Magnetostratigraphy of Plio-Pleistocene sediments in a 1700-m core from Osaka Bay, southwestern Japan and short geomagnetic events in the middle Matuyama and early Brunhes chrons

Biswas, D.K; Hyodo, Masayuki; Taniguchi, Yousuke; Kaneko, Masanori; Katoh, Shigehiro; Sato, Hiroshi; Kinugasa, Yoshihiro; Mizuno, Kiyohide

doi:10.1016/s0031-0182(98)00185-0

Cited by 77 publications

(59 citation statements)

References 31 publications

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“…Assuming a constant accumulation rate between the lower Jaramillo and M-B boundaries and extrapolating this rate downward, Li et al (1997) dated this excursion at 1.537-1.551 Ma and further correlated it to the "Stage 54" event. Biswas et al (1999) also recognized a middle Matuyama event from the 1700-m Osaka Bay core. Based on a constant accumulation rate of 61 cm/ka between the upper Olduvai boundary and CM, this event was estimated at 160-1.62 Ma.…”

Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 96%

“…Based on a constant accumulation rate of 61 cm/ka between the upper Olduvai boundary and CM, this event was estimated at 160-1.62 Ma. Biswas et al (1999) correlated it with the "Stage 54" event.…”

Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 97%

“…Another characteristic of the Sangiran excursion is its long-term persistence. Assuming a constant accumulation rate between the Jaramillo and Olduvai subchronozones of the geomagnetic polarity timescale (GPTS) of Cande and Kent (1995), Biswas et al (1999) re-estimated its age range from 1.50 to 1.62 Ma. Consequently, the E2 excursion in the present study may only record one stage of the Sangiran excursion.…”

Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 99%

“…The E3 in the lower Olduvai subchron and E6 in the early Matuyama Chron have no comparable events. At present they can only be correlated with the anomalous directions observed in the Osaka Bay core (Biswas et al, 1999). Therefore, further investigations are necessary to support their global occurrences.…”

mentioning

confidence: 92%

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Early and middle Matuyama geomagnetic excursions recorded in the Chinese loess-paleosol sediments

et al. 2007

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A detailed paleomagnetic and rock-magnetic investigation on the early and middle Matuyama loess-paleosol sediments has been carried out at the Baoji section, Shaanxi province, southern Chinese Loess Plateau. Our new magnetostatigraphy revises the position of the lower Olduvai boundary from L27 to S26. Seven shortlived geomagnetic excursions, tentatively named as E1, E2, E3, E4, E5, E6, and E7, have been recognized in the L13, S22, L26, L27, S29, and upper and middle parts of L32, respectively. Results of the anisotropy of low-field magnetic susceptibility (AMS) show that the studied loess-paleosol sediments retain the primary sedimentary fabric. Rock magnetic experiments reveal that the sediments from the excursional and polarity transitional intervals have the same magnetic characteristics as those from the surrounding normal and reversed polarity intervals. Assuming a constant accumulation rate between polarity boundaries, these seven excursions are estimated to be at about 1.11 Ma (E1), 1.58 Ma (E2), 1.92 Ma (E3), 2.11 Ma (E4), 2.25 Ma (E5), 2.35 Ma (E6), and 2.42 Ma (E7) Ma. The E1 and E2 in the middle Matuyama Chron can be correlated with the Punaruu and Stage 54 (Gilsa) excursions, respectively. The E4, E5, and E7 in the early Matuyama Chron can be correlated with the Réunion II, Réunion I, and cryptochron C2r.2r-1 (X-subchron), respectively. The E3 in the lower Olduvai subchron and E6 in the early Matuyama Chron have no comparable events. At present they can only be correlated with the anomalous directions observed in the Osaka Bay core (Biswas et al., 1999). Therefore, further investigations are necessary to support their global occurrences. The present result together with the two late Matuyama excursions dated at about 0.89 Ma and 0.92 Ma (Yang et al., 2004) show that the Baoji section yields at least nine Matuyama excursions which, along with the results of the study, suggests that eight excursions occur at 0.9-2.2 Ma (Channell et al., 2002), thereby providing evidence that the short-lived geomagnetic excursions may also be a basic characteristic of the geomagnetic field during the Matuyama Chron.

