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Title: Stratigraphic subdivision of the Velkerri Formation, Roper Group, McArthur Basin, Northern Territory
Report id: NTGS Record 2018-006
Year: 2018
Author: Munson, TJ
Revie, D
Geological Province: McArthur Basin
Subject: Geochemistry
Rock properties
Stratigraphy: Velkerri Formation
Roper Group
Kalala Member
Amungee Member
Wyworrie Member
Abstract: The Mesoproterozoic Velkerri Formation (Roper Group, McArthur Basin) is formally subdivided into three new members. They are, in ascending stratigraphic order, the Kalala, Amungee and Wyworrie members, which correspond respectively to the lower, middle and upper Velkerri Formation of previous usage. Subdivision of the Velkerri Formation into recognisable members is complicated by poor exposures and subtle lithological differences; the three members are therefore most readily distinguished in the subsurface by a combination of methods, including lithology, organic geochemistry, chemostratigraphy, wireline (gamma ray and resistivity) logs, hyperspectral data (HyLogger), and palynology. These methods collectively provide robust, high-resolution definitions that are consistent throughout the known subsurface distribution of the formation.
Publisher: Northern Territory Geological Survey
ISSN: 1443-1149
ISBN: 9780724573349 (PDF)
NOTEContains a summary of drillhole intersections for Velkerri Formation and members.
Document Type: NTGS Record
Access Constraint: This work is licenced under Creative Commons Attribution 4.0 International (CC BY 4.0). Please give attribution to: Northern Territory of Australia (NT Geological Survey) 2018. You are requested to observe and retain any copyright or related notices that may accompany this material as part of the attribution.
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