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Jemison Chert

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Figure 6. Stratigraphic column of the type area of the <span class="search-highlight">Jemison</span> <span class="search-highlight">Chert</span>. Trian...
Published: 01 June 2002
Figure 6. Stratigraphic column of the type area of the Jemison Chert. Triangle pattern represents metachert
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Figure 7. Fossil localities in the <span class="search-highlight">Jemison</span> <span class="search-highlight">Chert</span> and Butting Ram Quartzite....
Published: 01 June 2002
Figure 7. Fossil localities in the Jemison Chert and Butting Ram Quartzite. KMG—Kahatchee Mountain Group, LDF—Lay Dam Formation
..., and the Jemison Chert. These units have not been mapped through this intermediate south-central region of the Talladega slate belt because of the absence by faulting of a major sandstone unit, the Cheaha Quartzite, which has been used for regional correlation. Another prominent unit, the Jemison Chert, which...
Journal Article
Journal: GSA Bulletin
Published: 01 August 1988
GSA Bulletin (1988) 100 (8): 1291–1299.
... with confirmed fossil occurrences in the Jemison Chert, have established a firm correlation with the Appalachian foreland, thus stratigraphically linking the Talladega belt with Laurentia. The lower predominantly clastic sequence, tectonically bounded at its base by the frontal Blue Ridge thrust system, grades...
Published: 01 January 1989
DOI: 10.1130/SPE228-p247
... fan–like environment. These rocks are overlain by shallow-water sequences, including the Butting Ram and Cheaha sandstones and the Jemison Chert. The Lay Dam basin is interpreted as an ensialic foreland successor basin formed in response to back-arc extension during initial stages of the Acadian...
Journal Article
Journal: Geology
Published: 01 July 1990
Geology (1990) 18 (7): 650–653.
...Stephen A. Kish Abstract The Talladega belt of Alabama and Georgia is located at the southernmost exposed part of the southern Appalachian orogen and is one of the westernmost metamorphic terranes in this part of the orogen. The presence of the Lower Devonian Jemison Chert of the Talladega Group...
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Figure 10. Comparisons of times of responses to orogeny in (A) the northern...
Published: 01 June 2002
Figure 10. Comparisons of times of responses to orogeny in (A) the northern Appalachians, (B) the Appalachian basin, and (C) the Talladega belt. T—potential range of Jemison Chert Tentaculites and brachiopods; P—potential range of Erin Slate Periastron ( Beck, 1978 )
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Figure 4. Northwest-southeast cross section parallel to the axial surface o...
Published: 01 June 2002
Figure 4. Northwest-southeast cross section parallel to the axial surface of the Kelly Mountain antiform ( Fig. 2 ). The plot was constructed by projecting the base of the Jemison Chert at A ( Fig. 2 ) and the base of the Erin Slate at C ( Fig. 2 ) into the cross section
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Figure 2. Generalized geologic map of the Talladega belt in Alabama showing...
Published: 01 June 2002
Figure 2. Generalized geologic map of the Talladega belt in Alabama showing the outcrop extent of the Jemison Chert/Erin Slate (dot pattern). HG—Hillabee Greenstone. Circled letters designate locations of stratigraphic columns in Figure 3 . Postmetamorphic thrust faults are indicated by thick
Journal Article
Journal: GSA Bulletin
Published: 01 June 2002
GSA Bulletin (2002) 114 (6): 643–655.
...Figure 6. Stratigraphic column of the type area of the Jemison Chert. Triangle pattern represents metachert ...
FIGURES | View All (10)
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Figure 8. Northwest-southeast cross sections across the frontal metamorphic...
Published: 01 March 2005
of the CTZ (X–X′); (B) Georgia Talladega belt south of the CTZ (Y–Y′); (C) Alabama Talladega belt (Z–Z′) south of the CTZ. Abbreviations: BR-C—Butting Ram-Cheaha Quartzite, CG—Chilhowee Group, EBR—Eastern Blue Ridge allochthon, GSG—Great Smoky Group, HG—Hillabee Greenstone, J-E—Jemison Chert-Erin Slate, KMG
Series: GSA Field Guide
Published: 01 January 2012
DOI: 10.1130/2012.0029(08)
EISBN: 9780813756295
... belt-eastern Blue Ridge with detailed insets of stratigraphy in proximity to the Hillabee thrust and Hollins Line fault duplex system. Figure 6. Stratigraphic column of the type area of the Jemison Chert. Triangle pattern represents metachert. (From Tull, 2002 .) Figure 8. Geologic...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1972
AAPG Bulletin (1972) 56 (1): 161–166.
