PROSPECTING FOR CHROMITE WITH GRAVIMETER AND MAGNETOMETER OVER RUGGED TOPOGRAPHY IN EAST TURKEY

Geophysics ◽  
1956 ◽  
Vol 21 (2) ◽  
pp. 433-454 ◽  
Author(s):  
Sulhi Yüngül
Keyword(s):  
Major Part ◽  
Promising Technique ◽  
Magnetic Susceptibilities ◽  
Chromite Ore ◽  
Ore Body ◽  
Gravity And Magnetic ◽  
Rugged Topography ◽  
Terrain Corrections ◽  
Made In

From 1952 to 1954 gravity and magnetic surveys were made in Turkey over the concessions of the Eastern Chromite Works to discover new chromite reserves in a region of rugged topography and complicated geology. As a result of these surveys a new chromite ore body of 250,000 tons was discovered at the bottom of an open cut beneath a thin horizontal sheet of chromite. It is shown that gravity prospecting is a more promising technique for locating relatively large chromite masses, even over rugged topography, than might have been expected. The terrain corrections, which constitute the major part of the computations, must be simplified and it is important that the correct surface densities be employed. In addition, difficulties arizing from the high and variable magnetic susceptibilities in serpentines must be surmounted. The mass of chromite estimated from the gravity results agrees well with the amount found by subsequent drilling.

scholarly journals The Beholder’s Eyes: Audience Reactions to Organizational Self-claims of Authenticity

2018 ◽  
Vol 4 ◽  
pp. 237802311879303 ◽  
Author(s):  
David W. Lehman ◽  
Balázs Kovács ◽  
Glenn R. Carroll
Keyword(s):  
Major Part ◽  
Online Reviews ◽  
Emotional Reactions ◽  
Category Type ◽  
Moral Claims ◽  
Made In

Organizations normally benefit from being perceived as authentic. Yet an ongoing puzzle persists about self-claims of authenticity: although the weight of findings suggests that individuals will devalue organizations touting themselves as authentic, some findings suggest that such self-claims may be rewarded. The authors suggest that this puzzle can be answered, at least partly, by considering two fundamental but different meanings of authenticity. The authors posit that individuals will react negatively when claims concern being true to a category (“type authenticity”), whereas they will react positively when claims concern being true to the organization’s values (“moral authenticity”). A major part of this reasoning involves the emotional reactions evoked by moral claims. In study 1, authenticity claims made in the texts of 1,393 restaurant menus and corresponding ratings of 449,919 online reviews from 2009 to 2016 were analyzed. Study 2 involved an experiment to examine reactions to the two kinds of claims separately. The findings generally support the argument and apparently help explain audience reactions to organizational self-claims about authenticity.

The Individual and Society in Gandhi's Political Thought

1969 ◽  
Vol 28 (2) ◽  
pp. 313-320
Author(s):  
Indira Rothermund
Keyword(s):  
Political Philosophy ◽  
Political Thought ◽  
Major Part ◽  
Indian Philosophy ◽  
Special Importance ◽  
Social Setting ◽  
The Social ◽  
The Individual ◽  
Freedom Movement ◽  
Made In

The problem of the relation of the individual to society and to the state was central to Gandhi's political thought and action. It has been said that Gandhi's “deliberate onslaught on the creed of individualism as it has been in operation during the last two or three centuries gave it a mortal blow.” How are statements like this to be reconciled with the fact that Gandhi appealed to individual conviction in his campaigns?In analyzing this problem we should look at the main concepts of social and political philosophy which had an impact on Gandhi's life and thought. Indian philosophy is of special importance in this context and therefore a major part of this paper is devoted to the discussion of Indian concepts and ideas as they were understood and interpreted by Gandhi. Much of Gandhi's thought and action can be explained only in terms of the historical situation and the social setting of his day and age. But Gandhi's campaigns and his contribution to the Indian freedom movement have been described by many authors and therefore no attempt is made in this paper to outline the course of events.

