scholarly journals TECTONIC STRUCTURE OF KERCH-TAMAN FOLD ZONE OF AZOV-KUBAN TROUGH

2021 ◽  
pp. 64-83
Author(s):  
O.V. Gaydalenok ◽  
◽  
S.A. Sokolov ◽  
N.A. Gordeev ◽  
◽  
...  
Keyword(s):  
Middle Miocene ◽  
Structural Features ◽  
Main Phase ◽  
Tectonic Structure ◽  
Crimean Mountains ◽  
Northwestern Caucasus ◽  
Mud Volcanism ◽  
History Of ◽  
Transverse Fault

The nrotectonic structure of the Kerch-Taman folded zone, the southern deformed part of the Azov-Kuban piedmont trough, has a number of structural features and a history of deformation development. The authors divide the zone into five transverse segments, differing in the age of the main phase of folding. In the central Taman segment, folding is still going on, while in the framing segments, the main phases of folding took place in the Pliocene. In the peripheral segments, the main phase of folding is older - Early-Middle Miocene. The boundaries of the Kerch-Taman zone, as well as its youngest, the Taman segment, coincide with the transverse fault (fault-flexure) zones. It is shown that the southern frame of the Kerch-Taman folded zone is the continuation of the structures of the Crimean Mountains and the Northwestern Caucasus. The correlation of mud volcanism manifestations with tectonic elements of the Taman segment is noted to be ambiguous.

scholarly journals Chromosome-level genome assembly and structural variant analysis of two laboratory yeast strains from the Peterhof Genetic Collection lineage

2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Yury A Barbitoff ◽  
Andrew G Matveenko ◽  
Anton B Matiiv ◽  
Evgeniia M Maksiutenko ◽  
Svetlana E Moskalenko ◽  
...  
Keyword(s):  
Chromosomal Rearrangements ◽  
Structural Features ◽  
Multiple Observations ◽  
Yeast Strains ◽  
Trace Back ◽  
Oxford Nanopore ◽  
Long Read ◽  
History Of ◽  
Variant Analysis ◽  
Yeast Genomes

Abstract Thousands of yeast genomes have been sequenced with both traditional and long-read technologies, and multiple observations about modes of genome evolution for both wild and laboratory strains have been drawn from these sequences. In our study, we applied Oxford Nanopore and Illumina technologies to assemble complete genomes of two widely used members of a distinct laboratory yeast lineage, the Peterhof Genetic Collection (PGC), and investigate the structural features of these genomes including transposable element content, copy number alterations, and structural rearrangements. We identified numerous notable structural differences between genomes of PGC strains and the reference S288C strain. We discovered a substantial enrichment of mid-length insertions and deletions within repetitive coding sequences, such as in the SCH9 gene or the NUP100 gene, with possible impact of these variants on protein amyloidogenicity. High contiguity of the final assemblies allowed us to trace back the history of reciprocal unbalanced translocations between chromosomes I, VIII, IX, XI, and XVI of the PGC strains. We show that formation of hybrid alleles of the FLO genes during such chromosomal rearrangements is likely responsible for the lack of invasive growth of yeast strains. Taken together, our results highlight important features of laboratory yeast strain evolution using the power of long-read sequencing.

scholarly journals Multilocus phylogeny and historical biogeography of Hypostomus shed light on the processes of fish diversification in La Plata Basin

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yamila P. Cardoso ◽  
Luiz Jardim de Queiroz ◽  
Ilham A. Bahechar ◽  
Paula E. Posadas ◽  
Juan I. Montoya-Burgos
Keyword(s):  
Middle Miocene ◽  
Drainage Pattern ◽  
Ecological Diversification ◽  
La Plata ◽  
La Plata Basin ◽  
History Of ◽  
Dispersal Corridors ◽  
Shed Light ◽  
Strong Barrier ◽  
Multilocus Phylogeny

