Geology Of The Raukumara Area

Mazengarb, C.; Speden, I.G. 2000
Geology of the Raukumara area. Lower Hutt: Institute of Geological & Nuclear Sciences Limited.
Institute of Geological & Nuclear Sciences 1:250,000 geological map 6
60 p. + 1 fold. map

Abstract

The Raukumara 1:250,000 geological map covers a land area of 11,700 km², representing the easternmost part of the North Island, New Zealand.

Key geographical features include:

• The Raukumara Range in the west, characterized by forest-covered, deeply dissected terrain.
• Incised, erosion-prone hill country flanking the range to the east and south.
• Alluvial terraces and floodplains present in major catchments such as:
  • Wharekahika
  • Awatere
  • Waipaoa
  • Mata
  • Hikuwai
  • Uawa
  • Wairoa
  • Hangaroa
  • Ruakituri rivers

Additionally:

• Marine terraces are well developed along the coast.
• Dune complexes and back swamps are notable in some areas, particularly between Wairoa and Mahia Peninsula.

(auth)