 | | Journal (article/letter/editorial) | | MINERALOGY FROM GEOCHEMICAL WELL LOGGING MICHAEL M. HERRON Schlumberger-Doll Research, Old Quarry Road, Ridgefield...kaolinite, illite, K-feldspar, and heavy minerals. Concentrations of AI, Fe, and K in core samples were...estimate the abundances of kaolinite, illite, K-feldspar, and, by subtraction from unity, quartz. Concentrations...indicating trace quantities of smectite. Quartz and K-feldspar were also abundant. About 2% siderite and/or...eight samples of Georgia kaolinites were supplied by J. L. Harrison of the Georgia Kaolin Research Company |  | | Report (volume) | | Quadrangle and a Part of the Aeneas Quadrangle Ferry County, Washington By SIEGFRIED MUESSIG GEOLOGICAL SURVEY...__--____-___-_---___---_-_--__________Quartz monzonite of Herron Creek_____________________________ Outcrop area...rocks.._______________________________ California mine--_-_____-__----__--_-_-_-___-_---_______.__ Belcher...Republic and a part of the Aeneas quadrangles, Ferry County, Wash.._-In pocket Page FIGURE 1. Index map_______________...analysis, mode, and norm of 5. Quartz monzonite of Herron Creek._____________ 6. Quartz monzonite_--_--_ |  | | Report (chapter) | | Concentrations of thorium (Th), uranium (U) and potassium (K) are measured using natural gamma-ray spectrometry...precision of NGS measurements in sandstones varies: K measurement is in general moderately good; Th measurement...measurement is unreliable. Concentrations of Th, U and K in standard tables of minerals used commonly in log...elemental concentrations found in sandstone minerals. Th/K cross-plots are shown to be unsuitable for the identification...normal geological circumstances be identified from the K content of the rock. Authigenic kaolinite has no particular |  | | Report (chapter) | | applications of geochemical well logging M. M. Herron and S. L. Herron Geological Society, London, Special Publications...in sedimentary formations: A1, Si, Ca, Fe, S, Ti, K, Th, U, Gd and possibly Mg. Each of these elements...capacity, intrinsic permeability, and grain size (Herron, 1987a,b). The next step of using these composition...University of Chicago on June 1, 2012 166 M.M. HERRON & S. L. HERRON available (Hertzog et al. 1987). Carbon...gamma-ray spectroscopy (Roscoe & Grau, 1985; S. Herron, 1986). Geochemical lithology One of the most |  | | Report (chapter) | | Petrophysical estimation from downhole mineralogy logs P. K. H A R V E Y 1, M. A. L O V E L L 1, J. C. L O F T...exchange capacity (Chapman et al. 1987; Herron 1987b; Herron & Grau 1987), thermal conductivity (Dove...(Hastings 1988), neutron capture cross-section (Herron 1987b), and, indirectly and probably in formation...formation specific situations, permeability (Herron 1987a). The relationship between mineralogy and the physical...in abundance of From Lovell, M. A. & Harvey, P. K. (eds), 1997, Developments in Petrophysics, Geological |  | | Report (chapter) | | a problem of accuracy in core-log calibration P. K. Harvey, T. S. Brewer, M. A. Lovell and S. A. Kerr...calibration P. K. H A R V E Y , 1 T. S. B R E W E R , 1 M. A. L O V E L L 1 & S. A. K E R R 2 1Borehole...total clay and pyrite. The results for illite and K-feldspar were poor, a reflection of their relatively low...(GLT) offering measurements of Si, A1, Ti, Fe, Ca, K, S, the minor elements Gd, Th, and U, together with...1993; Odom et al. 1994; Jacobson & Wyatt 1996, Herron & Herron 1998). Transformation of the major elements |  | | Report (chapter) | | Research, Old Quarry Road, Ridgefield, C T 06877-4108, USA Abstract: A new quantitative lithology interpretation...the formation is assumed to be composed quartz, feldspar, and mica minerals. Examples of the new lithology...at relatively low cost and high logging speeds (Herron 1995). A new lithological interpretation has been...interpretation have been presented previously (Herron & Herron 1996). This paper provides a brief introduction...single, inducedneutron gamma ray spectrometer (Herron 1995) is an adaptation of a geochemical oxides |  | | Journal (article/letter/editorial) | | fraction is probably caused by chemical weathering of feldspar. Mineral sorting during ļ¬uvial transportation...correlated with major element (Si, Al, Fe, Mn and K) concentrations indicating that the abundance of trace...that Si, Na, Zr, Ba and Sr, mainly derived from feldspar, muscovite and biotite, are lost during weathering...