Blanco Fracture Zone is a fracture zone running between the Juan de Fuca Ridge and the Gorda Ridge. The dominating feature of the fracture zone is the 150 km long Blanco Ridge, which is a high-angle, right-lateral strike slip fault with some component of dip-slip faulting. Charlie-Gibbs Fracture Zone The Charlie-Gibbs Fracture Zone consists of two fracture zones in the North Atlantic that extend for over 2000 km. These fracture zones displace the Mid-Atlantic Ridge a total of 350 km to the west. The section of the Mid-Atlantic Ridge between the two fracture zones is seismically active. Heirtzler Fracture Zone The Heirtzler Fracture Zone was approved by the Advisory Committee on Undersea Features in 1993. Mendocino Fracture Zone The Mendocino Fracture Zone extends for over 4,000 km off the coast of California and separates the Pacific Plate and Gorda Plate. The bathymetric depths on the north side of the fracture zone are 800 to 1,200 m shallower than to the south, suggesting the seafloor north of the ridge to be younger. Geologic evidence backs this up, as rocks were found to be 23 to 27 million years younger north of the ridge than to the south. Romanche Fracture Zone Also known as the Romanche Trench, this fracture zone separates the North Atlantic and South Atlantic Oceans. The trench reaches 7,758 m deep, is 300 km long, and has a width of 19 km. The fracture zone offsets the Mid-Atlantic Ridge by more than 640 km. Sovanco Fracture Zone The Sovanco Fracture Zone is a dextral-slip transform fault running between the Juan de Fuca and Explorer Ridge in the North Pacific Ocean. The fracture zone is 125 km long and 15 km wide. See also Plate reconstruction References Plate tectonics Oceanographical terminology