AbstractDistribution history of the widespread Neotropical genus Hypostomus was studied to shed light on the processes that shaped species diversity. We inferred a calibrated phylogeny, ancestral habitat preference, ancestral areas distribution, and the history of dispersal and vicariance events of this genus. The phylogenetic and distribution analyses indicate that Hypostomus species inhabiting La Plata Basin do not form a monophyletic clade, suggesting that several unrelated ancestral species colonized this basin in the Miocene. Dispersal to other rivers of La Plata Basin started about 8 Mya, followed by habitat shifts and an increased rate of cladogenesis. Amazonian Hypostomus species colonized La Plata Basin several times in the Middle Miocene, probably via the Upper Paraná and the Paraguay rivers that acted as dispersal corridors. During the Miocene, La Plata Basin experienced marine incursions, and geomorphological and climatic changes that reconfigured its drainage pattern, driving dispersal and diversification of Hypostomus. The Miocene marine incursion was a strong barrier and its retraction triggered Hypostomus dispersal, increased speciation rate and ecological diversification. The timing of hydrogeological changes in La Plata Basin coincides well with Hypostomus cladogenetic events, indicating that the history of this basin has acted on the diversification of its biota.

Fingierte Mündlichkeit – inszenierte Interaktion. Die Novelle als Erzählmodell

2008 ◽  
Vol 36 (3) ◽  
Author(s):  
Christine Lubkoll
Keyword(s):  
Structural Features ◽  
Scientific Discourse ◽  
Cultural Relevance ◽  
Historical Change ◽  
Short Novel ◽  
History Of

AbstractThe reflection of the genre of the “Novelle” (short novel) offers one way for a productive interpenetration of scientific literary and linguistic discussions about the phenomenon of textuality. It is the genre of the “Novelle” whose characterization has always been very dissatisfying according to traditional genre definitions within the scientific discourse. Typical formal and structural features are often too unspecific and mostly remain on the surface, if their function for the (con)text is not reflected adequately. Furthermore all the different catalogues of typical features mostly appear as static schemes that cannot do justice equally well to all the various manifestations of the “Novelle” as to the historical change of the genre itself.Due to these facts the article by Christine Lubkoll tries to define the genre of the “Novelle” and its specific textual manifestations with regard to its historically changing contextual conditions. The thesis of the article is that theThe first part of the article by Christine Lubkoll illustrates the history of the genre of the “Novelle” and its specific social and cultural relevance within different literary époques. It is then followed by the second part, an analysis of Goethes “Unterhaltungen deutscher Ausgewanderten” and Musils “Die Amsel”.

scholarly journals On the floral mechanism of Welwitschia mirabilis , hooker

1914 ◽  
Vol 87 (596) ◽  
pp. 354-355
Keyword(s):  
Previous History ◽  
Structural Features ◽  
Stages Of Development ◽  
Points Of Interest ◽  
History Of ◽  
Welwitschia Mirabilis ◽  
Floral Form

1. In the preparation of sectional schemes for the flowers of Welwitschia mirabilis , in different stages of development, several points of interest were noted as tending to throw light on the previous history of this unique floral form. 2. Evidence is adduced to show that the primary structural features of the flowers are referable to an anthostrobiloid condition closely comparable with that of Cycadeoidea , now expressed in a phase of minimum reduction, and to be regarded as an example of heterophyletic convergence to a simple floral construction in the gymnospermic condition.

scholarly journals Crevasse splays within a lignite seam at the Tomisławice opencast mine near Konin, central Poland: architecture, sedimentology and depositional model

Geologos ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 25-37 ◽  
Author(s):  
Lilianna Chomiak
Keyword(s):  
Middle Miocene ◽  
Structural Features ◽  
Fine Grained ◽  
Opencast Mine ◽  
Main River ◽  
Main River Channel ◽  
Lignite Mine ◽  
Flooding Event ◽  
Crevasse Splay ◽  
Sandy Sediments

AbstractThe present article focuses predominantly on sandy deposits that occur within the Middle Miocene lignite seam at the Tomisławice opencast mine, owned by the Konin Lignite Mine. As a result of mining activity, these siliciclastics were available for direct observation in 2015–2016. They are situated between two lignite benches over a distance of ~500 m in the lower part and ~200 m in the higher part of the exploitation levels. The maximum thickness of these sandy sediments, of a lenticular structure in a S–N cross section, is up to 1.8 m. With the exception of a thin lignite intercalation, these siliciclastics comprise mainly by fine-grained and well-sorted sands, and only their basal and top layers are enriched with silt particles and organic matter. Based on a detailed analysis of the sediments studied (i.e., their architecture and textural-structural features), I present a discussion of their genesis and then propose a model of their formation. These siliciclastics most likely formed during at least two flood events in the overbank area of a Middle Miocene meandering or anastomosing river. Following breaching of the natural river levee, the sandy particles (derived mainly from the main river channel and levees) were deposited on the mire (backswamp) surface in the form of crevasse splays. After each flooding event, vegetation developed on the top of these siliciclastics; hence, two crevasse-splay bodies (here referred to as the older and younger) came into existence. As a result, the first Mid-Polish lignite seam at the Tomisławice opencast mine is currently divided in two by relatively thick siliciclastics, which prevents a significant portion of this seam from being used for industrial purposes.