(55%), rock fragments (19%), muscovite (15%), K-feldspar (8%), biotite (2%) and plagioclase (1%). Relative...chemical analysis, Al, Si, Ti, Fe, Mn, Mg, Ca, Na, K and P were determined in all samples. Trace elements |  | | Report (chapter) | | methods and the problem of compositional colinearity P. K. Harvey and M. A. Lovell Geological Society, London...methods and the problem of compositional colinearity P. K. H A R V E Y & M. A. L O V E L L Borehole Research...measures absolute abundances of Si, A1, Ti, Fe, Ca, K, S, the minor elements Gd, Th and U together with...to provide geochemically derived lithology logs (Herron 1988). The conversion of the geochemical data to...this type. This approach is also employed by Herron & Herron (1990) in the context of geochemical logging |  | FADIPE, O. A., CAREY, P. F., AKINLUA, A., ADEKOLA, S. A. (2011) PROVENANCE, DIAGENESIS AND RESERVOIR QUALITY OF THE LOWER CRETACEOUS SANDSTONE OF THE ORANGE BASIN, SOUTH AFRICA. South African Journal of Geology, 114 (3) 433-448 doi:10.2113/gssajg.114.3-4.433 | Journal (article/letter/editorial) | | have a detrital mineralogy dominated by quartz, K-feldspar and mica and range from greywacke to litharenites...litharenites. Diagenetic modifications include feldspar and lithic fragment dissolution, compaction and reduction...indicates a composition dominated by detrital quartz, feldspar (plagioclase and microcline) and mica (Figure...sediment texture (Rushdi et al., 2000). Plagioclase feldspar (Figure 3e) is readily quantified in the samples...(chlorite, illite) and cements (quartz overgrowths, K-feldspar and kaolinite) while HR-TEM confirms the presence |  | | Report (chapter) | | from Upper Carboniferous fluvio-deltaic systems, County Clare, Ireland S. J. Davies and T. Elliott Geological...from Upper Carboniferous fluvio-deltaic systems, County Clare, Ireland S. J. D A V I E S & T. E L L I O...with greater confidence if spectral gamma ray data (K, U, Th and their respective ratios) are used in conjunction...consistently low total counts (40-50cps) and high Th/K ratios (> 6). Laterally correlative interfluves are...data by their anomalously low K content (< 0.4%) and exceptionally high Th/K ratio (> 17). Finally, the |  | | Journal (article/letter/editorial) | | concentrations. Chemical index of alteration and AāCNāK ternary plot indicate moderate to strong chemical...exposed along major river sections as well as in the mineācut sections of numerous open pit coal mines, which...analytical system was cali- inantly quartz and feldspar, with rock fragments and mica. Significant brated...rock volume. are locally present (Figure 2c). Feldspar is represented by microcline (Figure 2d) with...Squeezing and bending of mica grains in mica, and feldspar. Quartz grains dominate the framework grains with |  | | Journal (article/letter/editorial) | | anthropogenic contamination in the sediments. A-CN-K ternary plot suggests total alteration of plagioclase...plot shows that all the samples plot close to the feldspar apex indicating higher abundance of feldspars...suggesting low fractionation of the plagioclase feldspar. Thus, the major, trace and rare earth elements...and log(FeO/K2O) vs. log(SiO2/Al2O3) following Herron (1988) plots (Figs. 3a, 3b) most of samples occupy...to evaluate the chemical weathering trend is AāCNāK ternary plot (Nesbitt and Young, 1984; Nesbitt, 2003) |  | | Journal (article/letter/editorial) | | the Colville Igneous Complex, NE Washington State, USA GEORGE A. MORRIS1ā, PETER B. LARSON2 AND PETER R...WASHINGTON STATE UNIVERSITY, PULLMAN, WA 99164-2812, USA RECEIVED JUNE 24, 1998; REVISED TYPESCRIPT ACCEPTED...early Cenozoic igneous rocks in the southwestern USA that involved the gradual shallowing of the angle...for early Eocene igneous rocks in the northwestern USA (e.g. Ewing, 1980; Coney, 1987). Recent work has...monzonites, monzogranites and granites of the Herron Creek Suite (upper SVF) (Holder, 1990); and the |  | Kesler, S. E., Sutter, J. F., Issigonis, M. J., Jones, L. M., Walker, R. L. (1977) Evolution of porphyry copper mineralization in an oceanic island arc; Panama. Economic Geology, 72 (6) 1142-1153 doi:10.2113/gsecongeo.72.6.1142 | Journal (article/letter/editorial) | | al. (1975). K-Ar PORPHYRY COPPÅRMLVÅRALIZATION,PANAMA 1143 analyseswere done in the K/Ar Laboratory...mineralabundances (Qz-quartz,Pl-plagioclase, 1(f-K-feldspar,Hb-Hornblende,Bi-biotite,Px-pyroxene, Mgmagnetite...(1975) haveshown cappedlocally by basalt flows. K-Ar radiometric age determinations done by N.J. Snelling...5---+ 0.6 m.y. on a basalticwhole rock sample(0.676% K, rad. ā¢ĆøAr that individual intrusions must be distinguishedby...2, Fig. 1); (2) 12.6---+ 0.8 m.y.onbiotite(6.445 K, modal compositions modal compositional trends for |  | | Journal (article/letter/editorial) | | nine elemental maps were acquired in two passes (Ca, K, Fe, Na, Al and Ti, Mn, Mg, Si). Data processing and...named phengite. Moreover, various samples contain K feldspar, and, in Fi-5p, paragonite, amphibole and garnet...according 0.20 Kln phengite. āā 0.19 samples contain 0.20 K feldtheir b Fi-4p parameter, we have named Moreover...between Fe + Mg (phengitization parameter) and Na/Na + K (paragonitization parameter) ratios (Figure 7). In...between Fe + Mg (phengitization parameter) and Na/Na + K (paragonitization parameter) ratios (Figure 7). In |  | Bastia, Fakira, Equeenuddin, Sk Md., Roy, Priyadarsi D., HernĆ”ndezāMendiola, Ernesto (2020) Geochemical signatures of surface sediments from the Mahanadi river basin (India): Chemical weathering, provenance, and tectonic settings. Geological Journal, 55 (7). 5294-5307 doi:10.1002/gj.3746 | Journal (article/letter/editorial) | | Pb, Ba, Cr, Zn, U, Th, net, sillimanite, and feldspar with magnetite, ilmenite, rutile, sphene, and...of quartz, feldspar, illite, kaolinite, and chlorite. The shale contains quartz, feldspar, dolomite,...DISCUSSION tite. The sandstone consists of quartz, feldspar, and glauconite. Wani (2008) reported average...compared with UCC (Table 1 76.70 less plagioclase (Herron, 1988; Pettijohn, Potter, & Siever, 1972). 3....0.20), however, reflect the presence of more K-feldspar and 0.69 Markovics, & Price, 1980) and mineralogical |  | | Report (chapter) | | mineralogical analysis B. H U M P H R E Y S A N D G. K. L O T T 1 Stratigraphy and Sedimentology Research...Tartan Fields, North Sea, are used as case examples. K-feldspars, micas, detrital clays (illite, and possibly...University Library on May 27, 2015 224 B. HUMPHREYS & G. K. LOTT Methods of mineralogical analysis To attempt...including detrital clays, siltsized quartz and feldspar grains and a varied suite of cements. It is also...kaolinite, siderite cement and quartz silt (with minor feldspar), an attempt has been made to quantify mineral |  | | Journal (article/letter/editorial) | | subsequent deposits. Glauconitization of detrital Kāfeldspars, clay peloids, and volcanic lithic fragments...of Glauconitic Sandstone Kāfeldspar and clay peloids are commonly observed. Kāfeldspars have FIGURE 3...mainly fine polycrystalline quartz and alkali feldspar (with some containing quartzose, ferruginous...grains squeezed into the intergranular spaces, Kāfeldspar, minor plagioclase, abundant clay peloids, glauconitic...glauconitization of detrital Kāfeldspars