 | | Journal (article/letter/editorial) | | Planetary Physics, University of California, Los Angeles, California 90024 Mineral Parageneses in Franciscan...Franciscan Metamorphic Rocks, Panoche Pass, California Abstract: Approximately 33 square miles of Franciscan...Franciscan terrane near Panoche Pass in the Diablo Range of the central California Coast Ranges were mapped...system Ab-An-H2O suggest that metamorphism at Panoche Pass involved temperatures of about 200-300°C, lithostatic...melaclastic rocks Serpentinite Panoche Formation Quien Sabe Volcanics San Benito Gravels 880 881 883 883 884 |  | | Journal (article/letter/editorial) | | 87 99 The Laytonville Quarry (Mendocino County California) exotic block: iron-rich blueschist-facies...fault-bounded metabasites, the sediments ment of aegirine and garnet, followed by various phases of 'secondary'...this, and contemporaneous with the The ironstones pass sharply into underlying metadevelopment of the tremolite-talc...Situated 8 km south of Laytonville (Mendocino County, California), the exotic block, originally 40 m in diameter...Selected mets-lronstone mineral compositions, Panoehe Pass (PC) and Powers Quarr~ (PQ) Calderitic Vanadic- |  | | Report (issue) | | X-ray Powder Pattern: Laytonville district, California, USA. (ICDD 19-421). 9.03 (100), 3.01 (70), 2.64...36] 100.00 4.19 (1) Laytonville district, California, USA. (2) Do.; by electron microprobe. (3) Ambin...stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan siderite, ferroan...(Laytonville district, California, USA). Distribution: In the USA, in California, in the Laytonville quarry...Ward Creek, Cazadero, Sonoma Co.; and at Panoche Pass, San Benito Co.; in Oregon, at Wild Horse Lookout |  | | Report (issue) | | 589(4) X-ray Powder Pattern: Laytonville, California, USA. (ICDD 19-571). 9.18 (100), 7.91 (80), 3.25...(35) Chemistry: (1) Laytonville district, California, USA; analysis not given, stated 3+ to correspond...Franciscan Formation (Laytonville district, California, USA). Association: Deerite, zussmanite, stilpnomelane...stilpnomelane, spessartine, riebeckite, quartz, aegirine, grunerite, aragonite, manganoan siderite, ferroan...(Laytonville district, California, USA). Distribution: In the USA, in California, from the Laytonville |  | | Journal (article/letter/editorial) | | Agrell at the Laytonville Quarry, Mendocino County, California, and named as such in Agrell et al. (1965)...Mendocino Co., California (Agrell et al., I965) 2. Ward Creek, Cazadero, Sonoma Co., California (Coleman and...i966; unpubl.) 3. Panoche Pass, San Benito Co., California (Muir Wood, 1977) 4-Pacheco Pass, Santa Clara and...and Merced Cos., California (Muir Wood, 1977) 5- Covelo, Mendocino Co., California (Muir Wood, I977)...River, boundary of Sonoma with Mendocino Cos., California (Chesterman, unpubl.) 7- Powers Quarry, Coos |  | | Journal (article/letter/editorial) | | Mendocino County, California: Agrell et al. (1965). z. Ward Creek, Cazadero, Sonoma Co., California: Coleman...(i963). 3. Panoche Pass, San Benito Co., California: Ernst (1965). 4. Pacheco Pass, California: Ernst et...Flats, Mendocino Co., California: Agrell (unpuhl.). 6. Covelo, Mendocino Co., California: Muir Wood (I977)... Santa Clara County, California: Muir Wood (I977). 8. Wild Horse Lookout, Curry County, Oregon: Coleman...Coleman (I972). 9- Powers Quarry, Coos County, Oregon: Coleman (pers. comm.). Io. Finney Creek, Shuksan Unit |  | | Journal (article/letter/editorial) | | is replaced by the alternative higher density aegirine-talc assemblage; and (iv) glaucophane is stable...this paper were collected from localities in California, Oregon, Washington State, the Alps, and Greece...Mendocino Co., California--Chesterman (i966); Ward Creek, Cazadero, Sonoma Co., California--Coleman and...and Lee 0963); Panoche Pass, San Benito Co., Calif o r n i a - E r n s t (I965); Beauregard Creek (South...(South Fork), Santa Clara Co., California and Powers Quarry, Coos Co., Oregon--Muir Wood (I977); Shuksan, |  | | Journal (article/letter/editorial) | | Pyroxene shows homogeneous composition close to the aegirine end-member and blue amphibole is zoned from crossite...(Fig. 2A). The pyroxene is a xenoblastic greenish aegirine containing numerous inclusions of deerite, amphibole...‘schistes lustres’ (Fig. l), about 2 km west of San Andrea di Cotone (Caron et al., 1981). The rocks...relatively homogeneous, with compositions near the aegirine end-member (Table 2). Compositional variations...compositions. 3: amphibole rim composition. 