The relations of the anorthosite and gabbro in the Lake Sanford area, New York

In a detailed study of the area of the Lake Sanford titaniferous magnetite deposits some interesting relations between anorthosite and gabbro came to light. Gabbro can be found grading into the anorthosite, showing the consanguinity of the two rocks, but in a few places the gabbro is intrusive into the already consolidated portions of the anorthosite.