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59-590: Tosashimizu is located in far western Kochi Prefecture on the island of Shikoku . Parts of the city are within the borders of the Ashizuri-Uwakai National Park . Kōchi Prefecture Tosashimizu has a humid subtropical climate ( Köppen climate classification Cfa ) with hot, humid summers and cool winters. There is significant precipitation throughout the year, especially during June and July. The average annual temperature in Tosashimizu

118-480: A thin section using a method like the Gazzi-Dickinson Method . This yields the relative percentages of quartz, feldspar, and lithic grains and the amount of clay matrix. The composition of a sandstone can provide important information on the genesis of the sediments when used with a triangular Q uartz, F eldspar, L ithic fragment ( QFL diagrams ). However, geologist have not been able to agree on

177-464: A branch in Tosashimizu, and Osaka Aquarium Biological Research Institute of Iburi Center (OBIC) provides one third of those marine animals displayed at the aquarium in Osaka. The center conducts scientific studies at its facility including a 1,600 ton tank. Tosashimizu has six public elementary schools and one public middle school operated by the city government, and one public high school operated by

236-478: A sandstone goes through as the degree of kinetic processing of the sediments increases. Dott's (1964) sandstone classification scheme is one of many such schemes used by geologists for classifying sandstones. Dott's scheme is a modification of Gilbert's classification of silicate sandstones, and it incorporates R.L. Folk's dual textural and compositional maturity concepts into one classification system. The philosophy behind combining Gilbert's and R. L. Folk's schemes

295-462: A set of boundaries separating regions of the QFL triangle. Visual aids are diagrams that allow geologists to interpret different characteristics of a sandstone. For example, a QFL chart can be marked with a provenance model that shows the likely tectonic origin of sandstones with various compositions of framework grains. Likewise, the stage of textural maturity chart illustrates the different stages that

354-514: A southern part facing the Pacific Ocean. The Hydrangea hirta species can be found in these mountain ranges. Most of the 3.8 million inhabitants live in the north, and all but one of the island's few larger cities are located there. Mount Ishizuchi ( 石鎚山 ) in Ehime at 1,982 m (6,503 ft) is the highest mountain on the island. Industry is moderately well developed and includes

413-445: A twofold classification: Cement is what binds the siliciclastic framework grains together. Cement is a secondary mineral that forms after deposition and during burial of the sandstone. These cementing materials may be either silicate minerals or non-silicate minerals, such as calcite. Sandstone that becomes depleted of its cement binder through weathering gradually becomes friable and unstable. This process can be somewhat reversed by

472-439: A type of deep-fried tofu pockets seasoned with sugar, mirin, and soy sauce. A thin slice of kamaboko , a halfmoon-shaped fish cake, is often added. Shichimi can be added to taste. Another specialty is Kōchi 's signature dish, seared bonito . The warm climate of Shikoku lends itself to the cultivation of citrus fruits. As a result, yuzu , mikan and other citrus fruits are plentiful on Shikoku and have become synonymous with

531-433: Is Matsuyama (population: 507,137) and is the capital of Ehime Prefecture . Shikoku is the main island with the third largest population density, at 193 inhabitants per square kilometre (500/sq mi). Per Japanese census data, and, Shikoku region's peak population was at 1950 and has had negative population growth from 1950 to 1970 and 1990 onward. Shikoku has historically been quite isolated and therefore it has kept

590-526: Is 18.4 °C (65.1 °F). The average annual rainfall is 2,563.9 mm (100.94 in) with June as the wettest month. The temperatures are highest on average in August, at around 27.7 °C (81.9 °F), and lowest in January, at around 8.9 °C (48.0 °F). The highest temperature ever recorded in Tosashimizu was 35.5 °C (95.9 °F) on 30 July 1942; the coldest temperature ever recorded

649-508: Is Shinnenan ( 真念庵 ) , a small wayside hermitage 28 km from Kongōfuku-ji. It was designated to provide a free lodging for pilgrims on that section, where people could also leave their luggage while visiting Kongōfuku-ji, come back to Shinnenan and continue on to the 39th Enkō-ji in Sukumo 50.8 km away. Mejikano sato Tosashimizu roadside station is near scenic Tatsukushi along route 321. Mejika means sōdagatsuo (frigate mackerel) in

