+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Quaternary strata in Shikoku Region

, : Quaternary strata in Shikoku Region. Quaternary Research (Tokyo) 31(5): 297-311

The Quaternary strata in Shikoku Region are divided as follows: 1. northern Shikoku; A: Kagawa Prefecture, Ehime Prefecture, B: eastern part of Toyo; C: central part of Chuyo, and D: southwestern part of Nan-yo, 2. central Shikoku along the Yoshino River; E: middle and downstream areas, and F: upper-stream area, and 3. southern Shikoku or Kochi Prefecture; G: southeastern part, H: central part, and I: southwestern part. In these nine subdivided areas, pre-Quaternary to Holocene strata are grouped as follows: 1. The Upper Pliocene to Lower Pleistocene sediments of the pre-terrace formations, located mainly in hill areas, are found in 1-A, 1-D, and 3-G. They include marine sediments distributed along Tosa Bay, and non-marine ones near inland rivers. The strata are conglomerates, sandstones and mudstones, some of which are intercalated with lignite and tephra. 2. The Middle Pleistocene is composed of Higher and Middle terrace deposits which consist of marine and non-marine terraces of higher and middle levels respectively. Higher terrace deposits are rather scarce, and they mainly occur in 1-D and 3-I. They are made of non-marine reddish-brown corroded gravels. The middle terrace deposits are mainly distributed in two areas: marine and non-marine. The marine areas are seen in coastal zones of 3-I, and partly at 1-C. Mud and sand with some marine molluscs and pollen are observed. Non-marine deposits are mainly found along the Yoshino and Shimanto rivers, and at 1-A. 3. The Upper Pleistocene Lower terrace deposits are mainly distributed in 1-A, 3-H and 3-I areas. They include Lower terrace deposits I and II, and are found near the cities of Matsuyama and Kochi. They are composed of fresh gravels underlying Onji (Akahoya) volcanic ash. 4. The Holocene sediments are mainly distributed along large rivers in the Alluvial Plains. They are divided into three parts in the whole Shikoku areas: Lower, Middle, and Upper parts. The Upper and Lower parts are characterized by the coarser facies of non-marine sediments, and the Middle one is characterized by the finer facies of marine sediments, intercalated with Onji (Akahoya) volcanic ash.


Other references

Yamagata, T.; Fujii, M.; Kawakami, T., 2000: Experimental study of surgical adjuvant preoperative-chemotherapy for colorectal cancer using colon 26 cells with oral fluoropyrimidines (5-FU, tegafur, UFT, S-1, 5'DFUR): Fourth report. In our first study, we reported that colon 26 cells can be a good experimental model of footpad transplantation-lung metastasis for investigating surgical adjuvant chemotherapy. In our second and third studies, 5-FU, HCFU, tegafur, UFT, S-1, 5&apo...

Edwards, A.; Larson, E.; Albright, J., 2015: Correlation of radiographic patellofemoral indices with tibial tubercle transfer distance in Fulkerson osteotomy procedures. A laterally tracking patella is commonly seen in patients with chronic recurrent lateral patellar dislocations. Clinical appearance of the J-sign occurs when the patella is congruent with the trochlear groove in flexion and moves over the lateral...

Guz, F.; Guz, J.; Astudillo, J.; Sanchez, H., 1984: Protecting the Hawaiian petrel. Noticias de Galapagos: 8 (40)

Watson, J.S.; Williams, R.M., 1955: The relationship between paunched and dead weights of rabbits. Regression lines were calculated and significant differences were found between the sexes, between samples killed by 3 different methods, and between animals killed at different times of day. These differences can be mainly accounted for by variat...

Lambert R.S.J.; McKerrow W.S., 1976: The Grampian Orogeny. Scottish Journal of Geology 12, Part 4: 271-292

Williams, J.; Ceccarelli, A.; Wallace, A., 2001: Genetic engineering, Second Edition. This 149-page book is part of a series on medical perspectives and reviews genetic engineering with clinical integration. The seven chapters include selected topics such as gene organization and expression, low-resolution mapping, structure determ...

Oddy, W.H.; Hickling, S.; Smith, M.A.; O'Sullivan, T.A.; Robinson, M.; de Klerk, N.H.; Beilin, L.J.; Mori, T.A.; Syrette, J.; Zubrick, S.R.; Silburn, S.R., 2011: Dietary intake of omega-3 fatty acids and risk of depressive symptoms in adolescents. Previous randomized controlled trials have demonstrated that omega-3 polyunsaturated fatty acids (n-3 PUFA) are beneficial in reducing symptoms of depression. However, there is limited evidence regarding the influence of dietary n-3 PUFA intake on...

Uhlig, K.; Balk, E.M.; Lau, J., 2008: Grading evidence-based guidelines--what are the issues?. American Journal of Kidney Diseases 52(2): 211-215

Moise, N.S.dney; Meyers Wallen, V.; Flahive, W.J.; Valentine, B.A.; Scarlett, J.M.; Brown, C.A.; Chavkin, M.J.; Dugger, D.A.; Renaud Farrell, S.; Kornreich, B., 1994: Inherited ventricular arrhythmias and sudden death in German shepherd dogs. Objectives. This report describes a unique group of German shepherd dogs with inherited ventricular arrhythmias and sudden death. Before death, these dogs have no evidence of cardiovascular failure. Background. There are few spontaneous animal mod...

Almy, T.P., 1981: Fiber and the gut. The role of fibre in nutrition and in the pathogenesis of some, mainly gastrointestinal, disorders is outlined.