Geological map of New Zealand sheet 2B Barrier

The Geological Map of New Zealand Sheet 2B: Barrier

This is a specific 1:250,000 scale map published by the New Zealand Geological Survey (now part of GNS Science) in 1960.

Key Features:

• Coverage:

  • Focuses on the geology of the Hauraki Gulf islands.
  • Includes Great Barrier Island (Aotea), Little Barrier Island (Hauturu), and Cuvier Island.

• Geological Features:

  • Details volcanic formations and sedimentary basement rocks.
  • Describes features such as the Moehau Formation (metamorphosed siltstone).
  • Highlights various intrusive rocks, including quartz gabbros and diorites.

• Series Context:

  • Part of the "first edition" 1:250,000 (4 miles to 1 inch) national mapping series produced between 1959 and 1973.