Durham E-Theses The crossdoney igneous complex Harris, Norman How to cite: Harris, Norman (1937) The crossdoney igneous complex, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/10363/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail:
[email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk THE OROSSDONgY IGNEOUS COMPLEX. by NORMAN HARRIS, 3. So. University of Durham. INTRODUCTION FIELD DESCRIPTION. Geological Setting. Igneous Rock - types and their Distribution Form of Intrusion. PETROGRAPHY. Metamorphosed Sediments. Quart z-dior it e. Quart z-roonzonit e. Fine-grained granodiorite. Coarse-grained granodiorite. Veins. PETR0GENE3IS. ACKNOWLEDGEMENT S. BIBLIOGRAPHY. Description of Figures 1-8. Pig.l. Map of the Crossdoney Complex, showing the boundaries of the various rock-types. Fig.2. Metamorphosed Greywacke (Ho.38) from Drummora Great, showing aggregates of quartz grains (Q), porphyroblastS of andesine (F), a single porphyroblast of hornblende (lined and dotted) in the lower half of the figure with inclusions of quartz and orthoclase (0), colourless apatite (heavy line and stipple) and pyrite.