4: aegirine composition 1 2 3 4 55.29 0.02 4.29 53.63 |  | | Journal (article/letter/editorial) | | Blueschist and Eclogite of the Franciscan Complex, California E.H. Brown and J.Y. Bradshaw* Department of Geology...Washington University, Bellingham, Washington 98225, USA Abstract. The phase relations of pyroxenes, amphiboles...mineral assemblages in the Franciscan Complex of California. Of special interest in this work are the metamorphic... Tiburon, Valley Ford, New Almaden, and Pacheco Pass areas (Fig. 1). It is also heavily dependent on...Amphibole, Franciscan Complex, California N EVADA LAYTO ECOP IOCHE PASS "~-"~ ~ ~ 0 % ~ 100 200 |  | | Report (chapter) | | Franciscan and Sanbagawa blueschist terranes of the California Coast Ranges and central Shikoku, respectively...this work: the Goat Mountain area at 1:10,000; the San LuisPacheco Páss area at about 1:18,300; and the... In situ metagraywackes of the extended Pacheco Pass area exhibit the following progressive metamorphic...METAMORPHISM IN CALIFORNIA AND JAPAN steeply dipping faults have been recognized in the San Luis FlatPacheco...FlatPacheco Pass area. The relationship between metamorphism and deformation is unclear; no evidence was found |  | | Journal (article/letter/editorial) | | + quartz_+ sodic amphibole. Sodic pyroxene of aegirine-jadeite composition occurs as pseudomorphs after...faults by the lawsonite zone blueschists, which pass with the development of sodic amphibole to fully...inclusions (Fig. 1). Such sodic pyroxenes are aegirine-jadeites with high acmite components ( > 40%,...P lattice omphacites (Clark and Papike 1968). Aegirine-jadeites and chloromelanites, on the other hand...is observed in the metabasites of the Panoche Pass, California (Ernst 1965, Fig. 2) and also in uralitised |  | | Journal (article/letter/editorial) | | Washington State College, Bellingham, Washington 98225, USA Abstract. Phase relations of pumpellyite, epidote...instead of albite the projection is unchanged. Aegirine and diopside components of pyroxene can be present...analysis (chlorite, CaCO3, amphibole, epidote). Pure aegirine or diopside should not occur in the blueschist...Brown 128 Table 2 (continued) Franciscan Pacheco Pass Calcite Aragonite Pumpellyite Epidote Lawsonite... Reference " Stoneyford Quad. Goat Mtn. Panoche Pass Cazadero Black Butte X a a X X X X X |  | | Journal (article/letter/editorial) | | the blueschists of the Franciscan Formation, California, USA. Although only recently identified as a new...Locality 1. Laytonville Quarry, Mendocino, County, California, USA Geological environment Parageneses Deerite...of Scoon's analysis of No. 93727 2. Panoche Pass, California, USA Metacherts in glaucophane schists of...formation Deerite, stilpnomelane, riebeckite, quartz, aegirine, + garnet, aragonite (partly transformed to calcite)...apatite (hematite) Ernst (1965) 3. San LuisPacheco Pass, California, USA as in 2. Deerite (rare accessory) |  | | Journal (article/letter/editorial) | | eclogite exotic blocks in the Franciscan Complex, California and Oregon D. E. MOORE AND M. C. BLAKE, J r ...Middlefield Road, M S / 9 r r Menlo Park, CA 94025, USA ABSTRACT The early metamorphic history of high-grade...metamorphism; exotic blocks; Franciscan Complex, California. INTRODUCTION Blocks of eclogite, high-grade...melange zones throughout the Franciscan Complex of California and correlative rocks of south-western Oregon...Recent cross-sections across northern and central California (Blake and others, 1988; Saleeby, 1987) show |  | Tsujimori, T., Matsumoto, K., Wakabayashi, J., Liou, J. G. (2006) Franciscan eclogite revisited: Reevaluation of the P–T evolution of tectonic blocks from Tiburon Peninsula, California, U.S.A. Mineralogy and Petrology, 88 (1) 243-267 doi:10.1007/s00710-006-0157-1 | Journal (article/letter/editorial) | | evolution of tectonic blocks from Tiburon Peninsula, California, U.S.A. T. Tsujimori1 , K. Matsumoto2 , J. Wakabayashi3...Environmental Sciences, Stanford University, Stanford, California, U.S.A. 2 Department of Geology and Mineralogy...and Environmental Sciences, California State University, Fresno, California, U.S.A. Received September...blocks in the Franciscan complex at Tiburon, California, record relatively low temperature eclogite-facies... Introduction The Franciscan Complex of the California Coast Ranges is the one of the classic localities |  | | Journal (article/letter/editorial) | | contains the clinopyroxene (Cpx; sodic augite to aegirine augite)+ Chl assemblage (central Shikoku, Maruyama...(Arai, 1987) in central Japan, and in the Dansey Pass area of the Otago schists (Bishop, 1972). A zone...greenstone complex is not augite but sodic augite and aegirine augite. As the region of DZ is small, a slight...schists, and Franciscan metamorphics in the Panoche Pass (Ernst, 1965) and Black Butte (Brown & Ghent...accompany the Ab+Lws+Chl assemblage. However, in the Panoche Pass and Black Butte, the Lws+Crs assemblage is common |  | | Journal (article/letter/editorial) | | containing various combinations of quartz, calcite, aegirine,hollandite, piemontite, phlogopite, hematite,...