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全文: "熱田台地"
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  • 井関 弘太郎, 幸島 荘八郎
    地理学評論
    1959年 32 巻 9 号 457-468
    発行日: 1959/09/01
    公開日: 2008/12/24
    ジャーナル フリー
    標準貫入試験をともなう100本以上の試錐をもとにしたわれわれの研究により,濃尾平野海岸地帯の冲積層の下には3段の侵蝕面のあることがわかつた.(1)現海面下0~10mにある上位面は,濃尾平野の南東部にみられる.この面は冲積世中期以後に形成された海蝕棚と思われる.(2)地表面下20~30mにある中位面は,海面が現在のそれより約40m低位にあつた洪積世後期に,河川侵蝕により形成されたものと思われる.(3)下底面は同平野の西部にみられ,現海面下40~55mにある.この面は,最終氷期の最低位海面時における,冲積世前木曽川穿入谷の谷底である.
    濃尾平野における上記の埋没地形は,京浜地方および浜松地方におけるそれと一致し,またH. N. Fiskが研究したミシシツピー下流部冲積谷とも非常によく似ている.
    これらの地域における地形の類似性は,それらの地形が洪積世後期ないしはその後における海面の変動に制約されていることを暗示している.これらの地形の存在は,洪積世後期における海面が次のような過程で変化したことを示したことを示している.(1) 洪積世の高位海面期後,海面は現海面下30~40mの深さまで低下した(A期).(2) つぎに洪積世後期の最低水準まで,海面はふたたび低下した(B期).
    埋没支谷の上流部まで回春がおよばなかつたことからみて,穿入谷の存続期間は比較的短期間に限られていたことは明らかである。A期はB期より短かかつたと思われる.
  • 高木 不折
    日本地質学会学術大会講演要旨
    1999年 1999 巻
    発行日: 1999/10/05
    公開日: 2017/08/24
    会議録・要旨集 フリー
  • 平野 弘道
    日本地質学会学術大会講演要旨
    1999年 1999 巻
    発行日: 1999/10/05
    公開日: 2017/08/24
    会議録・要旨集 フリー
  • 牧野内 猛, 塚本 将康, 檀原 徹, 山下 透, 内園 立男, 濃尾地盤研究委員会断面WG
    地質学雑誌
    2013年 119 巻 5 号 335-349
    発行日: 2013/05/15
    公開日: 2013/09/28
    ジャーナル フリー
    濃尾平野東部において,南北約31 kmの地質断面図の作成と泥質堆積物のテフラ分析によって,地下地質の特徴や解明すべき課題が明らかになった.それらは,①軽石を含む砂層からなる熱田層上部(D3U)には2枚の泥層挟在層準がある.②海成粘土層からなる熱田層下部(D3L)には,平野西部の臨海部地下から検出された長島テフラ(BT36, B75-2)が挟まれる.長島テフラは,平野東部ではD3Lの上部,西部では下部に挟まれ,挟在層準が大きく異なる.この差異が何を意味しているのか,今後の課題である.③東部のD3Lは西部に劣らない層厚を有している.④海部・弥富累層には,Ata-Thの降灰層準を含む厚い海成粘土層(Dmc-m)が挟まれる.⑤濃尾傾動運動による沈降が平野西部より小規模であったと想定される東部において,厚いD3LやDmc-mの挟在が何を意味するのか,これも今後の課題である.
  • 井関 弘太郎, 森山 昭雄, 藤井 昭二
    第四紀研究
    1982年 21 巻 3 号 145-151
    発行日: 1982/10/31
    公開日: 2009/08/21
    ジャーナル フリー
    By means of the analysis of many boring cores collected by the Authority of Nagoya Port, the authors studied the geology and stratigraphy of recent alluvial deposits and made clear the buried topography beneath the southern part of the Nobi Plain. As a result, following conclusions were induced.
