Effect of postglacial warming seen in high precision temperature log deep into the granites in NE Alberta

0433131 - GFÚ 2016 RIV DE eng J - Journal Article
Majorowicz, J. - Šafanda, Jan
Effect of postglacial warming seen in high precision temperature log deep into the granites in NE Alberta.
International Journal of Earth Sciences. Roč. 104, č. 6 (2015), s. 1563-1571. ISSN 1437-3254. E-ISSN 1437-3262
R&D Projects: GA ČR(CZ) GAP210/11/0183
Institutional support: RVO:67985530
Keywords : surface processes * borehole temperatures * climatic warming * Ice Age * heat flow
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 2.133, year: 2015

Recently reported new terrestrial heat flow density (referred further to as "heat flow") determination from a 2.36-km-deep well of opportunity (AOC Granite-Hunt well) drilled deep into some 2- to 2.4-Gyr-year old Precambrian basement rocks just west of Fort McMurray, Alberta, shows increase of heat flow with depth. Cores were collected from granites, which are below 0.55 km and to the well bottom of 2.36 km. This borehole was logged in June 2011, and several years after, it was drilled in 1994 and deepened in 2003. Therefore, it is assumed to be in thermal equilibrium. Temperature versus depth shows a significant increase in the thermal gradient with increasing depth in the basement rocks.
Permanent Link: http://hdl.handle.net/11104/0237405