Late Devonian carbonate-conglomerate association in the Canning basin, Western Australia

Conference · Fri Mar 01 04:00:00 EST 1991 · AAPG Bulletin (American Association of Petroleum Geologists); (United States)

OSTI ID:5528604

Holmes, A E ^[1]

---

1. Lamont-Doherty Geological Observatory, Palisades, NY (United States)

Siliciclastic conglomerates of Late Devonian to Carboniferous age crop out discontinuously along the northern margin of the Canning basin in Western Australia, where they are associated with a classic example of reefal carbonate rocks. An understanding of these deposits is relevant to the timing of extension in the basin, uplift of the adjacent Kimberley block, and to the interpretation of the sequence stratigraphy of the carbonates. The conglomerates indicate that the Kimberley block was high-standing, even though most normal faulting appears to have ceased by Late Devonian time, and provided a continuous source of siliclastic material. The carbonate-conglomerate relationships were studied in detail at two localities, with brief visits to several other sections to provide a regional context. A sequence boundary of late Frasnian age is exposed at several localities. Incised valleys with 10 m relief (e.g. Van Emmerick and Mt. Elma) and onlapping relationships (e.g. Stony Creek, Van Emmerick) provide strong evidence for a type 1 boundary that likely formed during a eustatic base-level drop (cf., Devonian carbonates of Canada). The recognition of several intervals of siliciclastic conglomerate influx in the Canning basin is important because it suggests the presence of distal lowstand sandstone reservoirs that may represent potential petroleum targets.

• OSTI ID: 5528604
• Report Number(s): CONF-910403--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 75:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000* -- Geosciences
AUSTRALASIA
AUSTRALIA
CARBONATE ROCKS
CONGLOMERATES
DEVELOPED COUNTRIES
DEVONIAN PERIOD
EXPLORATION
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
GEOLOGY
MINERAL RESOURCES
PALEOZOIC ERA
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCE POTENTIAL
RESOURCES
ROCKS
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
STRATIGRAPHY
WESTERN AUSTRALIA