Field Trip B3 Geology and Volcanology of the Jurassic North
Field Trip B3 Geology and volcanology of the Jurassic North Mountain Basalt, southern Nova Scotia Dan Kontakl , Jarda Dostal2, and John Greenough3 1Nova Scotia Department ofNatural Resources, P. O. Box 698 Halifax, Nova Scotia, Canada B3J 2T9 2 Department of Geology, Saint Mary's University Halifax, Nova Scotia, Canada B3H 3C3 3Department ofEarth and Environmental Sciences, Okanagan University Collage, 3333 College Way, Kelowna, British Columbia Canada V1V lV7 © Atlantic Geoscience Society Department of Earth Sciences Dalhousie University Halifax, Nova Scotia, Canada B3H 3J5 ISBN 0-9737981-8-1 AGS Special Publication Number 29 013902 2 Table of Contents Page Health and Safety 4 Introduction 5 Regional Setting and Previous Work 6 Geological Setting 9 Stratigraphy of the North Mountain Basalt. Earlier Work II Recent Studies 12 Volcanological Featrues of the North Mountain Basalt Pahoehoe Flows: Overview of Formation 18 Pahoehoe Flows: Lobes, Sheets lobe, sheet flow, and lava field 24 Pahoehoe Flows: Late-stage Features and Joint Development 24 Volcanology and Distribution of the Flow Units of the North Mountain Basalt Lower Flow Unit (LFU) 29 Middle Flow Unti (MFU) 32 Upper Flow Unit (UFU) 34 Geochemistry of the North Mountain Basalt 34 Questions: Regional Distribution and Volcanology of the North Mountain Basalt 37 Field Trip Stops North Mountain basalts, North Shore of Minas Basin General geology, stratigraphy and structure 39 Stop 1: McKay Head 42 Stop 2: Five Islands Provincial Park 48 Stop 3: Economy Mountain 49 Wolfville-Blomdon Area
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