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Frankfort Formation

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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1974
AAPG Bulletin (1974) 58 (9): 1891.
...G. Bloomer ABSTRACT A petrologic and paleocurrent study of the Upper Ordovician Schenectady-Frankfort Formations does not support the commonly held supposition that the sediments were derived from the Taconic region of New England-New York. The grain-size distribution, mineralogy, and paleocurrent...
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—Comparison of stratigraphic sequences north and south of plateaus implying probable subsurface changes. Key: Dk-Catskill continental facies; Dp-Portage group; Dptr-Trimmers Rock sandstone; Dh-Hamilton group; Dhm-Mahantango formation; Dm-Marcellus shale; Don-Onondaga group; Do-Oriskany group; Dhb-Helderberg group; Scay-Cayugan group; Sb-Bloomsburg continental facies; Scl-Clinton group; Ssg-Shawangunk formation; Om-Martinsburg group; Oft-Frankfort formation; Osh-Schenectady and Snake Hill beds; Ou-Utica shale; Ot-Trenton group; Oj-Jacksonburg limestone; Onk-Normanskill shale; Odk-Deepkill formation; “COK”-Kittatinny limestone.
Published: 01 December 1950
group; Dhb-Helderberg group; Scay-Cayugan group; Sb-Bloomsburg continental facies; Scl-Clinton group; Ssg-Shawangunk formation; Om-Martinsburg group; Oft-Frankfort formation; Osh-Schenectady and Snake Hill beds; Ou-Utica shale; Ot-Trenton group; Oj-Jacksonburg limestone; Onk-Normanskill shale; Odk
Journal Article
Published: 01 September 2008
South African Journal of Geology (2008) 111 (2-3): 263–280.
... different portions of the Main Karoo basin (modified after Rubidge, 1995 ; Hancox and Rubidge, 2001 ). Note Normandien Formation, its three sandstone members (Frankfort, Rooinek and Schoondraai) separated by two argillaceous intervals (the “Christina” and “Moorfield plant fossil assemblage zones...
FIGURES | View All (29)
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Chronostratigraphy of studied stratigraphic intervals; gray shading highlights studied formations. Black vertical lines on right illustrate positions of studied cyclic intervals. FN—Frankfort North; FX—Frankfort North, ∼10 m below FN; FW—Frankfort West; FWZ—Frankfort West, west side of highway; MW—Maysville West; CV—Canyon Vauréal; PE—Pointe à l’Épinette; Hirn.—Hirnantian. Narrow-spaced vertical lines represent unconformities. Absolute time scale and biostratigraphy are modified from Webby (2004) and Trotter et al. (2008). See the Data Repository (see footnote 1) for detailed site locations and stratigraphic context.
Published: 01 July 2013
Figure 1. Chronostratigraphy of studied stratigraphic intervals; gray shading highlights studied formations. Black vertical lines on right illustrate positions of studied cyclic intervals. FN—Frankfort North; FX—Frankfort North, ∼10 m below FN; FW—Frankfort West; FWZ—Frankfort West, west side
Journal Article
Journal: GSA Bulletin
Published: 01 June 1938
GSA Bulletin (1938) 49 (6): 989–996.
... in the region around Lexington and Frankfort, but north and south of this area the upper formations are progressively eliminated. In the northernmost area of outcrop the Jessamine forms thè top; in the southernmost, the mid-Benson. The Perryville is less widely developed and is overlapped by the Cynthiana over...
Journal Article
Journal: PALAIOS
Published: 01 November 2011
PALAIOS (2011) 26 (11): 730–742.
.... Beds with soft-tissue preservation at the Beecher's Trilobite Bed site in the Frankfort Shale and the Martin Quarry in the Whetstone Gulf Formation (both Ordovician, New York State) are dominated by the olenid Triarthrus. A bed-by-bed analysis of the sedimentology, taphonomy, paleoecology...
FIGURES | View All (7)
Journal Article
Journal: Geology
Published: 01 October 2009
Geology (2009) 37 (10): 907–910.
... limestone-dominated units of the Trenton Group to the black and dark gray Utica Shale and the predominantly gray shales of the Lorraine Group ( Fig. 1 ). The Lorraine Group includes the Frankfort Shale and the Whetstone Gulf Formation ( Ruedemann, 1925 ), both of which yield pyritized soft tissues...
