 2023
Fig. 9. Volcanic rock geochemical classification diagrams showing the compositional range of samples collected from the Yarmouth Island Formation. ( a ) Classification based on alkali–silica compositions (fields from Le Bas et al. 1992 ). ( b ) Classification based on immobile trace elements
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(a) Chondrite-normalized rare earth element (REE) data for samples from the Yarmouth Island and Spring Point formations. (b) Primitive mantle-normalized extended element diagram for samples from the Yarmouth Island and Spring Point formations. In both diagrams the Spring Point data are from West et al. (2004) and the normalizing values are from Sun and McDonough (1989).

( a ) Chondrite-normalized rare earth element (REE) data for samples from t...

Published: 01 December 2023
Fig. 10. ( a ) Chondrite-normalized rare earth element (REE) data for samples from the Yarmouth Island and Spring Point formations. ( b ) Primitive mantle-normalized extended element diagram for samples from the Yarmouth Island and Spring Point formations. In both diagrams the Spring Point data
Journal Article

SEQUENCE OF ALLUVIATION ALONG THE LOUP RIVERS, VALLEY COUNTY AREA, NEBRASKA

ROBERT D MILLER, GLENN R SCOTT
Journal: GSA Bulletin
Published: 01 November 1955
GSA Bulletin (1955) 66 (11): 1431–1448.
DOI: https://doi.org/10.1130/0016-7606(1955)66[1431:SOAATL]2.0.CO;2
.... No deposits of Illinoian age were found and in at least one place the Brady (?) soil is superposed on a gleyed horizon developed on the Sappa formation, which overlies the Grand Island formation. Post-Yarmouth erosion removed the Sappa formation and part of the Grand Island formation at most places...
View PDF for article title, SEQUENCE OF ALLUVIATION ALONG THE LOUP RIVERS, VALLEY COUNTY AREA, NEBRASKA
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Journal Article

Review of Quaternary Surface Formations of Gulf Coast Region

John A. Doering
Journal: AAPG Bulletin
Published: 01 August 1956
AAPG Bulletin (1956) 40 (8): 1816–1862.
DOI: https://doi.org/10.1306/5CEAE532-16BB-11D7-8645000102C1865D
..., the Sicily Island, is recognized in the Recent of the Mississippi River Valley. The current use of the names of the Pleistocene terraces of Red River Valley, Louisiana, for formations outside of that terrace area is shown to be incorrect because of miscorrelation with the coastal section. The correct...
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View PDF for article title, Review of Quaternary Surface <span class="search-highlight">Formations</span> of Gulf Coast Region
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Journal Article

The evolutionary significance of a Lower Cambrian trace-fossil assemblage from the Meguma terrane, Nova Scotia

Murray K. Gingras, John W.F. Waldron, Chris E. White, Sandra M. Barr
Published: 10 December 2010
Canadian Journal of Earth Sciences (2011) 48 (1): 71–85.
DOI: https://doi.org/10.1139/E10-086
...Murray K. Gingras; John W.F. Waldron; Chris E. White; Sandra M. Barr Abstract We report a diverse assemblage of trace fossils from the Lower(?) Cambrian High Head member of the Church Point Formation near Yarmouth, Nova Scotia. Based on the presence of sharp-based beds, load casts, and flute casts...
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View PDF for article title, The evolutionary significance of a Lower Cambrian trace-fossil assemblage from the Meguma terrane, Nova Scotia
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Journal Article

Pleistocene Stratigraphy and Eustatic History Based on Cores at Waimanalo, Oahu, Hawaii

DANIEL LUM, HAROLD T STEARNS
Journal: GSA Bulletin
Published: 01 January 1970
GSA Bulletin (1970) 81 (1): 1–16.
DOI: https://doi.org/10.1130/0016-7606(1970)81[1:PSAEHB]2.0.CO;2
.... The transgressive and regressive stratigraphy corresponds to major eustatic changes in sea level and provides convenient lithologic grouping of four formations: the Kahuku Point (Transgression I, Aftonian?, and Regression II, Kansan?), Kaena (Transgression II, Yarmouth), Bellows Field (Regression III, Illinoian...
View PDF for article title, Pleistocene Stratigraphy and Eustatic History Based on Cores at Waimanalo, Oahu, Hawaii
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Journal Article

