scholarly journals Biostratigraphy of Upper Jurassic of the Valy clay pit (Samarskaya Luka) by ammonites, ostracods and dinocysts

2021 ◽  
Vol 66 (3) ◽  
Author(s):  
Mikhail A. Rogov ◽  
◽  
Julia N. Savelieva ◽  
Olga V. Shurekova ◽  
◽  
...  
Keyword(s):  
Upper Jurassic ◽  
Ecological Analysis ◽  
Central Russia ◽  
Short Time ◽  
First Time ◽  
The Village ◽  
Upper Kimmeridgian ◽  
Biostratigraphic Units ◽  
Lower Kimmeridgian ◽  
Samarskaya Luka

The results of integrate biostratigraphic study of Upper Jurassic deposits of the clay pit near the village of Valy (Syzran district, Samara region) are presented. For the first time a bed-by-bed description was made and the subdivision of the section into zones, subzones and biohorizons by ammonites was established. Bauhini and Kitchini zones (Bayi subzone) are established in the Lower Kimeridgian, while Upper Kimmeridgian is represented by Autissiodorensis zone only. In the Lower Volgian Sokolovi and Pseudoscythica zones were recognized, while the Middle Volgian is represented by the Panderi zone. The age of the regionally developed unconformity at the base of the Trazovo Formation has been clarified. As in the sections located to the south from studied section, this unconformity is located in the base of the Autissiodorensis zone, overlying different Oxfordian and lower Kimmeridgian. For the first time for Kimmeridgian of Central Russia in the marlstone band of the Kitchini zone (bayi biohorizon) solitary corals conditionally attributed to the genus Trochocyathus were found. Along with corals other warm-water taxa (belemnites Hibolithes, rare ammonites Taramelliceras) were found in the same bed, suggesting deposition of this bed during the short-time warming event. 6 biostratigraphic units (zone and beds with fauna) were recognized by ostracods, along with 2 dinocyst-based units (assemblage and zone) which are compared with the stratigraphic subdivisions by these groups, previously proposed for the Kimeridgian and Volgian stages of the Russian Platform. The paleo-ecological analysis has allowed to assume, that sediments have accumulated in the conditions of warm shallow eutrophic basin with depth to 50 m, with gradual increase of eutrophy through time. At some levels, short-term episodes of severe shallowing or freshening are recorded by ostracods.

Biostratigraphy of the Bajocian-Bathonian boundary interval in northern Siberia: new data on belemnites from the Yuryung-Tumus peninsula

2017 ◽  
Vol 188 (1-2) ◽  
pp. 3 ◽  
Author(s):  
Benoît de Lagausie ◽  
Oksana S. Dzyuba
Keyword(s):  
European Russia ◽  
Northern Siberia ◽  
Central Russia ◽  
First Time ◽  
Ammonite Zones ◽  
Biostratigraphic Units

This paper presents a refined belemnite based biostratigraphy for the Bajocian-Bathonian transition in the Yuryung-Tumus peninsula (northern Siberia, Russia). A revision of the Siberian belemnite zonation is proposed. Herein two new belemnite biostratigraphic units are introduced: the Paramegateuthis subishmensis Zone (upper part of the Lower Bajocian) and the Paramegateuthis ishmensis Zone (Lower-Middle Bathonian boundary interval). Paramegateuthis subishmensis STOYANOVA-VERGILOVA, recorded for the first time in Siberia and previously only known from Bulgaria (Sub-Mediterranean domain), provides evidence for correlation of both the Boreal Boreiocephalites borealis and Cranocephalites gracilis ammonite zones with the standard Stephanoceras humphriesianum Zone. The new biostratigraphic data also result in an improved correlation based on belemnites for the Lower-Middle Bathonian of the Boreal (Siberia, North European Russia) and Subboreal (Central Russia) regions.

scholarly journals The palynology of the Kimmeridge Clay and Carstone formations (Upper Jurassic – Lower Cretaceous) at Middlegate Quarry, North Lincolnshire, UK, and its biostratigraphical and palaeoenvironmental significance

2021 ◽  
pp. pygs2021-005
Author(s):  
Roderick D. Black ◽  
Paul Dodsworth
Keyword(s):  
Lower Cretaceous ◽  
Upper Jurassic ◽  
Average Concentration ◽  
Dinoflagellate Cysts ◽  
Content Type ◽  
Palynological Data ◽  
Supplementary Material ◽  
Clay Formation ◽  
First Time ◽  
Lower Kimmeridgian

