 | | 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...reaction of albite + actinolite + chlorite to form crossite + lawsonite; greenstones contain calcite, mafic...system Ab-An-H2O suggest that metamorphism at Panoche Pass involved temperatures of about 200-300°C, lithostatic |  | | Journal (article/letter/editorial) | | 87 99 The Laytonville Quarry (Mendocino County California) exotic block: iron-rich blueschist-facies...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-...adjacent deerite. In Fe-rich metapelitic quartzites, crossite porphyroblasts, zoned from Fe 3+-rich cores to |  | | Journal (article/letter/editorial) | | Tectonic Block in the Franciscan Terrain, Panoche Pass, California by O. DON HERMES Department of Geology...tectonic inclusions within the Franciscan melange of California display a relict epidoteamphibolitic assemblage...assemblages. Hornblende commonly exhibits replacement by crossite around grain boundaries and replacement patches...well established that the Franciscan melange of California as well as many other glaucophane schist terrains...High-tension line Magnetic declination 16-5* E (1957) Panoche Pass Area 0 500 1000 1500 feet Contour interval |  | | Report (issue) | | X-ray Powder Pattern: Tiburon Peninsula, California, USA. 2.624 (100), 1.550 (80), 2.726 (70), 4.84...93 100.00 11.47 (1) Tiburon Peninsula, California, USA; corresponds to (Ca0:98 K0:02 Mg0:01 Na0:01...garnet, crossite, muscovite, jadeite, glaucophane, quartz, Distribution: In the USA, in California, numerous...Porter Creek, Sonoma Co.; Panoche Pass, San Benito Co.; in the Pacheco Pass area, Santa Clara Co.; large...Scottish-American geologist, University of California, Berkeley, California, USA. Type Material: National Museum |  | | Journal (article/letter/editorial) | | 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,...a brown hornblende: Milton and Eugster, I959); crossite marks the lowest pressures of blueschist formation |  | | Journal (article/letter/editorial) | | o f the normal facies indicators: glaucophane-crossite and lawsonite. Deerite is a ferrous-ferric hydrous...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 |  | | 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...calcite ± lawsonite metagraywackes, (2) glaucophane-crossite-bearing blueschists and jadeitic pyroxene + aragonite... 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 |  | | Journal (article/letter/editorial) | | the Black Butte ana nail Rock areas. northern California CoastRanges E. H. Bnowrl Department of GeologY...areasof the South Fork Mountain Schist, Northern California Coast Ranges,is the basis in this report for...causesof blueschist metamorphism in the Northern California Coast Ranges. Schistsof the Black Butte and Ball...part Schists in the Black Butte area, northern California Coast Ranges(Fig. l), contain minerals diagnostic...metamorphic belt extending some 2fi) km in northern California, bounded to the northeast by the blueschist facies |  | | Journal (article/letter/editorial) | | Washington State College, Bellingham, Washington 98225, USA Abstract. Phase relations of pumpellyite, epidote... lawsonite, CaCO3, parago- nite, actinolite, crossite and iron oxide are analysed on an A 1 - C a -...lawsonite + crossite + paragonite = epidote + chlorite + albite+ quartz + H20 (2) lawsonite + crossite = pumpellyite...(3) crossite + pumpellyite + quartz = epidote + actinolite + albite § chlorite + H20 (4) crossite + epidote...paragonite, Hem hematite, Rieb riebeckite, Cross crossite, Glauc glaucophane, Act actinolite, Hbld hornblende |  | | 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 |  | | Journal (article/letter/editorial) | | aegirine end-member and blue amphibole is zoned from crossite core to riebeckite rim. The bulk chemical analysis...‘schistes lustres’ (Fig. l), about 2 km west of San Andrea di Cotone (Caron et al., 1981). The rocks...zonation reflects a compositional variation from a crossite core to a riebeckite rim (Fig. 4).An example of...conditions Reference Franciscan Formation, California Sifnos, Greece St Andrea Di Cotone. Corsica ...occurrences 1 Quartz Blue amphibole Riebeckite Crossite Garnet Stilpnomelane Magnetite Hematite Aegirine |  | | 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...minerals: approximate stabilities. C, Crossite without lawsonite. C + , Crossite with lawsonite. G", Glaucophane...mineralogy or metastability. The positions of crossite and glaucophane, also plotted on Figure 1, are...observation of blueschist facies assemblages. Crossite may be the most glaucophanitic amphibole present |  | | Journal (article/letter/editorial) | | Franciscan Complex, California by DIANE E. MOORE U.S. Geological Survey, Menlo Park, California 94025 {Received...that occur throughout the Franciscan Complex of California and the Otter Point Formation of southwest Oregon...albite, medium-grained chlorite, and' glaucophane-crossite. The third retrograde metamorphism was marked...by lawsonite, chlorite, jadeitic pyroxene, and crossite; this last mineral assemblage is identical to...map of the northern and centra) Diablo Range. California. Downloaded from http://petrology.oxfordjournals |  | | Journal (article/letter/editorial) | | different eclogites in the Franciscan Complex, California, U.S.A. Chang-Whan Oh and J.G. Liou Department...different eclogites in the Franciscan Complex, California, U.S.A. In: M. Okrusch (Editor), Third International...Conference. Lithos, 25: 