Ref. | Location | Age (ka) | Chronology | Paleomagnetic features | Remarks |
---|---|---|---|---|---|
Sediments | |||||
Modern demagnetization and directional analysis used | |||||
Rieck et al. (1992) | Tulelake, California | 17–18 | tephrochronology, sed. rates | Negative inclination | Younger than 23.4 ka ash bed |
Peck et al. (1996) | Lake Baikal, Siberia | 19–20 | AMS 14C, sed. rate | Large departure of declination and inclination from the GAD direction in several cores | Large uncertainty in C reservoir correction and sed. rates |
Nowaczyk et al. (1994), Nowaczyk and Knies (2000), Nowaczyk et al. (2003) | Fram Strait, Arctic Ocean | 19–20 | AMS 14C | Low (or negative) inclination and low RPI in some | Younger than Laschamp and Mono Lake (Auckland) excursion in same cores |
Yamazaki et al. (2003) | northwest off Hokkaido, Japan | 25–26 | AMS 14C (Itaki and Ikehara, 2003) | Low inclination | Paleodirection on fringe of secular variation |
Macrì et al. (2005) | Wilkes Land Basin, Antarctica | 15 | age model based on RPI correlation | Low inclination and low RPI | The age model was reconstructed by correlation of the RPI records to global reference curves (Guyodo and Valet 1999; Laj et al. 2002a), in agreement with 14C age and biostratigraphic constraints |
24 | Low inclination and low RPI | ||||
Hayashida et al. (2007) | Lake Biwa, Japan | 27 | age model based on tephrochronology and AMS 14C calibrated | Low inclination | Paleodirection on fringe of secular variation; younger than the Aira-Tn (c. 28.8 ka) ash layer |
Xuan et al. (2012) | Yermak Plateau (Core 22), Arctic Ocean | 17–18 | d18O correlation with AMS 14C calibrated | Low inclination | |
Lisé-Pronovost et al. (2013) | Laguna Potrok Aike, southern Argentina | 20 | AMS 14C calibrated | Slightly low inclination and low RPI | Paleodirection on fringe of secular variation |
Channell et al. (2016) | Rockall Trough, NE Atlantic | 26.5 | AMS 14C calibrated, d18O correlation | Reversed paleodirection and RPI minimum | Duration of c. 350 yrs; younger than Laschamp and Mono Lake (Auckland) excursion in same core |
Figs. S1 to S3 in Lund et al. (2017) | Bermuda Rise and Blake Outer Ridge, western North Atlantic | 19–21 | age model based on d18O correlation (to GISP2) | High-amplitude secular variation and RPI minimum | Cores CH89-9P, CH88-10P, and JPC-14 |
22–23 | High-amplitude secular variation and RPI minimum | ||||
Modern demagnetization and directional analysis not used | |||||
Clark and Kennett (1973) | Gulf of Mexico | 12–17 | foraminifera, sed. rates | Low inclination in 8 cores | Not found in more recent studies |
Yaskawa et al. (1973) | Lake Biwa, Japan | 18 | 14C, sed. rate | VGPs beyond secular variation | not found by Hayashida et al. (2007) |
Noltimier and Colinvaux (1976) | Imuruk Lake, Alaska | 17–18 | 14C, sed. rate | Low inclination | Younger than 20 ka but large age uncertainty; possible glacial disturbance of core? |
Lava flows | |||||
Coe et al. (1978) | Hilina Pali, Hawaii | 17.8 | 14C | Low inclination and paleointensity | 14C ages were from Rubin and Berthold (1961) and did not directly date the lava flows |
Laj et al. (2002b) | SOH4 core, Hawaii | 18 | age model based 14C ages and geomagnetic tie-points | Negative inclination and low paleointensity | Age model is from Quane et al. (2000); younger than Laschamp and Mono Lake (Auckland) excursion in same core |
Teanby et al. (2002) | SOH1 core, Hawaii | 20 | 40Ar/39Ar, K–Ar, lava accumulation rate | Negative inclinations and low paleointensities in c. 40 lava flows | Younger than Laschamp and Mono Lake (Auckland) excursion in same core |
Cassata et al. (2008) | Hampton Park volcano, Auckland | 26.6 | 40Ar/39Ar | Intermediate VGPs (Shibuya et al. 1992) and low paleointensity (Mochizuki et al. 2006) | |
Turrin et al. (2013) | Swift Creek, Washington | 17.3 | 40Ar/39Ar | Low inclination | Paleodirection on fringe of secular variation |
Tabernacle Hill, Utah | 16.9 | Low inclination | |||
Singer et al. (2014b) | Tianchi (Cheonji), China | 17.1 | 40Ar/39Ar | Low paleointensity and VGPs with low northern and southern latitudes (Zhu et al. 2000) | |
Leonard et al. (2017) | Taylors Hill, Auckland | 27.4 | 40Ar/39Ar | Intermediate VGPs (Cassidy 2006) |