scholarly journals Geological history of the Dnipro Rapids from Paleogene to Holocene

2019 ◽  
Vol 28 (1) ◽  
pp. 114-132
Author(s):  
Volodymyr Manyuk
Keyword(s):  
Sedimentary Rocks ◽  
Large River ◽  
Geological Structure ◽  
Geological History ◽  
Ancient History ◽  
Ancient Greek ◽  
Quaternary Deposits ◽  
Genetic Types ◽  
History Of ◽  
Regional Landscape

During its long history, the rapids section of the large river the Dnipro not only posed a problem for navigation, but also attracted people with its picturesque rocky landscapes unusual for the Steppe Prydniprovie. Nobody who had saw their beauty was left indifferent. History has preserved lots of recorded impressions from various visits to the Rapids from the Ancient Greek philosphers to exceptional works of Dmitro Yavornytsky. However, the geological studies were fragmented and there is no integrated source focussing on the geological structure of the Dnipro Rapids. We analyzed the results of the explorations of Valerian Domger, a famous researcher of the geology of Middle Prydniprovie.His routes investigated almost every corner of the then Katerynoslav governorate. After the creation of the Prydriprovie Regional Landscape Park (PRLP) in 2008 within the territory of part of the Dnipro Rapids, a question of restoration of its geological history should have emerged, but that has not happened. The year 2017 became the year of rebirth of the PRLP andrecognition of geological component as the key feature of its restoration. The Pre-Cambrian stage of the geological history of the Naddniprovia Rapids is described in the author`s publication in early 2018, which focused on the most ancient history of the Rapids. The Phanerozoic Eon is analyzed in this work and focuses on the lithogical-facial peculiarities of the sedimentary rocks from Paleogene to Quaternary rocks on the basis of stratigraphic and paleontological data, according to which they have beendivided in detail. We determined the patterns in the structure of Quaternary deposits, the correlation of subaerial and subaquaticformations of different genetic types was made according to the use of the climatic-stratigraphic or paleoclimatic principle of division. Thepossibilities of creating a geological park on the basis of the“Dnipro Rapids” Regional Landscape Park ( "Dniprovi Porohy' RLP) areexplored and substantiated.

Therapy of the word and other psychotherapeutic approaches in Ancient Greek medicine

2019 ◽  
Vol 57 (6) ◽  
pp. 741-752
Author(s):  
Chiara Thumiger
Keyword(s):  
Physiological State ◽  
Fifth Century ◽  
Late Antique ◽  
Ancient History ◽  
Ancient Greek ◽  
Ancient Medicine ◽  
Pharmaceutical Substances ◽  
History Of ◽  
Ancient Greek Medicine ◽  
Systematic Knowledge

One of the most distinctive aspects of contemporary psychiatry is its firm grounding in a neurological and biochemical framework for the interpretation of mental life and its disturbances. In the absence of any strong neurological understanding or systematic knowledge of active pharmaceutical substances, one might expect that early ancient medicine readily resorted to non-somatic approaches to healing mental suffering. Instead, what is usually labelled “therapy of the word” and other forms of what one may call psychotherapy emerge relatively late in Greek medicine, only in the first centuries of our era. This paper provides an overview and analysis of this development in ancient history of psychology, philosophy and medicine, covering a broad period of time from the fifth century BCE to the end of the late-antique period, the fifth century CE. The focus is on the very idea (or lack thereof) of the curability of mental disturbance, and on the particular branch of therapeutics which addresses the psychological and existential condition of the patient, rather than his or her physiological state.

U–Pb geochronology of the Moyie sills, Purcell Supergroup, southeastern British Columbia: implications for the Mesoproterozoic geological history of the Purcell (Belt) basin

1995 ◽  
Vol 32 (8) ◽  
pp. 1180-1193 ◽  
Author(s):  
H. Elizabeth Anderson ◽  
Donald W. Davis
Keyword(s):  
United States ◽  
Tectonic Setting ◽  
Sedimentary Rocks ◽  
The United States ◽  
The Other ◽  
Soft Sediment ◽  
Geological History ◽  
Sedimentary Sequence ◽  
Belt Supergroup ◽  
History Of

