scholarly journals Microstratigraphic Analysis of Fossil Distribution in the Lower Hornerstown and Upper Navesink Formations at the Edelman Fossil Park, NJ

2021 ◽  
Vol 9 ◽  
Author(s):  
Kristyn K. Voegele ◽  
Paul V. Ullmann ◽  
Tara Lonsdorf ◽  
Zachary Christman ◽  
Michael Heierbacher ◽  
...  

Maastrichtian–Danian sediments of the Navesink and Hornerstown formations at the Jean and Ric Edelman Fossil Park of Rowan University in Mantua Township, New Jersey, have long intrigued paleontologists. Within the basal Hornerstown Formation occurs the Main Fossiliferous Layer (MFL), a regionally well-known and diverse bonebed. The lithostratigraphic and chronostratigraphic position of this fossil layer have been debated for more than 50 years, fueling debate over its origin. Herein, we present the results of a microstratigraphic analysis of the fossil composition and distribution of the MFL undertaken to rectify these discrepancies. Through methodical top-down excavation, we recorded the three-dimensional position of every fossil encountered. Three-dimensional visualization and analyses of these data in ArcGIS Pro yielded an unprecedented view of this bonebed. Most reported discrepancies about the stratigraphic placement and thickness of the MFL can be explained by the presence of two distinct fossil assemblages within this interval that are occasionally combined into a single bonebed. The stratigraphically-lower assemblage, herein termed an “oyster layer”, is geometrically-tabular and exhibits low taxonomic diversity, high abundance of the oyster Pycnodonte, and moderate taxonomic richness. The stratigraphically-higher assemblage, the MFL, occurs approximately 9 cm higher in section and exhibits high values of taxonomic diversity, fossil abundance, and taxonomic richness. Sedimentological homogeneity throughout this interval suggests that these faunal contrasts arise from the two assemblages having formed via independent taphonomic pathways. Specifically, prevalence of Pycnodonte in the oyster layer implies formation by a selective mortality event, whereas the diversity of the MFL appears to reflect a more universal agent of mortality. Spatial variations in the stratigraphic distribution of fossils within the MFL in our excavation area indicate this assemblage does not form a simple, tabular layer as previously thought and may, in part, record original bathymetry. Importantly, our definition of the MFL and detailed characterization of its stratigraphic placement are essential for future studies on the taphonomic origin and chronostratigraphy of this bonebed. Universal use of this definition would allow researchers to confidently elucidate the exact lithostratigraphic positions of precise chronostratigraphic indicators within the MFL and accurately estimate the degree of time averaging of its fossils.

1996 ◽  
Vol 18 (6) ◽  
pp. 273-284 ◽  
Author(s):  
M.G. ORTEGA-PIERRES ◽  
L. YEPEZ-MULIA ◽  
W. HOMAN ◽  
H.R .GAMBLE ◽  
P.L. LIM ◽  
...  

2017 ◽  
Vol 63 (11) ◽  
pp. 957-961 ◽  
Author(s):  
Marco Antonio F. Carneiro ◽  
Beatriz da C. A. Alves ◽  
Flávia de Sousa Gehrke ◽  
José Nuno Domingues ◽  
Nelson Sá ◽  
...  

Summary Introduction: Global climate changes directly affect the natural environment and contribute to an increase in the transmission of diseases by vectors. Among these diseases, dengue is at the top of the list. The aim of our study was to understand the consequences of temporal variability of air temperature in the occurrence of dengue in an area comprising seven municipalities of the Greater São Paulo. Method: Characterization of a temporal trend of the disease in the region between 2010 and 2013 was performed through analysis of the notified number of dengue cases over this period. Our analysis was complemented with meteorological (temperature) and pollutant concentration data (PM10). Results: We observed that the months of January, February, March, April and May (from 2010 to 2013) were the ones with the highest number of notified cases. We also found that there is a statistical association of moisture and PM10 with the reported cases of dengue. Conclusion: Although the temperature does not statistically display an association with recorded cases of dengue, we were able to verify that temperature peaks coincide with dengue outbreak peaks. Future studies on environmental pollution and its influence on the development of Aedes aegypti mosquito during all stages of its life cycle, and the definition of strategies for better monitoring, including campaigns and surveillance, would be compelling.


2004 ◽  
Vol 02 (03) ◽  
pp. 471-495 ◽  
Author(s):  
LUIGI PALOPOLI ◽  
GIORGIO TERRACINA

Predicting the three-dimensional structure of proteins is a difficult task. In the last few years several approaches have been proposed for performing this task taking into account different protein chemical and physical properties. As a result, a growing number of protein structure prediction tools is becoming available, some of them specialized to work on either some aspects of the predictions or on some categories of proteins; however, they are still not sufficiently accurate and reliable for predicting all kinds of proteins. In this context, it is useful to jointly apply different prediction tools and combine their results in order to improve the quality of the predictions. However, several problems have to be solved in order to make this a viable possibility. In this paper a framework and a tool is proposed which allows: (i) definition of a common reference applicative domain for different prediction tools; (ii) characterization of prediction tools through evaluating some quality parameters; (iii) characterization of the performances of a team of predictors jointly applied over a prediction problem; (iv) the singling out of the best team for a prediction problem; and (v) the integration of predictor results in the team in order to obtain a unique prediction. A system implementing the various steps of the proposed framework (CooPPS) has been developed and several experiments for testing the effectiveness of the proposed approach have been carried out.


