Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 8 )

2019 ( 73 )

2018 ( 168 )

2017 ( 135 )

Custom range...

Search Results: 1 - 10 of 4729 matches for " Patti Formation "
All listed articles are free for downloading (OA Articles)
Page 1 /4729
Display every page Item
Soft Sediment Deformation Structures in the Maastrichtian Patti Formation, Southern Bida Basin Nigeria: Implications for the Assessment of Endogenic Triggers in the Maastrichtian Sedimentary Record  [PDF]
Solomon Ojo Olabode
Open Journal of Geology (OJG) , 2016, DOI: 10.4236/ojg.2016.66036
Abstract: Detailed fieldwork carried out in the southern part of Bida Basin, Nigeria, allowed the documentation of soft sediment deformation structures (SSDS) in the Maastrichtian Patti Formation. The aim of this study is to examine the sedimentary successions, describe and analyse these deformation features, discuss their deformation mechanisms and potential triggers. The Maastrichtian Patti Formation is composed of lithofacies interpreted to have been deposited in tidal and fluvial sedimentary environments. Soft sediment deformation structures recognised in the tidal sediments were clastic dykes, load cast, isolated sand balls, dish-and-pillar structures, convolute lamination, diapiric structures and recumbent folds. Severely deformed cross beds, ring structures, associated sand balls, normal folds and recumbent folds were identified in the fluvial sediments. SSDS recognised were interpreted to have been caused by effects of liquefaction and fluidization. Field observations, facies analysis and morphology of the SSDS indicate that there are relationship between the depositional environments and SSDS. Endogenic processes are considered as the trigger agents and they are represented by rapid sedimentation and overloading, impact of breaking waves, pressure fluctuations caused by turbulent water flow, cyclic stress and current generated by storm waves and changes in water table. The present study did not identify exogenic processes as trigger agent. The occurrence of SSDS in southern Bida Basin strongly favoured a non-tectonic origin but a clear relationship high energy processes in tidal and fluvial depositional environments.
Quelque part entre Charleville et l’Arcadie
Denis Saint-Amand
COnTEXTES : Revue de Sociologie de la Littérature , 2010, DOI: 10.4000/contextes.4693
Abstract: Un des topiques les plus éculés du discours de célébration des classiques , qui a pour effet de les renvoyer dans les limbes, comme hors du temps et de l’espace, bien loin en tous cas des débats et des combats du présent, consiste paradoxalement à les décrire comme nos contemporains et nos proches les plus proches ; tellement contemporains et tellement proches que nous ne doutons pas un instant de la compréhension apparemment immédiate (en réalité médiatisée par toute notre formation) que ...
A New Approach to Permian System in the Section of Gahkum Mountain (Zagros-Iran)  [PDF]
Maryam Abedini, Ali Aghanabati, Ali Meisami, Davoud Jahani
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.77065
The deposits of Permian system in Kuh-e-Gahkum consist of 480 m clastic subdiffusion of Faraghan Formation and carbonates of Dalan Formation. In this section, the sediments of Faraghan Formation, which is gradationally overlain by Dalan formation, unconformably overlies Zakin Formation (Lower Carboniferous). In the upper part, Kangan Formation rests on the Permian deposits with an erosional and unconformable contact. Studying the microscopic thin sections led to the identification of 37 genera and 37 species of Foraminifera as well as 14 genera and 15 species of algae. According to the identified foraminifera in Faraghan and Dalan Formations, the age of the rock units in Permian system is assigned to Julfian-Asselian.
Crime and Punishment with Habit Formation  [PDF]
Vladimir Kühl Teles, Joaquim Andrade
Theoretical Economics Letters (TEL) , 2011, DOI: 10.4236/tel.2011.13021
Abstract: Moral concepts affect crime supply. This idea is modelled assuming that illegal activities is habit forming. We introduce habits in an intertemporal general equilibrium framework to illegal activities and compare its outcomes with a model without habit formation. The findings are that habit and crime presents a non linear relationship that hinges upon the level of capital and habit formation. It is possible to show that while the effect of habit on crime is negative for low levels o habit formation it becomes positive as habits goes up. Secondly habit reduces the marginal effect of illegal activities return on crime. Finally, the effect of habit on crime depends positively on the amount of capital. This could explain the relationship between size of cities and illegal activity.
A Temporal Perspective on Learning Alliance Formation  [PDF]
Ming Piao
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.41003

