Results 261 to 270 of about 21,152 (308)

Ancient placer gold deposits

1991
In this chapter, ancient placers refer to deposits of Archaean and early Proterozoic age. Because each deposit may cover hundreds of square kilometres, they present economically attractive exploration targets. Individual ancient placer deposits like the Steyn/Basal placer in the Welkom goldfield of South Africa have produced in excess of 4500 t (metric
openaire   +1 more source

Placer Deposit: From Modeling to Evaluation

2013
The report is devoted to methodology of prognostic-search model construction of ore placer deposit on the basis of its multifactor multitag models under study by logic-informational methods. The logic-informational model is represented by feature set, informative for solution of prognostic problem. All informative tags receive a quantitative estimation
Nikolay Laverov, Irina Chizhova, Elena Matveeva   +2 more
openaire   +1 more source

Placer Deposits

2005
Mark D. Merlin, Patrick D. Nunn, John C. Kraft, Donald L. Forbes, Ian Shennan, E. Robert Thieler, Cheryl J. Hapke, Michael S. Bruno, Paul D. Komar, Dieter H. Kelletat, Detlef A. Warnke, Hillert Ibbeken, Joost H. J. Terwindt, George A. Maul, Nicholas C. Kraus   +14 more
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Logarithmic pattern in river placer deposits

Economic Geology, 1949
This paper presents the results of a series of 10 experiments made in the laboratory with a wooden trough, supplemented by 10 cases taken from actual placer maps. These data give the following concordant results, checking with each other:1. Deposition areas and erosion areas alternate with each other.2.
openaire   +1 more source

Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly  

Tin Placer Deposits on Continental Shelves

2017
A review of the geology of tin placer deposits on continental shelves is attempted. Under the heading of general characteristics, primary tin mineralization, distance of transport of cassiterite, dating and age of formation, concentration, preservation, and classification are examined.
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Placer Deposits and Processes

2021
Hartwig E. Frimmel, Chris S. James
openaire   +1 more source

Placer deposits

2011
openaire   +2 more sources

Obesity and adverse breast cancer risk and outcome: Mechanistic insights and strategies for intervention

Ca-A Cancer Journal for Clinicians, 2017
Cynthia Morata-Tarifa, Joyce M Slingerland   +1 more
exaly  

Multidisciplinary standards of care and recent progress in pancreatic ductal adenocarcinoma

Ca-A Cancer Journal for Clinicians, 2020
Aaron J Grossberg, William L Hwang, Anirban Maitra   +2 more
exaly