scholarly journals A new dinoflagellage cyst sequence biostratigraphic framework for the Miocene of the Baltimore Canyon Trough and adjacent Salisbury Embayment

1992 ◽  
Vol 6 ◽  
pp. 299-299
Author(s):  
Laurent De Verteuil ◽  
Geoffrey Norris
Keyword(s):  
Field Studies ◽  
Third Order ◽  
Depositional History ◽  
Margin Setting ◽  
Independent Test ◽  
History Of ◽  
Age Model ◽  
Using Data ◽  
Stratigraphic Sequences

Over the past two decades, extensive seismic mapping of the Baltimore Canyon Trough off New Jersey, Delaware and Virginia, has documented a succession of progradational Miocene stratigraphic sequences. Understanding the depositional timing of these sequences is critical in evaluating the role of eustasy in their development, but has until now been hampered by the lack of suitably high resolution biostratigraphic data. Attempts to produce an integrated Neogene basin history have previously been frustrated by an inability to directly correlate individual shelf-based seismic sequences, with regionally mapped onshore, unconformity-bound, stratigraphic units. This study addresses both problems using data comprising the stratigraphic distribution of dinoflagellate cysts in two composited outcrop and ten subsurface sections from the Salisbury Embayment and adjacent Baltimore Canyon Trough. The result is a detailed age model for the entire Miocene depositional history of the area. Onshore samples are from the type sections of the Chesapeake Group in Maryland and Virginia. Offshore COST B-2 & B-3, Exxon 684 & 902 and Mobil 500 wells are directly tied to the regional seismic grid.According to our model, the magnitude and timing of mapped sequences in the Baltimore Canyon Trough compare well with Miocene third order cycles of the Exxon Cycle Chart. With the exception of the 22 Ma sequence (Cycle 1.5 of Haq et al., 1988), all of the other postulated eustatically controlled sequences are potentially present in the study area. In addition, on the basis of seismic mapping and integrated biostratigraphy, our model predicts one additional lower Serravalian sequence between 15.5 Ma and 13.8 Ma, and two additional lower Tortonian sequences between 10.5 Ma and 8.2 Ma. The onshore expression of these sequences are, respectively, the Calvert Beach Member of the Calvert Formation and parts of the Little Cove Point Beds of the Saint Marys Formation. An important implication of the age model is that the entire Fairhaven Member and “beds 4-9” of the Plum Point Marl Member, of the Calvert Formation, are lower Miocene strata.These dinocyst data were not available when the Exxon model of Miocene eustatic cycles was developed and therefore represent a critical independent test of that model. This is particularly so because the tectonically quiescent, mature, divergent-margin setting of the basin limits the role of causative variables other than eustasy, in the development and architecture of third order depositional sequences. Our model should be further tested by detailed sedimentological and taphonomic field studies of the Chesapeake Group.

Rb/Sr geochronology in the Thompson belt, Manitoba: implications for Aphebian crustal development and metallogenesis

1981 ◽  
Vol 18 (5) ◽  
pp. 932-943 ◽  
Author(s):  
C. Brooks ◽  
P. Theyer
Keyword(s):  
Broad Band ◽  
Early Period ◽  
Growth Trajectories ◽  
Isotopic Data ◽  
Depositional History ◽  
Sedimentary Sequences ◽  
Thompson Groups ◽  
Facies Metamorphism ◽  
History Of

