Evaluation of Long-Term Settlement of the Quasi-Overconsolidated Pleistocene Clay Deposits in Osaka Port

Geomechanics ◽  
2005 ◽  
Author(s):  
Mamoru Mimura ◽  
Wooyoung Jang
Keyword(s):  
Clay Deposits

scholarly journals Long-Term Settlement of the Reclaimed Quasi-Overconsolidated Pleistocene Clay Deposits in Osaka Bay

2003 ◽  
Vol 43 (6) ◽  
pp. 141-153 ◽  
Author(s):  
Mamoru Mimura ◽  
Koichi Takeda ◽  
Koji Yamamoto ◽  
Teruyuki Fujiwara ◽  
Woo-Young Jang
Keyword(s):  
Osaka Bay ◽  
Clay Deposits

Case study on long-term ground settlement of reclamation project on clay deposits in Nansha of China

2019 ◽  
pp. 1-16 ◽  
Author(s):  
Wei-Qiang Feng ◽  
Xian-Chang Zheng ◽  
Jian-Hua Yin ◽  
Wen-Bo Chen ◽  
Dao-Yuan Tan
Keyword(s):  
Ground Settlement ◽  
Clay Deposits ◽  
Reclamation Project

A long term evaluation of circular mat foundations on clay deposits using fractional derivatives

2018 ◽  
Vol 94 ◽  
pp. 72-82 ◽  
Author(s):  
Cheng-Cheng Zhang ◽  
Hong-Hu Zhu ◽  
Bin Shi ◽  
Behzad Fatahi
Keyword(s):  
Fractional Derivatives ◽  
Clay Deposits ◽  
Term Evaluation ◽  
Mat Foundations

Holocene development of maritime ombrotrophic peatlands of the St. Lawrence North Shore in eastern Canada

2014 ◽  
Vol 82 (1) ◽  
pp. 96-106 ◽  
Author(s):  
Gabriel Magnan ◽  
Michelle Garneau ◽  
Serge Payette
Keyword(s):  
Early Developmental Stage ◽  
Larix Laricina ◽  
Eastern Canada ◽  
Peat Accumulation ◽  
Lawrence Estuary ◽  
Clay Deposits ◽  
St Lawrence Estuary ◽  
Early Developmental ◽  
Insight Into

AbstractMacrofossil analyses were used to reconstruct long-term vegetation successions within ombrotrophic peatlands (bogs) from the northern shorelines of the St. Lawrence Estuary (Baie-Comeau) and the Gulf of St. Lawrence (Havre-St-Pierre). Over the Holocene, the timing and the ecological context of peatland inception were similar in both regions and were mainly influenced by fluctuations in relative sea level. Peat accumulation started over deltaic sands after the withdrawal of the Goldthwait Sea from 7500 cal yr BP and above silt–clay deposits left by the Laurentian marine transgression after 4200 cal yr BP. In each region, the early vegetation communities were similar within these two edaphic contexts where poor fens with Cyperaceae and eastern larch (Larix laricina) established after land emergence. The rapid transitions to ombrotrophy in the peatlands of Baie-Comeau are associated with particularly high rates of peat accumulation during the early developmental stage. The results suggest that climate was more propitious to Sphagnum growth after land emergence in the Baie-Comeau area. Macrofossil data show that treeless Sphagnum-dominated bogs have persisted over millennia and that fires had few impacts on the vegetation dynamics. This study provides insight into peatland vegetation responses to climate in a poorly documented region of northeastern America.

scholarly journals The constitution, evaluation and ceramic properties of ball clays

Cerâmica ◽  
1998 ◽  
Vol 44 (287-288) ◽  
pp. 88-117 ◽  
Author(s):  
Ian Richard Wilson
Keyword(s):  
United States ◽  
Czech Republic ◽  
The United States ◽  
Fine Grained ◽  
Clay Deposits ◽  
The World ◽  
Ball Clay ◽  
Ball Clays ◽  
White Colour

Ball clay is a fine-grained highly plastic, mainly kaolinitic, sedimentary clay, the higher grades of which fire to a white or near white colour. The paper will review the origin of the term "Ball Clay" and the location and origins of several deposits with particular emphasis on the mineralogical, physical and rheological properties which make the clays so important in ceramics bodies. Particular attention will be paid to the well known bay clay deposits of Devon and Dorset in southwest England, which are mined by ECC International Europe and Watts Blake Bearne & Company PLC, and brief descriptions from elsewhere in the world of ball clays from the United States, Germany, Czech Republic, Thailand, Indonesia, Argentina and China. The evaluation of deposits will be covered along with a description of the main types of ball clay for ceramics with details of the mining, processing and blending techniques which are necessary to ensure long term consistency of products. A brief description in given of the ceramic properties of some Brazilian ball clays. The location of some ball clay deposits is shown in Fig. 1.

scholarly journals Land subsidence of clay deposits after the Tohoku-Pacific Ocean Earthquake

2015 ◽  
Vol 372 ◽  
pp. 211-216 ◽  
Author(s):  
K. Yasuhara ◽  
M. Kazama
Keyword(s):  
Land Subsidence ◽  
Soft Clay ◽  
Eastern Coast ◽  
Excess Pore Pressure ◽  
Case Histories ◽  
Clay Deposits ◽  
Kanto Region ◽  
Tectonic Movements ◽  
Excess Pore

Abstract. Extensive infrastructure collapse resulted from the cataclysmic earthquake that struck off the eastern coast of Japan on 11 March 2011 and from its consequent gigantic tsunami, affecting not only the Tohoku region but also the Kanto region. Among the geological and geotechnical processes observed, land subsidence occurring in both coastal and inland areas and from Tohoku to Kanto is an extremely important issue that must be examined carefully. This land subsidence is classifiable into three categories: (i) land sinking along the coastal areas because of tectonic movements, (ii) settlement of sandy deposits followed by liquefaction, and (iii) long-term post-earthquake recompression settlement in soft clay caused by dissipation of excess pore pressure. This paper describes two case histories of post-earthquake settlement of clay deposits from among the three categories of ground sinking and land subsidence because such settlement has been frequently overlooked in numerous earlier earthquakes. Particularly, an attempt is made to propose a methodology for predicting such settlement and for formulating remedial or responsive measures to mitigate damage from such settlement.

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