 | | Journal (article/letter/editorial) | | ABSTRACT: Narrow, intermittent, fault-bounded outcrops forming the largely Ordovician Highland Border...that two main groups exist. One, represented in outcrops the length of the Highland Boundary fault-zone...black shales, arenites and conglomerates. The outcrops are fragmented and poorly exposed, and it is perhaps...Border' covers a much wider area in which there are outcrops of both the Dalradian Supergroup and sediments...rocks mainly of greenschist facies (Table 1). Outcrops are narrow, discontinuous and strongly faulted |  | | Report (chapter) | | this lineament (Hyden 1979; Cawood 1986, 1987). Outcrops to the north of the Alpine Fault have been mapped...incomplete, pseudostratigraphy in a few classic outcrops, notably Red Mountain (e.g. Sinton 1980), whereas...sheared serpentinite) in which the ophiolite stratigraphy is highly disrupted (e.g. serpentinite melange)...melange) are placed within the Patuki Melange. Some outcrops of highly sheared and disrupted ophiolitic rocks...Mountain ophiolite (Turnbull 2000). However, such outcrops have marked similarities with the Patuki Melange |  | | Journal (article/letter/editorial) | | tandfonline.com/loi/tigr20 Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...John Wakabayashi (2004) Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...All rights reserved. Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...December 2014 Although the best-known outcrops of serpentinite in the California Coast Ranges are part...the Coast Range ophiolite (CRO), significant serpentinite bodies crop out within the Franciscan subduction |  | | Journal (article/letter/editorial) | | to completely replaced by sodic pyroxene, and plagioclase is albitised resulting in rocks with 6 8 wt.%...tectonised complex of spilites, cherts, isolated serpentinite bodies, greywackes and shales. Palaeontological...Types Volcano-sedimentary sequences with small serpentinite bodies characterised by a chaotic internal structure...Turkey. Only the major shear zones and large serpentinite outcrops are shown. Blank areas consist of closely...pelagic sediments, basic volcanic rocks and serpentinite, all of which are incipiently metamorphosed |  | | Report (issue) | | Quartzite....................................... Serpentinite, marble, and metabasalt............ Ultramafic-carbonate...Metabasalt, meta-andesite, carbonate rock, and serpentinite......................... Sandstone, conglomerate.................. Metaquartzose sandstone and serpentinite... Metabasalt.................................Amphibolite..................................... Serpentinite, and metavolcanic and carbonate rocks......................................... Hornblende-plagioclase gneiss and plagioclasequartz gneiss. ....... |  | Oostindiër, Jaap, Vriend, Simon P., Huijsmans, Joep P.P., Taufen, Paul M. (1990) Weathered, Ni-sulfide ore-hosting and barren serpentinites in the Fortaleza de Minas greenstone belt, Minas Gerais, Brazil: A rock geochemical study. Chemical Geology, 81 (3) 209-220 doi:10.1016/0009-2541(90)90116-o | Journal (article/letter/editorial) | | chemical composition of the serpentinite surface rocks. To relate weathered serpentinite composition to the original...serpentinites similar to the O'Toole orehosting serpentinite occur in the Fortaleza de Minas greenstone belt...belt. Rock geochemical sampling of serpentinite outcrops was carried out to determine if the presence...reflected in the chemistry and mineralogy of its serpentinite host rock. This 210 information can be used...from outcrops of the mineralized O'Toole sequence serpentinites are compared with serpentinite data collected |  | Hattori, Kéiko H., Guillot, Stéphane, Saumur, Benoit-Michel, Tubrett, Mike N., Vidal, Olivier, Morfin, Samuel (2010) Corundum-bearing garnet peridotite from northern Dominican Republic: A metamorphic product of an arc cumulate in the Caribbean subduction zone. Lithos, 114 (3) 437-450 doi:10.1016/j.lithos.2009.10.010 | Journal (article/letter/editorial) | | that the peridotite originally solidified as a plagioclase-bearing cumulate of an arc melt at a shallow...and Ca- and Al-rich garnet at the expense of plagioclase, at a depth of ~ 50 km. The garnet peridotite...The garnet periodotite was then exhumed in the serpentinite subduction channel. These events likely took...1991). It is composed of amphibole + quartz + plagioclase ± rutile ± ilmenite ± chlorite ± epidote, and...pervasively hydrated with relict symplectite of plagioclase + diopside + garnet. These lenses are wrapped |  | | Report (issue) | | REPORT 276 EVALUATION OF MINERALIZATION IN SERPENTINITE AND ENCLOSING ROCKS IN THE HAMDAH AREA, KINGDOM... Intrusive rocks .................. 