ANALYSIS OF PLEISTOCENE CORE FROM GREAT SALT LAKE, UTAH

A. J Eardley, Vasyl Gvosdetsky
Journal: GSA Bulletin
Published: 01 September 1960
GSA Bulletin (1960) 71 (9): 1323–1344.
DOI: https://doi.org/10.1130/0016-7606(1960)71[1323:AOPCFG]2.0.CO;2
... and other data the following conclusions were reached. (1) The core probably penetrated sediments deposited during the Wisconsin, Sangamon, Illinoian, Yarmouth, Kansan, and part of the Aftonian ages of the Pleistocene. The several times of soil formation represent hiatuses in the sedimentary record...
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Journal Article

Petrology, age, and tectonic setting of the White Rock Formation, Meguma terrane, Nova Scotia: evidence for Silurian continental rifting

Lisa A. MacDonald, Sandra M. Barr, Chris E. White, John W.F. Ketchum
Published: 22 February 2002
Canadian Journal of Earth Sciences (2002) 39 (2): 259–277.
DOI: https://doi.org/10.1139/e01-074
...Lisa A. MacDonald; Sandra M. Barr; Chris E. White; John W.F. Ketchum Abstract The White Rock Formation in the Yarmouth area of the Meguma terrane of southern Nova Scotia consists mainly of mafic tuffaceous rocks with less abundant mafic flows, epiclastic and clastic sedimentary rocks, and minor...
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View PDF for article title, Petrology, age, and tectonic setting of the White Rock <span class="search-highlight">Formation</span>, Meguma terrane, Nova Scotia: evidence for Silurian continental rifting
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Journal Article

Geology of Georges Bank Basin

L. K. Schultz, R. L. Grover
Journal: AAPG Bulletin
Published: 01 June 1974
AAPG Bulletin (1974) 58 (6): 1159–1168.
DOI: https://doi.org/10.1306/83D91637-16C7-11D7-8645000102C1865D
... of the basin. There appears to be little regional variation along strike in the thickness of the Lower Cretaceous to Tertiary formations. Jurassic sedimentary rocks are believed to fill the basin deep, between the Yarmouth arch and the platform area on the west. The Georges Bank basin is a large...
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Journal Article

U–Pb (zircon) ages and provenance of the White Rock Formation of the Rockville Notch Group, Meguma terrane, Nova Scotia, Canada: evidence for the “Sardian gap” and West African origin

Chris E. White, Sandra M. Barr, Ulf Linnemann
Published: 09 April 2018
Canadian Journal of Earth Sciences (2018) 55 (6): 589–603.
DOI: https://doi.org/10.1139/cjes-2017-0196
... Formation ( Faribault 1909 , 1921 ; Crosby 1962 ; Smitheringale 1960 , 1973 ; Taylor 1965 , 1969 ). Volcanic rocks are also a prominent component of the White Rock Formation in the Torbrook, Cape St. Marys, and Yarmouth areas, but not in the other two areas. In the Bear River, Torbrook, and Wolfville...
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View PDF for article title, U–Pb (zircon) ages and provenance of the White Rock <span class="search-highlight">Formation</span> of the Rockville Notch Group, Meguma terrane, Nova Scotia, Canada: evidence for the “Sardian gap” and West African origin
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Journal Article

Geology of New England Passive Margin

James A. Austin, Jr., Elazar Uchupi, D. R. Shaughnessy, III, R. D. Ballard
Journal: AAPG Bulletin
Published: 01 April 1980
AAPG Bulletin (1980) 64 (4): 501–526.
DOI: https://doi.org/10.1306/2F918A6D-16CE-11D7-8645000102C1865D
... Island. G.B.: Georges Bank. G.B.B.: Georges Bank basin. S.B.: Scotian basin. NE.C.: Northeast Channel. G.S.C.: Great South Channel. On this and following maps, light-dashed contours show bathymetry. The field investigation (R/V Atlantis II cruise 91) was carried out in an area...
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Journal Article

Cambrian–Ordovician acritarchs in the Meguma terrane, Nova Scotia, Canada: Resolution of early Paleozoic stratigraphy and implications for paleogeography