Structures megametriques et evolution de la mer Tyrrhenienne et des zones perityrrheniennes

1962 ◽  
Vol S7-IV (5) ◽  
pp. 760-773 ◽  
Author(s):  
Claude Grandjacquet
Keyword(s):  
Large Scale ◽  
Middle Miocene ◽  
Southern Italy ◽  
Western Mediterranean ◽  
Tyrrhenian Sea ◽  
African Continent ◽  
Lower Eocene ◽  
Structural History ◽  
History Of

Abstract A large view of the evolution and structural history of the Tyrrhenian sea and bordering areas suggests that towards the end of the Permian distensions occurring in the western Mediterranean resulted in the opening of a passage to the Atlantic. Lower Eocene deformations along the Sicilian-Tunisian front were either due to local marginal disequilibrium or to the northern drift of the African continent. Oligocene emergence is evident in the Apennines and in Calabria through the existence of widespread hiatuses and by bauxitic and ferruginous beds. Large scale Oligocene movements brought the African continent to its maximum proximity with Europe. It was in the same period that the clay scaglia and flysch nappes began sliding in Tuscany although the movement of Calabrian nappes in southern Italy did not occur until the lower and middle Miocene.

scholarly journals Levels of Reality

Languages ◽  
2019 ◽  
Vol 4 (2) ◽  
pp. 22 ◽  
Author(s):  
Ronald W. Langacker
Keyword(s):  
Structural Features ◽  
Epistemic Status ◽  
Clause Structure ◽  
Matrix Clause ◽  
Linguistic Structure ◽  
The Matrix ◽  
The Status ◽  
History Of ◽  
Levels Of Reality

Two fundamental aspects of conceptual and linguistic structure are examined in relation to one another: organization into strata, each a baseline giving rise to the next by elaboration; and the conceptions of reality implicated at successive levels of English clause structure. A clause profiles an occurrence (event or state) and grounds it by assessing its epistemic status (location vis-à-vis reality). Three levels are distinguished in which different notions of reality correlate with particular structural features. In baseline clauses, grounded by “tense,” the profiled occurrence belongs to baseline reality (the established history of occurrences). Basic clauses incorporate perspective (passive, progressive, and perfect), and since grounding includes the grammaticized modals, as well as negation, basic reality is more elaborate. A basic clause expresses a proposition, comprising the grounded structure and the epistemic status specified by basic grounding. At higher strata, propositions are themselves subject to epistemic assessment, in which conceptualizers negotiate their validity; propositions accepted as valid constitute propositional reality. Propositions are assessed through interactive grounding, in the form of questioning and polarity focusing, and by complementation, in which the matrix clause indicates the status of the complement.

Early and middle Miocene depositional history of the Maracaibo Basin, western Venezuela

AAPG Bulletin ◽  
2006 ◽  
Vol 90 (4) ◽  
pp. 625-655 ◽  
Author(s):  
José I. Guzmán ◽  
William L. Fisher
Keyword(s):  
Middle Miocene ◽  
Depositional History ◽  
Maracaibo Basin ◽  
History Of

scholarly journals On <i>Pseudotaberina malabarica</i> (Carter) <i>(Foraminiferida)</i>

1989 ◽  
Vol 8 (1) ◽  
pp. 113-129 ◽  
Author(s):  
F. T. Banner ◽  
J. Highton
Keyword(s):  
Type Species ◽  
Middle Miocene ◽  
Carbonate Sediments ◽  
Inner Shelf ◽  
History Of

Abstract. Pseudotaberina Eames, 1971, has as its (originally designated) type species Orbitolites malabarica Carter, 1853. The taxonomic and nomenclatural history of P. malabarica is given, and the diagnoses of both the genus and the species are corrected and emended, following re-examination of the type and other relevant specimens. A lectotype is selected and, with syntypes, strict topotypes and other specimens, is used for redescription of the species. P. malabarica is believed to characterise Early to Middle Miocene marine, inner shelf carbonate sediments of Tethys.

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