The Mesoproterozoic Purcell Supergroup (and its equivalent in the United States, the Belt Supergroup) is a thick sedimentary sequence formed in an extensional basin of uncertain age and tectonic setting. The voluminous tholeiitic Moyie sills intrude turbidites of the lower and middle Aldridge Formation, the lowest division of the Purcell Supergroup. Many of the sills were intruded into soft sediment and one intrudes the Sullivan sedimentary exhalative (SEDEX) orebody, so their age approximates that of the sediments and the Sullivan deposit. New U–Pb dates of zircon from four sills are older than previously published U–Pb zircon ages. One sill contained concordant zircons with an age of 1468 ± 2 Ma. Near concordant zircons from the other samples have similar 207Pb/206Pb ages, indicating that all of the sills crystallized at the same time. U–Pb dates of titanites from two of these sills yielded concordant dates ranging from 1090 to 1030 Ma, indicating that they have undergone a previously unrecognized Grenville-age metamorphism. The U–Pb systematics of abraded zircons from one sill indicate that they have also been affected by this event. The recognition of Grenville-age metamorphism in the Purcell (Belt) basin suggests that the prevalent 1.0–1.1 Ga Rb–Sr and K–Ar mineral and whole-rock dates from a wide variety of Purcell (Belt) igneous and sedimentary rocks are also metamorphic, and are not ages of sedimentation or "hybrid" dates reflecting partial resetting by the ca. 760 Ma Goat River orogeny. On this basis, all sedimentation in the Purcell (Belt) basin is constrained to be older than 1.1 Ga and is probably older than 1.25 Ga.

HYDROCARBON INCLUSIONS IN CEMENTS OF SEDIMENTARY ROCKS AND IN VEIN MINERALS – CHARACTERISTICS AND SIGNIFICANCE

2016 ◽  
pp. 87-102 ◽  
Author(s):  
Katarzyna JARMOŁOWICZ-SZULC
Keyword(s):  
Ultraviolet Light ◽  
Fluid Inclusions ◽  
Sedimentary Rocks ◽  
Geological History ◽  
History Of ◽  
Homogenization Temperatures ◽  
Two Phases

Characteristics and results of microthermometric studies of fluid inclusions which occur in the cements of sedimentary rocks of various ages (from Cambrian through Permian to Paleogene) and filled with hydrocarbons (HCFI) are presented. The inclusions are primary and secondary in origin. They display one or two phases and fluorescence in white-blue (oil) or dull blue (methane) colours, sometimes yellow or red. Based on the fluorescence colour in the ultraviolet light a character of hydrocarbons that fill these inclusions and migrate in the rocks of the region can be estimated. The inclusions are filled with palaeofluids of different compositions. The homogenization temperatures, which correspond to the minimum estimation of the trapping temperatures in minerals, show variability with respect to the geological history of the study area. The hydrocarbon inclusions are often accompanied by brine inclusions. Wider interpretation of all microthermometric analyses was enabled due to the combination of studies on hydrocarbon and aqueous inclusions. The presence of hydrocarbons in inclusions is a proof of their occurrence and/or migration in the rocks of the regions studied.

scholarly journals DISTRIBUTION OF QUATERNARY DEPOSITS IN THE UDMURT REPUBLIC TERRITORY

2020 ◽  
Vol 30 (2) ◽  
pp. 175-189
Author(s):  
V.A. Obatnin ◽  
A.V. Sergeev
Keyword(s):  
Spatial Location ◽  
Geological Structure ◽  
Quaternary Deposits ◽  
Landscape Studies ◽  
Aeolian Deposits ◽  
Genetic Types ◽  
Aeolian Sediments ◽  
Udmurt Republic ◽  
The Republic ◽  
The Relationship

The article describes the main genetic types of Quaternary deposits in Udmurtia and explains their genesis and spatial location in accordance with modern scientific concepts. In particular, the relationship between geological structure of the territory and the distribution of eluvial, slope and aeolian deposits was revealed; the issue of the formation of fluvioglacial and limnoglacial formations on the territory of the republic was considered; patterns of formation of Aeolian massifs were indicated. A detailed regionalization of the aeolian material of Udmurtia was carried out with the allocation of three arrays divided into eight branches, as well as the explanation of the configuration of each of them. The differences between aeolian sediments on watersheds and other formations of this genetic type were identified and explained. The nuances of creating a digital map of the Quaternary sediments of the region based on existing maps and data obtained during the analysis were indicated, an assessment of the use of such a map for landscape studies was given.

Stratigraphic studies on Quaternary floodplain deposits of the Eastern Gefara Plain. S.P.L.A.J.

