Object # PRR-35332: Photograph

Kind of Object	Photograph
Sample Description	1983 Wright Film017-006. Flow breccia at base of north Daniell Peninsula outcrop (samples AW82235, AW82236)
General Notes	North facing end of west of the central snowfield/glacier. Steep, pinnacled bluff is composed of many thin flows, flow breccia, breccia flows and 2/3rds up a thick unit of contorted lava masses in bright yellow matrix. Thin flows typically highly vesicular, continuous for 10-15m or more. Flow breccia comprises welded clasts of scoriaceous lava. No matrix, but also not much void space except vesicles. Lava is glassy - was ?olivine rich but now all limonitzed. Some clinopyroxene phenocrysts. Some 5m higher in sequence get more blocky, less vesicular - nonvesicular flows of clinopyroxene rich (altered) olivine lava. Pods of lava in sequence interpreted as flow tongues, generally more massive and tending to columnar.
Continent	Antarctica
Region	Northern Victoria Land
Mountain/Island Name	Daniell Peninsula
Tag/Feature	Bedrock closeup
Coordinates	-72.667, 169.620 (72° 40' S, 169° 37.2' E)
Era	Cenozoic
Period	Neogene
Stratigraphy	Supergroup Group Formation Member Section Name Unit Thickness Sample Height Distance from Intrusion McMurdo Volcanic Group Hallett Volcanic Province
Date Collected	1983-01-17
Field Year Collected	1983
Collector	Wright, Anne C.
Donor	Wright, Anne C.
Photographer	Wright, Anne C.
Coloration	Color
Film	35mm slide

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Cite as: The Polar Rock Repository (PRR), Byrd Polar and Climate Research Center (BPCRC), Ohio State University: Polar rock and dredge samples available for research and educational use from the PRR. doi:10.7289/V5RF5S18 [date of access]

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