Structural setting of the Thetford Mines ophiolite complex / by P. St-Julien and C. Hubert by P. St.-Julien

Cover of: Structural setting of the Thetford Mines ophiolite complex / by P. St-Julien and C. Hubert | P. St.-Julien

Published by Geological Association of Canada in Quebec .

Written in English

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Subjects:

  • Geology - Quebec - Thetford Mines area,
  • Thetford Mines ophiolite complex

Edition Notes

11

Book details

SeriesGAC/MAC 1979. Field trip guidebook B10
ContributionsHubert, C.
The Physical Object
Pagination27 p.
Number of Pages27
ID Numbers
Open LibraryOL22066682M

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Field trip B Structural setting of the Thetford Mines ophiolite complex [P St. Julien] on *FREE* shipping on qualifying : St. Julien, P. 1] The Thetford Mines Ophiolite Complex (TMOC) preserves a complete ophiolitic sequence, and occupies the hanging wall of a major SE dipping normal fault, the Saint-Joseph fault.

Preobduction, synobduction, and postobduction structures can be recognized in the TMOC. NS trending, preobduction, paleonormal faults are parallel to ultramafic minorCited by: The Thetford Mines Ophiolite Complex (TMOC) preserves a complete ophiolitic sequence, and occupies the hanging wall of a major SE dipping normal fault, Cited by: About Cookies, including instructions on how to turn off cookies if you wish to do so.

By continuing to browse this site you agree to us using cookies as described in. The Thetford Mines Ophiolite Complex (TMOC) preserves a complete ophiolitic sequence, and occupies the hanging wall of a major SE dipping normal fault, the Saint-Joseph fault.

Preobduction, synobduction, and postobduction structures can be recognized in the TMOC. Thetford–Mines ophiolite. The Thetford–Mines ophiolitic complex outcrops as a complete ophiolitic sequence (Hébert and Bédard, ). The largest part of this ophiolite is the mantle section, a 5 km-thick unit consisting of foliated and/or banded harzburgite cut by dunitic, orthopyroxenitic and chromititic by: 7.

The Thetford Mines Ophiolite Complex (TMOC) preserves a complete ophiolitic sequence, and occupies the hanging wall of a major SE dipping normal fault, the Saint-Joseph fault. Previous fieldtrips to the Thetford-Mines and Asbestos ophiolites include Hébert & Laurent (, ), St-Julien & Hubert (), Laliberté Structural setting of the Thetford Mines ophiolite complex / by P.

St-Julien and C. Hubert book al. (), Laurent & Baldwin (), and Hébert & Bédard (). The stratigraphical and structural analysis of the Thetford-Mines ophiolite presented in this.

Geological and structural map of the Thetford Mines Ophiolitic Complex, showing the location of Fig. 3a–c. The map is based on our own fieldwork and compilation of previous maps (Cooke,Hébert,Pinet,Brassard and Tremblay, ).

RB = Reed–Bélanger chromite mine; DL = Duck Lake; LB = Breeches Lake; DLB = Duck Lake Block; CMB: Caribou Mountain by: To such an end, an augmented review of the Thetford Mines and Sub-ophiolitic metamorphic rocks of the Quebec Appalachians Fig.

Position of the oceanic fragments and serpentinites of the Quebec and New Brunswick Appalachians. Circled numbers refer to fragments with accreted dynamothermal soles. The Jormua ophiolite: a Mafic-Ultramafic complex from an ancient ocean-continent transition zone / P. Peltonen and A. Kontinen --The Ga Payson ophiolite, Arizona, USA / J.C.

Dann --Neoproterozoic ophiolites of the Arabian-Nubian Shield / Robert J. Stern, Peter R. Johnson, Alfred Kröner and Bisrat Yibas --Neoproterozoic ophiolites in the. An integrated interpretation of seismic reflection and gravity results yields an image of the structural units (nappes, overthrust sheets and underthrust slabs) of the Cambrian-Ordovician metasedimentary and metavolcanic sequences of the Appalachian province of southern Quebec at depth and the relative position of the underlying Precambrian crystalline basement.

Request PDF | Structural characterization of the Thetford-Mines Ophiolitic Complex and overlying St-Daniel Mélange, southern Québec Appalachians | In southern Quebec, the Thetford-Mines. Buy Field trip B Structural setting of the Thetford Mines ophiolite complex by P St.