... fold belts are somewhat arcuate rather than linear. Arcuate salients are present in central Pennsylvania, near the Tennessee-Virginia boundary, and in Alabama just north of the area in which the Valley and Ridge folds disappear beneath the coastal plain. The Jemison Chert in Chilton County...
FIGURES | View All (5)
Journal Article
Published: 01 September 2007
The Journal of Geology (2007) 115 (5): 541–561.
... Formation, the Early to Middle Devonian Jemison Chert, and the early Mississippian Erin Slate (Butts 1926 ; Carrington 1973 ; Tull et al. 1988 ; Gastaldo et al. 1993 ; Tull 2002 ). Although Tull ( 1982 ) originally interpreted the Jemison Chert as overlying the Erin Slate, more recently he has proposed...
FIGURES | View All (10)
Journal Article
Journal: GSA Bulletin
Published: 01 March 2005
GSA Bulletin (2005) 117 (3-4): 482–499.
... of the CTZ (X–X′); (B) Georgia Talladega belt south of the CTZ (Y–Y′); (C) Alabama Talladega belt (Z–Z′) south of the CTZ. Abbreviations: BR-C—Butting Ram-Cheaha Quartzite, CG—Chilhowee Group, EBR—Eastern Blue Ridge allochthon, GSG—Great Smoky Group, HG—Hillabee Greenstone, J-E—Jemison Chert-Erin Slate, KMG...
FIGURES | View All (9)
Journal Article
Journal: AAPG Bulletin
Published: 01 October 1957
AAPG Bulletin (1957) 41 (10): 2312–2327.
...-Ordovician sediments have been identified in the crystalline belt. Certain dark beds associated with the Talladega schists of northern Alabama contain fossils of undoubted Pennsylvanian and perhaps Mississippian age. The Jemison chert and Yellow Leaf quartz-schist, also members of the Talladega series...
Series: GSA Field Guide
Published: 01 January 2015
DOI: 10.1130/2015.0039(02)
EISBN: 9780813756394
... and Kahatchee Mountain Groups. The Talladega Group consists of three formations (Fig. 3 ) in ascending order: Lay Dam Formation, Butting Ram-Cheaha Quartzite, and Jemison Chert-Erin Slate. The nature of the contact at the base of the Talladega Group (Lay Dam Formation) has been interpreted as an angular...
FIGURES | View All (36)
Journal Article
Journal: GSA Bulletin
Published: 01 March 2007
GSA Bulletin (2007) 119 (3-4): 261–274.
... equivalent units, the Devonian–earliest Mississippian(?) Jemison Chert, Erin Slate, and Chulafinnee Schist, here termed the JEC interval ( Butts, 1926 ; Bearce, 1973 ; Tull, 2002 ). Additionally, the Hillabee Greenstone thrust maintains a nearly constant distance above the base of the JEC (Fig. 2...
FIGURES | View All (7)
Journal Article
Journal: GSA Bulletin
Published: 01 November 2016
GSA Bulletin (2016) 128 (11-12): 1660–1678.
..., and reddish marls with black shales and purplish-red chert clasts of the Marne a Fucoidi Formation, thus reflecting the exact same jumbled-up lithostratigraphy exposed in the Le Terrazze and Il Clandestino bluffs, is found at a depth of ∼11 m below sea level. In between this landslide breccia and unit 4...
Journal Article
Journal: GSA Bulletin
Published: 20 February 2020
GSA Bulletin (2020) 132 (9-10): 2105–2118.
... with a depositional age constrained by overlying fossiliferous units. Conodont molds discovered near the top of the unit are characteristic of Silurian through Mississippian conodont apparatuses ( Tull et al., 1988 ). However, the unit is stratigraphically overlain by the Butting Ram/Cheaha Quartzite and Jemison...
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