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ophiolitic

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Images

  • Click image to view enlargement Figure 3 A Geological map of Vourinos ophiolitic complex in relation to the Rhodiani area B Geological map of the Rhodiani area C Interpretive tectono stratigraphic column A 1
  • fragile ecological systems it is therefore necessary to make a careful assessment of the costs and benefits of the prospects for territorial programming of those areas The organization for the Coordination of protected ophiolitic areas C A P O was officially founded on June 23 2001 on the occasion of the national conference The Ophiolites islands on
  • does it sometimes appear as softly shaped agates and opals and at other times appear as tightly compacted horizontally stacked crystals None of the samples can be scratched by a knife
  • geological with the presence of the abandoned quarries of serpentine and palombini shales
  • and as microlitic laths sheeted dike unit of an ophiolite 032 2 8e feldspar porphyritic plagiocalse phyric diabase dike feldspars occur as large floating crystals phenocrysts 033 2 9a dark green aphanitic pillow basalt with calcite bearing amygdules effusive volcanic rock representing the uppermost igneous unit of ocean crust 034 2 9b1 2 9b2 dull green
  • Volume atti 001 jpg
  • Figure 9 Model for the emplacement of the Bou Azzer ophiolitic suite 750 700 Ma North dipping subduction of the Pan African ocean 680 660 Ma Formation of mélange and HT greenschist
  • variety of slopes of clayey calcareous or sandy hillsides dotted with forests of Oak Chestnut and European Hophornbeam meadows brushwoods dells gulches and wet zones The geographical position climatic factors types of rocks and soils have concentrated in this limited area Site of Community Importance an interesting collection of landscapes
  • PROTECTED NATURE AREA ANPIL SERPENTINE OF PIEVE S STEFANO The green treasure chest of Valtiberina The area consists of three mountainous ramparts of great scenic and environmental value for their particular geomorphology and the typical
  • REGIONAL NATURAL RESERVE RUPE DI CAMPOTRERA The ophiolitic basalt of the ancient estate of Matilde di Canossa The Reserve includes about a dozen large masses of ophiolitic rock located around the Castle of Rossena one of the
  • REGIONAL NATURAL RESERVE OF MONTE PRINZERA The precious ophiolitic leg in Emilia of the pilgrimage along the Francigena in every age In the Apennine mountains of Emilia near Parma a few dozen kilometers from both the Po
  • at elevations of 1700 2300m Photo 13 In the north east of Aladaglar and in its southern flank this type of karst is immediately adjacent to the retreating cover of ophiolitic mélange Photo 14 and Miocene conglomerates Hydrology The high altitude part of Aladaglar is assumed to be the main recharge areas of karst hydrologic systems that discharge as large springs at
  • W 079º 47 35 7 Tectonic mélange of central Cuba Blocks low pressure ophiolitic diabase and of eclogite and high pressure mafic schists within serpentinite 40 min
  • W 079º 47 35 7 Tectonic mélange of central Cuba Blocks low pressure ophiolitic diabase and of eclogite and high pressure mafic schists within serpentinite 40 min
  • Importance an interesting collection of landscapes biodiversity ecological phenomena and evidence of human settlements making it a precious environmental laboratory This scenic ophiolitic land similar to the high mountain contains minerals rocks water and springs rare plants like the Mt Prinzera Buckler Mustard winged fauna like many butterflies
  • chromite bearing dunite interlayered with boudinaged layers of massive chromite likely chromitite cumulate 009 2 4 1 d thin chromite rich layers in dunite likely of cumulate origin 010 2 4 2 2 samples black submetallic texture dense medium grained chromitite cumulate chromite and intercumulus white weathering serpentinized olivine 011 2 4 1 b graded grape shot
  • Here are a few living sponges
  • orange brown serpentinized honeycomb textured harzburgite composed of cumulate olivine and intercumulus orthopyroxene olivine now black serpentine ophiolitic ultramafic cumulate rock 014 2 5 1 b serpentinized layered harzburgite cumulates composed of dunite and orthopyroxenite layers ultramafic cumulate rock 015 2 5 2 c troctolite composed of cumulate olivine and
