ammonites
N88/f493 - Koranga Sandstone, Harding Stream (Cretaceous of New Zealand)

Also known as GS1403

Where: New Zealand (38.4° S, 177.3° E: paleocoordinates 81.1° S, 179.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Koranga Sandstone Formation, Late/Upper Aptian (122.5 - 112.0 Ma)

• STRATIGRAPHIC RELATIONS: From Koranga Sandstone of the Taitai Series, overlies Torelsse supergroup along Maccoyella Ridge and is unconformably overlain by the the Te Wera Sandstone. THICKNESS: From bed within formation that varies in thickness between 116 (locally) and 76 m (at this section). AGE: Korangan of Wellman (1956) = Upper Aptian based on presence in unit of Aucellina radiatostriata and Maccoyella reflecta (Day 1969, Day and Speden 1970). STRATIGRAPHIC POSITION: From between 80-120 ft above base of section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified, medium-grained, silty sandstone

• ENVIRONMENT: Accumulated in shallow-water, high-energy environment.
• SPECIFIC LITHOLOGY: Hard, non-calcareous silty medium sandstone. LITHIFICATION: Lithified, based on facies description.

Size class: macrofossils

Reposited in the IGNS

Collection methods: quarrying,

• COLLECTOR: I.G. Speden. REPOSITORY: GSNZ (now GNS Science, Lower Hutt, New Zealand).

Primary reference: I.G. Speden. 1975. Cretaceous stratigraphy of Raukumara Peninsula. New Zealand Geological Survey Bulletin 91 [A. Hendy/A. Hendy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 65641: authorized by Austin Hendy, entered by Austin Hendy on 23.09.2006

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)