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Pleasant Mills Formation

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Photograph of the <span class="search-highlight">Pleasant</span> <span class="search-highlight">Mills</span> <span class="search-highlight">Formation</span> at the eastern wall, northeast c...

Photograph of the Pleasant Mills Formation at the eastern wall, northeast c...

Published: 29 March 2019
Figure 10. Photograph of the Pleasant Mills Formation at the eastern wall, northeast corner of the Irving Materials quarry, Bluffton, Indiana; July 2016.
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Photographs of the Cedarville Member of the Laurel <span class="search-highlight">Formation</span> overlain by th...

Photographs of the Cedarville Member of the Laurel Formation overlain by th...

Published: 29 March 2019
Figure 8. Photographs of the Cedarville Member of the Laurel Formation overlain by the Limberlost and “Waldron” members of the Pleasant Mills Formation at the Irving Materials quarry, Huntington, Indiana; July 2016. (A and B) North-northwest quarry wall south and center of the railroad tracks
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Lithostratigraphic nomenclature utilized in eastern and northeastern Indian...

Lithostratigraphic nomenclature utilized in eastern and northeastern Indian...

Published: 23 September 2022
) to include sequence IX in the lower part of “Salina B–G.” This is based upon our subsurface analyses of the Greenfield Formation through “Salina B–G” interval, in which a significant change in overall depositional motif occurs at this contact. In turn, we assigned the Louisville Member of the Pleasant Mills
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Recrystallized, dolomitized ooids from the Limberlost Member of the Pleasan...

Recrystallized, dolomitized ooids from the Limberlost Member of the Pleasan...

Published: 29 March 2019
Figure 11. Recrystallized, dolomitized ooids from the Limberlost Member of the Pleasant Mills Formation at Bluffton, Indiana; sample was collected 2.35 m down from the Bluffton quarry datum, which is at the top of the 25 cm resistant carbonate bed within Waldron A (same datum as shown in Fig. 9
Journal Article

Identification of a global sequence boundary within the upper Homerian (Silurian) Mulde Event: High-resolution chronostratigraphic correlation of the midcontinent United States with Sweden and the United Kingdom

Erika M. Danielsen, Bradley D. Cramer, Mark A. Kleffner
Journal: Geosphere
Published: 29 March 2019
Geosphere (2019) 15 (3): 839–855.
DOI: https://doi.org/10.1130/GES01685.1
...Figure 10. Photograph of the Pleasant Mills Formation at the eastern wall, northeast corner of the Irving Materials quarry, Bluffton, Indiana; July 2016. ...
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(a) Geological map of the Mount <span class="search-highlight">Pleasant</span> <span class="search-highlight">Mills</span> syncline in the Millerstown ...

(a) Geological map of the Mount Pleasant Mills syncline in the Millerstown ...

Published: 01 April 2002
Figure 6 (a) Geological map of the Mount Pleasant Mills syncline in the Millerstown and Millersburg quadrangles in the Pennsylvania Valley and Ridge (modified from Faill and Wells [1974] and Hoskins [1976] ). The Mount Pleasant Mills thrust is located on the gently dipping north limb
Journal Article

Timing of Acadian deformation in northeastern Maine

F. A. Hubacher, D. R. Lux
Journal: Geology
Published: 01 January 1987
Geology (1987) 15 (1): 80–83.
DOI: https://doi.org/10.1130/0091-7613(1987)15<80:TOADIN>2.0.CO;2
... estimate for their time of emplacement is the average of the combined ages of the micas, hornblendes, and clinopyroxene, 402 ± 6 Ma. The plutons are undeformed and crosscut upright, open, Acadian folds in the Carys Mills, Smyrna Mills, and Madrid(?) Formations. The age of the Pleasant Lake, Hunt Ridge...
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Further detrital zircon evidence for peri-Gondwanan blocks in the central Appalachian Piedmont Province, USA

Aaron J. Martin, Howell Bosbyshell
Published: 26 March 2019
Canadian Journal of Earth Sciences (2019) 56 (10): 1061–1076.
DOI: https://doi.org/10.1139/cjes-2018-0253
... localities of the Piney Run Formation, Pleasant Grove Schist, Prettyboy Schist, and Wissahickon Formation could have been derived solely from Ediacaran Laurentia. At least some sediment in the Storck quartzite and the Hoods Mill rocks was derived from Gondwana. We confirm the presence of a previously...
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Contoured equal area plots comparing the orientation of poles to foliation ...

Contoured equal area plots comparing the orientation of poles to foliation ...

Published: 01 August 2016
Figure 2 Contoured equal area plots comparing the orientation of poles to foliation in ( a ) the West Grove Metamorphic Suite (WGMS), ( b ) the Rosemont Shear Zone (RSZ), and ( c ) the Wissahickon Formation (WF). Data in a are compiled from Blackmer (2004a , 2004b) and Wiswall (2005) ; data
Journal Article

Chronostratigraphic correlation of the Upper Silurian Salina Group for the Michigan and Appalachian Basins through coupled (δ 13 C carb ) chemostratigraphy and subsurface geophysical analyses

Stephan C. Oborny, Bradley D. Cramer, Carlton E. Brett, Alyssa M. Bancroft
Journal: Geosphere
Published: 23 September 2022
Geosphere (2022) 18 (6): 1910–1925.
DOI: https://doi.org/10.1130/GES02515.1
...) to include sequence IX in the lower part of “Salina B–G.” This is based upon our subsurface analyses of the Greenfield Formation through “Salina B–G” interval, in which a significant change in overall depositional motif occurs at this contact. In turn, we assigned the Louisville Member of the Pleasant Mills...
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Journal Article

Identification of Fluid Inclusion Solid Phases Using a Focused Ion Beam Scanning Electron Microscope with Energy Dispersive Spectroscopy: Implications For Interpreting Microthermometric Data and Composition of Fluids in Sn (-w-mo) Deposits

Golpira Elmi Assadzadeh, Iain M. Samson, Joel E. Gagnon
Published: 01 May 2016
The Canadian Mineralogist (2016) 54 (3): 737–754.
DOI: https://doi.org/10.3749/canmin.1500065
... or because of slow reaction kinetics. Given the abundance of Na- and K-bearing fluids in geological settings similar to Mount Pleasant, it is reasonable to presume that halite is present in the system, but slow kinetics likely hinder hydrohalite formation during freezing experiments. The absence of Raman...
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