  • This study deals with an important tectonic crux geological situation of the Italian penninic Alps geological map The nappe of Antrona with its ophiolitic rocks originated from the Piemont Ocean is the central and the most important
  • basalts characterized by the typical forms of cooled lava in pillows pillow lavas and subordinately of small outcroppings of basalt and serpentinite breccia The ophiolitic masses are englobed in an argillous matrix of many colors and are part of a chaotic complex from the upper Cretaceous period stratigraphically located at the base of the
  • Foreland Uplift Provenance crustal thrusts with foreland basins dominated by recycled sedimentary from the fold thrust belt quartzose to chert rich but variable Subduction Complex Provenance dominated by ophiolitic and oceanic material deposited into the forearc basin or subduction zone trench onset of abundant chert fragments
  • ophiolitic samples Data are from Casey 1997 Cornen et al 1999 Cornen et al 1996 Seifert and Brunotte 1996 Seifert et al 1996 Smith 1994 and J F Casey unpubl data
  • amphibolites flaser gabbros etc 6 old granodioritic intrusions metamorphosed 7 metasedimentary cover of the meta ophiolitic complex DAY 3 THE METAMORPHIC SUBSTRATUM OF MARGARITA Photograph 4 Contact between the platform series of the Juan Griego Group and the basal serpentinites of the allochthonous meta ophiolites Stop 4 The meta ophiolitic complex and the basalt
  • up primarily of mountain ridges an interesting part of the Tyrrhenian Po watershed with some of the highest peaks of the Ligurian Apennines such as Mount Penna 1741 m The area of the park extends over three valley the upper Val d Aveto with rocky peaks vast beech woods state forests of Lame and Mount Penna and glacial lakes Natural Reserve of Agoraie
  • Here are a few living sponges
  • close to the road N 22º 19 44 2 W 079º 42 53 1 Tectonic mélange of central Cuba Ophiolitic banded gabbros and related rocks within serpentinite 60 min
  • Among the types of fauna are Roe Deer and Wild Boar while other types that are often seen in the area include Buzzard Kestrel Goshawk and Short toed Eagle Founded 1979 Area 8216 hectares Altitude 250 1172 meters above sea level
  • along the Via Francigena across Mount Bardone as well as the passage of Napoleon s armies and military mule trails carved out in the early 20th century Founded 1992 Area 300 hectares Altitude 290 736 meters above sea level
  • PROTECTED NATURE AREA ANPIL OF MONTEFERRATO The metamorphosis of serpentine landscape and architecture The ANPIL of Monteferrato extends between the valleys of the Bisenzio and the Agna on the north eastern edge of the plain
  • ophiolitic rocks illustrate the intense folding and faulting in this very interesting region in Costa Rica Here students examine the intense folding in the coastal rocks They look like lava frozen in time Students examine a small fault that shows a displacement of about 1 meter TREC 00
  • black serpentine ophiolitic ultramafic cumulate rock 014 2 5 1 b serpentinized layered harzburgite cumulates composed of dunite and orthopyroxenite layers ultramafic cumulate rock 015 2 5 2 c troctolite composed of cumulate olivine and intercumulus plagioclase crystallization sequence is olivine followed by plagioclase 016 2 5 2 a layered troctolitic cumulate sequence
  • REGIONAL NATURE PARK OF AVETO The most authentic part of Liguria with the wildest nature The Regional Nature Park of Aveto is located in the Ligurian inland zone on the eastern tip of the province of Genoa It
  • This study deals with an important tectonic crux geological situation of the Italian penninic Alps geological map The nappe of Antrona with its ophiolitic rocks originated from the Piemont Ocean is the central and the most important component of this crux View of the Cima Rosso Nappes from
  • 2 1 Alpine Corsica Alpine Corsica Fig 4 and 5 is a complex stack of nappes derived either from oceanic protoliths ophiolitic Schistes Lustrés or continental basement Tenda
  • Chica river N 22º 27 16 9 W 079º 47 44 2 Tectonic mélange of central Cuba Blocks of ophiolitic diabase microgabbro and basalt within serpentinite 40 min
  • THE COORDINATION Ophiolites are petrographic associations mainly made of oceanic basalts gabbros serpentinized peridotites and serpentines Complex geodynamic events have distributed the ophiolitic
  • 16 Conglomerates in the internal Ionian flysch containing ophiolitic elements JPG