Literatūra ◽  
2019 ◽  
Vol 61 (2) ◽  
pp. 110-124
Author(s):  
Eleonora Lassan

In 2015, Vremya Publishing House issued A Flute Solo, a book by V. Shenderovich, a multigenre and, according to the author of the article, intermedial work, since the peculiarities of the content of a political satire and a tragedy, a farce and a fantasy on the one hand and some features of musical pieces, a fugue in particular, on the other hand, have merged there. The author provides a detailed characterization of the plot, constructed as a grotesque depiction of the reality, the composition as relating a verbal text to a piece of music, and the symbolic value of certain elements, allowing not to agree to the definition of the book as being “desperately hopeless”.


2010 ◽  
Vol 84 (4) ◽  
pp. 646-667 ◽  
Author(s):  
Joseph H. Collette ◽  
James W. Hagadorn

Three new types of arthropod are described from Cambrian intertidal lithofacies of the Elk Mound Group and St. Lawrence Formation of Wisconsin and the Potsdam Group of Quebec. These arthropods are preserved ventrally in sandstone in life position and in three dimensions, allowing detailed characterization of limb morphologies, labrums, and other organs such as eyes. A taphonomic model is presented, illustrating this unusual, uncompressed, three-dimensional style of preservation. Arenosicaris inflata n. sp., from the Terreneuvian-Furongian Elk Mound Group and the Furongian St. Lawrence Formation, is the earliest unambiguous occurrence of a malacostracan phyllocarid. This 3 cm long arthropod had ovate valves, five pairs of biramous pleopods, and at least 3 pairs of thoracopods. Mosinieia macnaughtoni n. sp., a large (>10 cm long) euthycarcinoid of uncertain affinity with flattened or paddle-like appendages also occurs in Elk Mound strata. Mictomerus melochevillensis n. sp. represents a new euthycarcinoid family and is the first known non-trilobite arthropod from the middle Cambrian-Furongian Potsdam Group of Quebec. M. melochevillensis n. sp. is large (8–10+ cm long), with as many as eleven pairs of well-preserved homopodous, uniramous, non-paddle-like limbs. Both M. macnaughtoni and M. melochevillensis differ substantially from previously known euthycarcinoids in limb morphology and represent the oldest known representatives of the group. Additionally, both M. melochevillensis n. sp. and M. macnaughtoni n. sp. possess morphologies that are consistent with abundant subaerial and subaqueous Diplichnites and Protichnites trackways known from these units, suggesting that these may be the earliest land-going animals.


2016 ◽  
Vol 230 (5-7) ◽  
Author(s):  
Max Ramírez ◽  
Jose Rogan ◽  
Juan Alejandro Valdivia ◽  
Alejandro Varas ◽  
Miguel Kiwi

AbstractWe characterize, by means of the definition of a generalized distance, the differences and similarities between binary nanoclusters. To define analytically, and to compute numerically this distance, we have generalized an original concept that was introduced for pure clusters. Since the diversity of cluster conformations grows exponentially with their size, and becomes even larger when the cluster atoms are of more than one species, we limit our attention to small ones. Thus, to illustrate and analyze our distance definition we characterize the Lennard-Jones (LJ) minimum energy conformations of two- and three-dimensional (2D and 3D) binary clusters, for 5 ≤ 


2017 ◽  
Vol 20 (08) ◽  
pp. 1750050
Author(s):  
MATTEO BISSIRI ◽  
RICCARDO COGO

Assets or liabilities with embedded prepayment/extension options can be subject to behavioral risk, due to the unpredictable exercise strategy followed by the option holder who does not act purely on the strength of financial convenience. When seen from the viewpoint of the option seller, such behavior results in a lower option value and an additional source of uncertainty in future cash flows. In this paper, we propose a general framework to model behavioral risk by taking advantage of a full parallel with credit portfolio modeling and by combining the features of option-based and intensity models. Our approach is micro-structural, meaning that the aggregate prepayment rate derives from the sum of individual decisions. In principle, a detailed characterization of the behavior of a pool of investors can be performed depending on available data. A particular emphasis is placed on the precise definition of behavioral risk and on the modeling of nonmarket factors, which may contribute significantly to the variance of future cash flows. Finally, we discuss the calibration of a behavioral risk premium and the pricing of contracts with embedded options by introducing the concept of behavioral risk adjustment ([Formula: see text]VA), in line with the recent development of XVA methodology.


2018 ◽  
Vol 30 (2) ◽  
pp. 229-248 ◽  
Author(s):  
Zofia Włodarczyk

Abstract Biblical gardens have existed in the public space for almost 80 years, and yet still up to this moment no scientific definition of this type of garden layout has been developed, nor has any detailed characterization of them been published. Multifaceted, interdisciplinary research carried out in the years 1996-2017 made it possible to gather detailed data pertaining to 63 biblical gardens all over the world, primarily including the oldest ones. The fundamental characteristics of existing sites were determined on the basis of these results, including their naming in different languages, presentation through a logo and motto, plant selection along with the manner of its presentation, the symbols that they employ, street and garden furniture being used and the arrangements of miniature landscapes. An in-depth analysis of the material that had been gathered made it possible to formulate a scientific definition of a biblical garden as a specific type of greenery arrangement. The specifics of biblical gardens lie in the fact that they possess significant semantic value and are an illustration of the sacred texts of the Bible, one of the greatest works of literature. Various artistic works are being used in their arrangement, in addition to modern forms of design, which highlight sensory values through referring to the senses: sight, touch, hearing, smell and taste.


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