Julien (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : St. Julien, P. The Thetford-Mines ophiolite. The Thetford-Mines ophiolite (TMO) forms a NE-trending belt, 50 km in length and 10–15 km in width.

It is divided into the Thetford-Mines massif to the northwest and the Adstock-Ham Mountains massif to the southeast (Fig. 3; Schroetter et al., ). The crust of the Thetford Mines Ophiolitic Complex (TMOC) is dominated by cumu- lates, dykes, and lavas of boninitic affinity (Church, (Church, Hébert and Laurent, ;Laurent and.

Full Text; PDF ( K) PDF-Plus ( K) Citing articles; Ophiolite obduction in the Quebec Appalachians, Canada — 40 Ar/ 39 Ar age constraints and evidence for syn-tectonic erosion and sedimentation 1 2 3 Stéphane De Souza, a Alain Tremblay, a Gilles Ruffet, b Nicolas Pinet c a Département des Sciences de la Terre et de l’Atmosphère, Université du Québec, C.P.Cited by: 4.

Overview of the geology and Cr-PGE potential of the Southern Québec Ophiolite Belt Article (PDF Available) in Geological Association of Canada - Special Paper January with Reads. The Shalkar ophiolite complex consists of a series of tectonic sheets, including lavas, a complex of parallel dikes, layered complex of gabbro and gabbro-pyroxenites intruded by dikes of plagiogranites.

The tectonic sheets are subsided northward and are associated with the base of a large tectonic nappe made up of rocks of the Kokchetav. PRICHARD, H. and BROUGH, C. () Potential of ophiolite complexes to host PGE deposits. In New developments in magmatic Ni-Cu and PGE deposits; LI, C.

and RIPLEY E. (Eds.) Geological publishing house Beijing, 2 chromitite and occurrences of high grades of PGE are rarely located or recovered during mining of the Size: 1MB.

Metamorphism ranged from at the base of the sheet to T ~ °C at the top, near the tectonic contact with rocks of the superjacent ophiolite complex, under a Barrovian facies series with P total between 5 and 7 kbars (– MPa).The amphibolite is interpreted to have been derived from ocean-floor basalt that was metamorphosed under a 20 Cited by: The last section examines the regional occurrence and geodynamic significance of ophiolite belts on different continents.

The book reflects the contemporary work of the international community in a most up-to-date treatment of process-oriented questions on the evolution of ophiolites.

Page P, Bedard JH, Schroetter J-M, Tremblay A () Mantle petrology and mineralogy of the Thetford Mines ophiolite complex. Lithos (1–4)– Google Scholar Pehrsson SJ, Pereira CPG, van Staal CR, Herd R, McNicoll V () The Cormacks Lake Complex, Dashwoods Subzone; a window into the deeper levels of the Notre Dame Arc: Current Cited by: The Lake Asbestos mine is located at 46'01 'N, 71"22'W rnthe Black Lake area near Thetford Mine (Frg.

The serpentinized peridotite bearing the chrysotile-asbestos ore forms the lower strustural unit of the Thetford Mines ophiolite complex (Lau-rent l95a).

This ophiolite was tectonically emplaced The ophiolitic rocks are divided into two structural-setting groups in Figure 1. The oldest group yields zircon ages in both the and m.y. range, and is characterized by a complex structural history involving the widespread devel- opment of metamorphic tectonites and melange.

The struc. THETFORD MINES OPHIOLITE. Serpentinite ( cm across) from Quebec's Thetford Mines Ophiolite Complex, representing ancient oceanic lithospheric peridotite that was metamorphosed during the Taconic Orogeny (Ordovician).

Locality: Thetford Mines area, southeastern Mégantic County, southern Quebec, Chaudiere Appalachians, south of the St. Lawrence River, southeastern Canada. Rare earth element geochemistry of Thetford Mines ophiolite complex, Northern Appalachians, Canada The Thetford Mines complex is a complete ophiolite which is part of an ultramafic-mafic belt within Québec Appalachians.

These allochtonous bodies were emplaced during the Early Ordovician. The Thetford Mines complex comprises a lower unit of. Suprasubduction-zone ophiolites have been recognized in the geologic record for over thirty years. These ophiolites are essentially intact structurally and stratigraphically, show evidence for synmagmatic extension, and contain lavas with geochemical characteristics of arc-volcanic rocks.

