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182:. This interval was first described in 1892, but remained unnamed until 1909 as part of a study on the Ouachita Mountains of Arkansas by Albert Homer Purdue.
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295:"Structure and stratigraphy of the Ouachita Ordovician area (abstract)"
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Annual Report of the
Geological Survey of Arkansas for 1890
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Griswold, I.S. (1892). "Whetstones and the novaculites".
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List of fossiliferous stratigraphic units in
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Arkansas
Geological Commission Information Circular
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279:. Geological Survey of Arkansas. pp. 30, 32.
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234:"Stratigraphic summary of Arkansas"
369:. You can help Knowledge (XXG) by
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232:McFarland, John David (2004) .
416:Ordovician geology of Oklahoma
358:This article about a specific
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365:in the United States is a
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161:Crystal Mountain Sandstone
19:Crystal Mountain Sandstone
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213:Paleontology in Arkansas
293:Purdue, A.H. (1909).
275:Purdue, A.H. (1909).
247:: 18. Archived from
421:Ordovician Arkansas
314:10.1130/GSAB-19-513
200:Paleontology portal
153:Albert Homer Purdue
141:Crystal Mountains,
25:Stratigraphic range
277:Slates of Arkansas
172:Ouachita Mountains
168:geologic formation
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256:. Retrieved
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133:Type section
65:Mazarn Shale
410:Categories
258:2018-01-05
219:References
165:Ordovician
145:, Arkansas
29:Ordovician
363:formation
138:Named for
98:Sandstone
89:Lithology
81:Thickness
61:Underlies
53:Sub-units
39:Formation
186:See also
180:Oklahoma
176:Arkansas
150:Named by
117:Oklahoma
113:Arkansas
104:Location
71:Overlies
308:: 557.
170:in the
123:Country
94:Primary
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163:is an
109:Region
298:(PDF)
252:(PDF)
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367:stub
178:and
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261:.
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