    The basal topography beneath the recent alluvial deposits is classified into four buried geomorphological surfaces in descending order, 1) the buried wave-cut platform (shallower than -15m), 2) the buried surface of the Atsuta terrace, 3) the buried surface of the Toriimatsu terrace and 4) the buried valley bed. Recent alluvial materials upon the basal gravel beds are divided into four beds in acending order, 1) the Lower Sands, 2) the Middle Muds, 3) the Upper Sands and 4) the Top Muds, The Lower Sands (a so-called Nobi Formation) were deposited in the late glacial time as the foreset bed of delta, their ages are about 18, 000 to 13, 000y.B.P, by 14C dating. The Middle Muds (20 to 10m thick) were deposited as the bottomset bed of delta in the extended Ise Bay of the Holocene transgression time and their 14C dating ages are about from 9000 to 5000y.B.P. containing the Akahoya volcanic ash layer (Ah). The Upper sands were deposited as progressing foreset bed of delta after the age of the maximum sea level of Holocene transgression. The age of this deposition around the Nagoya harbour is 2500 or 2000y.B.P. The Top Muds along the coastal district are the artificial earth materials on reclaimed lands.
  • 笹尾 光
    コンクリート工学
    1992年 30 巻 4 号 33-42
    発行日: 1992/04/01
    公開日: 2013/04/26
    ジャーナル フリー
    本報文は, 国内で初めて本設地盤アンカーを超高層建物に適用した例を紹介するものである。多くの集合住宅に見られるように, 「ザ・シーン徳川園」の平面は日影の関係から建物の隅を切り欠いた点対称の雁行型となっている。このような建物では地震を受けたとき, 特定の柱脚に大きな引抜き力が生じて柱荷重だけでは押さえられないことがある。この外力に対する抵抗要素として, 最近は本設地盤アンカーが用いられるようになった。「ザ・シーン徳川園」では2次レベルの地震に対する安全性を確保するために, 8本のアンカーが適用された。
  • 大矢 雅彦
    地理科学
    1998年 53 巻 2 号 134-135
    発行日: 1998/04/28
    公開日: 2017/04/20
    ジャーナル フリー
  • 牧野内 猛, 檀原 徹, 森 忍, 竹村 恵二
    日本地質学会学術大会講演要旨
    2000年 2000 巻 P-47
    発行日: 2000/09/25
    公開日: 2017/08/24
    会議録・要旨集 フリー
  • 吉田 史郎
    日本地質学会学術大会講演要旨
    2000年 2000 巻 P-46
    発行日: 2000/09/25
    公開日: 2017/08/24
    会議録・要旨集 フリー
  • 海津 正倫
    堆積学研究会報
    1992年 36 巻 36 号 47-56
    発行日: 1992/05/15
    公開日: 2010/05/27
    ジャーナル フリー
    The Kiso river delta locates in the southern part of the Nobi plain, central Japan. Evolution of the delta has been strongly influenced by post-glacial sea-level changes, and landforms of the delta changed remarkably during the Holocene. Holocene sediments of the delta can be classified into the lower sandy, middle muddy, upper sandy and -uppermost terrestrial units.
    Silty or sandy transitional zones can be recognized in the upper and lower horizones of the middle muddy units by means of a particle size analysis. Sediments of the transitional zones are considered to be deposited between the foreset and bottom set beds of the delta as delta front sediments.
    Based on the 14C ages and characteristics of the sedimentary facies, Holocene sequence and evolution of the Kiso river delta are considered as follows.
    The post glacial transgression in the early Holocene (10000-8500 years BP) was slow, and in this slow transgressive stage, the lower sandy unit deposited as the flood plain sediments. During the rapid transgressive stage in the period between 8500-6500 years BP, the lower Kiso river delta submerged and the coast line retreated towards the central part of the present Nobi plain. Lower sandy unit deposited as a foreset bed of the Kiso river delta in the rapid transgressive stage.
