Drowned valleys

Drowned valleys

The Marlborough Sounds, at the north-eastern end of the South Island, is a mountainous area that is now subsiding. The land is slowly sinking, and river valleys are becoming drowned by the sea. Because the land is sinking, either beaches have not formed, or they are at best very narrow.

• Active faults

• Coastal erosion

• Earthquakes

• European discovery of New Zealand

• Historic volcanic activity

• Volcanoes

• GEOLOGY – LAND DISTRICTS OF NEW ZEALAND

• GEOLOGY – NEW ZEALAND'S GEOLOGICAL HISTORY

• LANDSCAPE

• VOLCANIC AND THERMAL ACTIVITY

Send in your own story on this topic.