At Middlegate Quarry, the Carstone Formation is an approximately 0.8 m thick unit of oolitic ferruginous sandstone. It rests unconformably on the lower Kimmeridge Clay Formation (KCF) and is overlain by the Hunstanton Formation (Red Chalk) with an apparently gradational junction. Marine dinoflagellate cysts (dinocysts) are present at a concentration of 9,520 to 13,600 specimens per gramme in the 0.15 m of KCF below the unconformity, and include taxa that confirm ammonite evidence for the intra-Lower Kimmeridgian Substage (Upper Jurassic, Cymodoce Ammonite Zone). A rich recovery of well-preserved Lower Cretaceous palynomorphs is reported for the first time from the overlying Carstone. Reworking of mudstone from the KCF into the formation appears to have provided a local argillaceous preservation matrix at Middlegate. The basal 0.15 m is dominated by palynomorphs derived from the KCF but the interval from 0.15 m to 0.55 m above the unconformity mainly contains indigenous Lower Cretaceous palynomorphs. Dinoflagellate cysts are present in the Carstone at an average concentration of 454 specimens per gramme, and include taxa that probably have stratigraphical range bases above the Aptian – Albian stage boundary; Cyclonephelium compactum, Cyclonephelium intonsum, Endoscrinium heikeae, Leptodinium cancellatum (consistent), Stephodinium coronatum and Stephodinium spinulosum. The additional presence of taxa with range tops / event tops in the Lower Albian Tardefurcata Ammonite Zone (common Cauca parva, frequent Canninginopsis monile and Kleithriasphaeridium eoinodes, and rare Dingodinium albertii, Discorsia nannus and Kiokansium prolatum) indicate probable assignment to this zone. The new palynological data support previous macrofossil (brachiopod) study of the Carstone at Middlegate and nearby Melton Bottom Quarry which tentatively assigns its highest part to the Tardefurcata Zone. The palynological and palynofacies assemblages are interpreted to confirm a relatively proximal to shoreline site of deposition, possibly inner to middle neritic.Supplementary material: One pdf file, with quarry photographs and a palynological distribution chart, is available at https://doi.org/10.6084/m9.figshare.c.5538977

scholarly journals Architrave Slab of the Entrance into the Gate Church of Funa

2021 ◽  
Vol 49 ◽  
pp. 164-175
Author(s):  
Vladimir Petrovich Kirilko ◽  
Keyword(s):  
Middle Part ◽  
Large Fragment ◽  
The South ◽  
Exact Date ◽  
New Information ◽  
Short Time ◽  
First Time ◽  
Architectural Detail ◽  
The Village ◽  
The Church

The gate church of the Theodorite castle near the village of Funa appeared in 1459 and existed to 1778. Left unattended later on, it became decayed, quickly dilapidated, and finally turning into ruin after the earthquake of 1927. The experts’ conclusions concerning its origin are based mainly on the typical features of the architectonics and carved decoration of the structure, correlated with the traditions of Armenian architecture and Seljuk ornamentation. The most exquisite architectural detail of the building is the large slab with relief ornamentation that overlapped from outside the doorway of the south entrance. Two iconographic sources are published for the first time to supply new information about the slab in question along with the results of a substantive study of a large fragment of the artefact which was found by chance outside the castle short time ago. Almost a half of the composition that adorned the outermost part of the architrave survived. Its completely lost middle part can be reconstructed reliably by the photograph taken by N. N. Klepinin and the drawing by D. M. Strukov. The ornamental motif of the slab is one of the most popular in mediaeval art, being typical of the eastern decorative tradition. It is still not possible to discover the origin and exact date of the architrave which was secondary used in the church of 1459. Stylistically, structurally, and technologically it is comparable with carved architectural details of many main buildings of the capital town of Theodoro, which were erected in the 1420s. Therefore, the slab in question possibly has the same chronology, but still it could be made even earlier.

