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Journal articles on the topic 'Perthite'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

NAKANO, Satoshi. "Alkali Feldspar: Perthite Problems." Journal of the Mineralogical Society of Japan 21, no. 3 (1992): 161–73. http://dx.doi.org/10.2465/gkk1952.21.161.

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2

Bhattacharyya, Sudip, and P. Sengupta. "Modelling of dissolution–reprecipitation ion-exchange reactions for the development of flame perthite in a suite of sheared alkaline rocks: an example from Chimakurthy, Eastern Ghats, India." Mineralogical Magazine 78, no. 5 (2014): 1301–23. http://dx.doi.org/10.1180/minmag.2014.078.5.14.

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AbstractA suite of sheared syenites occurring along the western margin of the Eastern Ghats Belt, India have developed extensive flame perthite in K-feldspar. Albite flames show large variation in size, shape and abundance. Field, petrographic and chemical evidence suggests complex interplay between differential stress, recycling of K-Na-Ca and supply of Na by infiltration for the development of flame perthite. Partial replacement of pyroxenes, plagioclase and alkali feldspar by amphibole, biotite, nepheline and calcite causes internal recycling of Na-Ca-K in a closed system. Representative co

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3

Lee, Martin R., and Ian Parsons. "Diffusion-controlled and replacement microtextures in alkali feldspars from two pegmatites: Perth, Ontario and Keystone, South Dakota." Mineralogical Magazine 79, no. 7 (2015): 1711–35. http://dx.doi.org/10.1180/minmag.2015.079.7.21.

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AbstractMacro- and micro-perthitic microclines from pegmatites from Perth, Ontario (Wards catalogue 46 E 0510) and Keystone, South Dakota (Wards 46 E 5125) have been studied using light and electron microscopy. A sample of the type perthite from Perth, Ontario (Hunterian Museum, Glasgow, M2361)was compared using light microscopy. It differs in bulk composition and microtexture from the Wards sample. The Perth sample from Wards is a mesoperthite, with sub-periodic ∼mm-thick albite veins near (100), with irregular surfaces. The microcline has regular tartan twins and formed fromorthoclase by a c

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4

Lee, Martin R., Kim A. Waldron, and Ian Parsons. "Exsolution and alteration microtextures in alkali feldspar phenocrysts from the Shap granite." Mineralogical Magazine 59, no. 394 (1995): 63–78. http://dx.doi.org/10.1180/minmag.1995.59.394.06.

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AbstractAlkali feldspar phenocrysts (bulk composition Or75.0Ab24.6An0.4) in the subsolvus Shap granite comprise a fine-scale mixture of subregular pristine crypto- and micro-perthites with altered, micropore-rich feldspar with irregular microstructures. The regular perthites are strain-controlled intergrowths of Albite and/or Periclinetwinned albite exsolution lamellae within tweed orthoclase. The microperthites formed at ⩽ 590°C by heterogeneous nucleation of thin albite films which coarsened to > 1 µm length. Cryptoperthites developed at < 400°C by homogeneous nucleation of sub-µm long

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5

Soliman, C. "Thermoluminescence of the blue emission band of perthite." Radiation Effects and Defects in Solids 159, no. 2 (2004): 107–14. http://dx.doi.org/10.1080/01411590310001637026.

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6

Brooks, C. K. "New occurrences of undersaturated syenites from the southern Blosseville Coast, East Greenland." Bulletin of the Geological Society of Denmark 38 (February 18, 1991): 153–59. http://dx.doi.org/10.37570/bgsd-1990-38-14.

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This note reports hitherto undescribed nepheline-sodalite syenites from I. C. Jacobsen Fjord and Ryberg Fjord. Numerous syenite erratics have been encountered at I. C. Jacobsen Fjord. They are believed to come from a single intrusion in the immediate neighbourhood which has not yet been located. They consist Iargely of perthite with nepheline, sodalite, salitic pyroxene, hastingsitic amphibole, sphene and Fe-Ti oxide. They resemble the pulaskites of the Kangerdlugssuaq intrusion. On the side of the Sorgenfri Gletscher at the head of Ryberg Fjord an extensive area of peralkaline syenite has bee

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7

Prasad, G., and K. V. Rao. "Dielectric properties and thermal expansion of perthite single crystals." Journal of Materials Science Letters 9, no. 10 (1990): 1200–1202. http://dx.doi.org/10.1007/bf00721891.

