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calcispheres

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Journal Article
Journal: AAPG Bulletin
Published: 01 September 1980
AAPG Bulletin (1980) 64 (9): 1560.
... in lithic properties, but the upper contact is obscure and necessarily arbitrary. The Cuesta del Cura averages 150 m in thickness; a maximum of 190 m of Agua Nueva(?) was measured and sampled. Foraminifers and calcispheres are common to abundant in most samples. Along with radiolarians, they form...
Journal Article
Published: 01 April 1978
Micropaleontology (1978) 24 (2): 210-221.
Journal Article
Published: 01 October 1967
Micropaleontology (1967) 13 (4): 465-472.
Journal Article
Published: 01 January 1965
Journal of Paleontology (1965) 39 (1): 143-145.
...Mark Rich Abstract 'Calcispheres' and forms belonging to 'calcisphere de forme A' of Lombard and Monteyne (1952) were found in subsurface samples of the Duperow Formation of Late Devonian age in western North Dakota. 'Calcisphere de forme A' belongs to the foraminiferal genus Umbellina (Maslov...
Journal Article
Published: 01 January 1950
Bulletin de la Société Géologique de France (1950) S5-XX (7-9): 467-478.
Journal Article
Published: 01 January 1941
Bulletin de la Société Géologique de France (1941) S5-XI (7-9): 357-365.
Journal Article
Published: 01 March 1975
Journal of Sedimentary Research (1975) 45 (1): 266-271.
...D. S. Marszalek Abstract The dasycladacean green alga Acetabularia antillana periodically appears in large numbers in shallow-water sheltered environments in the Florida Keys. The calcified aplanospores or reproductive cysts are known as calcispheres when fossilized. The hollow calcispheres from...
Image
Microgranular and porcelaneous foraminifera; <b>calcispheres</b>.  2.1–2.4, 2.13: ...
in > GeoArabia
Published: 01 October 2005
Plate 2: Microgranular and porcelaneous foraminifera; calcispheres. 2.1–2.4, 2.13: Earlandia? spp. 2.1. Longitudinal section. Sample DV 79-122. Photo 134. Huqayl Member. Early Dzhulfian. Jabal Duhaysan ( Figure 2 ). x 140. 2.2: Longitudinal section. Sample VD 82-189. Photo 37. Huqayl Member
Image
Fig. 7.—Calcarenite with scattered <b>calcispheres</b>; Mississippian, Rundle grou...
Published: 01 August 1958
PLATE 2. Fig. 7.—Calcarenite with scattered calcispheres; Mississippian, Rundle group. ×60. Fig. 8.—Calcarenite, rock surface was conspicuously speckled with patches of more coarsely crystalline calcite; Mississippian, Rundle group. ×60. Fig. 9.—Calcirudite, showing part of composite grain
Journal Article
Published: 01 June 1970
Canadian Journal of Earth Sciences (1970) 7 (3): 946-981.
...., radiosphaerid calcispheres, and algal? borings. The calcareous foraminifers are: Parathurammina sp. cf. P . spinosa Lipina, P . sp., Bisphaera sp., lagenid-like form, Paratikhinella sp. cf. P . cannula (Bykova), P . sp., Tikhinella sp. cf. T . measpis Bykova, T . sp., Evlania ? sp., Eonodosaria sp. cf. E...
Journal Article
Journal: Geology
Published: 01 June 1992
Geology (1992) 20 (6): 551-555.
...-upward Berriasian-Valanginian (Lower Cretaceous) units were recovered which clearly reflect deposition in the earliest oceanic environments. The lower two units are transgressive lag deposits. The uppermost unit is composed of calcisphere-nannofossil chalk and six interbedded bentonite horizons...
Series: SEPM Core Workshop Notes
Published: 01 January 1985
DOI: 10.2110/cor.85.07.0125
EISBN: 9781565762626
... mudstones were deposited on top of the shelf and pinnacle reefs while stromotolites, dolomites, and starved-basin anhydrites accumulated in the inter-reef areas. The pinnacle reefs contain four Hthofacies: the Stromatoporoid, Tabulate Coral Boundstone; the Codiacean Algae, Calcisphere, Peloid Packstone...
Journal Article
Journal: AAPG Bulletin
Published: 01 September 1968
AAPG Bulletin (1968) 52 (9): 1662-1669.
... permeable intergranular porosity in carbonate banks, which may be composed of pellets, oölites, or admixtures of fragmental debris. The presence of fossil cavities, calcispheres, and reefoid deposits may modify the overall fabric. In addition to these depositional characteristics, tectonism can alter...
FIGURES | View All (14)
Journal Article
Journal: AAPG Bulletin
Published: 01 August 1967
AAPG Bulletin (1967) 51 (8): 1688-1689.
... into somewhat less porous, but highly permeable, intergranular porosity present in carbonate banks, which may be composed of pellets, oölites, or admixtures of fragmental debris. The presence of fossil cavities, calcispheres, and a few reefoid deposits may modify the overall fabric. In addition...
Image
Hemipelagite deposit of calcareous <b>calcispheric</b> dolosiltstone; arrow denote...
Published: 01 March 2018
Figure 7. Hemipelagite deposit of calcareous calcispheric dolosiltstone; arrow denotes base of inversely graded bed. Calcispheres appear as white sand-sized grains and are likely planktonic in origin. Core diameter is 9.0 cm.
Image
—Photomicrograph of micrite. <b>Calcisphere</b> and spicules in host of micrite-mi...
Published: 01 September 1970
Fig. 15. —Photomicrograph of micrite. Calcisphere and spicules in host of micrite-microspar. Clear areas are sparry calcite. Ordinary light. Scale is 0.5 mm.
Journal Article
Published: 01 March 2018
Bulletin of Canadian Petroleum Geology (2018) 66 (1): 259-287.
...Figure 7. Hemipelagite deposit of calcareous calcispheric dolosiltstone; arrow denotes base of inversely graded bed. Calcispheres appear as white sand-sized grains and are likely planktonic in origin. Core diameter is 9.0 cm. ...
FIGURES | View All (23)
Series: AAPG Memoir
Published: 01 January 2016
DOI: 10.1306/13541957M1103660
EISBN: 9781629812748
... plus lithostratigraphic and petrophysical data from a further 81 cored wells were used as seed points to constrain the correlation of 12 regional horizons in 1729 wells (see Chapter 1, Part 2 , Denne and Breyer, 2016). Micropaleontologic analyses (foraminifera, radiolaria, calcispheres, etc...
FIGURES | View All (49)
Series: AAPG Memoir
Published: 01 January 2016
DOI: 10.1306/13541980M1103494
EISBN: 9781629812748
... Figure 6 Photomicrographs showing the common faunal elements in mid- and outer shelf settings during deposition of the Lower Eagle Ford in the study area: (A) globigerinid foraminifer in limestone; (B) radiolarians replaced by calcite (red arrows) and calcispheres (yellow arrows) in limestone...
FIGURES | View All (20)
Journal Article
Published: 01 November 2013
Journal of Paleontology (2013) 87 (6): 1077-1106.
...Jens E. Wendler; Ines Wendler; Brian T. Huber A bstract Extraordinarily well-preserved pithonellid microfossils (calcitarchs, “calcispheres”) from the Turonian (upper Cretaceous) of Tanzania reveal previously unknown morphological traits, crystallographic patterns, and chemical signatures...
FIGURES | View All (18)