Kimmeridgian and early Tithonian cephalopods from the Kisújbánya Limestone Formation, Zengővárkony (Mecsek Mountains, southern Hungary), their faunal composition, palaeobiogeographic affinities, and taphonomic character

2021 ◽  
Vol 21 (13) ◽  
pp. 265-314
Author(s):  
László Bujtor ◽  
Richárd Albrecht ◽  
Csaba Farkas ◽  
Bertalan Makó ◽  
Dávid Maróti ◽  
...  
Keyword(s):  
Late Jurassic ◽  
First Record ◽  
Internal Mould ◽  
Weathering Processes ◽  
Shell Fragment ◽  
Long Time ◽  
First Time ◽  
Upper Kimmeridgian ◽  
Ammonite Zones ◽  
Lower Kimmeridgian

A new collection at Zengővárkony (Mecsek Mountains, Hungary) provided a rich and diverse but poorly preserved cephalopod-dominated fossil assemblage representing the Kimmeridgian and the lower Tithonian. The material came from mixed scree, soil, and amongst roots affected by weathering processes having been exposed to the elements for a long time. The nautiloid Pseudaganides strambergensis is the first record from the Mecsek Mountains. Due to the weathering, the ammonite fauna consists of mainly fragmentary and dissolved individuals that comprises 528 specimens belonging to 34 species and 30 genera out of which 20 species and 15 genera are reported for the first time from the Mecsek Mountains. The fauna includes specimens of known taxa. No new taxa are introduced. Based on the comparison with other faunas, this assemblage most closely resembles the fauna of the Venetian Alps (Italy). Additional faunal elements include aptychi (Laevaptychus latus, Lamellaptychus murocostatus), belemnites (Hibolithes semisulcatus), and an indetermined brachiopod. The first record of Spiraserpula spirolinites, an encrusting fossil polychaete preserved on the internal mould of a Taramelliceras shell fragment indicates favourable bottom conditions for the epifauna. The presence of Aspidoceras caletanum, Gravesia aff. gigas, and Pseudowaagenia inerme indicates faunal connections with the Submediterranean Province of the Tethys, which is in line with the tectonic and palaeogeographical position of the Mecsek Zone during the Late Jurassic. The ammonite assemblage represents elements of five Tethysian ammonite zones of the Kimmeridgian and Tithonian. The lower Kimmeridgian Herbichi Zone is indicated by Streblites tenuilobatus and Praesimoceras herbichi. The upper Kimmeridgian Acanthicum Zone is indicated by Aspidoceras acanthicum, and the Cavouri Zone by Mesosimoceras cavouri and Aspidoceras caletanum. The upper Kimmeridgian Beckeri Zone is suggested by Hybonoticeras pressulum and Pseudowaagenia inerme. Whereas Gravesia aff. gigas, Lithacoceras aff. siliceum, and Malagasites? denseplicatus are faunal elements characterising the Early Tithonian Hybonotum Zone. Phylloceratid and lytoceratid specimens account only for 12% of the fauna, while the majority of the specimens belong to the Oppeliidae and Ataxioceratidae (60%).

scholarly journals <i>Eripleura,</i> a new genus of ostracod from the Upper Jurassic of England and its relationship with <i>Procytheropteron</i> Ljubimova

1987 ◽  
Vol 6 (1) ◽  
pp. 111-116 ◽  
Author(s):  
Ian P. Wilkinson
Keyword(s):  
Type Species ◽  
New Genus ◽  
Upper Jurassic ◽  
Southern England ◽  
First Time ◽  
Lower Kimmeridgian

Abstract. A new genus of cytherurid ostracod, Eripleura, with the type species E. eleanorae sp. nov. from the Upper Oxfordian (? rosenkrantzi Zone) and Lower Kimmeridgian (baylei Zone) of southern England is described and compared with Procytheropteron. Two further species are described for the first time, Eripleura obliquicosta from the Lower Kimmeridgian cymodoce Zone, and Procytheropteron? elongatum from the Upper Oxfordian tenuiserratum Zone.

Training of Village Teachers in Vilna Educational District in the 1860s and 1870s

2020 ◽  
Vol 58 ◽  
pp. 181-192
Author(s):  
Anna A. Komzolova
Keyword(s):  
Educational Reform ◽  
Rural Teachers ◽  
Cultural Brokers ◽  
The North ◽  
Central Russia ◽  
Russian Intelligentsia ◽  
Trained Teachers ◽  
The Village ◽  
North Western

One of the results of the educational reform of the 1860s was the formation of the regular personnel of village teachers. In Vilna educational district the goal was not to invite teachers from central Russia, but to train them on the spot by establishing special seminaries. Trained teachers were supposed to perform the role of «cultural brokers» – the intermediaries between local peasants and the outside world, between the culture of Russian intelligentsia and the culture of the Belarusian people. The article examines how officials and teachers of Vilna educational district saw the role of rural teachers as «cultural brokers» in the context of the linguistic and cultural diversity of the North-Western Provinces. According to them, the graduates of the pedagogical seminaries had to remain within the peasant estate and to keep in touch with their folk «roots». The special «mission» of the village teachers was in promoting the ideas of «Russian elements» and historical proximity to Russia among Belarusian peasants.

