Haag Nunataks

The granitic basement rocks exposed in the Haag Nunataks consist of highly deformed and foliated granodioritic and dioritic orthogneisses. These orthogneisses were initially intruded by aplite and pegmatite dikes and later intruded by magmatic granite dikes. The main tectonic, planar, fabric of the orthogneiss trends north–south. This planar fabric has been deformed by a second and final deformation event evident as shear zones and fold hinges that effect the planar fabric of the orthogneisses. The shear zones and fold hinges of the second deformation event has also deformed the aplite and pegmatite dikes. The geochemical and isotopic data for the orthogneisses are consistent with their protoliths being igneous rocks associated with either a continental margin or island arc crustal setting. The interpretation of aeromagnetic data by Garrett and others ==Fauna and flora==

In association with detailed biological field surveys of sites in Ellsworth Land by P. Convey, the more isolated Haag Nunataks were visited on February 23, 2001. During this visit and later examination of samples collected during it, the Haag Nunataks were found to be devoid of any fauna and flora, including tardigrades. ==References==