C.E. White, T. Palacios, S. Jensen, S.M. Barr
Journal: GSA Bulletin
Published: 01 November 2012
GSA Bulletin (2012) 124 (11-12): 1773–1792.
DOI: https://doi.org/10.1130/B30638.1
... metasandstone, locally interlayered with green, cleaved metasiltstone, and rare black slate. The stratigraphically lowest and highest metasandstone beds in the formation in the Yarmouth area yielded concordant detrital zircon ages of 544 ± 18 Ma and 529 ± 19 Ma, respectively, limiting the maximum depositional...
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View PDF for article title, Cambrian–Ordovician acritarchs in the Meguma terrane, Nova Scotia, Canada: Resolution of early Paleozoic stratigraphy and implications for paleogeography
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Journal Article

OIL AND GAS DEVELOPMENTS IN EASTERN CANADA IN 1983

R.A. Trevail, Debra K. Parker
Published: 01 December 1984
Bulletin of Canadian Petroleum Geology (1984) 32 (4): 417–433.
DOI: https://doi.org/10.35767/gscpgbull.32.4.417
... deux découvertes dans la formation Trenton ordovicienne: la production initialle du puit de découverte Rowe-Ram #1 Dover East 7-5-V fut rapportée à 49 m 3 /jour (308 barrils/jour). Le puit OGS 82-3 Yarmouth (Elgin County) confirma la présence de pétrole dans des roches sédimentaires d’âge cambrien dans...
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Journal Article

Jurassic deep-water reservoirs at a transfer-transform offset: Modeling the mixed carbonate-siliciclastic Shelburne subbasin, southeastern Canadian margin

Justin Nagle, David J. W. Piper, E. Marfisi, Georgia Pe-Piper, F. Saint-Ange
Journal: AAPG Bulletin
Published: 01 January 2024
AAPG Bulletin (2024) 108 (1): 41–73.
DOI: https://doi.org/10.1306/01172320041
...Justin Nagle; David J. W. Piper; E. Marfisi; Georgia Pe-Piper; F. Saint-Ange ABSTRACT The Mesozoic–Cenozoic Scotian Basin terminates southwestward at the Yarmouth transfer fault zone. That part of the basin, the western Shelburne subbasin, shows a different geological evolution from the main...
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View PDF for article title, Jurassic deep-water reservoirs at a transfer-transform offset: Modeling the mixed carbonate-siliciclastic Shelburne subbasin, southeastern Canadian margin
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Journal Article

Meguma terrane orocline: U–Pb age and paleomagnetism of the Silurian Mavillette gabbro, Nova Scotia, Canada

Halima S. Warsame, Phil J.A. McCausland, Chris E. White, Sandra M. Barr, Gregory R. Dunning, John W.F. Waldron
Published: 15 September 2020
Canadian Journal of Earth Sciences (2021) 58 (4): 315–331.
DOI: https://doi.org/10.1139/cjes-2020-0089
... geochronology of the Yarmouth area, southwest Nova Scotia . Unpublished M.Sc. thesis, Dalhousie University, Halifax, Nova Scotia Canada , 257 pp. Moran , P.C. , Barr , S.M. , White , C.E. , and Hamilton , M.A. 2007 . Petrology, age, and tectonic setting of the Seal Island pluton...
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View PDF for article title, Meguma terrane orocline: U–Pb age and paleomagnetism of the Silurian Mavillette gabbro, Nova Scotia, Canada
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Journal Article

Triassic Rift Structure in Gulf of Maine

R. D. Ballard, Elazar Uchupi
Journal: AAPG Bulletin
Published: 01 July 1975
AAPG Bulletin (1975) 59 (7): 1041–1072.
DOI: https://doi.org/10.1306/83D91F29-16C7-11D7-8645000102C1865D
..., Massachusetts, across central part of Gulf of Maine to Yarmouth, Nova Scotia. Sources of data are Figures 3 and 5 . 2 Woods Hole Oceanographic Institution. We are indebted to R. L. McMaster, O. D. Hermes, J. Pender, and J. A. Cain of the University of Rhode Island, J. De Boer of Wesleyan...
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