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Saturday, July 25, 2020 | History

1 edition of A petrographic study of the Mamainse Diabase, Ontario, Canada found in the catalog.

A petrographic study of the Mamainse Diabase, Ontario, Canada

A petrographic study of the Mamainse Diabase, Ontario, Canada

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Published in Cincinnati .
Written in English

    Subjects:
  • Mamainse Diabase

  • Classifications
    LC ClassificationsQE 191 L234 1953 thesis
    The Physical Object
    Pagination46 p.
    Number of Pages46
    ID Numbers
    Open LibraryOL22024626M

      Malley diabase dykes of the Slave craton, Canadian Shield: U–Pb age, paleomagnetism, and implications for continental reconstructions in the early Paleoproterozoic. Kenneth L. Buchan, Anthony N. LeCheminant,* Otto van Breemen. Geological Survey of Canada, Booth Street, Ottawa, ON K1A 0E8, Canada.   The diabase sills are generally ~ m thick and comprise a range of rock types from fine-grained border facies through coarse-grained amphibole-bearing diabase to late stage granophyric diabase. These rocks are unconformably overlain by Silurian and Ordovician limestones followed by Pleistocene and Recent sediments.

    The Nipissing sills, also called the Nipissing diabase, is a large – to –million year old group of sills in the Superior craton of the Canadian Shield in Ontario, Canada, which intrude the Huronian Supergroup. Nipissing sills intrude all the Huronian sediments and older basement rocks in the northern margin of the Sudbury Basin;: 25,67 they were emplaced after the faulting and. Mineral Resource Database for Deposits Related to the Mesoproterozoic Midcontinent Rift System, United States and Canada By Laurel G. Woodruff, Klaus J. Schulz, Connie L. Dicken, and.

    4. Petrography [9] Most of the samples used in this study were collected from 3 drill cores in the Eagle intrusion (03EA, YD and 04EA) and one drill core in the East Eagle intrusion (04EA). polished thin sections were examined using transmitted and reflected light microscopy. Twenty‐six representative samples from the Eagle. Fig. 1. Location maps of study area. (a) Regional sketch map with location of the Death Valley outcrop ons of (b) and (c) and samples of this study are indicated.(b) Geological sketch map of the western Silurian Hills region with sampled metabasite bodies shown (modified from Le Heron et al. ).P11–21 are mapping units of Kupfer ().


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A petrographic study of the Mamainse Diabase, Ontario, Canada Download PDF EPUB FB2

A study of the granitic rock types along the Contact of the Timiskaming and Grenville subprovinces to the east of lake Timagami has been made. In the vicinity of the contact of the two subprovinces in the granites of the Grenville subprovince is a wide zone of faulting near which the rocks show wide spread cataclastic texture due to crushing.

In this area the granite in the Grenville sub. This paper presents a detailed petrographic and mineralogic study of the rocks of the Nipissing diabase sill near Cobalt, Ontario, Canada. The sill has an undulatory form, and the petrology of the sections in the basins differs from that of the arches.

Olivine-bearing hypersthene diabase is confined to the by: GEOCHEMICAL STUDY OF THE MAMAINSE POINT RHYOLITES, ALGOMA DISTRICT, ONTARIO By volcanic rocks near Mamainse Point, Ontario, were sampled and analyzed for major and trace elements.

The rocks are mainly Irregular to rounded clasts and fragments of diabase, felsite, 1. 3Cited by: 2. This paper presents a detailed petrographic and mineralogic study of the rocks of Canada book Nipissing diabase sill near Cobalt, Ontario, Canada.

In this study, we present new geochemical and petrographic data from a m continuous drill core profile through a Nipigon diabase sill, emplaced as part of the Ga Midcontinent rift igneous.

Detailed study of the basal m of the Keweenawan Mamainse Point volcanics in Ontario, Canada, has revealed that the section is dominated by basaltic to picritic lavas with up to 23 wt% MgO. The Ag–sulpharsenide vein deposits of northeastern Ontario occur along the north and northeastern margins of the Cobalt Embayment, a large irregular domain of Huronian-age clastic sediments intruded by Nipissing diabase sills and crosscut by regional-scale fault systems.

Previous mapping has been conducted in the study area by Tanton,Tanton, a, Tanton, b, Geul,Geul, and Smith and Sutcliffe,Smith and Sutcliffe, In general terms, the intrusive rocks south of Thunder Bay can be subdivided into: extensive sills ranging in thickness from 3 to 20 m and occasionally up to 50 m extending over km 2; and dike.

