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http://hdl.handle.net/11375/18602
Title: | A Study of the Diagenetic History and Proposed Depositional Environment of the Manitoulin Formation in Southern Ontario |
Authors: | Leggitt, Shelley |
Advisor: | Walker, R.G. Middleton, G.V. Plint, G. |
Department: | Geography and Geology |
Keywords: | diagenetic history;depositional environment;manitoulin formation;whirlpool sandstone;silicastics;carbonates;cathodoluminescent microscopy;fracture systems |
Publication Date: | Apr-1985 |
Abstract: | <p> The transition from the Whirlpool Sandstone to the Manitoulin Dolomite represents a marine transgression. Within the Manitoulin Formation, the proportion of siliclastics to carbonates shows a marked upward decrease. The Manitoulin Formation consists of four main facies. The lower two facies indicate an inner shelf environment, while the upper two represent a middle to outer shelf environment. </p> <p> These sediments have been almost totally dolomitized. Cathodoluminescent microscopy was employed to determine the diagenetic history of quartz, calcite, and dolomite cements. The petrographic characteristics of the dolomite using CL and normal light indicate a late stage (epigenetic) dolomitization. </p> <p> Dolomitization is thought to have been a late diagenetic process brought about by Mg-rich fluids expelled during compaction of adjacent shales and supplemented by brines circulating through fracture systems. </p> |
URI: | http://hdl.handle.net/11375/18602 |
Appears in Collections: | Bachelor theses |
Files in This Item:
File | Description | Size | Format | |
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Leggitt_Shelley_M_1985_Bachelors.pdf | 24.44 MB | Adobe PDF | View/Open |
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