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708-502: Is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains, cemented together by another mineral. Sandstones comprise about 20–25% of all sedimentary rocks . Most sandstone is composed of quartz or feldspar , because they are the most resistant minerals to the weathering processes at the Earth's surface. Like uncemented sand , sandstone may be imparted any color by impurities within

767-837: Is a distinction that can be recognized in the field . In turn, the distinction between an orthoquartzite and a metaquartzite is the onset of recrystallization of existing grains. The dividing line may be placed at the point where strained quartz grains begin to be replaced by new, unstrained, small quartz grains, producing a mortar texture that can be identified in thin sections under a polarizing microscope. With increasing grade of metamorphism, further recrystallization produces foam texture , characterized by polygonal grains meeting at triple junctions, and then porphyroblastic texture , characterized by coarse, irregular grains, including some larger grains ( porphyroblasts .) Sandstone has been used since prehistoric times for construction, decorative art works and tools. It has been widely employed around

826-530: Is also famous for its 88-temple pilgrimage of temples. The pilgrimage was established by the Heian-period Buddhist priest Kūkai , a native of present-day Zentsūji-cho in Kagawa prefecture. According to legend, Kūkai still appears to pilgrims today. Most modern-day pilgrims travel by bus, rarely choosing the old-fashioned method of going by foot. They are seen wearing white jackets emblazoned with

885-472: Is also offered on the east side of the peninsula, based at Kubotsu town to the middle and Shimonokae to the north. The Shikoku Pilgrimage passes through the city, and the longest stretch of 80.7 km on the route is between the 37th temple ( Iwamoto-ji ( 岩本寺 ) ) in Shimanto and the 38th temple ( Kongōfuku-ji ( 金剛福寺 ) ) on Cape Ashizuri. Descending from Itsuta pass ( 伊豆田峠 ) toward Tosashimizu, there

944-523: Is likely formed during eogenesis. Deeper burial is accompanied by mesogenesis , during which most of the compaction and lithification takes place. Compaction takes place as the sand comes under increasing pressure from overlying sediments. Sediment grains move into more compact arrangements, ductile grains (such as mica grains) are deformed, and pore space is reduced. In addition to this physical compaction, chemical compaction may take place via pressure solution . Points of contact between grains are under

1003-431: Is redeposited in the unstrained pore spaces. Mechanical compaction takes place primarily at depths less than 1,000 meters (3,300 ft). Chemical compaction continues to depths of 2,000 meters (6,600 ft), and most cementation takes place at depths of 2,000–5,000 meters (6,600–16,400 ft). Unroofing of buried sandstone is accompanied by telogenesis , the third and final stage of diagenesis. As erosion reduces

1062-443: Is that it is better able to "portray the continuous nature of textural variation from mudstone to arenite and from stable to unstable grain composition". Dott's classification scheme is based on the mineralogy of framework grains, and on the type of matrix present in between the framework grains. In this specific classification scheme, Dott has set the boundary between arenite and wackes at 15% matrix. In addition, Dott also breaks up

1121-454: Is the largest of Japan's islands to completely lack them. But Shikoku did experience volcanic activity in the distant prehistoric past; a major volcanic caldera in the area of Mount Ishizuchi was active during the Miocene around 14 million years ago and the small volcanic cone of Mount Iino at an unknown date. Shikoku has a total population of 3,630,320 in 2022. The largest city

1180-575: Is the only city on Shikoku island that hosts a Japan Air Self-Defense Force (ASDF) base. The largest industry is fishing, especially deep-sea fishing . Sōdabushi , locally called mejikabushi , is one of the main seafood produce in the area with a market share of approximately 70%. It uses sōdagatsuo (frigate mackerel) and is manufactured using a similar process to katsuobushi . The local fishermen's union registered their catch of blue mackerel Scomber australasicus as "Tosano shimizusaba", or blue mackerel of Shimizu, Tosa. Osaka Aquarium Kaiyukan has