The Sipoo quartz porphyry dyke swarm (U Pb zircon age Ga) in southern Finland carries an intermediate to high coercivity remanent magnetization A N (D = °, I = − °, k =α95 = °, n = 5 dykes) which is regarded as primary.

The Sipoo diabase dykes, emplaced slightly before the granite porphyries, yield a highly scattered antiparallel direction A R (D = °, I. CHAPTER 4 COMPARISON OF THE PETROGRAPHY AND THE ALPHA-TRACK IMAGES FOR THE MAMAINSE POINT MAFIC VOLCANICS 44 Introduction 44 Petrography and Alpha-track imaging 45 The Alona Bay flow (R) 45 Series I (Rl9) 47 The Daisy Stone Flow (R18) 50 Series II (R28) In thin sections it is found that the diabase is generally very n^uch decomposed and it is only in a relatively small number of ♦Geological Survey of Canada, \'ol.\, KSitV, p.

I. **Details of the petrography of the diabase may be found in the following articles: Barlow, A. E., Journal of the Canadian Milling Institute, XI, ISlOS. Conglomerate tests are used to show that Late Precambrian Keweenawan conglomerates on the Keweenaw Peninsula, Michigan and at Mamainse Point, Ontario have suffered a partial chemical remagnetization that predated tectonic tilting.

Book Description: The results of an examination of Proterozoic rock groups, and of others which were for reconnaissance only, are summarized in this volume of the Royal Society of Canada. The Mesoproterozoic Midcontinent Rift System (MRS) of North America hosts a diverse suite of magmatic and hydrothermal mineral deposits in the Lake Su.

Petrography and geochemistry. Malley diabase dykes in the study area have well-preserved primary igneous textures and well-defined chilled margins. The dated dyke at site 15 southeast of Lac de Gras has a width of 40–45 m and is one of the widest dykes in the region.

Precambrian Research, 21 () 81 Elsevier Science Publishers B.V., Amsterdam -- Printed in The Netherlands MAGMA GENESIS IN A LATE PROTEROZOIC PROTO-OCEANIC RIFT: REE AND OTHER TRACE-ELEMENT DATA FROM THE KEWEENAWAN MAMAINSE POINT FORMATION, ONTARIO, CANADA N.W.D. MASSEY* Department of Geology, McMaster University, Hamilton, Ontario, L8S 1M4 (Canada.

Abstract. We report new paleomagnetic data from the ~ Ma intrusive Coldwell Complex (Ontario, Canada) to investigate the apparent reversal asymmetry observed in some Midcontin. Full Text; PDF ( K) PDF-Plus ( K) Citing articles; The role of magma injection and crystal sorting in the formation of early gabbros at the Coldwell Complex, Ontario, Canada 1.

Yong-hua Cao, a David J. Good, b Robert L. Linnen, b Iain M. Samson c a The Department of Earth Sciences, Western University, London, ON N6A 5B7, Canada; Key Laboratory of Mineralogy and Metallogeny. Reversal tests for directions for the Gunflint Formation and Sibley Group conglomerate (present study), Mamainse Point Lavas Palmer,Robertson, b and alkali syenite–carbonatite complexes in the Kapsukasing Structural Zone, Ontario Costanzo-Alvarez et.

A Petrographic Study of a Breccia Zone on the Eastern Contact of the Port W.D. Rare Vegetation of Ontario: Diabase cliffs of Northwestern Ontario. Ontario Natural Heritage Information Centre Newsletter 6(1) Environment Canada and Ontario Ministry of the Environment (COA).

The Canada. as site SI1‐ to ) and a diabase dike, og‐2, both from the Osler Volcanic Group, Ontario, Canada (Figure 1). Both the lava flow and the dike were emplaced during magmatic activity associated with the development of the late Mesoproterozoic North American Midcontinent Rift [Cannon, ].Audio Books & Poetry Community Audio Computers, Technology and Science Music, Arts & Culture News & Public Affairs Non-English Audio Spirituality & Religion.

Librivox Free Audiobook. Jonah Ian Stines Ramble. Roam. Wander. Full text of "Petrography And Petrology".otherwise indicated, copyright is held by the Queen’s Printer for Ontario. It is recommended that reference to the Content be made in the following form: Thomson, J.E., Bonkoff, E.J.

and Goettler, G.W. Mamainse Point copper area, Dist rict of Algoma, Ontario; Ontario Department of Mines, Map