noun
submarine geology; marine geology
Scientific field studying the geology of the ocean floor.
海洋地質学は海底の構造や資源を研究する学問です。
Marine geology is a discipline that studies the structure and resources of the ocean floor.
Oceanography is a broader field covering physical, chemical, and biological aspects of the ocean, while 海洋地質学 focuses specifically on geological aspects.
Compound of 海洋 (ocean) + 地質学 (geology).