When to enter the first learning alliance has strategic implications for firms’ long term success. However, research on timing of the first learning alliance is rare. As one of the few empirical studies on this issue, this paper aims to fill the gap by asking what the implications are when firms launch their first learning alliance at different points of time. Empirical results support the central proposition that if firms enter the first learning alliance too early or too late, they tend to rush into a second learning alliance in a short period of time. In the long run, they will lose the ability to innovate. Overall, this study has fundamental implications for organizational learning in particular and theory building in general.

Writing Practices as Spaces of Formation
Maria Rosa Rodrigues Martins de Camargo
Educa??o : Teoria e Prática , 2008,
Abstract: What relationships may be established between what is lived and remembered? What challenges the writing practices bring to the formation? I propose a dialogue with studies I have been advised where authors produce reflections that forward to a manner ofinterrelationship between oneself while subject of knowledge of the object researched and are revealed in the writing ruled in the changes of thinking. I ruled myself in the valorization of the narrative as a workmanship manner of communication linked to thealive substance of the existence, the experience; in the experience of literacy writing, the reason of being of the own existence; in the experience as it happens to us. To refer to the living experience it is to report the hike of the research, the construction of the object, theoretical-methodological ways, the considerations. To refer to the remembered is to pass through (dance?) of what is escaped to the formalizations, each report isunique, peculiar, a thing that penetrates, contaminates, labels, provoke an opening to whom read; are reports of the unforgotten that comes through the memory and materialize in a material fragments led by whom practice its own writing. The relationships between the experience that has lived and remembered gives clues for thinking theformation.
Experimental and Theoretical Study on the Ethane and Acetylene Formation from Electron Irradiation of Methane Ices  [PDF]
Marianna Barberio, Roberta Vasta, Pasquale Barone, Giulio Manicò, Fang Xu
World Journal of Condensed Matter Physics (WJCMP) , 2013, DOI: 10.4236/wjcmp.2013.31003

In this work we present an experimental and theoretical study on the formation of ethane and acetylene from solid methane condensed at 20 K and irradiated with a 500 - 3000 eV electron beam. The experiments were monitored with Thermal Desorption Spectroscopy. We observe that the electron irradiation induced a dehydrogenation of methane and a consequent formation of CHx (x = 1, 2, 3) fragments. Furthermore, in the solid during irradiation, a simple recombinetion reaction in the solid between two adjacent CHx molecules may form HC≡CH, H2C=CH2, and H3C-CH3 with a triple, double, and single carbon-carbon bond, respectively. The formed amount of ethane and acetylene increases with irradiation time and reaches a saturation value.


Influence of Supernova SN Ia Rate and the Early Star Formation Rate on the Galactic Chemical Evolution  [PDF]
Sandeep Sahijpal
International Journal of Astronomy and Astrophysics (IJAA) , 2013, DOI: 10.4236/ijaa.2013.33038

Based on the recently developed numerical approach to understand the formation and the chemical evolution of the milky-way galaxy in the solar neighborhood we study the influence of the supernova type SN Ia rates on the galactic chemical evolution. Supernova SN Ia plays an important role in producing the iron inventory of the galaxy. We also study the dependence of the chemical evolution on the star formation rate prevailing during the initial one billion years of the evolution of the galaxy. This era marks the formation of the galactic halo and the thick disk. A comparison of the elemental abundance distributions of the dwarf stars in the solar neighborhood is made among the various models simulated in the present work. In order to explain the majority of the observed elemental evolutionary trends, specifically those related with the galactic evolution of iron and oxygen, it would be essential to incorporate a major component of prompt SN Ia to the galactic evolution. The prompt SN Ia would produce significant fraction of SN Ia within the initial ~100 million years from the time of star formation. The essential requirement of prompt SN Ia would result in a significant enhancement of SN Ia rates during the earliest epoch of the galaxy. The elemental evolutionary trends also favor an enhancement in the star formation rate during the initial one billion years of the galaxy at least by a factor of three compared to the trend prevailing during the latter evolutionary time of the galaxy.