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8

Prasad, G., and K. V. Rao. "Study of X-ray-induced defects in perthite crystals." Journal of Materials Science Letters 10, no. 22 (1991): 1312–14. http://dx.doi.org/10.1007/bf00722645.

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9

Vernon, R. H. "Flame perthite in metapelitic gneisses at Cooma, SE Australia." American Mineralogist 84, no. 11-12 (1999): 1760–65. http://dx.doi.org/10.2138/am-1999-11-1205.

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10

Kontonikas-Charos, Alkis, Cristiana L. Ciobanu, Nigel J. Cook, et al. "Feldspar mineralogy and rare-earth element (re)mobilization in iron-oxide copper gold systems from South Australia: a nanoscale study." Mineralogical Magazine 82, S1 (2018): S173—S197. http://dx.doi.org/10.1180/minmag.2017.081.040.

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ABSTRACTNanoscale characterization (TEM on FIB-SEM-prepared foils) was undertaken on feldspars undergoing transformation from early post-magmatic (deuteric) to hydrothermal stages in granites hosting the Olympic Dam Cu-U-Au-Ag deposit, and from the Cu-Au skarn at Hillside within the same iron-oxide copper-gold (IOCG) province, South Australia. These include complex perthitic textures, anomalously Ba-, Fe-, or REE-rich compositions, and REE-flourocarbonate + molybdenite assemblages which pseudomorph pre-existing feldspars. Epitaxial orientations between cryptoperthite (magmatic), patch perthite

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11

Cohen, Boaz, Its'Hak Dinstein, and Moshe Eyal. "A system for computerized classification of color textured perthite images." Pattern Recognition 30, no. 9 (1997): 1533–45. http://dx.doi.org/10.1016/s0031-3203(96)00171-9.

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12

Goble, R. J., S. B. Treves, and V. M. Murray. "Cretaceous intrusions in the Commerce Mountain and adjacent areas of southeastern British Columbia and southwestern Alberta." Canadian Journal of Earth Sciences 36, no. 12 (1999): 1939–56. http://dx.doi.org/10.1139/e99-082.

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An older oversaturated monzonitic and a younger undersaturated syenitic suite of Cretaceous igneous rocks are present at Commerce Mountain and adjacent areas of the southern Canadian Rockies. The undersaturated suite consists of foid-bearing alkali feldspar syenite and trachyte, with lesser amounts of phonolite and foid syenite. Normative data indicate a higher degree of undersaturation attributable to the presence of garnet. Sr and Nd isotopic data are consistent with generation of the magma by partial melting of an enriched source in the upper mantle or the lower continental crust; Pb isotop

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13

PRYER, L. L., and P. ‐Y F. ROBIN. "Retrograde metamorphic reactions in deforming granites and the origin of flame perthite." Journal of Metamorphic Geology 13, no. 6 (1995): 645–58. http://dx.doi.org/10.1111/j.1525-1314.1995.tb00249.x.

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14

Walker, F. David L., Martin R. Lee, and Ian Parsons. "Micropores and micropermeable texture in alkali feldspars: geochemical and geophysical implications." Mineralogical Magazine 59, no. 396 (1995): 505–34. http://dx.doi.org/10.1180/minmag.1995.059.396.12.

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AbstractScanning Electron Microscopy and Transmission Electron Microscopy show that normal, slightly turbid alkali feldspars from many plutonic rocks contain high concentrations of micropores, from ∼1 µm to a few nm in length, typically 0.1 µm. There may be 109 pores mm−3 and porosities as high as 4.75 vol.% have been observed, although ∼1% is typical. Only ‘pristine’ feldspars, which are dark coloured when seen in the massive rock, such as in larvikite and some rapakivi granites, are almost devoid of pores. Weathering enlarges prexisting pores and exploits sub-regularly spaced edge dislocatio

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15

Abart, Rainer, Elena Petrishcheva, Stefan Käßner, and Ralf Milke. "Perthite microstructure in magmatic alkali feldspar with oscillatory zoning; Weinsberg Granite, Upper Austria." Mineralogy and Petrology 97, no. 3-4 (2009): 251–63. http://dx.doi.org/10.1007/s00710-009-0090-1.