FIGURES
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Lithostratigraphy of the Normandien Formation from the study area. Note three sandstone members (Frankfort, Rooinek and Schoondraai), separated by a green and grey-coloured argillaceous intervals, from which the fossil collections discussed here were obtained. Modified after Groenewald (1989), based on field work of the author.
Published: 01 September 2008
Figure 2. Lithostratigraphy of the Normandien Formation from the study area. Note three sandstone members (Frankfort, Rooinek and Schoondraai), separated by a green and grey-coloured argillaceous intervals, from which the fossil collections discussed here were obtained. Modified after
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Published: 01 September 2008
members (Frankfort, Rooinek and Schoondraai) separated by two argillaceous intervals (the “Christina” and “Moorfield plant fossil assemblage zones” suggested in this paper), and the overall correlation of this formation with the Dicynodon assemblage zone.
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Sites of pyritization. A) Geological and stratigraphical context (after Lehmann et al., 1995). B) Map of New York State, with a box indicating the location of an inset map (C). C) Geographical context with Ordovician geology highlighted. Light blue  =  carbonate-dominated sediments, green  =  siliciclastic-dominated sediments, a  =  Martin Quarry, Whetstone Gulf Formation, b and c  =  Beecher's Trilobite Bed site and Jo's Quarry, Frankfort Shale.
Published: 01 November 2011
, green  =  siliciclastic-dominated sediments, a  =  Martin Quarry, Whetstone Gulf Formation, b and c  =  Beecher's Trilobite Bed site and Jo's Quarry, Frankfort Shale.
Journal Article
Journal: PALAIOS
Published: 01 August 2004
PALAIOS (2004) 19 (4): 316–331.
... described lithologically at a 10-cm level of resolution to build the 110-m Frankfort composite section from the uppermost Tyrone Limestone that immediately underlies the Lexington Limestone into the lowermost Clays Ferry Formation. A faunal survey was conducted in these sections and the abundances...
FIGURES | View All (10)
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Fossils from trilobite beds. A) Ventral view of pyritized Triarthrus eatoni (YPM.516160 and 516161). B) Lateral view of pyritized Triarthrus eatoni (YPM.227952). C) Fully articulated unpyritized Triarthrus eatoni, (Bed 822, YPM.221894). D) Pyritized ostracode (Bed 906, YPM.307293). E) Ventral view of pyritized Cryptolithus bellulus (YPM.509987). A, B, and E are from the Martin Quarry, Whetstone Gulf Formation. C and D are from the Walcott Quarry, Frankfort Shale.
Published: 01 November 2011
) Ventral view of pyritized Cryptolithus bellulus (YPM.509987). A, B, and E are from the Martin Quarry, Whetstone Gulf Formation. C and D are from the Walcott Quarry, Frankfort Shale.
Journal Article
Journal: AAPG Bulletin
Published: 01 June 1962
AAPG Bulletin (1962) 46 (6): 772–777.
... County, a tight hole, stopped in the Ordovician Queenston Formation, The K. Hirsch No. 1, Franklin Township, Delaware County, was drilled to total depth of 5,327 ft. and penetrated the Ordovician Frankfort Formation. There were slight shows of gas in the Oriskany and Herkimer. The Oneida Formation...
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Journal Article
Journal: PALAIOS
Published: 01 May 2007
PALAIOS (2007) 22 (3): 245–267.
...) and McLaughlin et al. (2004) , showing facies distribution through the upper Lexington Limestone, Clays Ferry–Kope Formation, and Garrard Siltstone from central Kentucky (Frankfort–Winchester area) into southwestern Ohio (Oxford area; see Fig. 1B ). Facies gradients from calcarenite to organic-rich brown shale...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 1948
AAPG Bulletin (1948) 32 (8): 1627–1646.
... formation. The Perryville, as it was known, is absent from much of the area of mid-Ordovician outcrop in central Kentucky. It is restricted, with minor exceptions, to two areas referred to in this paper as the Danville-Harrodsburg, or southern area, and the Versailles-Frankfort area. The latter area...
