Reconnaissance Studies

Leiker, T.J., C.E. Rostad, C.R. Bames, and W.E. Pereira. 1991. A reconnaissance study of halogenated organic compounds in catfish from the lower Mississippi River and its major tributaries. Chemosphere 23 817-829. Littrell, E.E. 1986. Shell thickness and organochlorine pesticides in osprey eggs from Eagle Lake, California. Calif. Fish Game 72 182-185. 

Evans, T. L., Campbell, F. A., Krouse, H. R. 1968. A reconnaissance study of some western Canadian lead-zinc deposits. Economic Geology, 63, 349-359. 

Reconnaissance studies have shown that surface waters originating from waste rock and tailings dumps are typically characterized by low pH, high sulfate levels and variable metal contents. Consequently, the aim of this study is to investigate the nature of ground water interactions with... 

Nelson DR, McCulloch MT (1989) Petrogenic applications of the "K- Ca radiogenic decay scheme—a reconnaissance study. Chem Geol (Isot Geosci Sect) 79 275-293 Niederer FR, Papanastassiou DA (1984) Ca isotopes in refractory inclusions. Geochim Cosmochim Acta 48 1279-1293... 

Hagiwara Y (2000) Selenium isotope ratios in marine sediments and algae. A reconnaissance study. M.S. 

Meek, M., Love, D. and Mapani, B. (2006) Zimbabwean mine dumps and their impacts on river water quality -a reconnaissance study. Physics and Chemistry of the Earth, 31(15-16), 797-803. 

Thurman, E.M., D.A. Goolsby, M. Meyer, M.S. Mills, M.L. Pomes, and D.W. Kolpin (1992). A reconnaissance study of herbicides and their metabolites in surface water of the midwestem US using immunoassay and gas chromatography/mass spectrometry. Environ. Sci. Technol., 26 2440-2447. 

Midcontinent Herbicide Project. During 1989, a reconnaissance study of 147 streams in 10 midwestem states was conducted to determine the geographic and seasonal distribution of herbicides and their degradation products. Sites were selected to ensure geographic distribution and regional-scale interpretation of the data (Figure 30.4). The streams were sampled before application of herbicides, during the first major runoff period after application of herbicides,... 

In addition, relatively little petrographic work, such as that done by Cohen, Spackman and Dolsen (3) on Florida peats, has been attempted on Mississippi River Delta Plain sediments. This paper describes results of a reconnaissance study undertaken to examine, both chemically and petrographically, the occurrence of sulfur in Mississippi Delta Plain sediments. 

Tommasini, S., Davies, G., and Elliott, T. (2000). Lead isotope composition of tree rings as bio-geochemical tracers of heavy metal pollution A reconnaissance study from Firenze, Italy. Appl. Geochem. 15, 891—900. 

The term reconnaissance study relates to studies conducted for the first time, covering extended areas, to be completed fast and with minimal costs. The purpose of reconnaissance studies is to get a general picture of the water systems involved, to locate promising sites where large amounts of high-quality water can be found, to scan the area for features of special interest, to locate possible pollution processes, and to arrive at a conceptual model. The results of reconnaissance studies are the basis for the planning of... 

Longhi J. and Pan V. (1988) A reconnaissance study of phase boundaries in low-alkali basaltic liquids. J. Petrol. 29, 115-147. 

The reconnaissance studies of fluid inclusions (Horita et al., 1991, 2002) suggest also that early Paleozoic seawater was —2.5 X depleted in SO4, compared to its present-day counterpart. From model considerations, based on the mineralogy and volume of evaporites, claims have been made also for changes in the potassium concentration of Phanerozoic oceans (Hardie, 1996), and for an increase in the total salinity, from the modem 35 ppt to —50 ppt in the Cambrian (Hay et al., 2001). The experimental confirmation for all these theoretical assertions is presently not available (see Chapter 6.21). 

Van Gosen B. S., Lowers H. A., Bush A. L., Meeker G. P., Plumlee G. S., Brownheld 1. K., and Sutley S. J. (2002) Reconnaissance Study of the Geology of US Vermiculite Deposits—are Asbestos Minerals Common Constituents US Geological Survey Bulletin 2192, 8pp. 

Sulphur-gas geochemistry is not, ideally, a "stand alone" technique. It should be used in conjunction with other geochemical, geophysical and geologic studies to understand the processes that cause and influence sulphur-gas anomalies around and over mineral deposits. When the processes become more fully understood, predictive models may be developed for the occurrence of volatile sulphur compounds over different types of mineralisation and over buried mineralisation. Future work will then expand the use of sulphur-gas anomalies from studies of specific mineral deposits to regional and reconnaissance studies. 

Viles, H.A. Goudie, A.S. (1990a) Reconnaissance studies of the tufa deposits of the Napier Range, NW Australia. Earth Surface Processes and Landforms 15, 425-443. 

Nelson, D.R. McCulloch, M.T. (1989) Petrogenetic applications of the 40K-40Ca radiogenic decay scheme - a reconnaissance study. Chemical Geology 79, 275-293. 

Presser TS, Swain WC, Tidball RR, et al. 1991. Geologic sources, mobilization, and transport of selenium from the California coast ranges to the Western San Joaquin Valley A reconnaissance study. Govt Reports Announcements Index (GRA I), Issue 14, San Jocquin Valley Drainage Program, Sacramento, CA. NTIS/PB91-176727. 

The results presented here concern the reconnaissance studies carried out over the entire Mediterranean region for the year 1999, 2000, and 2001, plus a specific campaign in the Adriatic Sea in the summer 2004. In the year 1999, a set of 1600 SAR images (ERS-1 and ERS-2) was used. In the year 2000, a larger set of 3500 ERS-2 SAR images was analysed. In the year 2001, a set of 2900 ERS-2 SAR images was analysed. Although these results are incomplete, they yield the first comprehensive picture of the dimension of the problem. 

Leiker TJ, Rostad CE, Barnes CR, et al. 1991. A reconnaissance study of halogenated organic compounds in catfish from the lower Mississippi River and its major tributaries. Chemosphere 23 817- 830. 

Bailey, A.M., SheiriU, J.R, Blackson, J.H., and Kosters, E.C. 1990. Sulfur and Pyrite in Precursors for Coal and Associated Rocks A Reconnaissance Study of Three Modem Sites. Geochemistry of Sulfur in Fossil Fuels. ACS Symposium Series. American Chemical Society, Washington, DC, Vol. 429, Chapter 10, pp. 186-203. Baker, E.W. 1969. In Organic Geochemistry Methods and Results, G. Eglinton and M.T.J. Murphy (Eds.). 

In general, engineering, geological, social, and economic and medicine sciences rather than numbers, qualitative descriptions are dominant at initial information in any reconnaissance study with descriptive linguistic explanations. Ordinary people without proper education think in a fuzzy manner because they do not have... 

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