Becq-Giraudon J.F. (1990) Cone in cone structure in an environment of siliciclastic deposition. New observation on Lower Ordovician cone-in-cone structures of the Montagne Noire, south French Massif central. Geologie de la France, (2), 11-19. 5. Boggs S. (2005) Principles of Sedimentology and Stratigraphy. Upper Saddle River, N.J.: …
(1) Shatter cone striations have a roundish shape, whereas cone-in-cone striae are steplike; (2) shatter cones never show scaled surfaces; (3) broken cone-in-cone structures invariably produce one ...
The best developed cone-in-cone structures occur in Core Section 330-5-1. Figure 1 shows a section across one side of a major cone structure with an apical angle close to 60°. The prominent partings separating in-dividual cones are filled with soft clay, but thinner clay partings mark smaller parasitic cones. Ribbing features
Cone-in-Cone Calcitic Structure - A True Rarity! Large Cone-In-Cone Sedimentary Structure - A Mysterious Geologic Oddity - From Iowa, USA JonesMineralCabinet Star Seller Star Sellers have an …
Large fossils were found of the Rhinoceros, the Horse, the Buffalo, the Antelope, and of several carnivorous animals; the group of fossil faunas as a whole involving the condition that a plateau in the Himalayan Mountains had then such a climate as enabled the Ehinoceros and several subtropical forms to exist. semitropical genus, and there is no …
The structure called cone-in-cone attracted my attention when I was working at certain forms of jointing and spherulitic structures in rocks, and has been …
Cone-in-cone structures are strange features found as interbeds in fine-grained siliciclastic rocks and sometimes found in the outer layers of concretions. They consists of sets of conical structures stacked up …
Section snippets General considerations about cone-in-cone structures. Carbonate cone-in-cone (CIC) structures are a minor sedimentary structure in calcareous layers within shales and in the outer parts of septaria-type concretions; CIC resembles a set of concentric, right circular cones fitting one into another in inverted …
Cone-in-Cone Structure in a Coal-Seam - Volume 5 Issue 12. To save this article to your Kindle, first ensure coreplatform@cambridge is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account.
Bedding-parallel fibrous veins (beef and cone-in-cone): Worldwide occurrence and possible significance in terms of fluid overpressure, hydrocarbon generation and mineralization. Marine and Petroleum Geology, Vol. 43, Issue., p. 1.
Cone-in-cone structure is observed in the Kosho Alternation Member of the Itsukmachi Group (Miocene) exposed along the Akigawa River in Akiruno City, Tokyo. This sedimentary structure has long … Expand. PDF. Save. Origin of spherulitic and cone-in-cone concretions in Cambro-Ordovician black shales, St Lawrence Estuary, Quebec, …
cone-in-cone structure A secondary sedimentary structure consisting of small cones nested one inside another and most commonly made from calcium carbonate. They are believed to form by the growth of fibrous crystals in the sediment while this is still plastic. Source for information on cone-in-cone structure: A Dictionary of Earth Sciences …
Previous theories on cone-in-cone structure origin have failed to explain some of its features, such as the absence of cone-in-cone in veins other than horizontal and the cross-cutting relations of conical surfaces to detritical clay films. They have neither taken in account the importance of pore pressures in the process of growth of veins and …
cones are on the undersides of layers they are smaller and have bases downward, (4) sharp blows with a hammer on fibrous calcite produce percussion cones that approximate cone-in-cone,(5) solution and re arrangement of fibers are present along minor faults that cut the fibers, (6) slickensided phenomena are present between the cones, and (7) solu
Here is a nice book, titled "The Nature and Origin of Cone in Cone Structure" by Bertram G. Woodland. Cone in cone structures have been found in Pennsylvania, Kansas, West ia and other states, as well as other countries besides the United States. I bring this non-mineral information to you simply because I do not …
Problems related to projections on closed convex cones are frequently encountered in optimization theory and related fields. To study these problems, various unifying ideas have been introduced, including asymmetric vector-valued norms and certain generalized lattice-like operations. We propose a new perspective on these studies by …
Important differences include: (1) Shatter cone striations are of distinctly roundish shape, whereas cone-in-cone striae are step-like; (2) shatter cones never show scaled surfaces; (3) broken cone-in-cone structures invariably produce one surface with striated cone features, but its opposite side would display scaled cone cups; (4) shatter ...
Bedding-parallel fibrous veins (beef and cone-in-cone): Worldwide occurrence and possible significance in terms of fluid overpressure, hydrocarbon generation and mineralization. Marine and Petroleum Geology, Vol. 43, Issue., p. 1.
Morphological features of the columnar-stratiform stromatolites, which resemble the cone-in-cone structure, from Neogene lacustrine sediments of northern Vietnam are analyzed. Their structural-textural peculiarities and interrelations with the host terrigenous sediments of a stromatolitic buildup are discussed. It is shown that stages of …
Cone cells, or cones, are one of the two types of photoreceptor cells that are in the retina of the eye which are responsible for color vision as well as eye color sensitivity; they function best in relatively bright light, as opposed to rod cells that work better in dim light. Cone cells are densely packed in the fovea centralis a 0.3 mm diameter rod-free area with very thin, …
More complex on a smaller scale are "cone-in-cone" structures, yet these are also common within bedding-parallel veins. For both beef and cone-in-cone we have compiled a worldwide catalogue (157 localities). Typically, the veins consist mainly of white gangue minerals (for example, calcite, gypsum, or quartz), but may also contain …
The structure called cone-in-cone attracted my attention when I was working at certain forms of jointing and spherulitic structures in rocks, and has been studied in a desultoiy fashion ever since. Moreover, the Museum of University College possesses some good specimens of cone in-cone obtained by the late Prof. Morris, …
13.4-thenatureandoriginof cone-in-conestructure bertramg.woodland n m.4 fieldiana:geology volume13,number4 publishedby chicagonaturalhistorymuseum march 6,1964 geologylibrary
Usually, a structure's roof rises to a point, cones and conical shapes have also been used in interior atriums, walls, and the entire building massing. Today, this form can be seen in residential, commercial and cultural projects worldwide. While cones may seem whimsical, they are also functional. The reason they are often used in roofs is ...
It is discovered that cone-in-cone structure develops radially around the calcareous concretions, with conical apex pointing straight to the concretion center; the major mineral composition of ...
The cone-in-cone structure consists of coaxially nested right circular cones forming more or less densely packed sets of columns.
Cone-in-cone structures were chosen for this work mainly for the reasons that they exhibit a character which would suggest a compressive origin, on a scale small enough to study in hand-spechnen, and that from previous descriptions of their morphology, they would appear to be inconsistent with the results of the photoclastic study. ...
In impact structures, the size of the cones is between centimeters and meters. Fully developed cones are rare which is explained by rock inhomogeneities. In the extreme, shatter cones may degenerate into shatter cleavage (in slaty rocks). Fig. 2. Shatter cone negative fracture markings showing strongly varying orientation. Kentland impact crater.