    In the middle Holocene, muddy sediments of the middle unit deposited as a bottom set bed, and the sandy sediments deposited aggradationally in the innermost part of the embayment as a foreset bed of the Kiso river delta. The delta was in the central part of the present Nobi plain. This aggradational stage was in the period between 6500-5500 years BP. Following the culmination of the post glacial transgression since 5500 years BP, the Kiso river delta has advanced towards the southern direction. In this progradational stage, the upper sandy unit deposited progradationally as a foreset bed of the Kiso river delta. Surface of the delta has been covered with flood plain sediments as the uppermost terrestrial unit, and the delta front has advanced towards the present coastline. During the periods of ca. 5000-4500 years BP and ca. 3000-2000 years BP, slight regressions of the sea-level can be seen in the Kiso river delta region.
  • 春山 成子, 大矢 雅彦
    地理学評論 Ser. A
    1986年 59 巻 10 号 571-588
    発行日: 1986/10/01
    公開日: 2008/12/25
    ジャーナル フリー
    隣り合って流れる庄内川,矢作川の河成平野の地形分類図を作成した.地形要素の組合わせは庄内川は小型自然堤防+高位デルタ+低位デルタ,矢作川は扇状地的自然堤防+高位扇状地的デルタ+低位扇状地的デルタとなっており,著しい地域差が見られた.
    この原因を次のように考えた. (a) 矢作川は高度分布,高度分散量,起伏量平均値共に大きく,かつ風化しやすい花崩岩からなるため,山地崩壊が庄内川より大である. (b) 庄内川は河川縦断勾配が緩でかつ盆地,峡谷の繰り返しとなっており,下流平野へ流下する砂礫量は矢作川より少ない. (c) 縄文海進時に堆積した海成層上の河成沖積層の厚さは庄内川平野の方が薄い. (d) 氾濫原の幅は庄内川平野では上,中流は狭く,下流は広い.このため,上,中流では河道変遷は少なく,洪水は集中型となるが,下流は変遷が大きく,溢流型となる.矢作川は氾濫原の幅の変化は少なく,洪水は平野上流側はショートカット型,下流側は盗流型となっている.
  • 海津 正倫
    地理学評論
    1979年 52 巻 4 号 199-208
    発行日: 1979/04/01
    公開日: 2008/12/24
    ジャーナル フリー
  • 多賀 直恒, 安東 直, 宮崎 正
    日本建築学会論文報告集
    1978年 272 巻 63-73
    発行日: 1978/10/30
    公開日: 2017/08/22
    ジャーナル フリー
    本報告は, 都市防災計画の一資料を提供する目的と併せて既往の耐震工学上の知見を総合的に概観し総括する一つのアプローチを示す為に, 地震動特性・地盤構成条件・構造物の特性の関連に於いて, 地震動災害を求め, 地域的分布を評価した。推定の方法は, 問題の複雑さや, 現象の不明確さ等の為に, 多くの問題点を含むが, 一応全体の系として, 考慮すべき事項を網羅し, その上で予測解析系全体を設定した。解析結果の地盤・構造物の各種被害性状を, 数値・棒グラフ, 又は, Zoning Mapの形で地域的分布を求め, 地震動災害に及ぼす, 地震動特性・地盤構成条件の問題を, 或る程度, 定量的に示した。得られた結果を要約すると1)地震動特性・地盤構造条件・構造物の構造特性を考慮した地震応答の推定に関する1アプローチを示した。2)地震時地表面加速度は, 特に表層地盤の構成と物性に関係するが, 弾性挙動は中でも沖積層厚さに依存する。3)木造構造物の被害地域は, 沖積平地で著しく, 洪積台地等, 地盤条件の硬い所では殆んど皆無である。これは, 近地・遠地の地震動特性に若干の地域的差が生じる程度である。4)同一siteでの近地・遠地地震による被海の模様は, 遠地地震が, 長い周期の方で大きい値を示す。5)被害率と沖積層厚さの関係は, 余り明確ではないが, Damage Potentialとの相関から, 地盤と構造物の周期特性の一致する所で被害程度が大きいようである。6)過去の被害地震との比較対応は, 一方は全体被害であるのに対し, 他方は振動のみによるものであるので, 直接は比較出来ないが, 大略の傾向, オーダーは対応していると考えられる。
  • 地理学評論 Ser. A
    1998年 71 巻 4 号 307-310,313
    発行日: 1998/04/01
    公開日: 2008/12/25
    ジャーナル フリー
  • 加藤 芳朗
    日本土壌肥料学雑誌
    1970年 41 巻 3 号 89-94
    発行日: 1970/03/25
    公開日: 2017/06/28
    ジャーナル フリー
  • 小林 国夫
    第四紀研究
    1963年 3 巻 1-2 号 110-122
    発行日: 1963/09/20
    公開日: 2009/08/21
    ジャーナル フリー
    The Central Region including the so-called “Fossa Magna”-a Tertiary orogenic belt in Central Japan has been a field of intensive volcanisms since Miocene. Many volcanoes inside and outside the belt have supplied a vast amount of tephras through Quaternary times. In this territory, pyroclastc flows and volcanic mudflows as well as tephras of aeolian origin are usable as index horizons for the correlation of geomorphic surfaces and geological sediments and so on.