1239-469: Is the smallest of the four main islands of Japan . It is 225 km or 139.8 mi long and between 50 and 150 km or 31.1 and 93.2 mi at its widest. It has a population of 3.8 million, the least populated of Japan's four main islands. It is south of Honshu and northeast of Kyushu . Shikoku's ancient names include Iyo-no-futana-shima ( 伊予之二名島 ) , Iyo-shima ( 伊予島 ) , and Futana-shima ( 二名島 ) , and its current name refers to

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1298-614: The Kansai area which has a large population, including the large conurbations of Osaka , Kyoto , and Kobe . Therefore, the Kobe-Awaji-Naruto Expressway carries a large traffic volume. Many highway buses are operated between Kansai and Tokushima Prefecture . The central part of Shikoku is connected to Honshu by ferry, air, and – since 1988 – by the Great Seto Bridge network. Until completion of

1357-498: The percolation of water and other fluids and are porous enough to store large quantities, making them valuable aquifers and petroleum reservoirs . Quartz-bearing sandstone can be changed into quartzite through metamorphism , usually related to tectonic compression within orogenic belts . Sandstones are clastic in origin (as opposed to either organic , like chalk and coal , or chemical , like gypsum and jasper ). The silicate sand grains from which they form are

1416-678: The Kōchi Prefectural Board of Education. Tosashimizu has no passenger railway services. The nearest train station is Nakamura Station , the terminus of the Tosa Kuroshio Railway Nakamura Line , located in Shimanto city . A bus service connects Tosashimizu with Nakamura Station, taking approximately 60 minutes. The 70 km coastline stretching from the northeast to southwest boundaries of Tosashimizu attracts over 800,000 tourists to Tosashimizu each year. Ashizuri-Uwakai National Park includes Ashizuri,

1475-784: The Oboke Koboke sections of the river. Shikoku has four important capes: Gamōda in Anan, Tokushima on the easternmost point on the island, Sada in Ikata, Ehime on the westernmost point. Muroto in Muroto, Kōchi and Ashizuri, the southern extreme of Shikoku, in Tosashimizu, Kōchi , jut into the Pacific Ocean. The island's northernmost point is in Takamatsu . Unlike the other three major islands of Japan, Shikoku has no active volcanoes, and

1534-491: The application of tetraethyl orthosilicate (Si(OC 2 H 5 ) 4 ) which will deposit amorphous silicon dioxide between the sand grains. The reaction is as follows. Pore space includes the open spaces within a rock or a soil. The pore space in a rock has a direct relationship to the porosity and permeability of the rock. The porosity and permeability are directly influenced by the way the sand grains are packed together. Sandstones are typically classified by point-counting

1593-576: The area was part of the holdings of Tosa Domain ruled by the Yamauchi clan from their seat at Kōchi Castle . Following the Meiji restoration , the village of Shimatsu (清松村) within Hata District, Kōchi was established with the creation of the modern municipalities system on April 1, 1889. It changed its name to Shimizu and was elevated to town status in 1924. On August 1, 1954, Shimizu merged with

1652-409: The bridges, the region was isolated from the rest of Japan. The freer movement between Honshu and Shikoku was expected to promote economic development on both sides of the bridges, which has not materialized yet. Within the island, a web of national highways connects the major population centers. These include Routes 11 , 32 , 33 , 55 , and 56 . The Shikoku Railway Company (JR Shikoku) serves

1711-569: The characters reading dōgyō ninin ( 同行二人 ) meaning "two traveling together". Tokushima Prefecture also has its annual Awa Odori running in August at the time of the Obon festival, which attracts thousands of tourists each year from all over Japan and from abroad. Kōchi Prefecture is home to the first annual Yosakoi festival. The largest festival in Kōchi, it takes place in August every year and attracts dancers and tourists from all over Japan. One of