GEOPHYSICAL PROGRESS

Geophysics ◽  
1953 ◽  
Vol 18 (3) ◽  
pp. 510-524 ◽  
Author(s):  
Henry C. Cortes
Keyword(s):  
United States ◽  
Oil And Gas ◽  
Geophysical Methods ◽  
The United States ◽  
Oil Fields ◽  
First Year ◽  
Free Enterprise ◽  
Gravity And Magnetic ◽  
Electrical Prospecting ◽  
Made In

Histories or reviews covering the period from 1922, the first year of petroleum geophysics in the United States, to 1940 were ably presented by Eckhardt, Macelwane and Weatherby at the Society of Exploration Geophysicists’ Annual Meeting of the latter year. This paper deals mainly with advances in geophysics since 1940. Marked progress has been made in the amount of geophysical activity, in the number of new oil fields discovered per year based wholly or partially on geophysics, in geophysical techniques, and in education. Improvements in instrumentation, field operational procedures, and interpretation methods have steadily increased the usefulness of the three major methods—seismic, gravity, and magnetic. The development of the aerial magnetometer, especially, and the underwater gravimeter represent notable achievements. These developments have made possible the extension of geophysical activity offshore, and in many other areas previously considered inaccessible. Advances have also been made in logging, particularly in the radioactivity type, geochemistry and electrical prospecting. Research, both fundamental and applied, is being conducted on a greater scale now than in 1940 or prior thereto. Increased geological‐geophysical coordination has led to better appreciation and utilization of the geophysical methods and has resulted in the discovery of important oil and gas reserves. Novel or more direct oil finding methods may possibly be discovered or perfected. It is more probable, however, that the future of exploration geophysics will be primarily in the continual refinement of the present known methods. Advances in exploration geophysics and geology, along with teamwork, should insure adequate production and reserves within the United States for a long period. This is predicated on our nation having competitive free enterprise, which has been responsible for the leadership of this country in oil finding, producing, transporting and refining techniques.

Improvement of the conic prism model for terrain correction in rugged topography

Geophysics ◽  
1981 ◽  
Vol 46 (7) ◽  
pp. 1054-1056 ◽  
Author(s):  
Raymond J. Olivier ◽  
Réjean G. Simard
Keyword(s):  
Gravity Anomalies ◽  
Terrain Correction ◽  
Field Calculation ◽  
Bouguer Gravity ◽  
New Model ◽  
Gravity Station ◽  
Rugged Terrain ◽  
Rugged Topography ◽  
Terrain Corrections ◽  
Prism Model

Terrain corrections for Bouguer gravity anomalies are generally obtained from topographic models represented by flat‐topped compartments of circular zones, utilizing the so‐called Hayford‐Bowie (1912), or Hammer’s (1939) method. Some authors have introduced improved relief models for taking uniform slope into consideration (Sandberg, 1958; Kane, 1962; Takin and Talwani, 1966; Campbell, 1980). We present a new model that increases the accuracy of the calculation of terrain correction close to the gravity station in rugged terrain, especially when conventional templates with few zones are used in field calculation.

Gravimetric terrain corrections in western Canada

1983 ◽  
Vol 20 (2) ◽  
pp. 259-265 ◽  
Author(s):  
J. A. R. Blais ◽  
G. D. Lodwick ◽  
R. Ferland
Keyword(s):  
Western Canada ◽  
Gravimetric Measurements ◽  
Optimal Technique ◽  
Rugged Topography ◽  
Terrain Corrections ◽  
Theoretical Results

Terrain corrections for gravimetric measurements have been studied in terms of accuracy requirements and automated computations. Geodetic and geophysical applications in western Canada have been considered specifically because of complications arising from the rugged topography. Comparing the computation methods of Nagy and Mathisen in relation to the theoretical results, the former is shown to be more reliable with simulated accidented topography. Other approaches are also briefly discussed and general recommendations are made for an optimal technique to compute gravimetric terrain corrections in western Canada.

scholarly journals On Plurality Category and Teaching in Turkish

2017 ◽  
Vol 5 (9) ◽  
pp. 94 ◽  
Author(s):  
Semra Alyılmaz
Keyword(s):  
Major Part ◽  
Historical Process ◽  
World Languages ◽  
The Subject ◽  
Made In ◽  
Double Group

When discussing about "plurality" of nouns in Turkish, it reminds /+lar/ affix after nouns (morpheme) and the subject is undervalued. Whereas, plurality and formation of plurality is not simple as it is thought as well as it is not made up of /+lar/ affix. It is because /+lar/ affix is only one of the linguistic elements in the morphological plurality used for making plural in Turkish.Out of /+lar/ affix, /+An+/, /+Ar+/, /+(ş)Ar+/, /+GIl+/, /+GUn+/, /+ºK+/, /+lA+/, /+ºs+/, /+ºş+/, /+ºT+/, /+ºz+/ affixes have given plurality, plus, double, group, generalization, exaggeration, respect etc. to the words they are added in the historical process of Turkish. However, a major part of affixes used in plurality by morphological ways in Turkish has lost their function of plurality etc. in the historical process and combined with the base, origin, and body of their words.The plurality in Turkish is a name of category (as it is in all world languages) and made in three ways: Morphological plurality, semantic plurality, and syntactic pluralityIn this article, information is given primarily in "generality" and "singularity" and secondarily in plurality in Turkish, ways of forming this category, and some problems in learning it.