The supracrustal metasediments of the Thompson belt (Pipe and Thompson Groups) show pronounced differences in Rb/Sr age (1855–1685 and 1665–1575 Ma, respectively) and initial Sr ratio (0.7096–0.7166 and 0.7203–0.7233). However, they have similar Rb/Sr ratios (0.8–1.2), and the age and isotopic differences are attributed to differing degrees of postdepositional, metamorphic reworking. The Sr-growth trajectories of these metasediments define a broad band on the evolution diagram and indicate a probable (maximum?) age of deposition of ca. 2.0 ± 0.1 Ga. Furthermore, the role of Archean detritus in the depositional history of these sediments is quite limited, based on isotopic data for the basement gneisses and adjoining granulites of the Pikwitonei region.Comparison of these data with those for metagraywackes of the adjacent Kisseynew gneisses (average [Formula: see text]) indicates that there were fundamental differences between the marine environments within which the two Aphebian sedimentary sequences were deposited. The high Rb/Sr in the Thompson belt metasediments is interpreted to reflect a relatively "long" equilibration of authigenic clays with circulating seawater (open ocean?) whereas the lower Rb/Sr of the Kisseynew metasediments reflects rapid sedimentation in an eugeosynclinal environment dominated by juvenile Aphebian material.Combined K/Ar and Rb/Sr ages suggest that the metamorphic reworking of the Thompson belt metasediments had three phases, an early period of folding ([Formula: see text]), followed by cross-folding and amphibolite facies metamorphism corresponding to the main pulse of the Hudsonian Orogeny ([Formula: see text]), and finally, late-stage shearing, faulting, and retrograde metamorphism (1625–1550 Ma). Mafic to ultramafic magmatism and associated nickel mineralization are confined to the interval between the deposition of the Thompson belt supracrustals and the first phase of Hudsonian deformation (i.e., ca. 2.1–1.8 Ga).

scholarly journals MUSEUM ETHNOGRAPHY IN THE CONTEXT OF ETHNOGRAPHIC FINNO-UGRIC STUDIES IN THE USSR (1920s-1930s)

2021 ◽  
Vol 15 (4) ◽  
pp. 715-721
Author(s):  
Aleksei Egorovich Zagrebin ◽  
Valerii Engelsovich Sharapov
Keyword(s):  
Nation Building ◽  
Museum Studies ◽  
Field Studies ◽  
Local History ◽  
Visual Images ◽  
Educational Work ◽  
The Family ◽  
National Movements ◽  
History Of

This paper offers a discussion of the role of ethnographic Finno-Ugric studies in Soviet nation building. In particular, it is concerned with the issue of representation of ethnicity/ethnic identity in various fields of museum studies: expeditions, local history, educational work, and exhibition activities. Special attention is paid to the field studies of Moscow and Leningrad ethnographers who participated in the formation of collections of regional museums of local lore and the construction of “authentic” visual images of Finno-Ugric peoples in the Soviet ethnographic portrait of the “family of peoples of the USSR”. One of the key questions is how the ethnographic reality and the transformative perspective of Soviet nation building correlated in the expedition practice. The role of the institute of museums in national movements is emphasized in recent studies of the history of Russian ethnography and the implementation of various ethnographic projects. In the authors’ opinion, ethnographers who conducted expert and scientific research, acted as intermediaries in the dialogue/conflict between local communities and authorities in building a regional national discourse.

THE EASTERN OTWAY BASIN WANGERRIP GROUP REVISITED USING AN INTEGRATED SEQUENCE STRATIGRAPHIC METHODOLOGY

1995 ◽  
Vol 35 (1) ◽  
pp. 372 ◽  
Author(s):  
P. A. Arditto
Keyword(s):  
Seismic Data ◽  
Well Log ◽  
Third Order ◽  
Traditional Methods ◽  
Depositional History ◽  
Sequence Stratigraphic ◽  
Reflection Seismic ◽  
Stratigraphic Subdivision ◽  
History Of ◽  
Definition Of