1770-473: The common minerals most resistant to weathering processes at the Earth's surface, as seen in the Goldich dissolution series . Framework grains can be classified into several different categories based on their mineral composition: Matrix is very fine material, which is present within interstitial pore space between the framework grains. The nature of the matrix within the interstitial pore space results in

1829-456: The depositional environment, older sand is buried by younger sediments, and it undergoes diagenesis . This mostly consists of compaction and lithification of the sand. Early stages of diagenesis, described as eogenesis , take place at shallow depths (a few tens of meters) and are characterized by bioturbation and mineralogical changes in the sands, with only slight compaction. The red hematite that gives red bed sandstones their color

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1888-407: The depth of burial, renewed exposure to meteoric water produces additional changes to the sandstone, such as dissolution of some of the cement to produce secondary porosity . Framework grains are sand-sized (0.0625-to-2-millimeter (0.00246 to 0.07874 in) diameter) detrital fragments that make up the bulk of a sandstone. Most framework grains are composed of quartz or feldspar , which are

1947-540: The diet in Kagawa Prefecture (formerly Sanuki Province) in the Edo period . The larger southern area of Shikoku is mountainous and sparsely populated. The only significant lowland is a small alluvial plain at Kōchi , the prefectural capital. The area's mild winters stimulated some truck farming , specializing in growing out-of-season vegetables under plastic covering. Two crops of rice can be cultivated annually in

2006-446: The different types of framework grains that can be present in a sandstone into three major categories: quartz, feldspar, and lithic grains. When sandstone is subjected to the great heat and pressure associated with regional metamorphism , the individual quartz grains recrystallize, along with the former cementing material, to form the metamorphic rock called quartzite . Most or all of the original texture and sedimentary structures of

2065-494: The four former provinces that make up the island: Awa , Tosa , Sanuki , and Iyo . Shikoku Island, comprising Shikoku and its surrounding islands, covers about 18,800 square kilometres (7,259 sq mi) and consists of four prefectures : Ehime , Kagawa , Kōchi , and Tokushima . Across the Seto Inland Sea lie Wakayama , Osaka , Hyōgo , Okayama , Hiroshima , and Yamaguchi Prefectures on Honshu . To

2124-433: The greatest strain, and the strained mineral is more soluble than the rest of the grain. As a result, the contact points are dissolved away, allowing the grains to come into closer contact. Lithification follows closely on compaction, as increased temperatures at depth hasten deposition of cement that binds the grains together. Pressure solution contributes to cementing, as the mineral dissolved from strained contact points

2183-442: The hardness of individual grains, uniformity of grain size and friability of their structure, some types of sandstone are excellent materials from which to make grindstones , for sharpening blades and other implements. Non-friable sandstone can be used to make grindstones for grinding grain, e.g., gritstone . A type of pure quartz sandstone, orthoquartzite, with more of 90–95 percent of quartz, has been proposed for nomination to

2242-881: The island and connects to Honshu via the Great Seto Bridge . JR lines include: Private railway lines operate in each of the four prefectures on Shikoku. Shikoku lacks a full international airport but has four regional/domestic airports ( Tokushima Airport , Takamatsu Airport , Kōchi Ryōma Airport and Matsuyama Airport ). All of these airports have flights to Tokyo and other major Japanese cities such as Osaka , Nagoya , Sapporo , and Fukuoka . International flights to Seoul , South Korea are serviced by Asiana Airlines from Matsuyama and Takamatsu . There are periodic international charter flights as well. Sea Travel Ferries link Shikoku to destinations including Honshu, Kyushu , and islands around Shikoku. 33°45′N 133°30′E  /  33.750°N 133.500°E  / 33.750; 133.500 Sandstone Sandstone

2301-475: The largest peninsula in the area. Tosashimizu is the nearest city to Ashizuri peninsula which is protruding into the Pacific Ocean. Cape Ashizuri is 80 meters above sea level at the southeastern end on the peninsula. The peninsula is covered by subtropical plants including camellia, holm oak, and colony of Livistona Livistona chinensis , and the sea is a prime fishing ground for katsuo fish, or skipjack tuna Katsuwonus pelamis . While there are small islands to