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16

Norberg, N., D. Harlov, G. Neusser, R. Wirth, D. Rhede, and L. Morales. "Experimental development of patch perthite from synthetic cryptoperthite: Microstructural evolution and chemical re-equilibration." American Mineralogist 98, no. 8-9 (2013): 1429–41. http://dx.doi.org/10.2138/am.2013.4412.

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17

Abart, R., E. Petrishcheva, R. Wirth, and D. Rhede. "Exsolution by spinodal decomposition II: Perthite formation during slow cooling of anatexites from Ngoronghoro, Tanzania." American Journal of Science 309, no. 6 (2009): 450–75. http://dx.doi.org/10.2475/06.2009.02.

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18

Pryer, L. L., and P. Y. F. Robin. "Differential stress control on the growth and orientation of flame perthite: A palaeostress-direction indicator." Journal of Structural Geology 18, no. 9 (1996): 1151–66. http://dx.doi.org/10.1016/0191-8141(96)00037-5.

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19

Kiselev, Alexei A., Alice Keinert, Tilia Gaedeke, et al. "Effect of chemically induced fracturing on the ice nucleation activity of alkali feldspar." Atmospheric Chemistry and Physics 21, no. 15 (2021): 11801–14. http://dx.doi.org/10.5194/acp-21-11801-2021.

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Abstract. Feldspar is an important constituent of airborne mineral dust. Some alkali feldspars exhibit particularly high ice nucleation (IN) activity. This has been related to structural similarities of the ice (101‾0) prism planes and the (100) planes of alkali feldspar. Here the effect of generating feldspar surfaces with close to (100) orientation by means of chemically induced fracturing on the IN activity of alkali feldspar was investigated experimentally. To this end, gem-quality K-rich alkali feldspar was shifted towards more Na-rich compositions by cation exchange with an NaCl–KCl salt

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20

Du, Shuheng, Yapu Zhao, Jun Jin, Gen Kou, Yongmin Shi, and Xianfu Huang. "Significance of the secondary pores in perthite for oil storage and flow in tight sandstone reservoir." Marine and Petroleum Geology 110 (December 2019): 178–88. http://dx.doi.org/10.1016/j.marpetgeo.2019.07.006.

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21

Burgess, R., S. P. Kelley, I. Parsons, F. D. L. Walker, and R. H. Worden. "40Ar39Ar analysis of perthite microtextures and fluid inclusions in alkali feldspars from the Klokken syenite, South Greenland." Earth and Planetary Science Letters 109, no. 1-2 (1992): 147–67. http://dx.doi.org/10.1016/0012-821x(92)90080-f.

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22

Perna, Maria, Daria Zaccaria, Gianluigi Rosatelli, et al. "Dissolution-Repackaging of Hellandite-(Ce), Mottanaite-(Ce)/Ferri-Mottanaite-(Ce)." Minerals 11, no. 6 (2021): 610. http://dx.doi.org/10.3390/min11060610.

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We investigated hellandite-group mineral phases from the Roman Region, alkali syenite ejecta, by multimethod analyses. They show a complex crystallisation history including co-precipitation of hellandite-(Ce) with brockite, resorption, sub-solidus substitution with mottanaite-(Ce), exsolution of perthite-like ferri-mottanaite-(Ce), overgrowth of an oscillatory-zoned euhedral shell of ferri-mottanaite-(Ce) and late, secondary precipitation of pyrochlore in the cribrose hellandite-(Ce) core. LREE/HREE crossover and a negative Eu anomaly in hellandite-group minerals follows fO2 increase during ma

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23

DU, Shuheng, Guoxin SHI, Xinjian YUE, Gen KOU, Bo ZHOU, and Yongmin SHI. "Imaging‐Based Characterization of Perthite in the Upper Triassic Yanchang Formation Tight Sandstone of the Ordos Basin, China." Acta Geologica Sinica - English Edition 93, no. 2 (2019): 373–85. http://dx.doi.org/10.1111/1755-6724.13768.

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24

PRAKASH, D., and I. N. SHARMA. "Metamorphic evolution of the Karimnagar granulite terrane, Eastern Dharwar Craton, south India." Geological Magazine 148, no. 1 (2010): 112–32. http://dx.doi.org/10.1017/s0016756810000488.