Recent exploration by BHP Petroleum in VIC/ P30 and VIC/P31, within the eastern Otway Basin, has contributed significantly to our understanding of the depositional history of the Paleocene to Eocene siliciclastic Wangerrip Group. The original lithostratigraphic definition of this group was based on outcrop description and subsequently applied to onshore and, more recently, offshore wells significantly basinward of the type sections. This resulted in confusing individual well lithostratigraphies which hampered traditional methods of subsurface correlation.A re-evaluation of the Wangerrip Group stratigraphy is presented based on the integration of outcrop, wireline well log, palynological and reflection seismic data. The Wangerrip Group can be divided into two distinct units based on seismic and well log character. A lower Paleocene succession rests conformably on the underlying Maastrichtian and older Sherbrook Group, and is separated from an overlying Late Paleocene to Eocene succession by a significant regional unconformity. This upper unit displays a highly progradational seismic character and is named here as the Wangerrip Megasequence.Regional seismic and well log correlation diagrams are used to illustrate a subdivision of the Wangerrip Megasequence into eight third-order sequences. This sequence stratigraphic subdivision of the Wangerrip Group is then used to construct a chronostratigraphic chart for the succession within this part of the Otway Basin.

Calendar bypass rites of Burgenland’s Croats in Hungary: history and reproduction

2020 ◽  
Vol 2019 (2 (11)) ◽  
pp. 250-267
Author(s):  
Anna A. Plotnikova ◽  
Keyword(s):  
Foreign Language ◽  
Mutual Influence ◽  
Field Studies ◽  
Foreign Culture ◽  
Biblical History ◽  
History Of ◽  
Other World ◽  
The Village ◽  
The Town

The article deals with the calendar bypass rites of the Burgenland Croats of South-Western Hungary in the vicinity of the town of Szombathei and is based on ethnolinguistic field studies conducted in 2019. Special attention is paid to the processes of the interaction between and mutual influence of the coexisting Croatian and Hungarian languages, folklore, and ethnographic traditions. The role of the folk language used is shown, which is in some cases reproduced when recreating the ritual Christmas circumambulation. The researcher focuses on the history of the revival of the “shepherds” Christmas rite in the village of Narda and its surrounding villages - Felsőcsatár and Horvátlővő. Reconstruction of the elements of the Christmas “shepherds” showed that the persons taking part in the ritual who visit the houses in the village as “shepherds” act as “wonderful guests”. They are connecting the spheres of both “their own” and “alien” worlds, and become the object of sacralisation as representatives of some other world, who bring prosperity, success, and good luck to the owners of the house. At present, this archaic aspect of the circumambulation (which is reflected in the attributes of the maskers and the motifs of their songs) is preserved as a symbol, sign, or characteristic feature of the winter rite itself (the shepherd’s performance). The masks representing the characters of biblical history are characteristic (shepherds, angels), which fits into the broader context of the later Slavic tradition. The example of the Christmas rite of “shepherds” shows the linguistic and folklore polyglossia that is typical for this region, where Burgenland’s Croats live in a foreign-language and foreign-culture environment.

Russian Sources of the Qur’anic Ethnography II. Alexander A. Adamov and His “Arabic Iraq”

2021 ◽  
Vol 27 (1) ◽  
pp. 45-60
Author(s):  
Anna Kudriavtceva ◽  
◽  
Efim Rezvan ◽  
Maryam Rezvan ◽  
◽  
...  
Keyword(s):  
18Th Century ◽  
Field Studies ◽  
Climatic Conditions ◽  
Economic Activities ◽  
Gulf Region ◽  
The First World War ◽  
History Of ◽  
Tangible Culture ◽  
First World