Photang thrust sheet: an accretionary complex structurally below the Spontang ophiolite constraining timing and tectonic environment of ophiolite obduction, Ladakh Himalaya, NW India RICHARD I. CORFIELD, MIKE P. SEARLE and OWEN R.

GREEN. The last section examines the regional occurrence and geodynamic significance of ophiolite belts on different continents. The book reflects the contemporary work of the international community in a most up-to-date treatment of process-oriented questions on the evolution of ophiolites.

Also available. The term ophiolite derives from the Greek ophis (snake) referring to the similarity in appearance between altered ultramafic rocks (serpentinites) and snake skin (from Latin serpentium, via Medieval Latin serpentyn).In the modern sense (for reviews of historical concepts see Alpine mafic magma stem; Steinmann Trinity) an ophiolite is an assemblage of rock types whose petrogenetic and.

Upper crustal structure beneath the Zambales Ophiolite Complex, Luzon, Philippines inferred from integrated gravity, magnetic and geological data Ricky C. Salapare 1 Rushurgent Working Group – Tectonics and Geodynamics Academic Group, National Institute of Geological Sciences, College of Science, University of the Philippines, Diliman, Quezon Cited by: 4.

The Ingalls Complex is the largest and most complete of several Middle to Late Jurassic ophiolites in northwestern Washington. It structurally overlies the Skagit metamorphic core of the North Cascades and is intruded by the Late Cretaceous Mount Stuart by: Plate tectonic theory predicts that most deformation is associated with subduction and terrane accretion, with some deformation associated with transform/transcurrent movements.

Deformation associated with subduction varies between two end members: (1) where the tectonic regime is dominated by subduction of oceanic lithosphere containing small terranes, a narrow surface zone of accretionary.

Ophiolite complexes, or ophiolites (for 'snake stones') are rock sequences interpreted as being uplifted sections of oceanic crust and subjacent upper mantle that have become emplaced within rocks of the continental crustal.

The age of ophiolite formation is often quite close to the age of their emplacement into the continental crust.

(left - click to route to larger image - Ophiolites. Age and Structural Significance of Ophiolite and Adjoining Rocks in the Upper Chulitna District, South-central Alaska By D. JONES, N. SILBERLING, BELA CSEJTEY, JR., VV. NELSON, and CHARLES D.

BLOME GEOLOGIC FRAMEWORK OF THE UPPER CHULITNA DISTRICT, ALASKA GEOLOGICAL SURVEY PROFESSIONAL PAPER -ACited by: Divided into six sections, the book presents a wealth of new data and syntheses from ophiotites around the world. Introductory chapters review the distribution of ophiolites in space and time and present a synoptic discussion on their importance in Earth history.

The actual mine plan may generate $ million in value, and yet be measured to generate $1, million in value because the value measurement is incorrect. Modern strategic mine planning, a new research initiative at the Colorado School of Mines, seeks to advance the field by introducing four major innovations into the existing framework.

Summary This chapter contains sections titled: Introduction The Rogue and Galice Formations (Island Arc Complex) The Josephine Ophiolite and Galice Formation Tectonic Evolution Day 1 Day 2 Field Guide to the Josephine Ophiolite and Coeval Island Arc complex, Oregon‐California - Harper - - Field Trip Guidebooks - Wiley Online Library.

Abstract The Spontang ophiolite forms the highest tectonic thrust slice above the Mesozoic–Early Tertiary continental margin of the north Indian plate in the Ladakh‐Zanskar Himalaya.

Detailed field mapping, combined with geochemical analysis, has defined two major units: a full ophiolite sequence (Spontang ophiolite) overlain by an upper unit consisting of >‐m‐thick basalt Cited by:. The Shetland ophiolite was derived from an intra-continental, ocean-floored basin that opened shortly after Ma on the eastern edge of Laurentia, during the tensional opening of the Iapetus Ocean.

The precursor sedimentary and volcanic extensional basin is exposed in the south of Shetland and can be followed northeastwards by offshore geophysical by: An ophiolite is a section of the Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed above sea rocks which make up ophiolites are an altered form of basalt.

The rocks are often green. They are found in the mountain belts such as the Alps or the show where former ocean basins were consumed by subduction.OPHIOLITES AND OTHER MAFIC-ULTRAMAFIC COMPLEXES IN ALASKA By W.

W. Patton, Jr., S. E. Box, and Donald Grybeck Open-File Report OF This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic by:

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