    (1) In the valleys of Ina, Kiso, Matsumoto and Suwa is well developed a type of tephraic section of which materials have been supplied from Ontake and Norikura Volcanoes. The section is composed of three or four tephra units as mentioned in the following:
    i) Hata or the Younger Loam (tephra) unit: The upper part may postdate the Late Würmian glaciation, and the lower part is dated roundly a little younger than 30, 000 14C yr. B. P. The Palaeolithic cultural layers are to be placed in the upper horizons of Hata Loam and its equivalents.
    ii) Osakada or the Middle Loam unit: Pumiceous, tephrochronologically equivalent to the upper part of the Atsuta (marine) formations which have hitherto been considered as the deposits during the time of Riss/Würm Interglacial higher sea-level.
    iii) The Older Loam unit: In Ina valley, Older Loam underlies Osakada Loam with less appreciable hiatus. A distinguished red pumice bed called “Pm-0”, which is often recognized within the fluviatile gravel beds in Ina valley, seems to mark the lower horizon of Older Loam. Much clayey.
    iv) Nishibayashi Loam: At the top is a sign of subaerial weathering giving an evidence of the existence of stratigraphic break before the deposition of Osakada Loam. Much clayey. It is problematic whether the Loam might be a product mainly of tephra falls. Clay mineralogical content consists of the mixed type of halloysite, illite and 14Å minerals.
    (2) Our knowledges about the tephras from Yatsugatake Volcanoes have not yet been detailed. The author is now examining heavy mineral compositions of the tephras as shown in Fig. 5. The Lower Loam unit is characterized by the excessive amount of magnetite, and presence of hornblende including oxyhornblende. The Middle Loam is pumiceous aud especially so in the lowest horizon. As seen in Fig. 5, a pumiceous horizons with a peculiar appearance and called “Uridane-gata-Fuseki So” (the word Uridane means the seeds of cucumber) occurring the middle part of Middle Loam is doubtlessly considered as exotic material, which is assigned to the pumice grains from Ontake Volcanoes. The modes of occurrence of these Loam units upon fluviatile terraces are discussed in the text.
    (3) The Late Pleistocene activity of Tateyama Volcanoes supplied tephras in the north-wastern part of Shinshu or Nagano Prefecture. The tephraic section is marked by two pumiceous horizons, of which the lower one is in the lowest part of the Middle Loam unit and contains more amount of hypersthene and less amount of common hornblende and magnetite compared with the upper pumiceous horizon. The tephra covering the mudflows of Midagahara and appearing to be younger in age, is characterized by a moderate amount of oxyhornblende. Our tephrochronologic studies on the glacial age of Mt. Shirouma and the time of terrace formation along the Matsukawa running down the mountain slope are now in progress.
    (4) Tephraic horizons consisting of tuff and/or pumice grians are recognized in the marine beds on the Pacific coast of Central Japan. Their geologic ages seem to be different with one another but all of them contain much or a moderate amount of hornblede perhaps due to the activity of some acidic volcanisms. For the purpose of correlation, more elaborate inspection of the mineralogical nature of constituent materials of the tephras will be needed.
