Late Oligocene-early Miocene glacial record of the Ross Sea, Antarctica; evidence from DSDP Site 270

Online Access: Get full text
doi: 10.1130/0091-7613(1983)11<578:LOMGRO>2.0.CO;2
Author(s): Leckie, R. Mark; Webb, Peter-Noel
Author Affiliation(s): Primary:
Univ. Colo., Dep. Geol. Sci., Boulder, CO, United States
Other:
Ohio State Univ., United States
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 11(10), p.578-582. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. 28 refs.; illus. incl. sketch map
Summary: Foraminifera used to trace an early phase of glaciation. Glaciomarine sedimentation, resulting in the sequential development of four contrasting foraminiferal populations (assemblage zones). Gradual climatic deterioration culminated in major ice build-up by the late early Miocene. Intensification of glaciation within the Ross Sea area may be responsible for the increase in production of Antarctic Bottom Water and associated development of widespread early Neogene deep-sea hiatuses reported from lower latitude regions.—Modified journal abstract.
Year of Publication: 1983
Research Program: DSDP Deep Sea Drilling Project
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Antarctic Ocean; Antarctic bottom water; Antarctica; Assemblages; Biostratigraphy; Cenozoic; DSDP Site 270; Deep Sea Drilling Project; Deep-sea environment; Foraminifera; Glacial sedimentation; Glaciomarine sedimentation; Invertebrata; Leg 28; Lower Miocene; Marine environment; Marine sedimentation; Microfossils; Miocene; Neogene; Oligocene; Paleo-oceanography; Paleocirculation; Paleoclimatology; Paleoecology; Paleogene; Processes; Protista; Ross Sea; Sedimentation; Southern Ocean; Stratigraphy; Tertiary; Upper Oligocene; Zoning
Coordinates: S772629 S772629 W1783011 W1783011
Record ID: 1983060280
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.