Physical Sciences and Mathematics Commons^™

Investigation Of Hydrothermal Alteration Processes In The Troodos Ophiolite And The Abitibi Greenstone Belt, Tamara P. Sredojevic

Electronic Thesis and Dissertation Repository

Hydrothermal alteration is an important and ubiquitous process between rocks in the Earth’s crust and seawater. To gain more understanding of such processes, two localities are investigated here: the Troodos Ophiolite Complex of Cyprus and the syenitic rocks associated with gold mineralization at the Upper Canada property, Kirkland Lake, Ontario. This thesis reports unique effects of hydrothermal activity. The Troodos Ophiolite samples consist of sheeted diabase dykes, gabbroic and ultramafic rocks in the CY-4 drill hole. The oxygen isotopic signature of these rocks indicates that alteration temperatures increased downhole and channeling of low-temperature fluids occurs at the dyke – gabbro …