Temporal variation of Holocene Osaka Bay conditions estimated from a core in off-Kobe.

Masuda, Fujio; Miyahara, Basara; Hirotsu, Jyunji; Irizuki, Toshiaki; Iwabuchi, Yo; Yoshikawa, Syusaku

doi:10.5575/geosoc.106.482

Cited by 27 publications

(28 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They also conducted high density radiocarbon dating of molluscan shells, downcore in a single bore hole core at Kitatsumori in the Osaka Plain. Masuda et al (2000) suggested that a peak in sea level occurred in Osaka Bay at ca. 5,300-5,000 cal yrs BP.…”

Section: Introductionmentioning

confidence: 99%

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

et al. 2001

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

et al. 2001

Self Cite

View full text Add to dashboard Cite

“…In the outer bay area of the western Osaka, the transgressive surface is found off Kobe at -51 m (relative to mean sea level) and its age is 11,000 cal y BP [10]; Off Yumeshima, it is at -37.2 m (10,800 cal y BP) [14]; in Shin-Yodogawa, it is at -22.5 m (9500 cal y BP) [13]; in Yoshino, at the mouth of the Yodo River, it is at -20.0 m (9200 cal y BP) [14]; and in Kitatsumori, Nishinari, it is at -22.0 m (9200 cal y BP) [12].…”

Section: Transgressive Periodmentioning

confidence: 99%

“…Relative sea-level curve for the Osaka Basin [12] and depositional curves on a elevation-age diagram and columnar sections at some borehole sites on the studied area. Curve of 28 is the Off-Kobe [10].…”

Section: Determination Of Depositional Agementioning

confidence: 99%

“…In this study we used well-dated borehole cores with many calibrated 14 C dates obtained by academic research studies [10]- [18]. We also used supplemental data from other boreholes containing the Kikai-Akahoya tephra layer (erupted 7300 cal y BP [19]) [20]- [23] and made accessorily use of uncalibrated 14 [20], and 27: Kyuhouji [20]; as shown in Figure 1.…”

Section: Borehole Sites and Areasmentioning

confidence: 99%

See 1 more Smart Citation

Temporal and Spatial Variations of Accommodation and Sediment Accumulation during Transgressive to Highstand Stages as Reconstructed from a Latest Pleistocene to Holocene Sequence in the Intra-Arc Osaka Basin, Japan

Masuda¹,

Itomoto²

2015

OJG

Self Cite

View full text Add to dashboard Cite

Temporal and spatial variations in accommodation (i.e., paleo-water depth) and sediment accumulation (amount of deposition) in the intra-arc Osaka Basin, Japan, were reconstructed from the post-glacial transgression through the sea-level highstand, a total of 9000 years. At the beginning of the marine transgressive stage (about 11,000 cal y BP), paleo-water depths were shallow and the sediment accumulation was large. The area occupied by Osaka Bay gradually extended and sediment deposition decreased from 11,000 to 6000 cal y BP. During the period of maximum transgression (6000 -5000 cal y BP), an inner bay, Kawachi Bay with a water depth of 5 -10 m, was expanded in the inland eastern Osaka area, and paleo-water depths reached a maximum and depositional rates reached a minimum. During the subsequent highstand and small regression (about 5000 cal y BP to the present), however, deposition increased rapidly as a result of river delta and shoreline progradations. Regional differences were observed in accommodation and accumulation between the outer bay area and the inner bay area. During both the transgressive and regressive stages, deposition decreased in the inner bay area. In contrast, in the outer bay area and in the basin overall, deposition was high during the first part of the transgressive stage but it decreased during the maximum transgression, before reaching a maximum during the subsequent highstand and regression. During the regressive stage, fluvial delta progradation led to the forma-

show abstract

“…2a Map showing the areas of reported sea-level lowering corresponding to the Yayoi regression , including the location where the event was first recognized, in the Japanese Islands. Data sources: Saroma Lake (Hirai, 1987a), Furen Lake (Ohira et al, 1994), Akkeshi Lake (Shigeno et al, 2013), Iwaki River (Umitsu, 1974, Rikuzentakata Plain (Chida et al, 1984), Sendai Plain (Matsumoto et al, 2005), Toyama Bay (Fujii, 1992), Hokuriku coast (Fuji, 1975;Fuji and Nagai, 1997), Wakasa Bay (Okada, 1978(Okada, , 1984, Tonegawa Lowland (Chiba et al, 2016; this study), Kujukuri Plain (Moriwaki, 1979), Tokyo Bay (Endo et al, 1989;Ishihara, 2013), Otagawa Lowland (Fujiwara et al, 2015), Toyokawa Plain (Iseki, 1963), Yahagigawa Lowland (Kawase, 1998), Nobi Plain (Furukawa, 1972;Umitsu, 1994;Ono, 2004), Osaka Bay (Masuda et al, 2000), Harimanada coast (Naruse et al, 1985), Sanin coast (Toyoshima, 1978), Hibikinada coast (Ono, 1975), Fukuoka Plain (Shimoyama et al, 1991, and Ariake Bay (Ariake Bay Research Group, 1965). Potamocorbula sp.…”

mentioning

confidence: 99%

利根川低地における「弥生の小海退」の検証

晋

和明

新

et al. 2016

Jour. Geol. Soc. Japan

View full text Add to dashboard Cite

The so-called Yayoi regression in Japan is known as a relative sea-level lowering to m below T.P. (Tokyo Peil; Mean Sea Level of Tokyo Bay) during -cal kyr BP. However, the regions where this event occurred in the Japanese Islands and its continuous sea-level index points from verified regions have yet to be clarified. Lake sediments beneath the Innermost Tonegawa Lowland, deposited in response to a sea-level rise during -cal kyr BP, indicate a paleo-water depth of ca. -m. The sea-level index points of the lake sediments indicate that the sea level dropped to . m T.P. at . cal kyr BP, while the paleo-water depth estimated from plant macrofossils in the sediments is m. The amount of sea-level lowering is greater than the sediment compaction effect; moreover, no large tectonic movements have affected the region over the past years. These results demonstrate that the Yayoi regression occurred in the Innermost Tonegawa Lowland and that isostatic movements triggered by sediment loading might have brought about the observed lowering of sea level.

show abstract

Temporal variation of Holocene Osaka Bay conditions estimated from a core in off-Kobe.

Cited by 27 publications

References 0 publications

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

Vertical Changes of Holocene Ostracodes in Bore Hole Cores from off Kobe, Related to the Opening of Straits and Relative Sea-Level Change in Western Japan.

Temporal and Spatial Variations of Accommodation and Sediment Accumulation during Transgressive to Highstand Stages as Reconstructed from a Latest Pleistocene to Holocene Sequence in the Intra-Arc Osaka Basin, Japan

利根川低地における「弥生の小海退」の検証

Contact Info

Product

Resources

About