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Verdun Formation

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Journal Article
Published: 01 June 2015
Journal of Sedimentary Research (2015) 85 (6): 646-659.
... with Eocene forearc deposition, and syndepositional DZ is used to revise maximum depositional age for the upper Eocene Helico Member and Verdun Formation. Progressive subsidence and arc shut-down in the late Eocene coincide with arc collision to the north, uplift of the Amotape block, subduction erosion...
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Series: SEPM Special Publication
Published: 01 January 2009
DOI: 10.2110/sepmsp.093.287
EISBN: 9781565762978
... in several of the wells utilized in this study. FIG. 1. —Geological map of the Northwestern region of Peru, showing locations of the area studied. Abstract The Talara Basin in northwestern Peru includes two Paleogene lithostratigraphic units: the Mogollon Formation and the Talara Group...
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Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP326.16
EISBN: 9781862395749
... the Jequitai Group, San Francisco Basin ( Frimmel & Fölling 2004 ); Sturtian (717–684 Ma) within the Jacarecica/Ribeirópolis Formation, northern margin of the San Francisco Craton ( Sial et al. 2006 ); Marinoan (635 Ma) within the Jacadigo Group, Paraguay Belt ( Alvarenga et al. 2004 ); Gaskiers (584...
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Journal Article
Journal: PALAIOS
Published: 01 February 2011
PALAIOS (2011) 26 (2): 99-105.
...., 2008 ). Specimens in this study lack this structure, having a flattened floor in tunnels and rounded floor in the chambers ( Figs. 4B , 5 ). Absence of such a median ridge was also recorded by Hasiotis et al. (2004) in some burrows from the Lower Triassic Fremouw Formation of Antarctica...
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Journal Article
Journal: Paleobiology
Published: 01 January 2015
Paleobiology (2015) 41 (1): 187-201.
...–10.0 mm). In order to increase the number of samples, we also conducted comparisons for several additional samples of Lirophora spp., using all drilled specimens regardless of length: L. athleta from the Jackson Bluff locality, Jackson Bluff Formation ( Cancellaria zone...
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Journal Article
Published: 01 August 2011
Quarterly Journal of Engineering Geology and Hydrogeology (2011) 44 (3): 293-306.
... chronostratigraphy, consistent with more modern international stratigraphical practice but less detailed than the 1:10 000 British maps. It shows bedrock to comprise marine sediments all ascribed to the Ieper Group, of Early Eocene (Ypresian) age: Gent Formation forming much of the crest of the Wytschaete...
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Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (3): 503-521.
.... At the same time, protective skeleton originated in animals living above the sediment surface. Apparently, the diversification of predators in the earliest Cambrian forced other animals to invest energy either in digging or in a protective armor (“the Verdun Syndrome”). True mud-eaters appeared later...
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Journal Article
Journal: Geophysics
Published: 01 January 2002
Geophysics (2002) 67 (6): 1729-1739.
... more refined depth analysis of the anomaly. Magnetic properties of soils and weathered surficial formations can be significantly different from those of the parent rock. This fact, observed 50 years ago ( Leborgne, 1955 ; Cook and Carts, 1962 ), was at the origin of significant developments in both...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 2005
AAPG Bulletin (2005) 89 (11): 1519-1545.
..., and conglomerate deposited almost continuously during the early Tertiary. Most of the Eocene sandstone intervals are producing reservoir horizons and are illustrated on the simplified stratigraphic column of Figure 2 (Petrobras Energia S.A., 2001, personal communication; Higley, 2004 ). The Redondo Formation...
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Journal Article
Journal: PALAIOS
Published: 01 September 2010
PALAIOS (2010) 25 (9): 565-575.
... ). In other cases the relationship is less clear; for example, a bed from the Ust'Pinega Formation bears several fan-shaped sets of scratches that surround a Kimberella -sized area lacking scratch marks (e.g., Seilacher et al., 2003 , fig. 3). Perhaps the best evidence for the linkage of these traces...
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Journal Article
Published: 01 March 2007
Journal of Paleontology (2007) 81 (2): 331-351.
... sandstones of the Otuma Formation. Some mollusks found with C. cochleiformis suggest a Late Eocene age based on their occurrence in the Chira-Verdun sequence of northern Peru ( DeVries, 2004 ). A single specimen of C. cochleiformis from Otuma outcrops at Cerro Santa Cruz, near Paracas (DV 1154-1...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP343.20
EISBN: 9781862395916
... opened in 1937. The son of a pharmacist, Yves Milon had undertaken medical studies in Rennes at the beginning of World War I. In 1916 he was enrolled in the army and fought at the battle of Verdun. He was injured in May 1918 during a poison gas attack and was hospitalized until March 1919. He...
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Journal Article
Journal: Geology
Published: 01 August 2010
Geology (2010) 38 (8): 711-714.
.... Collier F.J. , 1994 , The fossils of the Burgess Shale : Washington, D.C ., Smithsonian Institution Press , 238 p . Bryant I.D. Pickerill R.K. , 1990 , Lower Cambrian trace fossils from the Buen Formation of central North Greenland: Preliminary observations : Rapport Grønlands...
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Series: AAPG Memoir
Published: 01 January 2014
DOI: 10.1306/13441852M1053605
EISBN: 9781629812670
... their Haynesville wells, many turned to microseismic monitoring to better understand how the formation responded to different pumping programs and how that response should affect a field-wide development plan. The Haynesville posed some particular difficulties to monitoring with geophones placed at near reservoir...
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Journal Article
Published: 01 January 2006
Micropaleontology (2006) 52 (2): 97-150.
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Journal Article
Published: 01 March 2014
Journal of Paleontology (2014) 88 (2): 284-298.
... al., 1992 ), the White-Inyo Mountains in western U.S.A. ( Alpert, 1975 ), the Dengying Formation in south China ( Weber et al. 2007 ; Chen et al., 2013 ), central Australia ( Walter et al., 1989 ), and central Spain ( Vidal et al., 1994 ; Cortijo et al., 2010 ). Bilobed trace fossils from Uruguay...
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Series: Geological Society Special Publication
Published: 01 January 2011
DOI: 10.1144/SP354.14
EISBN: 9781862396029
... ; Guillien 1951 ; Tricart 1967 ; Jomelli et al. 2003 , 2004 ). Gelifraction, or frost shattering, is a complicated process dominated by ice formation and bedrock properties. The role of ice segregation in bedrock weathering is discussed by Hallet et al. (1991) while Matsuoka (1991) and Matsuoka...
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Journal Article
Journal: Paleobiology
Published: 01 January 2015
Paleobiology (2015) 41 (1): 1-15.
... of glauconitic siliciclastic rocks in the inner detrital belt is best explained, according to Peters and Gaines, by this flux of weathering products; the chemical conditions associated with the formation of these deposits are much different from those found today. Consistent...
Journal Article
Journal: Geophysics
Published: 24 February 2012
Geophysics (2012) 77 (2): F1-F11.
..., the obtained matrix, say A, has to be mirrored, e.g., in Matlab through fliplr(A) , to be compatible with polyhedron.f in computing the outer plane normals required from the line integral approach. Let us assume that the two data files describing the source are available in the expected format, i.e...
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Journal Article
Published: 01 May 2006
Journal of Paleontology (2006) 80 (3): 455-476.
... preserved. For the Betsiboka River, which runs through the Mahajanga Basin. Coelochrysalis misurinensis Zardini, 1978 ; Triassic, St. Cassian Formation, Italy. Protoconch sinistrally coiled, deviation from teleoconch 180°, teleoconch conical, whorls straight-sided, sutures angular, with three strong...
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