Presentation of The Paleontological Society Medal to Malcolm C. McKenna

1993 ◽  
Vol 67 (4) ◽  
pp. 688-688
Author(s):  
John J. Flynn

I have the great pleasure to be the citationist for presentation of the 1992 Paleontological Society Medal to Dr. Malcolm C. McKenna. Malcolm McKenna has had a profound influence on our profession, both as a research scientist and a mentor. He is one of the most broadly trained and interested scientists I know, and he has a consuming passion for learning. He loves all aspects of paleontology—field work, literature, laboratory analysis of specimens, theory, even fossil preparation (in his enthusiasm to uncover critical specimens, or trusting only himself to perform delicate preparation of unique fossils). Malcolm has never been afraid to propose controversial ideas, to change his mind when wrong, to tackle problems that others consider insoluble, or to incorporate new scientific techniques in his work before others realize their significance.

Author(s):  
Hasria ◽  
Masri ◽  
Suryawan Asfar ◽  
Arisona ◽  
Ali Okto ◽  
...  

The study area is located in North Kabaena District, Bombana Regency, Southeast Sulawesi. This paper is aimed to describe characacristics of chromite deposits.  This study is conducted in three stages, three stages including desk study, field work and laboratory analysis. Desk study mainly covers literature reviews. Field work includes mapping of surface geology and sampling of representative rocks types. Laboratory analysis includes the petrologic observation of handspecimen samples, petrographic analysis of the thin section and ore microscopy for polished section. The results of petrographic analysis show that olivine minerals are generally replaced by minerals orthopyroxene and has been alterated by lizardite type serpentine veins with a fractured structure. The mineral olivine is also replaced by the mineral chrysotile as a secondary mineral with a fibrous structure. Based on ore microscopy analysis show that chromite has generally experienced a lateritification process and has been replaced by magnetite, hematite and geotite minerals. Chromite has experience process of weathering and alteration from its source rock caused by tectonics that occurred in the study area. The results shows that the characteristics of chromite deposits in North Kabaena District Chromite deposits has generally encountered in peridotite rock which have a grain size of 0.3-20 cm. Furthermore, chromite deposits in the study area are also encountered in podiform deposits, distributed locally and shows podiform to tubular shape with the dimensions of 30-60cm.


2006 ◽  
Vol 1 (1) ◽  
pp. 7-15
Author(s):  
Bambang Nugroho Widi ◽  
Kisman Kisman

Iron as One of primary raw material in steel and construction industry, it's presence and potencies in Indonesia have an important role. Genetically, known 3 formation of iron deposits (1) Primary, (2) Lateritic, (3) Secondary/reworking process.Based on the survey conducted in Ende in 2005, the typical of iron deposits in this area is classified into sedimentary iron deposits (due to leaching, transporting, accumulating and depositing in somewhere). The accumulation of magnetite grains suggested is due to by leaching, washing in the long term and occurs intensively, so that produce high magnetite concentration in certain area. The interesting area is spread in four sectors; Rapo Rindu, Bheramari, Ruku Ramba and Ondorea sectors.The result of physical laboratory analysis (in concentrate) show the magnetite degree (MD) is vary from 10% to 50%, whereas from chemical analysis known the highest grade reach 37.10% and lowest grade is around 4.4%. However, the everage grade, in general are from 10 to 25 %.The potential of the deposits is obtained from combination between field work laboratory analysis and for those areas mentioned above the total hypothetics resources is 57.134.358,4 ton (concntrate). It seem the deposits of this area is not economic in mining view because very small (under 100 millions tonnes). 


1966 ◽  
Vol 21 (3) ◽  
pp. 245-245
Author(s):  
Daniel Gavales
Keyword(s):  

2011 ◽  
Vol 1 (4) ◽  
pp. 173
Author(s):  
David B. Sacks ◽  
Mark Arnold ◽  
George L. Bakris ◽  
David E. Bruns ◽  
Andrea Rita Horvath ◽  
...  

Afghanistan ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 282-301
Author(s):  
John Mock

In 1972, a brief article titled “Khandud, Village de la Vallée du Wakhan” appeared in Afghanistan 25. The subsequent decades of conflict precluded any follow-up research in Wakhan. The current article, based on field work from 2004 to 2016, examines the present condition of the sites described in 1972, offers a revised analysis of their significance, and introduces newly discovered rock art that connects Wakhan with the Saka culture of Central Asia and illustrates indigenous traditions of the Pamir-Hindukush ethnolinguistic region.


2000 ◽  
Vol 4 (1) ◽  
pp. 3-18 ◽  
Author(s):  
WDH Sellar

This article is the revised text of the lecture delivered to the Stair Society at its Annual General Meeting in November 1997. It defends the proposition that Scots law, from the time of its emergence in the Middle Ages, has been a “mixed” system, open to the influence of both the English Common Law and the Civilian tradition. It also compares and contrasts the Reception of the Anglo-Norman law with that of Roman law. The former was quite specific as regards both time and substantive legal content. The Reception of Roman law, on the other hand, took place over a considerable period of time, and its effects were complex and diffuse. Above all, the Civilian tradition and the wider ius commune provided an intellectual framework against which to measure Scots law. Both Receptions exercised a profound influence on the continuing development of Scots law.


2020 ◽  
pp. 47-78
Author(s):  
Guillermo Alberto Tricoci ◽  
Pablo Alejandro Corral ◽  
María Cecilia Oriolo

Various authors have concluded that there are different groupings that make it possible to explain the differences between companies in terms of their size, composition of capital or the degree of their evolution in terms of ICT and that within medium and small companies there are special dynamics that are necessary understand. This work is focused on this type of firms and a mixed methodology has been used to obtain data, which included the preparation of a field work supported by consultations with relevant personalities from academia, industry and consulting services in the area. It is proposed to draw an empirical scheme of the SME sector in Argentina, and results are presented in relation to the investment and adoption of ICT in these type of firms.


2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Daniel M. Cáceres ◽  
Esteban Tapella ◽  
Diego A. Cabrol ◽  
Lucrecia Estigarribia

Argentina is experiencing an expansion of soya and maize cultivation that is pushing the agricultural frontier over areas formerly occupied by native Chaco forest. Subsistance farmers use this dry forest to raise goats and cattle and to obtain a broad range of goods and services. Thus, two very different and non-compatible land uses are in dispute. On the one hand subsistance farmers fostering an extensive and diversified forest use, on the other hand, large-scale producers who need to clear out the forest to sow annual crops in order to appropriate soil fertility. First, the paper looks at how these social actors perceive Chaco forest, what their interests are, and what kind of values they attach to it. Second, we analyze the social-environmental conflicts that arise among actors in order to appropriate forest’s benefits. Special attention is paid to the role played by the government in relation to: (a) how does it respond to the demands of the different sectors; and (b) how it deals with the management recommendations produced by scientists carrying out social and ecological research. To put these ideas at test we focus on a case study located in Western Córdoba (Argentina), where industrial agriculture is expanding at a fast pace, and where social actors’ interests are generating a series of disputes and conflicts. Drawing upon field work, the paper shows how power alliances between economic and political powers, use the institutional framework of the State in their own benefit, disregarding wider environmental and social costs. 


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