2360-446: The local dialect, and they manufacture and sell sōdabushi , the main sea food produce of the city, processed for demonstration at the factory at the back of the store for direct selling. Farm produce is also sold at this roadside station. [REDACTED] Cape Ashizuri travel guide from Wikivoyage Shikoku Shikoku ( 四国 , Shikoku , lit.   ' four provinces ' ) , Japanese pronunciation: [ɕikokɯ]

2419-403: The major foods of Shikoku is udon . Udon is often served hot as a noodle soup in its simplest form, as kake udon , in a mildly flavoured broth called kakejiru , which is made of dashi , soy sauce ( shōyu ), and mirin . It is usually topped with thinly chopped scallions. Other common toppings include tempura , often prawn or kakiage (a type of mixed tempura fritter ), or aburaage ,

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2478-733: The major teams competing in Shikoku's major cities include: Two time darts Women's World Champion Mikuru Suzuki is a native of Takamatsu in Kagawa Prefecture on Shikoku. Shikoku is connected to Honshu by three expressways , which together form the Honshū–Shikoku Bridge Project . The eastern gateway to Shikoku, Naruto in Tokushima Prefecture has been linked to the Kobe-Awaji-Naruto Expressway since 1998. This line connects Shikoku to

2537-491: The minerals, but the most common colors are tan, brown, yellow, red, grey, pink, white, and black. Because sandstone beds can form highly visible cliffs and other topographic features, certain colors of sandstone have become strongly identified with certain regions, such as the red rock deserts of Arches National Park and other areas of the American Southwest . Rock formations composed of sandstone usually allow

2596-493: The much lower temperatures and pressures associated with diagenesis of sedimentary rock, but diagenesis has cemented the rock so thoroughly that microscopic examination is necessary to distinguish it from metamorphic quartzite. The term orthoquartzite is used to distinguish such sedimentary rock from metaquartzite produced by metamorphism. By extension, the term orthoquartzite has occasionally been more generally applied to any quartz-cemented quartz arenite . Orthoquartzite (in

2655-464: The narrow sense) is often 99% SiO 2 with only very minor amounts of iron oxide and trace resistant minerals such as zircon , rutile and magnetite . Although few fossils are normally present, the original texture and sedimentary structures are preserved. The typical distinction between a true orthoquartzite and an ordinary quartz sandstone is that an orthoquartzite is so highly cemented that it will fracture across grains, not around them. This

2714-543: The neighboring towns of Shimokawaguchi, Misaki and Shimokae to form the city of Tosashimizu. Tosashimizu has a mayor-council form of government with a directly elected mayor and a unicameral city council of 12 members. Tosashimizu contributes one member to the Kōchi Prefectural Assembly. In terms of national politics, the city is part of Kōchi 2nd district of the lower house of the Diet of Japan . Tosashimizu

2773-418: The original characteristics of Japan for a longer period, especially in regards to vegetation and some architectural techniques. There are many Buddhist temples. The "lost" Shikoku has been described by an American writer, Alex Kerr , who lived in a remote mountain village near Oboke (大歩危) for many years from 1970 onwards. Ashizuri-Uwakai National Park is located in the south-west part of Shikoku. Shikoku

2832-444: The processing of ores from the important Besshi copper mine . Land is used intensively. Wide alluvial areas, especially in the eastern part of the zone, are planted with rice and subsequently are double-cropped with winter wheat and barley. Fruit is grown throughout the northern area in great variety, including citrus fruits, persimmons, peaches, and grapes. Because of wheat production, Sanuki udon ( 讃岐うどん ) became an important part of

2891-638: The product of physical and chemical weathering of bedrock. Weathering and erosion are most rapid in areas of high relief, such as volcanic arcs , areas of continental rifting , and orogenic belts . Eroded sand is transported by rivers or by the wind from its source areas to depositional environments where tectonics has created accommodation space for sediments to accumulate. Forearc basins tend to accumulate sand rich in lithic grains and plagioclase . Intracontinental basins and grabens along continental margins are also common environments for deposition of sand. As sediments continue to accumulate in

