S136/f702 - Deborah Volcanic Fm, Old Rifle Butts (Oligocene of New Zealand)

Also known as GS5669; Coll# 3100 (Hendy PhD)

Where: New Zealand (45.1° S, 171.0° E: paleocoordinates 52.7° S, 172.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Deborah Volcanic Formation (Alma Group), Early/Lower Oligocene (33.9 - 28.4 Ma)

• STRATIGRAPHIC RELATIONS: From the Deborah Volcanic Fm, which is the middle unit of the Alma Group, overlain by McDonald Limestone, and overling the Totara Limestone. AGE: Whaignaroan in text of Gage (1957); Whaingaroan = Rupelian to earliest Chattian; here assigned to Early Oligocene to avoid orphaning. STRATIGRAPHIC POSITION: Uknown position with unit.

Environment/lithology: coastal; lithified, volcaniclastic, red, conglomeratic tuff

• ENVIRONMENT: Submarine eruptive phase in shallow marine water.
• GENERAL LITHOLOGY: Variable lithology; commonly red-weathering, massive or coarsely current-bedded tuff, scoria, and basaltic breccia. LITHIFICATION: Lithified, assumed on the basis of age, and facies description.

Reposited in the IGNS

Collection methods: quarrying,

• COLLECTOR: Unknown collector. REPOSITORY: New Zealand Geological Survey (now GNS Science, Lower Hutt, New Zealand).

Primary reference: M. Gage. 1957. The Geology of the Waitaki Subdivision. New Zealand Geological Survey Bulletin 55 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 67912: authorized by Austin Hendy, entered by Austin Hendy on 15.12.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia, gastropoda, and scaphopoda. IDENTIFIER: Identified by J. Marwick. NOMENCLATURE: Somewhat antiquated but identified by specialist and often to subgeneric and species resolution.
Show authors, comments, and common names
Bivalvia
 Arcida - Limopsidae
Limopsis cf. campa
 Pectinida - Pectinoidae
Serripecten "n. sp."
Serripecten "n. sp." Marwick 1928 scallop
 Pectinida - Limidae
Limatula trulla
Limatula trulla Marwick 1926 file clam