  • 小林 国夫
    第四紀研究
    1962年 2 巻 2-3 号 91-99
    発行日: 1962/03/31
    公開日: 2009/08/21
    ジャーナル フリー
    There have been hitherto supplied not a few discussions if the fluviatile terraces around the Japan Alps and other high mountains in Japan, could be of the origination during the glacial phase. It is true that the Pleistocene topographic landscapes are notably characterized by the well-developed fluviatile terraces standing along inland rivers.
    In basins and valleys around the Japan Alps is recognized a wide extension of the fill top terraces which seems to indicate the former existence of a time when a vast amount of detritus filled up these lowlands.
    Taking advantages of the modes of occurrence of the tephra-layers as the key beds of correlation, the author has reached a conclusion that the valley filling above-mentioned might perhaps have taken place during the 3rd Interglacial, as is shown in the suggested correlation put in Table 1.
    These facts seem to imply that the accumulation terracing in these basins and valleys around the Japan Alps have never been influenced seriously by the climatic deteriolation, accordingly that even during the glacial maximal phase, the territory the author has concerned with could by no means be assigned to the periglacial or the proglacial morphogenetic region.
  • 井関 弘太郎, 磯 望, 小林 茂
    地理学評論 Ser. A
    1988年 61 巻 3 号 281-289
    発行日: 1988/03/01
    公開日: 2008/12/25
    ジャーナル フリー
    In recent years, the links between geography and archaeology are developing rapidly in Japan. The results in physical geography including those of geomorphology, tephrochronology, and palynology are utilized widely for archaeological research, and various data derived from excavations present important informations to physical geographers. At the field of historical geography in which the relation to archaeology have been traditionally close, the chance of intimate contact of the researchers are increasing along with a augmentation of the excavations of historical sites. In addition the resuls of locational analysis in human geography attract attention of archaeologists, and some of them begin to apply the models for studies of the distribution of sites and artefacts
    The aim of this symposium is to examine the developing relationship between geography and archaeology, and to search for future directions of their collaborations. For this purpose the organizers made request participation to archaeologists of Kyushu area, which is not not only the place of the symposium but also one of the important centers of archaeological research in Japan.
    The following papers were presented,
    S. Uemoto and T. Midoshima: An experiment on the movement of artefacts with periglacial process
    K. Mitsui: An estimation of alluvial sedimentation making use of archaeological evidence
    M. Umitsu: The relation between landform changes and prehistoric site locations in Nobi Plain, central Japan
    M. Takahashi: The development in landform and land use since the end of the Jomon Era
    S. Yamazaki: Locations and forms of paddy fields in early stage of rice cultivations in northern Kyushu
    R. Kinoshita: A search of the relics of ancient road with air-photographs
    Y. Ishimatsu: The location of hill top castle of Korean type in Dazaifu
    Y. Matsunaga, Y. Tanaka, and N. Doi: An analysis on the distribution of a type of figured earthenware in the middle of Jomon Era
    Y. Yasuda, Y. Kasahara and S. Fujisawa: A great environmental change occurred at 5, 000 years ago
    After the presentation of papers and comments, H. Iseki (chief organizer) reviewed the history of the relation between geography and archaeology in Japan, and summarized the subjects of discussion. Following Iseki's speech a number of topics including methodology, environmental changes, and human use of lands were discussed with many participants. Finally Prof. K. Yokoyama (Kyushu University) made a remark on results of the symposium from archaeological point of view.
  • 井関 弘太郎
    地理学評論
    1978年 51 巻 2 号 188-196
    発行日: 1978/02/01
    公開日: 2008/12/24
    ジャーナル フリー
    In recent years, there have developed some studies on sea-level changes during the Late Holocene in Japan. When reviewed in detail, however, the results of those studies are found consisting of two cases; one case for a curve-drawing in favor of the Fairbridge curve, and the other for that in favor of the Shepard curve by making different assumptions about the process of crustal movements. This is also true even when the same area is chosen as an objective of those studies. This shows that in Japan where crustal movements have been great, studies about crustal movements themselves must be important in order to investigate ecstatic sea-level changes.