(5Vo)of pale violet amphibole and sEo gralulur aegirine that is filled with patchy, opaque minerals. The...sphenefrom the Franciscanblueschist terrain at Panoche Pass, California. On the basisof23 oxygens,its cationcontentsare...block in the Franciscan Terrain, PanochePass,California. Journal ofPetrology, 14, l-32. Kemp, A. and |  | | Journal (article/letter/editorial) | | as piemontite, pistacitic epidote, riebeckite, aegirine, spessartine garnet and hematite, often being...by high contents of Fe2O3 such as riebec kite, aegirine, pistacitic epidote and he matite. The stilpnomelane...prehnite-pumpellyite to greensichst facies in the Dansey Pass area, Otago, New Zealand. Geol. Soc. America Bull...Coleman, R. G. (1967), Glaucophane schists from California and New Caledonia. Tectonophysics, 4, 479-498...parageneses in Francis can metamorphic rocks, Panoche Pass, Cali fornia. Geol. Soc. America Bull., 76, |  | | Journal (article/letter/editorial) | | clinopyroxene often shows a considerable content of aegirine (NaFe3+Si2O6, also called acmite, for instance...create a solid-solution model enlarged by the aegirine component. This new model, introduced into the...Cpx(HP) model for cation disorder (note that natural aegirine also crystallizes in space group C2/c as do diopside...the three binary solid-solution series involving aegirine were set to zero, because of the lack of experimental...series. The thermodynamic data for end-member aegirine have already been integrated in the thermodynamic |  | | Journal (article/letter/editorial) | | collected from the Laytonville Quarry, Mendocino County, California, it was found that the complexity of mineralogy...origin of certain blueschist mineralogies. In California the coincidence of these two rock types is common...deerite and/or howieite from assemblages containing aegirine, garnet, quartz and carbonates) are associated...fluid. Ernst (1965) convincingly showed for the Panoche rocks that the activity of water during metamorphism...Franciscan of the Laytonville District, Mendocino County, California (abs.). Am. Miner. 50, 278. Bailey, E. H |  | | Journal (article/letter/editorial) | | occurrences of such relict minerals as aegirine, Ti-aegirine and kaersutite, and supported Sawada & Kanmera...Pessagno, 1981), especially in the Diablo Range of California (Bauder & Liou, 1979). CONCLUDING REMARKS From...sequence in Franciscan terrain, Diablo Range, California. Geol. Soc. Am. Bull., 90,561-568. Bikerman,...origin in the Franciscan subduction complex, California. Geol. SOC.Am. Bull., 93, 330-345. Coleman, R...associated eclogites, and amphibolites from Oregon and California. Bull. geol. Sot. Am.. 82. 2397-2412. Coleman |  | | Journal (article/letter/editorial) | | The blueschists of the Franciscan formation of California present a number of paradoxes. There are several...widespread occurrence of aragonite marbles in the San Juan Islands of Northwest Washington. The marbles...R.L. GaESENS: believed that bluesehists of the San Jose-Mt. Hammilton area were produced metasomatieally...metasomatie alteration of conglomerates of the Paeheco Pass area. I t is also well known to persons working...produce a mineral like crossite, riebeckite, or aegirine. However, the reaction changes the oxidation potential |  | | Journal (article/letter/editorial) | | calculated based on total cations as four. Jadeite, aegirine, and augite (diopside + hedenbergite) components...that these pyroxenes range from sodian augite to aegirine-augite, which are rich in augite component. In...above. The sodic pyroxenes of type (b) are aegirine or aegirine-augite and show pleochroism from pale yellow...and acicular crystals, and are also mainly aegirine or aegirine-augite. The sodic pyroxenes of type (d)...in the Ep-Act zone. They are sodian augite to aegirine-augite and show colourless to light green pleochroism |  | | Journal (article/letter/editorial) | | Franciscan eclogites and blueschists from Jenner, California, USA E. 1. KROGH,' C . W. O H 2 AND 1. G. LIOU3...94305, USA ABSTRACT High-grade exotic blocks in the Franciscan Complex at Jenner, California, show evidence...with time in the Mesozoic subduction zone of California at early or pre-Franciscan metamorphism. + ...INTRODUCTION The Franciscan Complex of western California consists of an assemblage of rocks that accumulated...pre-Franciscan metamorphic and tectonic history of California. A controversy exists as to whether these high-grade |  | | Book (volume) | | THE SOUTHWESTERN QUADRANT Arizona, Arkansas, California, Colorado, Louisiana, Nevada, New Mexico, Oklahoma...The Southwestern Quadrant Arizoni, Arkansas, California, Colorado, Louisicna, Nevada, New Mexico, Oklahoma...Mineral Location Numbers Arizona Arkansas California Colorado 258 Louis B30 ana HOW TO USE...volumes, through very precise directions and accurate county maps, to get you to the best and most accessible...for the county in which it is located. This site number also appears under the given county in the text |
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