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AbstractThe Karimnagar granulite terrane is an integral part of the Eastern Dharwar Craton (EDC), India, having been the subject of much interest because of the only reported granulite facies rocks in the EDC. It shows a large variety of rock types with a wide range of mineral parageneses and chemical compositions, namely charnockites (Opx+Pl+perthite+Qtz±Bt±Grt), gneisses (Opx+Crd+Bt+Pl+Qtz+perthite±Sil±Grt±Spl; Bt+Qtz+Pl±Crd±Hbl±Spl), mafic granulites (Cpx+Pl+Qtz±Opx±Hbl), quartz-free granulites (Spr+Spl+Bt+Crd+Kfs+Crn; Bt+Crd+Kfs±Crn±Spl±Krn; And+Bt+Kfs+Chl), granites (Qtz+Pl+Kfs±Bt±Hbl), a

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25

Aykol, A., and S. Tokel. "The geochemistry and tectonic setting of the Demirköy pluton of the Srednogorie–Istranca granitoid chain, NW Turkey." Mineralogical Magazine 55, no. 379 (1991): 249–56. http://dx.doi.org/10.1180/minmag.1991.055.379.13.

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AbstractThe chain of Late Subhercynian granitoids can be traced along the Srednogorie-Istranca-Pontid belt. The Demirköy pluton outcrops in the Istranca segment. The rocks of the pluton range from diorite through grandiorite to perthite granite with granodiorite predominating. On the basis of 25 chemical analyses, the intrusive setting of the granitoid has been investigated. Calcic to calc-alkaline and peraluminous to metaluminous character indicate a subduction-related origin. Low to moderate concentrations of the large-ion lithophiles (LIL), high field strength elements (HFS), light rare ear

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26

Waldron, Kim, Ian Parsons, and William L. Brown. "Solution-redeposition and the orthoclase-microcline transformation: evidence from granulites and relevance to 18O exchange." Mineralogical Magazine 57, no. 389 (1993): 687–95. http://dx.doi.org/10.1180/minmag.1993.057.389.13.

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AbstractThe Or-rich part of optically blebby to lamellar mesoperthite crystals from an Adirondack granulite has been shown by TEM to be a lamellar cryptoperthite, composed dominantly of tweed orthoclase. A fluid-absent, two-stage thermal history is proposed to explain the coarse and fine textures, with the cryptoperthite forming by coherent exsolution below ∼350°C probably during uplift. The mechanism was most probably homogeneous coherent nucleation rather than spinodal decomposition. However, cutting the orthoclase cryptoperthite are thin (<1 μm) seams of tartan microcline with sharp boun

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27

Bolarinwa, Anthony Temidayo, and Adewole John Adeola. "Geochemistry of Weathered Profiles over Syenite and Younger Granite in Pankshin Area, North Central Nigeria." Earth Science Research 6, no. 1 (2016): 63. http://dx.doi.org/10.5539/esr.v6n1p63.

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Metallic ores of economic values often occur within profiles above basement rocks in tropical regions due to weathering and secondary enrichment. This study is carried out to determine the geochemistry and appraise the potential for metallic ore enrichment in the weathered profiles over Syenite and Younger Granite in Pankshin area. Top-soil, laterite and rock samples are collected from two lateritic profiles above Syenite and Younger Granite. The syenite rock is composed of alkali feldspars (perthite), nepheline, clinopyroxene, with minor amount of orthopyroxene, hornblende, plagioclase and fe

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28

Zhang, Ye, Mingchao Li, Shuai Han, Qiubing Ren, and Jonathan Shi. "Intelligent Identification for Rock-Mineral Microscopic Images Using Ensemble Machine Learning Algorithms." Sensors 19, no. 18 (2019): 3914. http://dx.doi.org/10.3390/s19183914.

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It is significant to identify rock-mineral microscopic images in geological engineering. The task of microscopic mineral image identification, which is often conducted in the lab, is tedious and time-consuming. Deep learning and convolutional neural networks (CNNs) provide a method to analyze mineral microscopic images efficiently and smartly. In this research, the transfer learning model of mineral microscopic images is established based on Inception-v3 architecture. The four mineral image features, including K-feldspar (Kf), perthite (Pe), plagioclase (Pl), and quartz (Qz or Q), are extracte

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29

Everett, S. A., L. K. Folkes, P. Wardman, and K. D. Asmus. "Free-Radical Repair by a Novel Perthiol: Reversible Hydrogen Transfer and Perthiyl Radical Formation." Free Radical Research 20, no. 6 (1994): 387–400. http://dx.doi.org/10.3109/10715769409145638.

