慢速扩张洋脊占全球洋中脊扩张系统的80%(Murton and Rona,2015),在全球洋中脊系统研究中具有重要的意义。西北印度洋卡尔斯伯格脊南起2°S,以NW-SE向趋势延伸至10°N,洋脊的扩张速率为24.6~34.4 mm/a,属于典型的慢速扩张洋脊(Ray et al.,2013)。地形分析发现,其对称扩张洋脊段具有较窄的对称V形脊轴裂谷,发育脊轴新火山脊,扩张方向与脊轴的走向垂直;非对称扩张洋脊 Slow dilatational ridges account for 80% of the global mid-ocean ridge sprawl system (Murton and Rona, 2015) and are of great importance in global mid-ocean ridge system studies. The northwestern Indian Karlsberg Ridge rises 2 ° S to the south and extends NW-SE up to 10 ° N. The ridge expansion rate is 24.6-34.4 mm / a, belonging to the typical slow expanding ridge (Ray et al. ., 2013). The topographic analysis shows that the symmetrical dilatational ridges have a narrow symmetrical V - shaped ridges, and the new ridges of the ridges are developed. The dilation direction is perpendicular to the direction of the ridges. The asymmetric dilatational ridges