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FIGURE 3—Schematic cross section, compiled from data of Algeo and Brett (2001) and McLaughlin et al. (2004), showing facies distribution through the upper Lexington Limestone, Clays Ferry–Kope Formation, and Garrard Siltstone from central Kentucky (Frankfort–Winchester area) into southwestern Ohio (Oxford area; see Fig. 1B). Facies gradients from calcarenite to organic-rich brown shale are depicted by the gray scale. The argillaceous limestone and gray shale facies contains thin siltstones and silty shale in the Kope–Clays Ferry Formation. Note that the Point Pleasant–Fulton interval extends well out into the basin as a relatively clean limestone tongue, even though shoreface deposits are confined to the upper ramp. SB-CC = sequence boundary–correlative conformity; BSFR = basal surface of forced regression. See Figure 1 for remaining abbreviations
Published: 01 May 2007
FIGURE 3 —Schematic cross section, compiled from data of Algeo and Brett (2001) and McLaughlin et al. (2004) , showing facies distribution through the upper Lexington Limestone, Clays Ferry–Kope Formation, and Garrard Siltstone from central Kentucky (Frankfort–Winchester area) into southwestern
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1938
AAPG Bulletin (1938) 22 (1): 79–99.
... formation, the Frankfort shale (1840, Vanuxem). In sections near by, where the Pulaski is capped by the Oswego sandstone and its base is determined by its fossils, it has a thickness of about 400 feet. The Pulaski has yielded small quantities of gas in Onondaga County. On account of the incomplete...
FIGURES
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Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: (a) Equisetum (b) leaf impressions of Morphotype Pnc1; (c) Venations of Morphotype Pnc1; (d) leaf impressions of Morphotype Pnc2; (e) Venation of Morphotype Pnc2; (f) Leaf impression of Morphotype Pnc3; (g) venation of Morphotype Pnc3; (h) Leaf impression of Morphotype Pnc4; (i) venation of Morphotype Pnc4; (j) Leaf impression of Morphotype Pnc5; (k) venation of Morphotype Pnc5; (l) leaf impressions of Morphotype Pnc6; (m) Venation of Morphotype Pnc6; (n) Leaf impression of Morphotype Pnc7, (o) venation of Morphotype Pnc7.
Published: 01 September 2008
Figure 4. Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: ( a ) Equisetum ( b ) leaf impressions
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Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: (a) Equisetum (b) leaf impressions of Morphotype Pnc1; (c) Venations of Morphotype Pnc1; (d) leaf impressions of Morphotype Pnc2; (e) Venation of Morphotype Pnc2; (f) Leaf impression of Morphotype Pnc3; (g) venation of Morphotype Pnc3; (h) Leaf impression of Morphotype Pnc4; (i) venation of Morphotype Pnc4; (j) Leaf impression of Morphotype Pnc5; (k) venation of Morphotype Pnc5; (l) leaf impressions of Morphotype Pnc6; (m) Venation of Morphotype Pnc6; (n) Leaf impression of Morphotype Pnc7, (o) venation of Morphotype Pnc7.
Published: 01 September 2008
Figure 4. Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: ( a ) Equisetum ( b ) leaf impressions
Image
Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: (a) Equisetum (b) leaf impressions of Morphotype Pnc1; (c) Venations of Morphotype Pnc1; (d) leaf impressions of Morphotype Pnc2; (e) Venation of Morphotype Pnc2; (f) Leaf impression of Morphotype Pnc3; (g) venation of Morphotype Pnc3; (h) Leaf impression of Morphotype Pnc4; (i) venation of Morphotype Pnc4; (j) Leaf impression of Morphotype Pnc5; (k) venation of Morphotype Pnc5; (l) leaf impressions of Morphotype Pnc6; (m) Venation of Morphotype Pnc6; (n) Leaf impression of Morphotype Pnc7, (o) venation of Morphotype Pnc7.
Published: 01 September 2008
Figure 4. Photographs of plant fossils (proposed “Christina assemblage zone”), obtained from the farm Christina (90) unless otherwise noted, in the argillaceous succession between the Frankfort and Rooinek Members, Normandien Formation, Beaufort Group: ( a ) Equisetum ( b ) leaf impressions