New insights in the origin of cone-in-cone structures

1994-9-1 · Abstract. 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 ...

(PDF) Cone-in-cone structure: New data

2020-2-29 · The article presents the results of investigating calcite lenses with a cone-in-cone structure from Middle Devonian clay terrigenous deposits in the Middle Timan.Methods. The investigation of ...

Conein Cone Petrography

2022-1-7 · Most cone-in-cone structures are composed of fibrous calcite and films of argillaceous material.The cone structure consists of nested and interfering cone-shaped, plumose aggregates of calcite fibers. The individual fibers are generally less than 6 ^m wide but may be up to 3 cm long; plumose aggregates of fibers may attain 7 cm in length.

Cone-in-cone structures: A new investigation | Semantic …

Abstract The results of a Photoelastic study of the development of fractures in homogeneous materials subjected to compression differed from the previously described nature of cone-in-cone structures. These structures are critically examined and the results compared with the theoretically derived fracture surfaces. Deductions as to the nature of the material at the time …

The shielding cone in spherical aromatic …

2017-4-18 · A direct correlation between π- and spherical aromaticity of the aromatic structures was established by showing that they shared a characteristic shielding cone, resulting from a specific orientation of the applied field. Herein, …

The Cone-in-Cone Structure and Its Origin

2002-11-1 · Host rock inclusions usually form boundaries between adjacent cones (Kolokol''tsev, 2002). The CIC structure was first described in the 19th …

La structure cône in cône en milieu de dépôt siliclastique

La structure cône in cône en milieu de dépôt siliclastique : observations nouvelles sur les cône in cône de l''ordovicien inférieur de la Montagne Noire, sud du Massif central français. Cône in cône structure in an environnent of siliciclastic déposition. New observations on Lower Ordovician cône in cône structures of the Montagne ...

jsjgeology

2016-3-6 · CONE-IN-CONE STRUCTURES . 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 within each other. Mineralogically, they are often composed of finely-crystalline fibrous calcite.

Pedological nodules with cone in cone structure in the …

1992-9-1 · The occurrence of (1) calcite aureoled quartz, and (2) vertical cylindrical features ("rhizocretions" in literature), and subspherical or unevenly shaped nodules resulting from the coalescence of smaller elements ("nodular calcrete") is reported in various Permian continental series from Western Europe (Sierra Morena, Spain) and North Africa (Central Meseta of …

Structure of the human cone photoreceptor cyclic …

2021-12-30 · A cryo-EM structure of the human cone photoreceptor CNG channel reveals an odd subunit stoichiometry and unique structural features conferred by a distinct subunit, providing a framework to study ...

Cone-in-cone Structure in the Itsukmachi Group …

2009-11-12 · 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 been studied in Europe and North America but there remains many problems still in debate. Study of this structure, however, has mostly been ignored ...

Cone-in-cone structure: New data | Shumilov

Tugarova M.A., Sinai M.Yu. (2011) Cone-in-cone structure as an indicator of the imposed hydrocarbon fluidization at a diagenesis stage (on the example of Triassic profile of east islands of Svalbard archipelago). Mineral-nye indikatory litogeneza [Mineral indicator of lithogen-esis]. Syktyvkar, Geoprint Publ., 248-249.

cone in cone structure in Chinese

cone in cone structure in Chinese : :…. click for more detailed Chinese translation, meaning, pronunciation and example sentences.

Kinematics of Cone-In-Cone Growth, with Implications for …

Cone-in-cone is an enigmatic structure. Similar to many fibrous calcite veins, cone-in-cone is generally formed of calcite and present in bedding-parallel vein-like accumulations within fine-grained rocks. Unlike most fibrous veins, cone-in-cone contains conical inclusions of host-rock material, creating nested, parallel cones throughout. A long-debated aspect of cone-in-cone …

Latest Cretaceous cone-in-cone structures and soft …

2011-3-1 · Unusual cone-in-cone structures are preserved in fibrous celestite veins hosted by carbonatic rocks. The veins are early diagenetic features formed near the water-sediment interface in a deep-marine environment of latest Cretaceous (early Maastrichtian) age. New field and microscopic evidence on the veins and their host rocks indicates that ...