scholarly journals Multi-scale development of a stratiform chromite ore body at the base of the dunitic mantle-crust transition zone (Maqsad diapir, Oman ophiolite): The role of repeated melt and fluid influxes

Lithos ◽  
2019 ◽  
Vol 350-351 ◽  
pp. 105235 ◽  
Author(s):  
Mathieu Rospabé ◽  
Georges Ceuleneer ◽  
Nicolas Granier ◽  
Shoji Arai ◽  
Anastassia Y. Borisova
Keyword(s):  
Scale Development ◽  
Transition Zone ◽  
Oman Ophiolite ◽  
Chromite Ore ◽  
Multi Scale ◽  
Ore Body

ESTIMATING ORE MASSES IN GRAVITY PROSPECTING

Geophysics ◽  
1945 ◽  
Vol 10 (1) ◽  
pp. 50-62 ◽  
Author(s):  
Sigmund Hammer
Keyword(s):  
Potential Theory ◽  
Mass Distribution ◽  
Total Mass ◽  
Gravity Data ◽  
Point Of View ◽  
Theoretical Point ◽  
Chromite Ore ◽  
Ore Body ◽  
Gauss Theorem ◽  
Mass Estimate

The interpretation of the results of gravitational prospecting surveys is considered, from a theoretical point of view, in terms of the magnitude of the causative mass as distinct from the conventional interpretation in terms of the mass distribution (size, shape and depth). A general proof is given, based on Gauss’ Theorem in potential theory, that the former problem is unique and the uniqueness is illustrated by an analytical example which also serves to demonstrate the well‐known lack of uniqueness of the latter problem. Practical formulae are presented for estimating the total mass directly from the gravity data and the precision of the mass estimate is considered. The method is applied to a practical gravimeter survey over a known chromite ore body and the estimated mass is found to be in excellent agreement with estimates from core drilling.

scholarly journals The Mask of the Underworld Daemon—Some Remarks on the Perseus-Gorgon Story

1955 ◽  
Vol 75 ◽  
pp. 9-16 ◽  
Author(s):  
J. H. Croon
Keyword(s):  
Major Part ◽  
Hot Springs ◽  
Present Moment ◽  
Central Question ◽  
Ancient Greek ◽  
History Of Religions ◽  
History Of ◽  
High Degree ◽  
Greek World ◽  
Made In

At the VIIth Congress for the History of Religions, held at Amsterdam in 1950, the central question was posed whether a mythical-ritual pattern could be discerned in various ancient and modern civilisations. Reading the Congress Report, one does not get the impression that many final and far-reaching conclusions have been reached. Various conflicting views were brought forward in the section-meetings. But meanwhile the discussion goes on. And it may be not without interest to inquire into some individual cases where a ritual background behind some famous myth can be reconstructed, if not beyond all doubt, at least with a high degree of probability. In the following pages such an attempt is made in the case of the Seriphian Perseus-legend.The present writer believes that there is a clue to the understanding of this story, which has been overlooked hitherto, namely its connexion with hot springs. A certain number of cults, myths, and legends were connected with such springs in the ancient Greek world; that they all show in origin a chthonic aspect is self-evident. But to dwell upon all of them would fall beyond the scope of this article. Let us for the present moment turn our attention to the thermal springs of that tiny piece of rock in the Aegean round which a major part of the Perseus-story centres.

THE INVESTIGATION OF EARTH RESISTIVITIES IN THE VICINITY OF A DIAMOND DRILL HOLE

Geophysics ◽  
1951 ◽  
Vol 16 (4) ◽  
pp. 659-665 ◽  
Author(s):  
A. R. Clark ◽  
D. J. Salt
Keyword(s):  
Drill Hole ◽  
Conducting Medium ◽  
Electrical Measurements ◽  
Conducting Sphere ◽  
Diamond Drill ◽  
Sulphide Ore ◽  
Ore Body ◽  
The Difference ◽  
Commercial Size ◽  
Made In

The method of electrical images has been used to derive an expression for the difference in potential between two points close to a good conducting sphere in a poor conducting medium. The results indicate that the presence of a conducting ore body of commercial size near a drill hole can be detected by suitable electrical measurements made in the hole. The results of a test of the method in a drill hole near a small conducting sulphide ore body are given.

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