1983 ◽  
Vol 14 ◽  
pp. 16-38 ◽  
Author(s):  
J. M. Anketell ◽  
S. M. Ghellali
Keyword(s):  
Facies Analysis ◽  
Alluvial Fan ◽  
The Other ◽  
Geological History ◽  
Sedimentary Sequence ◽  
Quaternary Deposits ◽  
Aeolian Dunes ◽  
History Of ◽  
Firm Basis ◽  
Floodplain Deposits

AbstractThe Quaternary deposits of the Gefara Plain are comprised of three major facies – alluvial fan facies of sands and gravels which blankets the base of the Jebel Nafusa escarpment; floodplain facies of fluvial sands and silts with aeolian dunes which underlies most of the Gefara Plain and, aeolian coastal dune facies, predominantly calcarenitic, which is confined to a narrow coastal zone. Well exposed sections in the eastern part of the plain allow sub-division of the floodplain deposits into a number of mappable units defined and bounded by surfaces of stratigraphic discontinuity. The lithologies of these units are described and compared from selected type sections. The relationships between the units, their geometry, and the nature of the surfaces of stratigraphic discontinuity are discussed. It is proposed that, the lithostratigraphic sequence displayed by the Quaternary floodplain deposits of the eastern Gefara region provides a firm basis for correlation, not only with floodplain deposits in other parts of the plain but also with the other major facies developed in the area. In addition, the recognition of significant stratigraphic breaks in the sedimentary sequence combined with facies analysis lays a firm foundation for an interpretation of the geological history of the region.

scholarly journals Neotectonic structure and evolution of Lefkada island

2001 ◽  
Vol 34 (1) ◽  
pp. 157 ◽  
Author(s):  
Ε. Λ. ΛΕΚΚΑΣ ◽  
Γ. Δ. ΔΑΝΑΜΟΣ ◽  
Σ. Γ. ΛΟΖΙΟΣ
Keyword(s):  
Geological Structure ◽  
Geological History ◽  
Fault Systems ◽  
History Of ◽  
Lefkada Island ◽  
Fault Network

In this paper, the formations that participate in the geological structure of Lefkada island are described in detail, as well as two alpine tectonic phases that affected the island, together with the criteria for their evaluation. The tectonic fabric is then described and the mapped fault systems are analysed kinematically and geometrically through the time. The current geodynamic regime has found its expression on the island through a dense fault network that has overprinted the pre-existing thrust-related features and has been dominant throughout the Plioquaternary. The dense fault network has broken up the island in a multitude of independent fault blocks which are described; an attempt is also made to determine the relative movements among these fault-blocks. The recent geological history of Lefkada is characterized by basic periods of predominant compression, interrupted by brief extensional episodes, where gravitational movements are favoured.

scholarly journals VI.—On the Geological Structure of Ireland

1902 ◽  
Vol 9 (10) ◽  
pp. 456-458
Author(s):  
Greenville A. J. Cole
Keyword(s):  
Geological Structure ◽  
Geological History ◽  
The West ◽  
North East ◽  
South West ◽  
History Of

In this illustrated lecture, the more prominent phases of the geological history of Ireland were pointed out, mainly as an explanation of the existing scenic features of the country. Probably very little remains in Ireland of the old Huronian continent, unless portions of it have appeared again in the cores of Caledonian folds. The stratified, but metamorphosed, Dalradians of the west may be Cambrian, or older; and gneiss is included in the granite of eastern Tyrone, the latter being probably of Caledonian age. The gneiss of the ancient moorland between Omagh and Cookstown is, moreover, very possibly pre-Cambrian. The Silurian sea must have covered all the Irish area ; and the subsequent Caledonian folding, with its axes running north-east and south-west, marked out the first distinct lines of the existing country.

scholarly journals II.—The Structure and Later Geological History of New Zealand

1916 ◽  
Vol 3 (6) ◽  
pp. 243-249 ◽  
Author(s):  
C. A. Cotton
Keyword(s):  
New Zealand ◽  
Early Cretaceous ◽  
Late Jurassic ◽  
Sedimentary Rocks ◽  
Mountain Range ◽  
Geological History ◽  
History Of

As is well known, the skeleton or oldermass of New Zealand is largely composed of a mass of deformed sedimentary rocks, the precise ages of the members of which are in doubt but do not affect the problem under consideration. The most profound deformation of this vast sedimentary group took place in late Jurassic or early Cretaceous times during what may be termed the “Mesozoic orogenic period”, when probably a great mountain range came into existence.

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