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30

Strmić Palinkaš, Palinkaš, Neubauer, Scholz, Šoštarić, and Bermanec. "Formation Conditions and 40Ar/39Ar Age of the Gem-Bearing Boqueirão Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil." Minerals 9, no. 4 (2019): 233. http://dx.doi.org/10.3390/min9040233.

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The Boqueirão granitic pegmatite, alias Alto da Cabeça pegmatite, is situated in Borborema Pegmatitic Province (BPP) in Northeast Brazil. This pegmatitic province hosts globally important reserves of tantalum and beryllium, as well as significant quantities of gemstones, including aquamarine, morganite, and the high-quality turquoise-blue “Paraíba Elbaite”. The studied lithium-cesium-tantalum Boqueirão granitic pegmatite intruded meta-conglomerates of the Equador Formation during the late Cambrian (502.1 ± 5.8 Ma; 40Ar/39Ar plateau age of muscovite). The pegmatite exhibits a typical zonal mine

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31

Weaver, S. D., C. J. Adams, R. J. Pankhurst, and I. L. Gibson. "Granites of Edward VII Peninsula, Marie Byrd Land: anorogenic magmatism related to Antarctic-New Zealand rifting." Earth and Environmental Science Transactions of the Royal Society of Edinburgh 83, no. 1-2 (1992): 281–90. http://dx.doi.org/10.1017/s0263593300007963.

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ABSTRACTSyenogranites and monzogranites of Edward VII Peninsula, Marie Byrd Land, represent magmatism associated with continental rifting and the separation of New Zealand from W Antarctica in the mid-Cretaceous. These coarse-grained, leucocratic, subsolvus biotite granites occur as five small plutons cutting Lower Palaeozoic metasediments. Petrographic features include the predominance of microcline perthite over albite, bipyramidal smoky quartz, red-brown biotite and accessory ilmenite, zircon, apatite, monazite and fluorite. Enclaves are absent and miarolitic cavites are rare.The granites a

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32

Oberti, Roberta, Massimo Boiocchi, Frank C. Hawthorne, Neil A. Ball, and Robert F. Martin. "Ferri-fluoro-katophorite from Bear Lake diggings, Bancroft area, Ontario, Canada: a new species of amphibole, ideally Na(NaCa)(Mg4Fe3+)(Si7Al)O22F2." Mineralogical Magazine 83, no. 03 (2018): 413–17. http://dx.doi.org/10.1180/mgm.2018.130.

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AbstractFerri-fluoro-katophorite is the second species characterised involving the rootname katophorite in the sodium–calcium subgroup of the amphibole supergroup. The mineral and its name were approved by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification, IMA2015-096. It was found in the Bear Lake diggings, Bancroft area, Ontario, Canada, where coarse euhedral crystals of amphibole, phlogopite, sanidine solid-solution (now coarsely exsolved to microcline perthite), titanite, augite, zircon and fluorapatite crystallised from a low-viscosity

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33

Dawson, J. B., and R. W. Hinton. "Trace-element content and partitioning in calcite, dolomite and apatite in carbonatite, Phalaborwa, South Africa." Mineralogical Magazine 67, no. 5 (2003): 921–30. http://dx.doi.org/10.1180/0026461036750151.

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AbstractA carbonatite sample from Phalaborwa, South Africa, consists of apatite, magnetite and a calcitedolomite ‘perthite’ which is interpreted as being due to exsolution of dolomite from a high-Mg calcite precursor. Carbon and oxygen isotope data indicate that the carbonates are equilibrated. In situ ionmicroprobe analyses for Fe, Mn, Na, Si, Y, the REEs, Pb, Th and U give the following average concentrations (in ppm) in the sequence apatite, calcite, dolomite: Fe 98, 1680, 8190; Mn 61, 510, 615; Na 1171, 627, 125; Si 368; 1.6, 0.2; Sr 4447, 5418, 2393; Ba 37, 2189, 75; La 1245, 300, 67; Y 1

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Sandeman, Hamish A., and John Malpas. "Epizonal I- and A-type granites and associated ash-flow tuffs, Fogo Island, northeast Newfoundland." Canadian Journal of Earth Sciences 32, no. 11 (1995): 1835–44. http://dx.doi.org/10.1139/e95-141.

