Figure F116. Rose diagram of paleomagnetic declinations from discrete samples (black) and long-core measurements (gray) from (A) Hole 1270B and (B) Holes 1270C and 1270D. Directions are projected into archive-half coordinates, which have structural meaning since the core splitting face is routinely traced orthogonal to the strike of the foliation (C). As a result, archive-half +x and +y axes tend to parallel the strike and dip directions, respectively (right-hand rule nomenclature). The nonrandom distribution of declinations demonstrates the existence of a preferred orientation of the main planar structures in both the gabbros from Hole 1270B and the peridotites from Holes 1270C and 1270D.

Figure F116. Rose diagram of paleomagnetic declinations from discrete samples (black) and long-core measurements (gray) from (A) Hole 1270B and (B) Holes 1270C and 1270D. Directions are projected into archive-half coordinates, which have structural meaning since the core splitting face is routinely traced orthogonal to the strike of the foliation (C). As a result, archive-half +x and +y axes tend to parallel the strike and dip directions, respectively (right-hand rule nomenclature). The nonrandom distribution of declinations demonstrates the existence of a preferred orientation of the main planar structures in both the gabbros from Hole 1270B and the peridotites from Holes 1270C and 1270D.