41-53. The eclogites in California, U.S.A., have been regarded as tectonic blocks...of 90-130 Ma. However, in Ward Creek, northern California, two different types of eclogites were identified:...petrochemical studies ofmetabasites from Ward Creek in California (Maruyama and Liou, 1988; Oh et al., 1990), we |  | | 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...glaueophane forms in aluminous rocks, whereas crossite and riebeckite form in Fe+8-rieh rocks. F Y ~ |  | | Journal (article/letter/editorial) | | facies for Fe O -rich metabasite 2 3 contains crossite. There is a clear tendency for XEp Fe3+ decrease...pumpellyite–actinolite zone. Amphibole further changes to crossite and then glaucophane and barroisite in the garnet...basic schist changes from magnesioriebeckite to crossite. As is seen in Fig. 5, the Pmp+Act-out line and...(Arai, 1987) in central Japan, and in the Dansey Pass area of the Otago schists (Bishop, 1972). A zone...schists, and Franciscan metamorphics in the Panoche Pass (Ernst, 1965) and Black Butte (Brown & Ghent |  | | 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...recorded by parallel aligned inclusions (Sl) of crossite + omphacite epidote + ilmenite titanite quartz...assemblages to the epidote blueschist facies assemblages crossite/glaucophane garnet omphacite epidote phengite...with time in the Mesozoic subduction zone of California at early or pre-Franciscan metamorphism. + |  | | Journal (article/letter/editorial) | | faults by the lawsonite zone blueschists, which pass with the development of sodic amphibole to fully...actual sodic amphibole produced is generally a crossite rather than glaucophane. Sodic amphibole forming...is observed in the metabasites of the Panoche Pass, California (Ernst 1965, Fig. 2) and also in uralitised...blueschist and eclogite of the Franciscan Complex, California. Contrib Mineral Petrol 71:67-83 Carpenter MA...metamorphic rock types of the Cazadero area, California. J Petrol 4:260-301 Ernst WG (1963) Petrogenesis |  | | Journal (article/letter/editorial) | | I I I --- I + is lawsonite Na-amphibole (crossite to glaucophane) in Zone I1 and its absence in...replaced by glaucophane chlorite or glaucophane or crossite (Fig. 4b). It follows that both epidote and hornblende...subcalcic hornblende is replaced by glaucophane or crossite, Mg-rich chlorite and garnet by Mgpoor chlorite...showing subcalcic hornblende (Hb) armoured by crossite (NaA). (d) Retrograde albite-epidote-garnet amphibolite...from the Horokanai ophiolite. by glaucophane or crossite) (Fig.4e) and plagioclase layers (now occupied |  | | 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...apatite (hematite) Ernst (1965) 3. San LuisPacheco Pass, California, USA as in 2. Deerite (rare accessory)...accessory), quartz, stilpnomelane, _+crossite, magnesioriebeckite or riebeckite + aegirine, _+ white mica |  | | Book | | ^ '“ P r . . . I West Orange SOUTH SAN FRANCISCO PUBLIC LIBRARY 9048 00992838 7 257989 R q549...q549 PEMBERTON, H.E MINERALS OF CALIFORNIA P 2995 IpSl q 49 f 07. 257889 ^ pe B T 5 w! balJ E...org/details/mineralsofcalifoOOpemb MINERALS OF CALIFORNIA MINERALS OF CALIFORNIA H. Earl r i L ] Pemberton ...H. Earl, 1907Minerals of California. An updating of: Minerals of California: 1866-1966 / by Joseph Murdoch...Includes index. 1. Mineralogy -California. 2. Mines and mineral resources- California. I. Murdoch, Joseph, 1890Minerals | | | Book | | MINERALS OF CALIFORNlA 299" 257889 PEMBERTON' HOFE CALIFORNIA MINERALS 2995 SEP 1933 OINCO Digitized by...org/details/mineralsofcalifo00pemb MINERALS OF CALIFORNIA - MINERALS OF CALIFORNIA H. Earl Pemberton ~ VAN NOSTRAND...H. Earl, 1907Minerals of California. An updating of: Minerals of California: centennial volume, 1866-1966...index. 1. Mineralogy - California. 2. Mines and mineral resources - California. I. MUidoch, J oseph, 1890Minerals...1890Minerals of California. 11. Title. QE375.C32P45 549.9794 81-15963 ISBN 0-442-274882 AACR2 Preface |  | | Journal (article/letter/editorial) | | Amer. Bull., 85, 333-344. Brown, E.H. (1977), The crossite content of Ca amphibole as a guide to pressure...parageneses in Francis can metamorphic rocks, Panoche Pass, Califor nia. Geol. Soc. Amer. Bull., 76, 879-914...Comparative study of low-grade metamorphism in the California Coast Ranges and the Outer Metamorphic Belt of...jadeite, lawsonite and glaucophane in central California. Amer. J. Sci., 260, 596-610. 都 城 秋 穂(1965),変 |  | | Journal (article/letter/editorial) | | sphenefrom the Franciscanblueschist terrain at Panoche Pass, California. On the basisof23 oxygens,its cationcontentsare...tremolite-actinolite-hornblende and glaucophane-crossite-riebeckite. Acknowledgments We acknowledge the...block in the Franciscan Terrain, PanochePass,California. Journal ofPetrology, 14, l-32. Kemp, A. and |  | | Journal (article/letter/editorial) | | Presumably Subducted Lithospheric Plates ti'om Japan, California and the Alps W. G. E ~ S T Department of Geology...Planetary Physics, University of California, Los Angeles, California 90024 l~eceived September 20, 1971...southwestern Japan, the Franciscan terrane of western California and the Sesia zone, Pennine and Helvetic realms...recrystallization. This conclusion is supported in California and the Alps by the exposure of rocks interpreted...roughly basaltic composition in which glaneophane-crossite and/or omphaeite coexist with lawsonite, epidote |
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