Rock magnetic and paleointensity results from Mesozoic baked contacts of Armenia

Abstract

Samples were obtained from three baked contacts and one lava flow along the upper Turonian-lower Coniacian Tovuz section, two baked contacts along the upper Coniacian-lower Santonian Paravakar section in the northern part of Armenia, and three baked contacts along the Titonian-Valanginian Kafan section in southern Armenia. A total of 130 samples were studied. Updated mean paleomagnetic poles were calculated for the Upper Cretaceous Tovuz-Paravakar sections (65.6• N, 162.2 • E, A 95 = 4.3, paleolatitude = 27.0 ± 3.4• ) and the Upper JurassicLower Cretaceous Kafan section (61.7• N, 158.9• E, A 95 = 4.8• , paleolatitude = 24.7 ± 3.8 • ). Paleointensity determinations could be estimated from two of the upper Cretaceous and three of the Upper Jurassic-Lower Cretaceous baked contacts, corresponding to a 30% success rate. The mean virtual dipole moments obtained were low (1.7-5.5 × 10 22 A m 2 ), which is in agreement with data published by Solodovnikov (1981a, 1983) for the same sections (3.0-4.4 × 10 22 A m 2 ). Our results support the hypothesis of the Mesozoic Dipole Low, even though the overall data are widely dispersed.

Paleointensity results from the Jurassic: New constraints from submarine basaltic glasses of ODP Site 801C

“…We converted these average inclinations to equivalent paleolatitudes (). In some cases (e.g., Kafan of Shcherbakova et al [2009], Shampandin and Tocopilla), the two paleolatitudinal estimates are in excellent agreement, while others (e.g., North Caucasus, Sani Pass, and Kerfone) are different by more than 10…”

“…The IAGA paleointensity database of Perrin and Schnepp [2004] was updated and put into the MagIC database by Tauxe and Yamazaki [2007]. That so-called PINT06 compilation included these references for the Jurassic time period: Kosterov et al [1997] Shcherbakova et al [2009]. In addition to these, Morales et al [2003] has apparently heretofore been overlooked for inclusion in the PINT or MagIC databases.…”

Paleointensity results from the Jurassic: New constraints from submarine basaltic glasses of ODP Site 801C

“…The most recent update, announced by Biggin [] and available for download at: http://earth.liv.ac.uk/pint/, added Shcherbakova et al . []. In addition to these, Morales et al .…”

Palaeointensity and palaeomagnetic study of Cretaceous and Palaeocene rocks from Western Antarctica

“…Summary of Palaeocene and Cretaceous VDMs from this study and from published sources obtained by the Thellier method and selected by the criteria (b) and (c). The data from Brandt et al (2009);Carvallo et al (2004); Cejudo Ruiz et al (2006Ruiz et al ( , 2009 ;Cottrell & Tarduno (2000); Goguitchaichvili et al (2002bGoguitchaichvili et al ( , 2004Goguitchaichvili et al ( , 2008; Granot et al (2007); Juarez et al (1998); Kosterov et al (1998); Qin et al (2011);Riisager et al (1999Riisager et al ( , 2001Riisager et al ( , 2004; Riisager & Abrahamsen (2000); Riisager et al (2002); Selkin & Tauxe (2000); Shcherbakova et al (2007Shcherbakova et al ( , 2008Shcherbakova et al ( , 2009Shcherbakova et al ( , 2011Sherwood et al (1993); Shi et al (2005); Smirnov & Tarduno (2003); Tanaka & Kono (2002); Tarduno et al (2001;; Tarduno & Cottrell (2005); Tauxe (2006); Tauxe & Staudigel (2004); Tsunakawa et al (2009);Zhao et al (2004); Zhu et al (2001Zhu et al ( , 2003Zhu et al ( , 2004aZhu et al ( ,b,c, 2008 passed the more strict selection criteria (c) which includes the presence of successful pTRM check procedure and they are marked with crosses. The data taken from Ade-Hall et al (1968);Bol'shakov &a...…”