The scholarly and documentary heritage, the museum collections associated with the name of Alexander A. Adamov (1870—1938), one of the leading Russian diplomats and practicing orientalists at the eve of the First World War, are undoubtedly an important source for studying the history of the Middle East at the turn of the 19th and 20th centuries, the history of the rivalry of the great powers in the region. Today, however, the significance of Adamov's texts and collections takes on yet another dimension. It is Qur’anic ethnography, a new scientific field, based on the results of specialized studies of previous years, and it is closely related to the studies of the Qur’anic language and the language milieu of Arabia at the time of the Prophet, to the ethnographical field studies in Arabia and Qur’anic archaeology. Researchers of Arabia are very well familiar with the phenomenon of the long preservation of elements of traditional tangible culture and economic activities here. This phenomenon is mostly based on the specific natural and climatic conditions, which brought about a set of elements of tangible culture that have proved to be highly viable throughout many centuries. In this connection, we regard the itineraries and works of European travellers to Arabia in the second half of the 18th century — first third of the 20th century as a serious source for our research. Whereas the names and papers of the Western travellers are well known and have been often referred to in various research projects devoted to Arabia, similar Russian works are still waiting for their turn. The second article of the series is dedicated to the activities of a man who devoted a significant part of his life to the study of Iraq and the Gulf region, the areas that played a huge role in the complex and largely ambiguous processes that led to the emergence of Islam. Accurate historical and ethnographic observations of Adamov make it possible to obtain material that is important for the reconstruction of territorial units and types of settlements, types of clothing and dwellings, the specifics of water supply and irrigation methods, agriculture and horticulture, the role of different types of animals in economic circulation, and nutritional systems typical for Arabia in the time of the rise of Islam.

Assessing the role of abundance in marine bivalve extinction over the post-Paleozoic

Paleobiology ◽  
2009 ◽  
Vol 35 (4) ◽  
pp. 631-647 ◽  
Author(s):  
Carl Simpson ◽  
Paul G. Harnik
Keyword(s):  
Strong Support ◽  
Marine Bivalve ◽  
Nonlinear Relationship ◽  
Geologic Time ◽  
Extinction Rates ◽  
Marine Bivalves ◽  
History Of ◽  
Using Data ◽  
Shaped Pattern

Abundance is one of the primary factors believed to influence extinction yet little is known about its relationship to extinction rates over geologic time. Using data from the Paleobiology Database we show that abundance was an important factor in the extinction dynamics of marine bivalve genera over the post-Paleozoic. Contrary to expectations, our analyses reveal a nonlinear relationship between abundance and extinction rates, with rare and abundant genera exhibiting rates elevated over those of genera of moderate abundance. This U-shaped pattern is a persistent feature of the post-Paleozoic history of marine bivalves and provides one possible explanation for why we find strong support for heterogeneous extinction rates among genera grouped by similarity in abundance yet effectively no net relationship among these rates when using models of directional selection on abundance.

scholarly journals Police Role In The Effort Management And Control The Fight Between Youth In Making Public Order In The Blora Regency

2020 ◽  
Vol 3 (1) ◽  
pp. 81
Author(s):  
Zaenul Arifin ◽  
Sukarmi Sukarmi
Keyword(s):  
Secondary Data ◽  
Field Studies ◽  
Criminal Code ◽  
Third Party ◽  
Primary Data ◽  
Public Order ◽  
The Public ◽  
Treatment And Prevention ◽  
Using Data

Group fights criminal acts defined as crimes of violence together as provided for in Article 170 of the Criminal Code. Data from Blora Regency police indicate that a fight between youth always the case in every year in the Blora Regency. This study aims to determine the role of the police in handling and overcoming a fight between youth, barriers and solutions in realizing the public order in Blora. The method used is the juridical sociological, descriptive analytical research specifications. The data used are primary data and secondary data, while the data collection method is field studies and literature. Using data analysis methods of qualitative analysis. The analysis used as knife crime prevention theory, theory and the theory of the role of law enforcement. The results showed that the role of the police in handling and overcoming a fight between youth in realizing the public order in Blora is through the efforts of non penal (preventive) and attempts penal (repressive). Barriers arising in the treatment and prevention of fights between youth to realize the public order in Blora is the number of police personnel limited, the police difficult to present witnesses so that not all the perpetrators can be arrested, the third party to interfere in the settlement of the problem, and the lack of awareness Public.Keywords: Role; National Police; Prevention; Fights Between Youth.

scholarly journals Precambrian geological history of the Dnipro Rapids

2018 ◽  
Vol 26 (1) ◽  
pp. 121-134
Author(s):  
Volodymyr V. Manyuk
Keyword(s):  
Field Studies ◽  
Natural Phenomenon ◽  
Geological History ◽  
Geological Processes ◽  
History Of ◽  
Chronological Sequence ◽  
To Come ◽  
Conservation Organizations ◽  
First Time

