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DeGrey Member

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—Location of type section of <b>DeGrey</b> <b>member</b> of Pierre shale.
Published: 01 December 1950
Fig. 2. —Location of type section of DeGrey member of Pierre shale.
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(04)
... A study of the Pierre Shale was undertaken, focusing on two measured sections along the eastern side of the Missouri River near Fort Thompson, South Dakota. The members of the Pierre Shale represented within these sections are, successively, the Gregory, Crow Creek, DeGrey...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(06)
... The Missouri River and its tributaries in central South Dakota have eroded into the Pierre Shale, exposing a vertical sequence of late Campanian strata, from older to younger: the Crow Creek Member of the DeGrey Formation, upper DeGrey Formation, and Verendrye Formation...
Journal Article
Journal: AAPG Bulletin
Published: 01 December 1950
AAPG Bulletin (1950) 34 (12): 2337–2346.
...Fig. 2. —Location of type section of DeGrey member of Pierre shale. ...
FIGURES
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(02)
...—the Agency, Oacoma, and Verendrye shales—only the latter remains unchanged as the Verendrye Member. In 1942, Gries indicated that the Agency and Oacoma shales were not superposed units; therefore, Crandell (1950) redefined the Agency-Oacoma interval as the DeGrey Member. As a result, as recognized...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(05)
..., with representative Baculites biozones, is shown in Figure 4 . Figure 4. Stratigraphy of the Upper Cretaceous (Campanian) Pierre Shale Group in central South Dakota. *—represents 40 Ar/ 39 Ar dating of the DeGrey and Ardmore members (O'Bradovich, 1993). The Gregory Formation is ∼23 m thick in the Fort...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(11)
... the second author to conclude that its origin was the upper concretionary portion of the DeGrey Formation, which will be renamed as a separate member in a later contribution. The associated bivalves and their preservation suggested a similar source. Finally, 15 yr of stratigraphically controlled collecting...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1952
AAPG Bulletin (1952) 36 (9): 1754–1765.
... of Petroleum Geologists. All rights reserved 1952 American Association of Petroleum Geologists The Late Cretaceous Pierre shale of central South Dakota is subdivided into eight members (Crandell, 1950), which are, from top to bottom: Elk Butte, Mobridge, Virgin Creek, Verendrye, DeGrey, Crow Creek...
FIGURES | View All (7)
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(08)
... ( Gries, 1996 ). Bentonite is more abundant and the marlstone less so than in eastern South Dakota. The Crow Creek Member of the DeGrey Formation is a thin unit, averaging 3 m in thickness near the Missouri River ( Gries, 1996 ). This formation is composed of calcareous shale, sandstone, and marlstone...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(13)
... series. One humerus and ulna exhibit pathologies. The partial skeleton was found at the top of the DeGrey Formation (upper Campanian) of the Pierre Shale Group and is therefore the youngest skeleton from North America. The specimen exhibits apomorphies that correspond with the late occurrence...
Image
—Crow Creek <b>member</b> as exposed south of Missouri River opposite Rousseau loc...
Published: 01 September 1952
FIG.2. —Crow Creek member as exposed south of Missouri River opposite Rousseau locality ( Fig. 1 ). Man is standing on Gregory member; DeGrey member is above conspicuous color change.
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1959
AAPG Bulletin (1959) 43 (1): 101–123.
... of the DeGrey member of the Pierre shale of central South Dakota, the lower part of the Bearpaw shale of central Montana, the shale unit separating the Parkman and Teapot sandstone members of the Mesaverde formation of central Wyoming, and the lower part of the Pierre shale that overlies the Hygiene sandstone...
FIGURES
Journal Article
Published: 01 January 2011
Rocky Mountain Geology (2011) 46 (2): 137–164.
..., stratigraphically below Sample 11, SE¼, sec. 17, T. 3 N., R. 80 W., Grand County, Colorado. Slide 54836. Location — USGS Mesozoic loc. D13713: DeGrey Member, Pierre Shale, NW¼, sec. 17, T. 107 N., R. 71W., Buffalo County, South Dakota. Slides AMNH 54831, 32. Figure 6 (facing page). Palynomorphs from...
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Journal Article
Published: 05 August 2015
Canadian Journal of Earth Sciences (2015) 52 (8): 581–589.
... stages in the evolution of the Chelonioidea ( Zangerl 1953 ; Brinkman et al. 2006 ). For example, Nichollsemys Brinkman et al., 2006 , which is represented by two skulls from the late Campanian Bearpaw Formation of Alberta, Canada, and a partial skull from the DeGrey Member of the Pierre Shale...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(07)
... Coasts. Cylindracanthus had never before been recorded from the Western Interior. Specimen. SDSM 66288, major portion of pectoral fin from a concretionary layer in the DeGrey Formation of the Pierre Shale Group, Hyde County, South Dakota. Derived from SDSM locality V9324. Order...
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2427(01)
... on the basis of invertebrate fossils of the DeGrey Member. Vertebrate paleontology of the Pierre Formation now includes many and varied research projects, and fossil fish are abundantly represented in the record. Parris et al. (Chapter 7) examined some aspects and new discoveries of this extensive record...
Journal Article
Journal: PALAIOS
Published: 01 May 2017
PALAIOS (2017) 32 (5): 330–336.
.... In addition to a suitable sample, field notes record the preservation of many mosasaurs within calcium carbonate, iron-manganese, and gypsum-phosphate concretions. Specimens were acquired from six formations of the Pierre Shale Group, the Gammon Ferruginous, Sharon Springs, Mitten Black Shale, Gregory, DeGrey...
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Journal Article
Journal: Economic Geology
Published: 01 July 2002
Economic Geology (2002) 97 (4): 733–755.
...)           zircon U-Pb                     VHMS and stratiform Cu-Zn-Pb deposits hosted by Bookingarra and DeGrey Groups               Whim Creek               Mons Cupri G 117.806 –20.883 Sericite in altered wall rock to Laser Ar-Ar >2626 This study...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 2003
AAPG Bulletin (2003) 87 (10): 1547–1574.
... are the Fortescue, Ashburton, and DeGrey, each discharging greater than 200 million m 3 annually, mainly during floods ( Figure 1A ). These rivers are fed by intermittent storm and cyclone runoff in a tropical semidesert climate and have spectacular gorges ( Semeniuk, 1996 ). However, deltas of these modern rivers...
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