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Magmatic activity of Silurian–Devonian age is widespread in the Appalachian–Caledonian Orogen. A marked characteristic of this magmatism is the composite nature of the igneous suites, which range from peridotite to granodiorite in single plutonic bodies. The origin of these suites is still enigmatic, and the assumption that all are the same not proven. Such a suite of intrusive rocks, ranging in composition from minor peridotite to granodiorite, intrudes an openly folded sequence of Silurian volcanogenic sandstones and ash-flow tuffs on Fogo Island, northeast Newfoundland. Two units, the Roger

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REYES, CRISTINA NANCY. "Geotermobarometria y Quimica Mineral del Pluton Sienito "Pajeú" Serra Talhada, Pernambuco, NE de Brasil." Pesquisas em Geociências 25, no. 1 (1998): 61. http://dx.doi.org/10.22456/1807-9806.21174.

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The Pajeu Syenitic Complex, Serra Talhada, Pernambuco province, northeastern Brazil is tectonically emplaced within the framework of Neoproterozoic (Brasiliano). In the present work were studied whole rock and specific mineral chemical data (85’24” – 816’31” S and 3819’8” – 3836’2” W). Two distinct petrographic facies have been identified. The predominant porphyritic syenite facies is characterized by perthite microcline megacrysts (up to 8 cm long) and fine grained syenite; both facies have distributed melanocratic microgranular enclaves of syenitic composition. The mineral assemblage compris

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36

YU, SHENG-YAO, JIAN-XIN ZHANG, XI-LIN ZHAO, JIANG-HUA GONG, and YUN-SHUAI LI. "Geochronology, geochemistry and petrogenesis of the late Palaeoproterozoic A-type granites from the Dunhuang block, SE Tarim Craton, China: implications for the break-up of the Columbia supercontinent." Geological Magazine 151, no. 4 (2013): 629–48. http://dx.doi.org/10.1017/s0016756813000538.

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AbstractThe discovery ofc. 1.77 Ga A-type granite in the Tarim Craton (TC) provides the first evidence that supports an extensional event related to fragmentation of the Columbia supercontinent in the late Palaeoproterozoic. We present laser-ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) zircon U–Pb ages, Lu–Hf isotopic data and the whole-rock geochemical and Nd isotopic data of A-type granites in the Dunhuang area in the SE Tarim Craton. Zircon U–Pb dating for three granite samples indicate that they were emplaced atc. 1.77 Ga. Zircons from these granites have εHf(t) values

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37

Hawari, J. A., D. Griller, and F. P. Lossing. "Thermochemistry of perthiyl radicals." Journal of the American Chemical Society 108, no. 12 (1986): 3273–75. http://dx.doi.org/10.1021/ja00272a021.

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38

Kontak, Daniel J., Kevin Ansdell, Jaroslav Dostal, Werner Halter, Robert Martin, and Anthony E. Williams-Jones. "The nature and origin of pegmatites in a fluorine-rich leucogranite, East Kemptville Tin Deposit, Nova Scotia, Canada." Transactions of the Royal Society of Edinburgh: Earth Sciences 92, no. 2 (2001): 173–200. http://dx.doi.org/10.1017/s0263593300000122.

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ABSTRACTPegmatites at the East Kemptville Sn-Zn-Cu-Ag deposit occur within a F- and P-rich, 370 Ma topaz-muscovite leucogranite, the most evolved phase of the chemically zoned Davis Lake Pluton. Structural observations and geochronology indicate that the leucogranite intruded into an active shear/fault zone environment. Pegmatites are preferentially located near the roof zone of the intrusion and include: (1) quartz-feldspar pods (≤ 1–2 m) aligned parallel to a foliation in the leucogranite. Such pegmatites have marginal aplites or may be cored by aplites; (2) aplite-pegmatite zones with well-

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PANOV, E. YU. "ON EXISTENCE AND UNIQUENESS OF ENTROPY SOLUTIONS TO THE CAUCHY PROBLEM FOR A CONSERVATION LAW WITH DISCONTINUOUS FLUX." Journal of Hyperbolic Differential Equations 06, no. 03 (2009): 525–48. http://dx.doi.org/10.1142/s0219891609001915.