5 5 8 SERPENTINITE ...................... 10 Description .......Hamdah serpentinite area ................... in pocket Sample location map of the Hamdah serpentinite area...goldpelt and the Hamdah serpentinite area ...... 3 Areal view of serpentinite containing numerous rounded...dike rock .................... 9 Areal view of serpentinite, carbonaceous schist, and mafic dike ...... |  | | Report (edition) | | Peninsula II Mount's Bay 1 4 III St. Agnes District IV Falmouth Bay V The Lizard Peninsula REFERENCES...Megiliggar Rocks 23 13. Map of the St. Agnes district 26 14. North-south cliff section through the...around Lizard Point 38 20. Vein of rodingite in serpentinite, Enys Head, Cadgwith 40 21. Map of the western...intrusion of Tregonning-Godolphin. Granite also outcrops at Cligga Head, St. Agnes Beacon and St. Michael's...is nowadays only exploited in the St. Austell district and at Lee Moor, further east in Devon. Accounts |  | Estrada-Carmona, Juliana, Weber, Bodo, Scherer, Erik E., Martens, Uwe, Elías-Herrera, Mariano (2016) Lu-Hf geochronology of Mississippian high-pressure metamorphism in the Acatlán Complex, southern México. Gondwana Research, 34. 174-186 doi:10.1016/j.gr.2015.02.016 | Journal (article/letter/editorial) | | that form under high-pressure (HP) conditions at lower crust and upper mantle depths. Formation of eclogite...16 14 P (kbar) 65 EC Xa 12 BS 10 35 Ix 8 AM Depth (km) age (Elías-Herrera and Ortega-Gutiérrez...Petlalcingo and the Acateco subgroups. The structurally lower Petlalcingo subgroup included the Magdalena Migmatite...GS = greenschist, BS = blueschist, GR = granulite, AM = amphibolite, EC = eclogite. Please cite this article...Formation is composed of amphibolite, metagabbro, serpentinite, eclogite, pelitic schist, and quartzite (Ortega-Gutiérrez |  | | Report (edition) | | Peninsula II Mount’s Bay 15 III St. Agnes District 24 IV Falmouth Bay 29 V_ The Lizard Peninsula...intrusion of Tregonning-Godolphin. Granite also outcrops at Cligga Head, St. Agnes Beacon and St. Michael’s...landscape can be related to uplift and subsidence of the land and to changes in sea-level during the Tertiary...It stands on a small plug of phonolitic lava of lower Cretaceous age, quite unlike any rock exposed on... Take the unpaved road on the left, leading to Lower Bostraze china clay pit (ECC International Ltd) |  | | Report (issue) | | . 50 Foothills Fault Zone and the Mother Lode District.................. 51 Conclusions........................... 20 9. Effects of deformation on plagioclase-phyric diabase at Wadi Khadra..................the average compositions of primary spinel in serpentinite samples from the Nabitah fault zone...........and analogous tectonic setting, the Mother Lode District in California is reviewed as a model for gold...Identified by a locus of northtrending, fault-bounded serpentinite bodies, the Nabitah fault system can be traced |  | Boschi, Chiara, Dini, Andrea, Baneschi, Ilaria, Bedini, Federica, Perchiazzi, Natale, Cavallo, Andrea (2017) Brucite-driven CO2 uptake in serpentinized dunites (Ligurian Ophiolites, Montecastelli, Tuscany) Lithos, 288. 