is quartz, clouded and angular feldspar, and devitrified glassy |  | | Report (chapter) | | and pore fluid necessary for illitization and feldspar alteration than in mudstones. The significance...derived from the dissolution or alteration of K-feldspar or muscovite (Hower et al. 1976). Differences...addition, they were stained with Alizarin Red S and K-ferricyanide to aid carbonate mineral detection. To...quartz, feldspar, limestone, dolomite and some ductile lithic grains. The feldspars are mostly K-feldspars...sample 2620.5 m predominantly composed of quartz, feldspar and calcite (red) grains. The calcite grains dissolve |  | | Report (issue) | | STATE GEORGIA DIVISION OF CONSERVATION DEPARTMENT OF MINES, MINING AND GEOLOGY A. S. Furcron, Director...Bulletin Number 79 ANNOTATED BIBLIOGRAPHY OF GEORGIA GEOLOGY THROUGH 1959 by Howard Ross Cramer, Arthur...James George Lester Emory University, Atlanta, Georgia ATLANTA 1967 LETTER OF TRANSMITTAL Department...Governor of Georgia and Commissioner Ex-Officio State Division of Conservation Atlanta, Georgia 30334 Dear...and Geology entitled, "Annotated Bibliography of Georgia Geology Through 1959," by Drs. Howard R. Cramer |  | | Journal (article/letter/editorial) | | 53) are low, which was considered to be affected by K-metasomatism, whereas the high CIW (82, Chemical Index...polycrystalline quartz (65ā70%), alkaline feldspar (10ā15% and mostly K-feldspar and microcline), detrial grains...observations, according to which K-feldspar dominates over plagioclase feldspar. The Fig. 3. UCC normalized...Using the geochemical classiļ¬cation diagram of Herron (1988), the Shijia sandstones are classiļ¬ed as...classiļ¬cation of the Shijia sandstones (ļ¬elds after Herron, 1988). 256 L. Sun et al. / Chemie der Erde |  | Wang, Shengdong, Deng, Xiaohong, Dai, Peng, Wu, Junjie, Zhang, Jie, Zhang, Quan, Wang, Zhong (2020) Geochemistry and mineralogy of Quaternary sediments in the northern Bohai Bay Basin, North China: implications for provenance and climate change. Canadian Journal of Earth Sciences, 57 (3) 396-406 doi:10.1139/cjes-2018-0213 | Journal (article/letter/editorial) | | lithophile elements are slightly enriched, and 23 Rb and K are close to those of PAAS; most high field strength...34 27 sediments are quartz, plagioclase and K-feldspar. The geochemistry and mineralogy 28 of the...125 northernmost region of the LG Sag near Gu'an County (39Ā°26ā²45ā³Nļ¼116Ā°15ā²18ā³E) 126 (Fig. 1c). Paleomagnetic...log(Na2O/K2O) classification diagram (after 233 (Herron 1988)), the majority of the samples plot in the...shale (PAAS). The concentrations 241 of Rb and K are close to those of PAAS (values after McLennan |  | | Journal (article/letter/editorial) | | poorly sorted quartz, sericitized and kaolinitized feldspar, and mica grains cemented by iron oxide (Figure...altered feldspar and silicified fine-grained matrix (Figure 3d,e). The upper and carbonatized feldspar, quartz...XPL photomicrograph of the poorly sorted quartz, feldspar, and mica grains bounded (d,e) XPL photomicrograph...photomicrograph of the poorly sorted quartz, feldspar, and mica grains bounded by by iron oxide in the subarkosic-to-quartz...Limestone; (g) XPL photomicrograph of the calcite with feldspar, mica, and volcanic rock Limestone; XPLsandy photomicrograph |  | | Journal (article/letter/editorial) | | Murugan1,2,3 | Balakrishnan Srinivasan2 | Jayant K. Tripathi1 1 School of Environmental Sciences, Jawaharlal...younger sedimentary formations are enriched in Na, K, Rb, and Sr. REE, U, and Th abundances of these two...Honnali dome (Figure 1b) and mainly consists of feldspar defining the c-fabric. Some Fe-rich opaque minerals...KMV-10A KMV-10B KMV-11 KMV-12 KMV-13 1.5 log(FeO3 /K 2O) 2 1.0 Shale Wa c ite en ar -0.5 -1.0 0.0...bl it ha Su re n ite bar k th Li wa ey Gr 0.0 2 2 Log(Na O/K O) ck ite e 0.5 -1.0 (b) |
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