(Table 2) Correlation of Mi zones with hiatuses in ODP Site 181-1124 ...

Results from Ocean Drilling Program sites 1121-1124 show the Eastern New Zealand Oceanic Sedimentary System (ENZOSS) evolved in response to: (1) the inception of the circum-Antarctic circulation, (2) orbital and nonorbital regulation of the global thermohaline flow, and (3) development of the New Ze...

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Bibliographic Details
Main Authors: Carter, Lionel, Carter, Robert M, McCave, I Nick
Format: Dataset
Language:English
Published: PANGAEA 2004
Subjects:
AGE
Age model, optional
Comment
Hiatus
Composite Core
Leg181
Joides Resolution
Ocean Drilling Program ODP
Antarc*
Antarctic
Online Access:https://dx.doi.org/10.1594/pangaea.734910
https://doi.pangaea.de/10.1594/PANGAEA.734910
Description
Summary:Results from Ocean Drilling Program sites 1121-1124 show the Eastern New Zealand Oceanic Sedimentary System (ENZOSS) evolved in response to: (1) the inception of the circum-Antarctic circulation, (2) orbital and nonorbital regulation of the global thermohaline flow, and (3) development of the New Zealand plate boundary. ENZOSS began in the early Oligocene following opening of the Tasmanian gateway and inception of the ancestral Antarctic Circumpolar Current (ACC) and SW Pacific Deep Western Boundary Current (DWBC). Widespread erosion, marked by the Marshall Paraconformity, was followed by extensive drift formation in the late Oligocene- early Miocene. Alternating nannofossil chalk and nannofossil-rich mud deposited in response to 41-kyr orbital regulation of the abyssal circulation, with the mudstones representing times of increased inflow of corrosive southernsource waters. Drift deposition at the deepest sites was interrupted by bouts of erosion coincident with Mi 1-5 isotopic events signifying expansions ... : Age from Miller et al. (1991) ...

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