264-281 doi:10.1016/j.lithos.2017.07.005 | Journal (article/letter/editorial) | | MANUSCRIPT Abstract Understanding the mechanism of serpentinite weathering at low PT temperature - that involves...has been demonstrated that the carbonation of serpentinite mine tailings and ED shafts, at low temperature...Mumpton and Thompson, 1966); (iv) a systematic lower modal estimate of this mineral, being difficult...adjacent carbonated and non-carbonated serpentinite outcrops from Tuscany (Italy). NU Serpentinites...widespread in Tuscany, but naturally carbonated outcrops MA only occur in a few areas (Fig. 1; Boschi |  | | Journal (article/letter/editorial) | | intensely metamorphosed Archean rocks subdivided into lower (3000 m.y. and more) Dimensions of the ring (circular...Carboniferous;5) Riphean; 6 ) middle Proterozoic; 7) lower Proterozoic; 8) Archean; 9) depth contours of Precambrian...subgroups [ I ] . The sedimentary cover begins with lower-middle Proterozoic sequences. The oldest relicts...aeromagnetic anomalies in southeast Cameroon, outcrops of talc, serpentinites, gabbro-amphibolites, and...composed of amphibole (sometimes pyroxene) and plagioclase, with garnet, biotite, and quartz present as |  | | Report (issue) | | _____ Volcanic rocks _________________________ Lower Miocene sedimentary rocks ________ Monterey Shale...probably generated by a thick tabular body of serpentinite dipping steeply north-northeast, inferred to...to be the main source of the serpentinite extrusion along this mountain, (3) a major elliptical magnetic...Upper Miocene and Pliocene rocks Monterey Shale _ Lower and middle Miocene rocks Eocene and Upper Cretaceous...these rocks is 0.0001 emu/cm3 or less, considerably lower than values for magnetic rocks near Table Mountain |  | | Report (edition) | | Ireland, Colby House, Stranmillis Court, Malone Lower, Belfast, BT9 5BF � 028-9038 8462 Fax 028-9038 8461...published in 1935. The chapters concerned with the Lower Palaeozoic systems have now been completely revised...Greig has revised the chapters dealing with the Lower Palaeozoic, New Red Sandstone, Tertiary and the...Geology; Physical Features; History of Research 1 2. Lower Palaeozoic Rocks: 8 3. Ordovician: Arenig Rocks...Wenlock Rocks, Girvan Area 34 5. Old Red Sandstone: Lower Old Red Sandstone; Upper Old Red Sandstone 50 | | | Report (edition) | | chapters concerned edition by the late with the Lower Palaeozoic systems have now been completely revised...Greig has revised the chapters dealing with the Lower Palaeozoic, New Red Sandstone, Tertiary and the...Geological Kensington, London SW1 Museum, district described Exhibition Road, South Digitized...Physical Features; History of Research 1 2. Lower Palaeozoic Rocks: 8 3. Ordovician: Arenig Rocks...Rocks, Girvan Area 34 4. 5. Old Red Sandstone: Lower Old Red Sandstone; Upper Old Red 50 Sandstone 6 |  | Shagam, R., Hargraves, R. B., Morgan, W. J., Houten, F. B. Van, Burk, C. A., Holland, H. D., Hollister, L. C. - Eds. (1972) Studies in Earth and Space Sciences. GSA Memoir 132. Geological Society of America doi:10.1130/mem132 | Report (issue) | | Mechanisms for the Emplacement of AlpineType Serpentinite .John P. Lockwood 273 A Primary Peridotite...Weekly, v. 70, no. 6, p. 10-17) among others. If I am to avoid extensive repetition, there is little alter¬... Drowned ancient is¬ lands of the Pacific basin: Am. Jour., Sci., v. 244, no. 11, p. 772-791), one un¬...not effect and interpret geological surveys as on land. Thus a limit was set and oceanography took the...and read the work! Though it is negative evidence I am further convinced of the legitimacy of my view on |  | | Book | | MANTLE AND LOWER CRUST EXPOSED IN OCEANIC RIDGES AND IN OPHIOLITES Petrology and Structural Geology...listed at the end of this voZume. Mantle and Lower Crust Exposed in Oceanic Ridges and in Ophiolites...Ridges: Implications for Melt Generation and Mantle Outcrops Chan tal Tisseau and Thierry Tonnerre 181 Introduction...study the interaction between uppermost mantle and lower crust. The approach favored here is that of petrological...mutual relationships between uppermost mantle and lower crust are poorly known. In contrast, onshore ophiolites |  | | Report (issue) | | ........................................ 17 Serpentinite ........................................................................ 17 WEATHERING OF SERPENTINITE AND TALC .....................................and enstatite versus height above base of the serpentinite .................................... 14 Multilithic............. 23 Photomicrograph of silicified serpentinite ................................................... 24 SiO2 and MgO, Fe2o3 and FeO versus serpentinite alteration ................................ |  | Dias, Á.S., Mills, R.A., Ribeiro da Costa, I., Costa, R., Taylor, R.N., Cooper, M.J., Barriga, F.J.A.S. (2010) Tracing fluid–rock reaction and hydrothermal circulation at the Saldanha hydrothermal field. Chemical Geology, 273 (3) 168-179 doi:10.1016/j.chemgeo.2010.02.020 | Journal (article/letter/editorial) | | the water column, and the occurrence of serpentinite outcrops in the vent area. We have studied the geochemistry...Hydrothermal activity associated with ultramafic outcrops at midocean ridges (MOR) is a relatively recent...and ultraslow spreading ridges and the ultramafic outcrops are usually associated with detachment faulting...(Barriga et al., 2003). The measured temperatures are lower than the end-member fluid temperature due to the...Metabasalt Metabasalt Metagabbro Metagabbro Serpentinite Serpentinite Steatite Steatite 2223 2421 2217 2232 |  | Berger, Julien, Caby, Renaud, Liégeois, Jean-Paul, Mercier, Jean-Claude C., Demaiffe, Daniel (2011) Deep inside a neoproterozoic intra-oceanic arc: growth, differentiation and exhumation of the Amalaoulaou complex (Gourma, Mali) Contributions to Mineralogy and Petrology, 162 (4) 773-796 doi:10.1007/s00410-011-0624-5 | Journal (article/letter/editorial) | | West Africa (Gourma, Mali), corresponds to the lower and middle sections of a Neoproterozoic intra-oceanic...Early c. 793 Ma-old metagabbros crystallised at lower crustal or uppermost mantle depths (25–30 km) and...geophysical tools combined with information brought by lower crustal xenoliths. These studies show that the root...Kelemen 2001; Behn and Kelemen 2006). Delamination of lower arc crust would refertilise the mantle and may help...thus representing a rare example of an island arc lower crust formed during the Precambrian Earth. This |  | | Report (chapter) | | two tectonic units in the blueschist sequence. A lower more recrystallised blueschist unit consists of...(Fig. 2), marked by extensive brecciation and serpentinite lenses (Okay 1980c), is also characterized by...Maastrichtian; Pal., Palaeocene; U., Upper; L., Lower. a strongly tectonised volcano-sedimentary complex...wide section (Okay 1981, Fig. 4). Talc and serpentinite outcrops of various sizes mark numerous thrusts in...(Yeniyol 1979)and Emirda~ (Umman & Yerg6k 1979) areas. Lower and Middle Eocene conglomerates and limestones are |  | Gualtieri, A. F., Pollastri, S., Gandolfi, N. B., Ronchetti, F., Albonico, C., Cavallo, A., Zanetti, G., Marini, P., Sala, O. (2014) Determination of the concentration of asbestos minerals in highly contaminated mine tailings: An example from abandoned mine waste of Cretaz and Emarese (Valle d'Aosta, Italy) American Mineralogist, 99 (7) 1233-1247 doi:10.2138/am.2014.4708 | Journal (article/letter/editorial) | | 0003-004X/14/0007–1233$05.00/DOI: http://dx.doi.org/10.2138/am.2014.4708 The ideal (approximated) formulas of the...evaluation of the hazard associated with serpentinite outcrops (and asbestos containing mine tailings)...difficult by two major factors: (1) asbestos bearing serpentinite textures typically consist of fine-to-ultrafine...SEM when the estimated asbestos concentration is lower than 1 wt% and MOCF, XRPD, and FTIR when it is higher...magnetite, one of the main constituents of the serpentinite accessories, with the genesis attributed to |  | Cooperdock, Emily H.G., Raia, Natalie H., Barnes, Jaime D., Stockli, Daniel F., Schwarzenbach, Esther M. (2018) Tectonic origin of serpentinites on Syros, Greece: Geochemical signatures of abyssal origin preserved in a HP/LT subduction complex. Lithos, 296. 352-364 doi:10.1016/j.lithos.2017.10.020 | Journal (article/letter/editorial) | | October 2017 Available online xxxx Keywords: Serpentinite Syros Cycladic Blueschist unit Trace element...and magnetite. δD and δ18O values of bulk rock serpentinite powders and chips (δD = −64 to −33‰ and δ18O...peridotite. However, recent compilations of global serpentinite data demonstrate that whole rock major and trace...with serpentinites in multiple meta-ophiolitic outcrops (Katzir et al., 2007; Keiter et al., 2011; Ridley...element, and stable isotope geochemistry from serpentinite samples that cover all major occurrences on |
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