Precambrian Geology, East Bull Lake Gabbro-Anorthosite Intrusion

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Ministry of Northern Development & Mines , Sudbury
ContributionsHannila, K.K., Peck, D.C.
The Physical Object
Pagination1 map scale 1:20 000
ID Numbers
Open LibraryOL22044948M

Description The main goal of this book is to provide a modern comprehensive statement on the Earth's Precambrian crust. It uses geographic and tectonic location, lithostratigraphy, geochronology, and petrogenesis as a basis for considering Precambrian coastal Book Edition: 1. The East Bull Lake Pluton, a layered gabbro–anorthosite intrusion 90 km west of Sudbury, Ontario, is in an inward-dipping lopolith and is m thick in the centre and elliptical in plan view ( km × km).Cited by: 5.

Description The main goal of this book is to provide a modern comprehensive statement on the Earth's Precambrian crust. It uses geographic and tectonic location, lithostratigraphy, geochronology, and petrogenesis as a basis for considering Precambrian coastal evolution--including the.

P Precambrian Geology of the East Bull Lake Gabbro Anorthosite Intrusion, scale. back pocket DATA Geochemical Data for the East Bull Lake Intrusion, Ontario. Miscellaneous Release—Data The East Bull Lake intrusion is a layered basic lopolith of early Aphebian age that intrudes Archean basement rocks at the southern margin of the Superior Province.

It contains at least two. Precambrian - Precambrian - Precambrian geology: By international agreement, Precambrian time is divided into the Archean Eon (occurring between roughly billion years ago and billion years ago) and Proterozoic Eon (occurring between billion and million years ago).

After the Precambrian, geologic time intervals are commonly subdivided on the basis of the fossil record. Geological environments for PGE-Cu-Ni mineralization in the East Bull Lake gabbro-anorthosite intrusion, Ontario.

THE PRECAMBRIAN GEOLOGY OF EAST-CENTRAL MINNESOTA MINNESOTA GEOLOGICAL SURVEY UNIVERSITY OF MINNESOTA ST. PAUL, MINNESOTA GUIDEBOOK SERIES NO. 12 ISSN l5i1. MINNESOTA GEOLOGICAL SURVEY and east of Mille Lacs Lake. However, extensive deformation and lack of. East Bull Lake property (Figure 1).

The survey followed a previously successful VTEM survey in May-June, The East Bull Lake Intrusion (EBLI) is a 20km long gabbro-anorthosite intrusive complex located 80km west of Sudbury, Ontario. It consists of two separate zoned intrusions joined by a 5km long feeder dyke (Figure 2).

The. EAST BULL LAKE GABBRO ANORTHOSITE INTRUSION m Scale O 05 1 km NTS Reference: 41 J/8 Chubb.

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RT., Hannila, K.K. and Peck, D.C. Precambrian Geology, East Bull Lake Gabbro-Anorthosite Intrusion; Ontario Geological Survey, Preliminary Map P, scale BOREHOLE REFERENCE EBL-1 Atomic Energy of Canada Ltd. The East Bull Lake Intrusion (EBLI) is a 20km long gabbro-anorthosite intrusive complex located 80km west of Sudbury, Ontario.

It consists of two separate zoned intrusions joined by a 5km long feeder dyke (Figure 2). The EBLI is also crosscut by two major structures: the Folson Lake (FLFZ) and Pa-risien Lake (PLFZ) fault zones; Figure 2).

The book serves as a modern comprehensive statement on the Earth's Precambrian crust, covering the main aspects of distribution, lithiostratigraphy, age, and petrogenesis of Precambrian rocks by continent within the context of the Earth's evolving continental crust.

The to Ga intrusions of the East Bull Lake intrusive suite occur in an east-northeast-trending discontinuous belt along the presently exposed boundary between the Archean Superior and the Proterozoic Southern provinces of the Canadian Shield near Sudbury, Ontario.

PRECAMBRIAN GEOLOGY OF THE NEEDLE MOUNTAINS, SOUTHWESTERN COLORADO By FEED BARKER ABSTRACT The Needle Mountains of southwestern Colorado are an up­ the east to Electra Lake and U.S.

Highway on the west, and and intrusion of the Electra Lake Gabbro; both about 1, m.y. ago. Intrusion of the Trimble Granite into the Eolus Granite. The East Bull Lake Intrusion (EBLI) is a 20km long gabbro- anorthosite intrusive complex located 80km west of Sudbury, Ontario. It consists of two separate zoned intrusions joined by a 5km long feeder dyke (Figure 2).

The EBLI is also crosscut by two major structures: the Folson Lake (FLFZ) and Parisien Lake (PLFZ) fault zones; Figure 2). Precambrian geology, East Bull Lake gabbro-anorthosite intrusion; (compilers) Geochemical data from the East Bull Lake and Agnew intrusions, and the Whiskey Lake and Ompa Lake.