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We study the Cauchy problem for a conservation law with space discontinuous flux of generalized Audusse–Perthame form. It is shown that, after a change of unknown function, entropy solutions in the sense of Audusse–Perthame correspond to Kruzhkov's generalized entropy solutions for the transformed equation. This observation allows to use the Kruzhkov method of doubling variable (instead of rather complicated variant of this method invented by Audusse and Perthame). Applying this method for measure-valued solutions, we establish the uniqueness and the existence of entropy solutions to the probl

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West, Bruce J. "Benoît Perthame: Transport Equations in Biology." Journal of Statistical Physics 134, no. 3 (2009): 641–42. http://dx.doi.org/10.1007/s10955-009-9686-4.

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Cornell, D. H. "Lithostratigraphy of the Copperton Formation, Areachap Group." South African Journal of Geology 122, no. 4 (2019): 561–70. http://dx.doi.org/10.25131/sajg.122.0041.

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Abstract The type area of the Copperton Formation is on the farms Vogelstruisbult 104, Somuspan 105 and Dooniespan 108 in Prieska District. Outcrop is poor and the type material is preserved in exploration borehole cores from the Prieska Copper Mines and the Annex Cu-Zn deposits. It is highly deformed and variably metamorphosed. Thus it is a lithodemic unit, but interpreted as a supracrustal sequence and described as a formation including lithologically distinct members. The Copperton Formation comprises a wide range of rock types including metabasic and intermediate gneisses with minor amount

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Wang, X. L., A. G. Wintle, and G. Adamiec. "Post-IR IRSL production in perthitic feldspar." Radiation Measurements 64 (May 2014): 1–8. http://dx.doi.org/10.1016/j.radmeas.2014.03.006.

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Yu, Sul Hwa, Francesca Ercole, Nicholas A. Veldhuis, Michael R. Whittaker, Thomas P. Davis, and John F. Quinn. "Polymers with acyl-protected perthiol chain termini as convenient building blocks for doubly responsive H2S-donating nanoparticles." Polym. Chem. 8, no. 41 (2017): 6362–67. http://dx.doi.org/10.1039/c7py01484h.

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White, Joseph Clancy, and Christopher K. Mawer. "Dynamic recrystallization and associated exsolution in perthites: Evidence of deep crustal thrusting." Journal of Geophysical Research: Solid Earth 93, B1 (1988): 325–37. http://dx.doi.org/10.1029/jb093ib01p00325.

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Cole-Filipiak, Neil C., Mark Shapero, Courtney Haibach-Morris, and Daniel M. Neumark. "Production and Photodissociation of the Methyl Perthiyl Radical." Journal of Physical Chemistry A 120, no. 27 (2016): 4818–26. http://dx.doi.org/10.1021/acs.jpca.5b12284.

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Nichols, Bethan, Erin N. Sullivan, and Daniel M. Neumark. "Photodissociation dynamics of the tert-butyl perthiyl radical." Journal of Chemical Physics 152, no. 24 (2020): 244301. http://dx.doi.org/10.1063/5.0006913.

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Terryn, Hélène, Bernard Tilquin, and Chantal Houée-Levin. "Formation of perthiyl free radicals in irradiated glutathione." Research on Chemical Intermediates 31, no. 7-8 (2005): 727–36. http://dx.doi.org/10.1163/1568567054909041.

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Mazanec, Z. "NATURAL ENEMIES OF PERTHIDA GLYPHOPA COMMON (LEPIDOPTERA: INCURVARIIDAE)." Australian Journal of Entomology 26, no. 4 (1987): 303–8. http://dx.doi.org/10.1111/j.1440-6055.1987.tb01972.x.

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Knight, Roy C. "Corneille: Pompee to Pertharite." Seventeenth-Century French Studies 7, no. 1 (1985): 17–26. http://dx.doi.org/10.1179/026510685793649306.

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Lee, Martin R., and Ian Parsons. "Microtextural controls of weathering of perthitic alkali feldspars." Geochimica et Cosmochimica Acta 59, no. 21 (1995): 4465–88. http://dx.doi.org/10.1016/0016-7037(95)00255-x.

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