New records of some rare species in the family Hyaloscyphaceae (Ascomycota, Helotiales) from Central Russia

2013 ◽  
Vol 47 ◽  
pp. 135-142
Author(s):  
E. S. Popov
Keyword(s):  
Rare Species ◽  
New Records ◽  
Moscow Region ◽  
North Caucasus ◽  
Central Russia ◽  
The Family ◽  
First Time

Three rare species of discomycetes in the family Hyaloscyphaceae are reported from Central Russia (Oryol and Bryansk Regions). Proliferodiscus tricolor is recorded for the first time in Russia. Comments are made on Aeruginoscyphus sericeus and Eriopezia caesia previously reported only from Moscow Region and North Caucasus respectively.

scholarly journals Efficacy of compressed sodium chloride (CSC) against E. coli and Candida auris in minutes and methods improvement for testing

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Lan N. Truong ◽  
Brayden D. Whitlock
Keyword(s):  
Sodium Chloride ◽  
Improved Method ◽  
Candida Auris ◽  
Antimicrobial Surfaces ◽  
E Coli ◽  
Route Of Transmission ◽  
The World ◽  
Short Time ◽  
First Time ◽  
Time Point

AbstractControlling infections has become one of the biggest problems in the world, whether measured in lives lost or money spent. This is worsening as pathogens continue becoming resistant to therapeutics. Antimicrobial surfaces are one strategy being investigated in an attempt to decrease the spread of infections through the most common route of transmission: surfaces, including hands. Regulators have chosen two hours as the time point at which efficacy should be measured. The objectives of this study were to characterize the new antimicrobial surface compressed sodium chloride (CSC) so that its action may be understood at timepoints more relevant to real-time infection control, under two minutes; to develop a sensitive method to test efficacy at short time points; and to investigate antifungal properties for the first time. E. coli and Candida auris are added to surfaces, and the surfaces are monitored by contact plate, or by washing into collection vats. An improved method of testing antimicrobial efficacy is reported. Antimicrobial CSC achieves at least 99.9% reduction of E. coli in the first two minutes of contact, and at least 99% reduction of C. auris in one minute.

scholarly journals Bactericidal activity of three different antiseptic ophthalmic preparations as surgical prophylaxis

2021 ◽  
Author(s):  
Daniele Tognetto ◽  
Marco R. Pastore ◽  
Gian Marco Guerin ◽  
Giuliana Decorti ◽  
Martina Franzin ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Povidone Iodine ◽  
Bacterial Load ◽  
Viable Cells ◽  
Polyethylene Glycol 1000 ◽  
Oil Concentration ◽  
Short Time ◽  
First Time ◽  
Antiseptic Solutions

Abstract Purpose In the era of antibiotic resistance, there is an increased interest in antiseptic solutions that might represent a reliable option for ocular surface disinfection. The objective of this study is to compare for the first time three different antiseptic ophthalmic preparations to assess their in vitro antimicrobial activity. Methods The antiseptic activity of three commercial ophthalmic solutions, IODIM (povidone-iodine 0.6% in hyaluronic acid vehicle—Medivis, Catania, Italy), OZODROP (nanoemulsion with ozonated oil—concentration not specified—FBVision, Ophthalmic Pharmaceuticals, Rome, Italy), and DROPSEPT (chlorhexidine 0.02% and vitamin E 0.5% Tocopherol Polyethylene Glycol 1000 Succinate—TPGS, Sooft Italia, Montegiorgio, Italy), was tested in vitro on six reference strains by time-killing assays. Viable cells were evaluated after 1, 15, 30 min; 2, 6, and 24 h exposure by seeding 100 µl of the suspension (or appropriate dilutions) on LB agar or Sabouraud-dextrose agar. All plates were incubated at 37 °C for 24 h and evaluated by manually counting the colonies. Results IODIM solution showed a very rapid microbicidal activity: the number of viable cells for all the tested strains was under the detection limit (less than 10 CFU/ml) already after 1 min exposure, and this result was maintained at every incubation time. The rapid antimicrobial activity of povidone-iodine was not replicated when testing the other two antiseptics. Conclusions The study reports the great efficacy in reducing bacterial load in a very short time of povidone-iodine 0.6% compared with other antiseptic preparations.