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Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 96%

Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 97%

Section: Stage 54 (Or Gilsa) Excursion (E2)mentioning

confidence: 99%

mentioning

confidence: 92%

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Early and middle Matuyama geomagnetic excursions recorded in the Chinese loess-paleosol sediments

et al. 2007

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“…Champion et al (1981) dated the event to be 630-640 ka using 730 ka for the Brunhes/Matuyama boundary. More recent investigations (Biswas et al, 1999) places Delta event at about 690 ka. Carcaillet et al (2004) found three VDM (virtual dipole moment) minima between 750 and 500 ka, the oldest (about 700 ka) being identified as Delta excursion.…”

Section: Resultsmentioning

confidence: 96%

Paleomagnetism of the Pleistocene Tequila Volcanic Field (Western Mexico)

et al. 2006

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This paper presents new paleomagnetic results from 24 independent cooling units in Tequila area (western Trans-Mexican Volcanic Belt). These units were recently dated by means of state-of-the-art 40 Ar-39 Ar method (Lewis-Kenedy et al., 2005) and span from 1130 to 150 ka. The characteristic paleodirections are successfully isolated for 20 cooling units. The mean paleodirection, discarding intermediate polarity sites, is I = 29.6• ,• , n = 17, which corresponds to the mean paleomagnetic pole position P lat = 85.8• , P long = 84.3• , K = 27.5, A 95 = 6.9• . These directions are practically undistinguishable from the expected Plestocene paleodirections, as derived from reference poles for the North American polar wander curve and in agreement with previously reported directions from western Trans-Mexican Volcanic Belt. This suggests that no major tectonic deformation occurred in studied area since early-middle Plestocene to present. The paleosecular variation is estimated trough the study of the scatter of virtual geomagnetic poles giving S F = 15.4 with S U = 19.9 and S L = 12.5 (upper and lower limits respectively). These values are consistent with those predicted by the latitude-dependent variation model of McFadden et al. (1991) for the last 5 Myr. The interesting feature of the paleomagnetic record obtained here is the occurrence of an intermediate polarity at 671 ± 13 ka which may correspond the worldwide observed Delta excursion at about 680-690 ka. This gives the volcanic evidence of this event. Two independent lava flows dated as 362 ± 13 and 354 ± 5 ka respectively, yield transitional paleodirections as well, probably corresponding to the Levantine excursion.

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Mid‐Brunhes magnetic excursions in marine isotope stages 9, 13, 14, and 15 (286, 495, 540, and 590 ka) at North Atlantic IODP Sites U1302/3, U1305, and U1306

Channell

2017

Geochem Geophys Geosyst

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Integrated Ocean Drilling Program (IODP) Site U1302/3 (Orphan Knoll, off Newfoundland) recorded magnetic excursions in marine isotope stages (MIS) 9a (at 286 ka) and 13a (at 495 ka). Sites U1306 and U1305 (Eirik Drift, off SE Greenland) record excursions in MIS 14a/b (at 540 ka) and 15b/c (at 590 ka). In the excursion intervals, magnetic measurements of continuous “u‐channel” samples from multiple holes within site are augmented by measurements of cubic (8 cm3) discrete samples. The excursions lie in relative paleointensity (RPI) minima at each site and in RPI reference stacks, and correspond to dated intervals of 10Be overproduction in other deep‐sea sediment records. Although observed at multiple holes at each site, and from u‐channel and discrete samples, the excursions are not observed at all three sites, and often at only one of the three sites. Sporadic recording of these magnetic excursions, and excursions in general, is attributed to a combination of filtering by the process of acquisition of detrital remanent magnetization (DRM), postdepositional overprint of weak excursion magnetizations, the millennial or even centennial duration of directional excursions, and nonuniform sedimentation rates at these timescales in North Atlantic sediment drifts.

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Magnetostratigraphy of Plio-Pleistocene sediments in a 1700-m core from Osaka Bay, southwestern Japan and short geomagnetic events in the middle Matuyama and early Brunhes chrons

Cited by 77 publications

References 31 publications

Early and middle Matuyama geomagnetic excursions recorded in the Chinese loess-paleosol sediments

Early and middle Matuyama geomagnetic excursions recorded in the Chinese loess-paleosol sediments

Paleomagnetism of the Pleistocene Tequila Volcanic Field (Western Mexico)

Mid‐Brunhes magnetic excursions in marine isotope stages 9, 13, 14, and 15 (286, 495, 540, and 590 ka) at North Atlantic IODP Sites U1302/3, U1305, and U1306

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