    Nevertheless, there are in them some common points concerning the height of the past sea-level changes. One is that the sea-level changs at the last glaciation maximum (about 18, 000 B. P.) are thought to have ben about 140 meters below the present sea-level, judging from the depth of the bottom in some buried valleys which can be found throughout Japan. Another is that, judging from the depth of th bottom in marine silt and clay beds that were accumulated in time of the Flandrian transgression, the sea level at the earliest period of the Holocene is supposed to have been about 40 meters below the present sea level.
    As studis about the recent alluvial formation proceed, there have lately emerged some researchers who insist on sea-level changes in favor of the Shepard curve, while most of the researchers in Japan have reported that the sea level was higher around 6, 000 B. P. than at the present. Although some studies have reported that the sea level fell temporarily and rose again later in some areas, there would be little possibility that the fluctuation was caused by glacial eustasy. It is because it would be almost impossible to assume that the expansion of an ice sheet made the sea level lower at a rate of over 0.1 meter per century. Apart from such fluctuations, traces can be found throughout Japan which indicate that the sea level was two to three meters lower around 2, 000 B. P. than now.
    It would seem to me that future studies in Japan about the sea level, first of all, should consist of finding out regional characteristics of curves for sea-level changes on the continental scale, by eliminating as much influence as possible caused by crustal movements or orogenic movements limited to a comparatively narrow area. It would not be possible, I assume, to investigate eustatic and absolute sea-level changes until we are through with those problems discussed above.
  • 桑原 徹, 牧野内 猛
    地球科学
    1989年 43 巻 6 号 354-365
    発行日: 1989/11/25
    公開日: 2017/06/06
    ジャーナル オープンアクセス
    The clue to and an advance in study of the Nohbi Tilting Basin has a social background of problems caused by landsubsidence in the Nohbi Plain. The Nohbi Tilting Block, a crustal block including the Nohbi Plain in the west to Mt. Sanage in the east, is characterized by Quaternary tilting movement (Figs. 1 & 2). The Nohbi Tilting Basin, which occupies a western half of the Nohbi Tilting Block, was formed by the Nohbi Tilting Block Movement, and is filled with the Quaternary Owari Group. Accompanied with progress of the tilting, the Owari Group was deposited under the control of glacio-eustacy, and is composed of alternating marine sediments during transgression and fluviatile ones during regression (Figs. 4 & 5). Topography of the Nohbi Tilting Block consists of Alluvial plain, uplands (terraces), hills and mountains toward the east (Fig. 3). The western margin is bounded linearly by the Yoro-Ise Bay Fault (Fig. 2). Rivers flowing within the tilted block tend to converge to the western margin (Fig. 3). In the Nohbi Tilting Basin, Quaternary formations related to the tilting dip westwards as a whole. Among these formations, older one inclines with a larger dip, and most of them become thicker and deeper toward the west (Figs. 5 & 6). The estimated rates of the tilting tend to have become larger in younger stage (Table 1). The Nohbi Tilting Block constitutes a part of the Chubu Tilting Block, which is a larger crustal block bounded by the Itoigawa-Shizuoka Tectonic Line on the east and the Tsuruga Bay-Ise Bay Line on the west. The Chubu Tilting Block Movement is a large scaled tilting movement mainly in the Quaternary. Major relief of the eastern part of Southwest Japan is characterized by the morphology of undulation trending in a NNE-SSW direction (Fig. 7). The undulated relief is longer in the western slope and shorter in the east, and is about 80 km in wavelength. Accordingly, the tiltings correspond to movements in the western slope of the undulated relief. Quaternary sedimentary basins such as the Nohbi Tilting Basin have been formed where the trough of Quaternary undulation superimposes on the Neogene sedimentary provinces stretching sub-parallel with the elongation of Southwest Japan.
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