Earth Planet. Sei Lett. 67, JAMES R. and HARRIS B. () Geology of the Shakespeare- Dunlop layered gabbro-anorthosite intrusion, Ontario. Current Res. Part A. Geol. Surv. Canada Paper A, River Valley pluton, Ontario JAMES R. S., BORN P. and BIGAUSKAS J.

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() Geology of the East Bull Lake layered complex. As observed in diagrams from East Bull lake, “matrix diffusion” occurs in the intrusion at distances varying between and cm from the vein (fluid source). The wall rock composition is affected closer to the vein, mainly for Ba ( cm), while U and Zr seem to go as far as cm into the wall rock.

East Bull Lake Magma Suite (ON) Huronian Volcanics 1 inch Syenite Intrusion in the Huronian Supergroup Ro Dresbrats, ON) Contributions to Precambrian Geology of Northern Michigan and Wisconsin, Michigan Geological and Biological Survey, Publicat Geological Series 15 Annells, R.N.,Geology of Michipicoten Island.

The Precambrian rocks in Grand Teton National Park on the east flank of the Teton Range are being studied by the author. The geologic map (pl. 1) of this part of the Precambrian complex and the following descriptions are based largely on his unpublished data and on brief published descriptions by Horberg and Fryxell (), Bradley (), and.

Career Opportunities. Graduates of the Mineral Deposits and Precambrian Geology (PhD) program have an expanded geoscience knowledge and are prepared for a career of pushing boundaries of research and innovation in the mineral exploration industry, some as geoscience consultants in agencies or government, some as leaders in academia and research – in geology, mineralogy and geophysics.

en Rock types change abruptly with stratigraphic height and include norite, pyroxenite, gabbronorite, hornblende gabbro, gabbro, anorthosite, harzburgite, and lherzolite. Giga-fren fr On observe des changements rapides des types lithologiques avec le niveau stratigraphique: norite, pyroxénite, gabbronorite, gabbro à hornblende, gabbro.

granitoid intrusion during the ca. – Ga Taltson tectonothermal event. Shear zone deformation between ca. Ga and Ga was initiated at pressures of approximately 5–7 kbar and temperatures of °–°C (Grover et al., ).

Figure 1: Precambrian Geology of Northeastern Alberta. Geological Environments for PGE-Cu-Ni Mineralization in the East Bull Lake Gabbro-Anorthosite Intrusion, Ontario $ Geological Setting and Characteristics of the Red Chris Porphyry Copper-gold Deposit, Northwestern British Columbia.

PRELIMINARY REPORT ON THE PRECAMBRIAN GEOLOGY OP THE ATHELSTANE AREA, NORTHEASTERN WISCONSIN1 J. ALLAN CAIN AND WALTER A. BECKMAN, JR. Department of Geology, Western Reserve University, Cleveland, Ohio and The Evanston Exploration Corporation, Evanston, Illinois In a recent issue of this Journal, the general geology of part of northeastern.

Geologic unit mapped in California: Precambrian granite, syenite, anorthosite, and gabbroic rocks in the San Gabriel Mountains; also various Precambrian plutonic rocks elsewhere in southeastern California. California Division of Mines and Geology, Bulletinp.

About this book. Introduction. Progress in Precambrian geology has been exceptionally great, indeed quite striking for geologists of the older generation; only some years ago the Precambrian appeared as an uncertain and even mystic prelude to geologic evolution. Even the very name - Precambrian - means some indi­ visible unit in the.

Present in east-central and southeastern Arizona. Some sills are more than m thick. Exposures are extensive north of Globe. ( Ma) California. Precambrian granitic rocks, unit 1 (Eastern Mojave Desert) (Early Proterozoic to Miocene) Precambrian granite, syenite, anorthosite, and gabbroic rocks in the San Gabriel Mountains; also.

Precambrian geology and the Bible: a harmony Harry Dickens and Andrew A. Snelling The Precambrian record is a rich one. This paper seeks to harmonise that record with the biblical record. We do not subscribe to macro-evolutionary palaeontology.

Rocy ouai aioal ar Geology.

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Precambrian Era: million years ago. The Precambrian Era, million years ago, is about 88% of earth’s history. There is not a major extinction event that ends the era, but an explosion of the first life billion years ago starting to develop from the single celled organisms.

Geologic Era. Time Period. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.intracratonic overthrust (Perciva l and Card ).

Intrusion of the extensive NNW-trending basic Matachewan and N-trending Hearst dyke swarms occurred at and Ga, respectively (Fig.

2; Heaman ). This was contemporaneous with emplacement of the – Ga gabbro-anorthosite East Bull Lake Intrusive Suite (Krogh et al.In geologic time, Precambrian time encompasses the time from Earth's formation, approximately billion years ago, until the start of the Cambrian approximately million years ago (mya).Because the Precambrian is not a true geologic eon, era, period, or epoch, geologists often refer to it as Precambrian time (or simply, Precambrian).