2950-433: The regions they are grown in. Pioneering natural farmer Masanobu Fukuoka , author of The One-Straw Revolution , developed his methods here on his family's farm. Historically no Shikoku-based sports team has competed in the top Japanese division of baseball , football (soccer) or even rugby union . However, Tokushima Vortis have had two spells in the top flight of Japanese soccer ( J1 ) in 2014 and 2021. Currently

3009-417: The sandstone are erased by the metamorphism. The grains are so tightly interlocked that when the rock is broken, it fractures through the grains to form an irregular or conchoidal fracture. Geologists had recognized by 1941 that some rocks show the macroscopic characteristics of quartzite, even though they have not undergone metamorphism at high pressure and temperature. These rocks have been subject only to

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3068-456: The south of it, the cape is recognized as the southernmost location on Shikoku island at 32°43′24″N 133°1′12″W  /  32.72333°N 133.02000°W  / 32.72333; -133.02000 . Tatsukushi geologic strata with layers of sandstone and mudstone form joints and layers. A gate-like rock on the coast, Hakusandōmon is on the west side of the cape. Tōjindaba Site is a prehistoric megalithic site with stone circle, located on

3127-531: The southern area. The pulp and paper industry took advantage of the abundant forests and hydroelectric power. The major river in Shikoku is the Yoshino River . It runs 196 km (121.8 mi) from its source close to Mount Ishizuchi , flowing basically west to east across the northern boundaries of Kōchi and Tokushima Prefectures, reaching the sea at the city of Tokushima. The Yoshino is famous for Japan's best white-water rafting, with trips going along

3186-475: The town of Iburi on the foot of Ashizuri peninsula. Whale sharks migrate off the Ashizuri Peninsula between June and September, and some are kept captive in a cage 300 m offshore. Between April and the end of July each year, ocean sunfish are kept in a net cage 10 m by 10 m and 5 m deep. When the water temperature rises, they release the fish into the wild. Whale watching

3245-526: The west hill on Cape Ashizuri. On the western shore of Ashizuri peninsula, lies the village of Nakanohama within Tosashimizu, where Nakahama Manjirō was born and became one of the first Japanese to travel to the United States. Manjirō, a young fisherman, was shipwrecked off the coast of Japan in 1841 and rescued by whaling captain William H. Whitfield of Fairhaven, Massachusetts . Whitfield brought

3304-408: The west lie Ōita and Miyazaki Prefectures on Kyushu . Shikoku is ranked as the 50th largest island by area in the world. Additionally, it is ranked as the 23rd most populated island in the world, with a population density of 193 inhabitants per square kilometre (500/sq mi). Mountains running east and west divide Shikoku into a narrow northern subregion, fronting on the Seto Inland Sea , and

3363-626: The world in constructing temples, churches, homes and other buildings, and in civil engineering . Although its resistance to weathering varies, sandstone is easy to work. That makes it a common building and paving material, including in asphalt concrete . However, some types that have been used in the past, such as the Collyhurst sandstone used in North West England , have had poor long-term weather resistance, necessitating repair and replacement in older buildings. Because of

3422-512: The young Manjirō back to Fairhaven and New Bedford at the end of the whaling voyage, and Manjirō spent several years there before eventually making his way back to Japan. Because of this history, Tosashimizu became the sister city of both Fairhaven and New Bedford in 1987. He became popular as John Manjirō after Ibuse Masuji depicted him in his novel John Manjiro. The Castaway: His Life and His Adventures . There are several wildlife tours popular on Ashizuri peninsula; wildlife swims are organized in

3481-482: Was −5.0 °C (23.0 °F) on 26 February 1981. Per Japanese census data, the population of Tosashimizu in 2020 is 12,388 people. Tosashimizu has been conducting censuses since 1920. Of the 11 cities in Kochi Prefecture, Tosashimizu has the second-lowest population as of March 31, 2015. As with all of Kōchi Prefecture, the area of Tosashimizu was part of ancient Tosa Province . During the Edo period ,

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