This article provides a concise description of chronological sequence of Rapids in the Dnipro within the area between the cities Dnipro and Zaporizhia, their role in the maritime transport of the Dnipro, and the relationship between humans and the river during a number of historical epochs; it presents the role of the Dnipro Rapids, also known as the Porohy of the Dnipro, as unique natural formations in the great River Dnipro, which flows through three countries and cuts through the Ukraininan Crystalline Shield. The article analyzes the sequence of measures taken by the supporters of conservation of nature along the Dnipro Rapids area, representatives of nature-conservation organizations and all people interested in Dnipro Rapids and conservation of its unique natural heritage - beginning with founding “Dniprovski Porohy” National Geological Reserve in Zaporizhia Oblast in 1974 to organizing “Dniprovi Porohy” Regional Landscape Park on the territory between Stari Kodaky village and the border of Zaporizhia Oblast. This paper highlights the diversity of geological processes which have taken place over a long and dynamic geological history, described in the stone chronicle or rocks and minerals, and which formed the Dnipro Rapids, an object of interest of many generations to come. This article emphasizes the fact that the geological component of a valuable natural phenomenon was described for the first time only in the results of particular studies by Valerian Domger, who conducted his research for the building of Katerynynska Railway upon instructions from the Geological Committee from 1881 to 1884. The pegmatite, diabase, granite, syenite with peculiarities of their mineral composition, elements of bedding, described by V Domger for the Nenasytetsky and Lohanivsky and other Rapids and islands, were not the only phenomena which have disappeared beneath the Dnipro waters forever. The small quarries, where the young geologist described the Sarmatian limestones, left no signs of their existence and not a single outcrop of the limestone survived. Therefore, the routes of V O Domger, the discoverer of the Nikopol manganese deposits, Tomakivska fauna of the Mediterranean type and Mandrykivska fauna, one of the best preserved in the world, are of great historical value. Likewise, his field studies have still not lost their scientific significance. This paper succinctly describes the geological history of the area of the Dnipro Rapids and the oldest crystalline rocks of the Aul series and non-stratified formations of the Dnipropetrovsk and other natural complexes, involved in the formation of certain rapids.

Polyvictimization and Recurrent Falling in Older Ecuadorian Adults: The Mediation Role of Depressive Symptoms

2020 ◽  
pp. 089826432095291
Author(s):  
Carlos A. Reyes-Ortiz ◽  
Mario U. Perez-Zepeda ◽  
José M. Ocampo-Chaparro ◽  
Adalberto Campo-Arias ◽  
Miguel G. Borda ◽  
...  
Keyword(s):  
Depressive Symptoms ◽  
Odds Ratio ◽  
Well Being ◽  
Community Dwelling ◽  
Mediating Effect ◽  
Mediation Analyses ◽  
History Of ◽  
Using Data ◽  
Significant Mediator

Objective: To assess depressive symptoms as a mediator in the association between polyvictimization and recurrent falling. Methods: Using data from the Salud, Bienestar y Envejecimiento (Health, Well-being, and Aging) Ecuador Study, we analyzed community-dwelling adults 60 years and older ( n = 5227). Recurrent falling was determined as ≥2 falls during the prior 12 months. Polyvictimization was determined as a history of ≥2 types of abuse. The mediator was depressive symptoms. Mediation analyses were based on the VanderWeele method. Results: Polyvictimization was significantly associated with higher odds of recurrent falling, and odds ratio (OR) = 1.45 (95% confidence intervals [CI] 1.20–1.76). Higher depressive symptoms increase the odds for recurrent falling (OR = 1.09 and 95% CI 1.07–1.11). Moreover, depressive symptoms were a significant mediator between polyvictimization and recurrent falling. The mediating effect was 28.4%. Discussion: Polyvictimization was associated with higher odds of recurrent falling, and this association was mediated by depressive symptoms.

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