Paleomagnetic record of Site 177-1089 ...

We report geomagnetic directional paleosecular variation, relative paleointensity proxies and oxygen isotope data from the upper 88 m composite depth (mcd) at South Atlantic Ocean Drilling Program (ODP) Site 1089 (40°56.2?S, 9°53.64?E, 4620 m water depth). The age model is provided by high-resolutio...

Full description

Bibliographic Details
Main Authors: Stoner, Joseph S, Channell, James E T, Hodell, David A, Charles, Christopher D
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
DEPTH, sediment/rock
AGE
Relative paleointensity proxy
Maximum angular deviation
NRM, Declination
NRM, Inclination
Composite Core
Leg177
Joides Resolution
Ocean Drilling Program ODP
South Atlantic Ocean
Online Access:https://dx.doi.org/10.1594/pangaea.808783
https://doi.pangaea.de/10.1594/PANGAEA.808783
Description
Summary:We report geomagnetic directional paleosecular variation, relative paleointensity proxies and oxygen isotope data from the upper 88 m composite depth (mcd) at South Atlantic Ocean Drilling Program (ODP) Site 1089 (40°56.2?S, 9°53.64?E, 4620 m water depth). The age model is provided by high-resolution oxygen isotope stratigraphy, augmented by radiocarbon dates from the upper 8 mcd of nearby piston core RC11-83. Mean sedimentation rates at Site 1089 are in the range of 15 to 20 cm/kyr. Two intervals during the Brunhes Chron, at ?29.6 mcd (?190 ka) and at ?48 mcd (?335 ka), have component magnetization directions with positive (reverse polarity) inclination; however, the excursional directions are heavily overprinted by the postexcursional field. Magnetite is the dominant carrier of magnetic remanence, and occurs in the pseudosingle-domain (PSD) grain size. An additional higher-coercivity magnetic carrier, characterized by low unblocking temperatures (<350°C), is assumed to be authigenic pyrrhotite. A ... : Depth is mcd (meter composite depth). ...

Similar Items