Generalized eruptive keratoacanthomas of Grzybowski (case report)

2021 ◽  
Author(s):  
И.А. Куклин ◽  
Н.П. Малишевская ◽  
М.М. Кохан ◽  
Г.Д. Сафонова ◽  
О.Г. Римар ◽  
...  
Keyword(s):  
Clinical Care ◽  
Clinical Manifestations ◽  
Review Of The Literature ◽  
Trunk Limbs ◽  
The Face ◽  
Spontaneous Involution ◽  
Atrophic Scars ◽  
Short Time ◽  
First Time ◽  
Aromatic Retinoids

В статье представлен краткий обзор литературы о клинических проявлениях, современных методах диагностики и лечения чрезвычайно редкого заболевания – множественной эруптивной кератоакантомы типа Гржебовски. Заболевание характеризуется возникновением сотен или тысяч генерализованных зудящих узелков на коже лица, туловища, конечностей, половых органов, слизистой полости рта и гортани в течение короткого времени. Заболевание развивается в возрасте старше 40 лет, имеет рецидивирующее течение, возможна спонтанная инволюция отдельных элементов с формированием участков депигментации или атрофических рубцов. Авторы приводят случай собственного клинического наблюдения множественной эруптивной кератоакантомы типа Гржебовски у пациента 50 лет, который обратился на консультацию к дерматовенерологу в клинику Уральского НИИ дерматовенерологии и иммунопатологии. Длительность болезни на момент обращения составляла 2,5 года, ее возникновению предшествовало неоднократное посещение больным стран с избыточной инсоляцией, что может рассматриваться в качестве этиологического фактора развития заболевания. Диагноз впервые был заподозрен на консилиуме дерматовенерологов на основании клинической картины заболевания и в дальнейшем верифицирован данными патоморфологического исследования биоптата пораженной кожи. Показана эффективность применения ароматических ретиноидов в лечении множественной эруптивной кератоакантомы типа Гржебовски и приведены побочные эффекты, которые развились у больного при самостоятельном увеличении дозы ацитретина до 70 мг/сутки. В статье констатируется чрезвычайно редкая встречаемость данного заболевания, о чем свидетельствует приведенный клинический случай, диагностируемый впервые более чем за 90-летнюю историю существования института. Подчеркивается важность консолидации клинического опыта нескольких ведущих дерматовенерологов для диагностики множественной эруптивной кератоакантомы типа Гржебовски. The article presents a brief review of the literature about clinical manifestations, modern methods of diagnosticsand treatment of an extremely rare disease – generalized eruptive keratoacanthomas of Grzybowski. The disease is characterized by the appearance of hundreds or thousands of generalized itchy nodules on the skin of the face, trunk, limbs, genitals, oral mucosa and larynx within a short time. The disease develops at the age of over 40, has a recurrent course, spontaneous involution of individual elements with the formation of areas of depigmentation or atrophic scars is possible. The authors describe a case of their own clinical care of generalized eruptive keratoacanthomas of Grzybowski in a 50-year-old patient who consulted a dermatovenerologist at the clinic of the Ural Research Institute of Dermatovenerology and Immunopathology.The duration of the disease at the time of visit to a doctor was 2,5 years, its occurrence was preceded by repeated visits to countries with excessive insolation, which can be considered as an etiological factor in the development of the disease. The diagnosis was first suspected at a boarddermatovenerologists based on the clinical picture of the disease and subsequently verified by the data of a pathomorphological examination of the biopsy of the affected skin.The effectiveness of the use of aromatic retinoids in the treatment of generalized eruptive keratoacanthomas of Grzybowski is shown and the side effects that developed in the patient with an independent increase in the dose of acitretin to 70 mg/day are given. The article states the extremely rare occurrence of this disease, as evidenced by the above clinical case, diagnosed for the first time in more than 90 years of the institute's existence. The importance of consolidating the clinical experience of several leading dermatovenerologists for the diagnostics of generalized eruptive keratoacanthomas of Grzybowski is emphasized.

Sign in / Sign up

Export Citation Format

Share Document