scholarly journals Determination of rapid Deccan eruptions across the Cretaceous-Tertiary boundary using paleomagnetic secular variation: Results from a 1200-m-thick section in the Mahabaleshwar escarpment

2008 ◽  
Vol 113 (B4) ◽  
Author(s):  
Anne-Lise Chenet ◽  
Frédéric Fluteau ◽  
Vincent Courtillot ◽  
Martine Gérard ◽  
K. V. Subbarao
Keyword(s):  
Secular Variation ◽  
Thick Section ◽  
Paleomagnetic Secular Variation

scholarly journals Paleomagnetic secular variation at the Azores during the last 3 ka

2012 ◽  
Vol 117 (B7) ◽  
pp. n/a-n/a ◽  
Author(s):  
Anita Di Chiara ◽  
Fabio Speranza ◽  
Massimiliano Porreca
Keyword(s):  
Secular Variation ◽  
Paleomagnetic Secular Variation

scholarly journals Paleomagnetic secular variation for a 21,000-year sediment sequence from Cascade Lake, north-central Brooks Range, Arctic Alaska

2021 ◽  
Author(s):  
Douglas P. Steen ◽  
Joseph S. Stoner ◽  
Jason P. Briner ◽  
Darrell S. Kaufman
Keyword(s):  
Secular Variation ◽  
Remanent Magnetization ◽  
Sediment Cores ◽  
Natural Remanent Magnetization ◽  
Companion Paper ◽  
Angular Deviation ◽  
Arctic Alaska ◽  
Geomagnetic Field Models ◽  
Paleomagnetic Secular Variation ◽  
Radiometric Ages

Abstract. Two > 5-m-long sediment cores from Cascade Lake (68.38° N, 154.60° W), Arctic Alaska, were analyzed to quantify their paleomagnetic properties over the past 21,000 years. Alternating-field demagnetization of the natural remanent magnetization, anhysteretic remanent magnetization, isothermal remanent magnetization, and hysteresis experiments reveal a strong, well-defined characteristic remanent magnetization carried by a low coercivity magnetic component that increases up core. Maximum angular deviation values average < 2°, and average inclination values are within 4° of the geocentric axial dipole prediction. Radiometric ages based on 210Pb and 14C were used to correlate the major inclination features of the resulting paleomagnetic secular variation (PSV) record with those of other regional PSV records, including two geomagnetic field models and the longer series from Burial Lake, located 200 km to the west. Following around 6 ka (cal BP), the ages of PSV fluctuations in Cascade Lake begin to diverge from those of the regional records, reaching a maximum offset of about 2000 years at around 4 ka. Several correlated cryptotephra ages from this section (reported in a companion paper by Davies et al., this volume) support the regional PSV-based chronology and indicate that some of the 14C ages at Cascade Lake are variably too old.

scholarly journals Plio-Pleistocene paleomagnetic secular variation and time-averaged field: Ruiz-Tolima volcanic chain, Colombia

2016 ◽  
Vol 17 (2) ◽  
pp. 538-549 ◽  
Author(s):  
A. Sánchez-Duque ◽  
V. Mejia ◽  
N. D. Opdyke ◽  
K. Huang ◽  
A. Rosales-Rivera
Keyword(s):  
Secular Variation ◽  
Volcanic Chain ◽  
Paleomagnetic Secular Variation
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