Geological characteristics

Kuroko deposits occur in the Green tuff region which is characterized by thick altered volcanic and sedimentary piles of Miocene age. 

Distributions of Kuroko deposits and names of the representative mines are given in Fig. 1.10 and Table 1.1. Metals produced during the past are summarized in Table 1.1. 

Large Kuroko deposits occur in the Hokuroku district in Northeast Honshu (Fig. 1.11). Small numbers of Kuroko deposits are found in other districts such as Southwest Hokkaido, the northern part of Honshu (Shimokita Peninsula district), the middle of Northeast Honshu (Wagaomono and Aizu districts) and western Honshu (San-in district) (Fig. 1.10). 

It is clear in Fig. 1.10 that the distribution of Kuroko deposits is restricted in a narrow zone in the Green tuff region which was called a Kuroko belt by Inoue (1969). This belt was formed by rapid subsidence under the extensional stress regime and is thought to have been a back-arc depression zone at middle Miocene age. The relationship between tectonic setting and formation of Kuroko deposits is discussed in section 1.5. 

---

Uses raw data from field tests to compute hydraulic conductivity computed value is evaluated by the expert system for its correctness with regard to these considerations site-specific geological characteristics, validity of test procedures, accuracy of the raw data, and the computational method. System is written in Arity-Prolog on a PC. 

Berger, B.R. (1985) Geologic-geochemical features of hot-spring precious-metal deposits. In Tooker, E. (ed.). Geologic Characteristics of Sediment- and Volcanic-hosted Disseminated Gold Deposits — Search for an Occurrence Model. U.S. Geol Surv. Bull, 1646, 47—53. 

Shikazono, N., Nakata, M. and Shimizu, M. (1990) Geochemical, mineralogic and geologic characteristics of Se- and Te-bearing epithermal gold deposits in Japan. Mining Geology, 40, 337-352. 

The mineralogical, isotopic and geologic characteristics of Osorezan are similar to Te-type epithermal Au-Ag vein-type deposits. These characteristic features of Osorezan and Teine (Te-type) are similar to each other. 

In this section (2.2), geochemical, mineralogical and geological characteristics of epithermal vein-type deposits summarized in section 1.4 will be compared with subaerial active geothermal systems associated with base metal and Au-Ag mineralizations mentioned in sections 2.1.1 and 2.1.2. 

Sato and Kase (1996) summarized geological characteristics and inferred tectonic settings of the Besshi-type deposits as shown in Table 2.21. These geological characteristics are summarized below. 

The distribution of radon levels in houses located in these 20 areas will be measured either through EPA/State cooperative surveys or as a part of EPA s national survey. If correlations can be shown to exist between geological characteristics and indoor radon levels, then this information can be used to design surveys to more efficiently identify homes with high indoor radon levels. 

Wood, P.C. 1991. The Hollinger-Mcintyre gold-quartz vein system, Timmins, Ontario Geological characteristics, fluid properties and light stable isotope geochemistry. Ontario Geoiogicai Survey Open Fiie Report 5756, 289 p. 

Zhao, Y. 2004. Geological characteristic and exploration indication of Jinwozi Gold Deposit. Journal of Xinjiang Nonferrous Geology, 2004, 18-21 (in Chinese with English abstract)... 

The swelling of bentonites in water and, as will be discussed in Section 3.2.2, the migration of a nonadsorbing ion show no direct relationship to the montmoril-lonite content or other geological characteristics in this narrow range (35%-48% montmorillonite content, Table 3.1). However, they are influenced by several other factors, for example, the quality of the exchangeable cation (Chapter 2, Section 2.1), particle size distribution, aggregation, density, free pore size, other minerals, etc. 

The rationale for this section is summed up by this question If the CCOP or OJP were accreted on to a continental margin and preserved in the geologic record for 1 billion years, what features could we use to identify them as oceanic plateaus This section will review diagnostic geochemical and geological characteristics of oceanic plateaus, and then will show, illustrated by examples, how these criteria can be used to identify plateau sequences in the geological record. Table 3 provides a summary of the diagnostic features of Cretaceous oceanic plateaus and mafic sequences... 

Mine wastes, tailings, and smelter slag and emissions can contain complex mixtures of minerals that are typically a predictable function of the geologic characteristics of the deposit type being mined, coupled with the ambient climate/ environmental characteristics and the mining or mineral processing method used. See Chapter 9.05 and Plumlee (1999) for a detailed discussion. 

Sebela, S., 1999, Morphological and geological characteristics of two denuded caves in SW Slovenia, Acta carsologica, 28 pp. 175-185. 

Heyl, A. V., 1983, Geologic characteristics of three major Mississippi Valley districts in International Conference on Mississippi Valley-Type lead-zinc deposits, Rolla, Missouri, United States, p. 27-60. 

A summary of the principal geologic characteristics of each of the deposits under consideration is presented in Table I. 

One natural core was used to compare the performance of waterflood (W), AP flood, and ASP flood. The recovery factors for W, AP, and ASP were 50%, 69.7%, and 86.4%, respectively. These core flood tests were history matched, and the history-matched model was extended to a real field model including alkaline consumption and chemical adsorption mechanisms. A layered heterogeneous model was set up by taking into account the pilot geological characteristics. The predicted performance is shown in Table 11.3. In the table, Ca, Cs, and Cp denote alkaline, surfactant, and polymer concentrations, respectively. After the designed PV of chemical slug was injected, water was injected until almost no oil was produced. The total injection PV for each case is shown in the table as well. The cost is the chemical cost per barrel of incremental oil produced. An exchange rate of 7 Chinese yuan per U.S. dollar was used. From... 

When air and water become polluted, it is relatively easy to identify the most important exposure pathways (i.e. for water it would typically be consumption). However, humans may be exposed to soil contaminants through several potential exposure routes and the significance of each of these routes will vary depending on the contaminant involved, the geological characteristics of the soil, the type of receptor, the site location and the proposed end use of the site. It is important to ensure that all potentially viable exposure pathways are properly evaluated. Fundamentally, soil contaminants can enter the body by three main pathways ... 

Classically, the earth s continents were viewed as distinct entities (V), whose major features would suffer no fundamental alteration so that any observed changes would be reversible (t). Biological and geological characteristics within the continents (3d) as well as the geographic relations of the continents to each other (3D) were noted. The approximate complementarity of shape of West Africa and the Eastern coast of South... 

Law, B. E. (ed.) 1984b. Geological characteristics of low-permeability Upper Cretaceous and lower Tertiary rocks in the Pinedale anticline area, Sublette County, Wyoming. U.S. Geological Survey Open-File Report 84, 753. 

---