  • activity Bass but the main sources that I know of are organic in origin Here is a diagram on sponge structure the part labelled glasslike structural elements are the spicules Here are a few living sponges
  • Chica river N 22º 27 16 9 W 079º 47 44 2 Tectonic mélange of central Cuba Blocks of ophiolitic diabase microgabbro and basalt within serpentinite 40 min
  • 2 1 Alpine Corsica Alpine Corsica Fig 4 and 5 is a complex stack of nappes derived either from oceanic protoliths ophiolitic Schistes Lustrés or continental basement Tenda massif Corte slices and Serra

Videos

  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 8 (part 1 of 2) Stop 8 - Olivine cumulates, lower part of Smartville Complex NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 2 (part 4 of 4) Dr. Eldridge Moores shows pillow basalts Stop 2 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment, and along the ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 2 (part 2 of 4) Dr. Eldridge Moores introduces the ophiolite field trip at pillow basalt Stop 2 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 3 (part 1 of 2) Dr. Eldridge Moores and Dan Day (1977 UC-Davis MS Thesis Study Area) describes sheeted dikes at Stop 3 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge M. Moores Stop 2 (part 1 of 4) Dr. Eldridge Moores introduces the ophiolite field trip at pillow basalt Stop 2 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 9 Stop 9 - mantle tectonites NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment, and along the E. side of the ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 5 Stop 5 - layered gabbros NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment, and along the E. side of the complex ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 4 Stop 4 - dikes and screens, screens of plagiogranite, varitextured gabbro NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 7 Stop 7 - steeply dipping sediments with a few dikes NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment, and along ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge M. Moores Stop 10 (part 2 of 2) Stop 9 - wrapup discussion at American River Overlook, Auburn Dam NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 2 (part 3 of 4) Dr. Eldridge Moores introduces the ophiolite field trip at pillow basalt Stop 2 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge M. Moores Stop 10 (part 1 of 2) Stop 9 - wrapup discussion at American River Overlook, Auburn Dam NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south ...
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 8 (part 2 of 2) Stop 8 - Olivine cumulates, lower part of Smartville Complex NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places, eg in Auburn, Oroville Dam south abutment ...
  • The Ophiolitic Sequence From the album "Solo Duo" by Dan Clucas, available for free download at .
  • NCGS Smartville Complex Field Trip by Dr. Eldridge Moores Stop 3 (part 2 of 2) Dr. Eldridge Moores and Dan Day (1977 UC-Davis MS Thesis Study Area) describes sheeted dikes at Stop 3 NORTHERN CALIFORNIA GEOLOGICAL SOCIETY FIELD TRIP - Saturday, September 18, 2010, "GEOLOGY AND TECTONICS OF THE SMARTVILLE COMPLEX, NW SIERRA NEVADA, CALIFORNIA", Leader: Dr. Eldridge M. Moores, Distinguished Professor Emeritus, University of California, Davis Abstract The Smartville Complex comprises a north-trending submarine intrusive-extrusive (ophiolitic) complex, approximately 100km long by 40km wide in the northwestern Sierra Nevada Foothills. Generally from bottom to top, rocks comprise serpentinite (a few exposures), olivine gabbro, and layered gabbro, varitextured massive pyroxene and hornblende gabbro, plagiogranite, massive diabase, sheeted diabase, pillow lava, and volcaniclastic sediments. A few massive sulfide deposits are present in the volcaniclastic sediments. Rocks range from nearly undeformed--perhaps the best-preserved sheeted dikes and pillow lavas in North America--to highly schistose. Structure is complex, but rocks describe approximately a north-trending antiform that structurally overlies mélange and associated sediments of the Central Belt of the Sierra Nevada. Dikes intrude both igneous rocks and here and there Central Belt sedimentary rocks. Dikes are mostly north-trending, but curve to NE-trending towards the N. In places (Stanfield Hill, Marysville Road) the dikes are nearly undeformed, trending NNW and dipping steeply E. In other places ...