Export Earnings Instability and Investment in Ghana, 1981 to 2011  [PDF]
Patricia Woedem Aidam, Kwabena Asomanin Anaman
Modern Economy (ME) , 2014, DOI: 10.4236/me.2014.55059

The study investigates the effect of the instability of export earnings on gross fixed capital formation (total investment) in Ghana over the period, 1981 to 2011, marked by continuous political stability. The analysis employs the autoregressive distributed lag (ARDL) method of cointegration to evaluate a set of factors, which affect investment as measured by the investment to gross domestic product (GDP) ratio. The results of the analysis confirm the expected negative relationship between export earnings instability and investment. Other factors that significantly influence investment in Ghana are real GDP growth, merchandise trade balance, real interest rate and gross domestic savings ratio. Based on the analysis, we recommend policy measures aimed at increasing the domestic savings ratio and export diversification given the re-emergence of reduced real values of Ghanaian export commodities in the world market after the high values of these commodities during the first decade of the 21st century.

Sequence Microbiostratigraphy of Jahrum and Asmari Formation in Shiraz Area, Zagros, Fars, Iran  [PDF]
Mirzaee Mahmoodabadi Reza
Open Journal of Geology (OJG) , 2014, DOI: 10.4236/ojg.2014.44009
Abstract: The study of sequence microbiostratigraphy of Jahrum and Asmari formation in Shiraz, Fars, Zagros, SW of Iran and recognition of relationship between depositional sequence parameters and microbiostratigraphy 3 stratigraphic sections (Beyza, Sarvestan A, B and Estahban sections) have been selected and studied. Jahrum and Asmari formations in study area with unconformity overlying together have been exposed. Based on Field and laboratory studies such as microfossils, microbiostratigraphy, microfaceis, sedimentary environment models and sequence stratigraphy evi- dences recognized 3 depositional sequences in study area that presented during Paleocene-Oli- gomiocene. Jahrum formation consists of one depositional sequence and Asmari formation consists of two depositional sequences. Microfossils and microbiostratigraphy studies will lead to the identification of 6 biozones in the studied area. In Beyza and Estahban sections biozones 1, 2 and 3 are related to Jahrum formation and suggest Paleocene to Middle Eocene age for this formation and biozone 4 is related to Asmari formation and suggests Oligocene age for this formation. In Sar- vestan section biozones 1, 2 and 3 are related to Jahrum formation and suggest Paleocene to Middle Eocene age for this formation and biozones 4 and 5 are related to Asmari formation and these biozones indicate Oligocene-Miocene (Aquitanian) age for Asmari formation. Sequence microbiostratigraphy studies indicate that biozones of Jahrum formation are formed in DS1 and biozones of Asmari formation are formed in DS2 and DS3. Also, some relationship between depositional sequence parameters and distribution of microfossils and biozones as in the case of in SB1 and LST facies didn’t found any microfossil and we can’t suggest biozonation. In study area upper part of HST of DS1 (Jahrum formation) and some biozones related to Upper Eocene have been eliminated, for example in Estahban, Sarvestan B and Beyza sections all biozones related to Upper Paleocene to Middle Eocene and eliminated biozones of Upper Eocene. In study area SB2 existed in lower boundary of DS1 (between Sachun and Jahrum formation) and between DS2 and DS3 of Asmari formation. Some parts of biozones in study area could correlate with SB2. For example for upper limit of biozones no 4 in Estahban section overlies to SB2 of DS2 in Asmari formation. Paleoecological situation in TST systems tract suitable for reproduction and growth large foraminifera and biozones 1, 2 and 3 are formed in systems tract. MFS and
Page 1 /4729
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.