Cone Structure

Additionally, CDs have well-defined cylindrical cone structure containing a cavity of about 5–10×10−10 m in diameter and 7.9–8×10 −10 m deep, which depend on the number of glucose units [75]. Several key characteristic features of α, β, and γ …

The Cone-in-Cone Structure and Its Origin | SpringerLink

The probable indicative role of cone-in-cone structure in the mapping of fluid-conducting systems is a consequence of the proposed hypothesis. Download to read the full article text REFERENCES. Atlas tekstur i struktur osadochnykh gornykh porod (Atlas of Structures and Textures of Sedimentary Rocks), part 2: Carbonate Rocks, Dmitrieva, E.V ...

Cone Structures High Resolution Stock Photography and …

Find the perfect cone structures stock photo. Huge collection, amazing choice, 100+ million high quality, affordable RF and RM images. No need to register, buy now!

Cone in Cone structures in the Cruse Formation of Trinidad

The cones are usually at right angles to the sedimentary layering or bedding. The ridges on the side of the cone become less pronounced near the apex. Growth of fibrous crystals in layers results in vertical pressures in the rock causing small breakages. As pressure continues, the breakages overlap causing the stepped-cone structures.

Comparing Cone Structure and Function in RHO

2020-4-9 · Purpose: To study cone structure and function in patients with retinitis pigmentosa (RP) owing to mutations in rhodopsin (RHO), expressed in rod outer segments, and mutations in the RP-GTPase regulator (RPGR) gene, expressed in the connecting cilium of rods and cones. Methods: Four eyes of 4 patients with RHO mutations, 5 eyes of 5 patients with RPGR …

Cones structure and seed traits of four species of …

The cone structure and seed traits of Siberian dwarf pine show remarkable divergence from the other three species of pine. The size of the cone and seed is the smallest, the shape of seeds is globular, and the seeds and scales are closely combined, traits that allow birds to force open the scales and obtain the seeds. ...

Cone in Cone Structures

Cone in Cone - SERC

Cone-in-Cone Structure | Geological Magazine

2009-5-1 · Cone-in-Cone Structure - Volume 9 Issue 7. To save this article to your Kindle, first ensure [email protected] 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.

Cone-In-Cone Structure | Geological Magazine

2009-5-1 · 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.

[PDF] Cone-in-Cone Structure | Semantic Scholar

semitropical genus, and there is no warrant for attributing to it, as Dr. Blanford does, a capacity for living under conditions like those of the Hnndes plateau. The only species of Ehinoceros known to me which were the companions of the Horse, etc., etc., elsewhere, were the B. antiquitatis and the B. Merchii, to one of which I believe the remains probably belonged. My view in regard to …

Cone-in-cone concretions from western New York

The cone-in-cones are thought to have originated from a syngenetic concretion of fibrous aragonite. The conical structures are believed to have formed while the surrounding clay materials were still plastic, and that clay was introduced along the major fractures as the cone-in-cone structure developed. This content is PDF only.

Frank Festa

2013-3-20 · Cone in cone structures are not glamorous shiny gemstones. On the contrary, just the opposite, composition wise they are sedimentary in nature containing ground particles of rock, mineral and clay particles. Some have been found composed of gypsum, siderite and even coal. Conical, tapering, fossil looking, cemented in a specific rock layer ...

Abstract: SIGNIFICANCE OF CONE-IN-CONE STRUCTURES …

2016-2-1 · Many in the last century have proposed mechanisms for development of cone-in-cone structures. Surely, there are many likely explanations. Synsedimentary calcite cements defining cone-in-cone structures within mudstones deposited during marine highstands from the mid-Cretaceous Ashville Formation in Saskatchewan, Canada and the Middle Pennsylvanian Floris …

Wooster''s Pseudofossils of the Week: Cone-in …

2015-10-30 · These are cone-in-cone structures, not shatter cones. This sample was undoubtedly collected from the Ohio Shale, which contains thin cone-in-cone limestone beds throughout its outcrop in Ohio. True shatter cones do occur …

jsjgeology

2016-3-6 · CONE-IN-CONE STRUCTURES . 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 …

cone in cone structures

pollen cones of cycads are similar to seed cones, and pollen is born on the lower surface of scale-like structures. It is generally believed that in the ancestral type, cycads bore ovules directly on leaves. Over time, these fertile leaves evolved into a condensed and simplified form—the cycad cone. In Cycas, the leaflike structure was some-