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Geology Of Japan
The islands of Japan are primarily the result of several large ocean movements occurring over hundreds of millions of years from the mid-Silurian to the Pleistocene, as a result of the subduction of the Philippine Sea Plate beneath the continental Amurian Plate and Okinawa Plate to the south, and subduction of the Pacific Plate under the Okhotsk Plate to the north. Japan was originally attached to the eastern coast of the Eurasian continent. The subducting Philippine and Pacific plates descended beneath the Asian plate into the eastward flow of the asthenosphere. This change in pressure from the asthenosphere pushing back on the subjected plates pulled Japan eastward off of Asia in the process of Back-arc basin, back-arc extension. This opened up the Sea of Japan around 15 million years ago. The Strait of Tartary and the Korea Strait opened much later. Japan is situated in a Volcano, volcanic zone on the Pacific Ring of Fire. Frequent low intensity earth tremors and occasional v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Strait
The Korea Strait is a strait, sea passage in East Asia between the Korean Peninsula and Japan. It connects the East China Sea, the Yellow Sea and the Sea of Japan in the northwest Pacific Ocean. The strait is split by Tsushima Island into two parts: the Western Channel, and the Tsushima Strait or Eastern Channel. It is economically important, as many shipping lanes pass through the strait, and both Japan and South Korea allow free passage through it. In ancient times, both Buddhism and Mongol invaders passed over the strait to reach Japan. More recently, it was the site of the 1950 Battle of Korea Strait during the Korean War. A tunnel running underneath the strait connecting Japan and Korea, the Japan–Korea Undersea Tunnel, has been proposed to connect the two countries. Geography To the north, the Korea Strait is bounded by the southern coast of the Korean Peninsula. And to the south, it by the southwestern Japanese islands of Kyūshū and Honshū. It is about wide and avera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Panthalassa
Panthalassa, also known as the Panthalassic Ocean or Panthalassan Ocean (from Greek "all" and "sea"), was the vast superocean that encompassed planet Earth and surrounded the supercontinent Pangaea, the latest in a series of supercontinents in the history of Earth. During the Paleozoic–Mesozoic transition ( 250 ), the ocean occupied almost 70% of Earth's surface, with the supercontinent Pangaea taking up the remaining one third. The original, ancient ocean floor has now completely disappeared because of the continuous subduction along the continental margins on its circumference. Panthalassa is also referred to as the Paleo-Pacific ("old Pacific") or Proto-Pacific because the Pacific Ocean is a direct continuation of Panthalassa. Formation The supercontinent Rodinia began to break up 870–845 probably as a consequence of a superplume caused by mantle slab avalanches along the margins of the supercontinent. In a second episode 750 the western half of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodinia
Rodinia (from the Russian родина, ''rodina'', meaning "motherland, birthplace") was a Mesoproterozoic and Neoproterozoic supercontinent that assembled 1.26–0.90 billion years ago (Ga) and broke up 750–633 million years ago (Ma). were probably the first to recognise a Precambrian supercontinent, which they named "Pangaea I." It was renamed "Rodinia" by , who also were the first to produce a plate reconstruction and propose a temporal framework for the supercontinent. Rodinia formed at c. 1.23 Ga by accretion and collision of fragments produced by breakup of an older supercontinent, Columbia, assembled by global-scale 2.0–1.8 Ga collisional events.; Rodinia broke up in the Neoproterozoic, with its continental fragments reassembled to form Pannotia 633–573 Ma. In contrast with Pannotia, little is known about Rodinia's configuration and geodynamic history. Paleomagnetic evidence provides some clues to the paleolatitude of individual pieces of the Earth's crus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan Relief Map Of Land And Seabed
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands—Hokkaido, Honshu, Shikoku, and Kyushu—and thousands of smaller islands, covering . Japan has a population of over 123 million as of 2025, making it the eleventh-most populous country. The capital of Japan and its largest city is Tokyo; the Greater Tokyo Area is the largest metropolitan area in the world, with more than 37 million inhabitants as of 2024. Japan is divided into 47 administrative prefectures and eight traditional regions. About three-quarters of the country's terrain is mountainous and heavily forested, concentrating its agriculture and highly urbanized population along its eastern coastal plains. The country sits on the Pacific Ring of Fire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geological Map Japan Basement
Geology (). is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time. Modern geology significantly overlaps all other Earth sciences, including hydrology. It is integrated with Earth system science and planetary science. Geology describes the structure of the Earth on and beneath its surface and the processes that have shaped that structure. Geologists study the mineralogical composition of rocks in order to get insight into their history of formation. Geology determines the relative ages of rocks found at a given location; geochemistry (a branch of geology) determines their absolute ages. By combining various petrological, crystallographic, and paleontological tools, geologists are able to chronicle the geological history of the Earth as a whole. One aspect is to demonstrate the age of the Earth. Geology provides evidence for plate tectonics, the evolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Hanshin Earthquake
The Great Hanshin Earthquake (, ) occurred on January 17, 1995, at 05:46:53 JST in the southern part of Hyōgo Prefecture, Japan, including the region of Hanshin. It measured 6.9 on the moment magnitude scale and had a maximum intensity of 7 on the JMA Seismic Intensity Scale (XI–XII on the Modified Mercalli intensity scale). The tremors lasted for approximately 20 seconds. The focus of the earthquake was located 17 km beneath its epicenter, on the northern end of Awaji Island, 20 km away from the center of the city of Kobe. At least 5,000 people died, about 4,600 of them from Kobe. Kobe, with its population of 1.5 million, was the closest major city to the epicenter and hit by the strongest tremors. It was Japan's second deadliest earthquake in the 20th century after the 1923 Great Kantō earthquake, in which more than 105,000 people died. Earthquake Most of the largest earthquakes in Japan are caused by subduction of the Philippine Sea plate or Pac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2004 Chūetsu Earthquake
The occurred in Niigata Prefecture, Japan, at 17:56 local time (08:56 UTC) on Saturday, October 23, 2004. The Japan Meteorological Agency (JMA) named it the .震度データベース検索（地震別検索結果） Japan Meteorological Agency（Japanese） Retrieval 2018/04/03 Niigata Prefecture is located in the of , the largest island of Japan. The initial earthquake had a magnitude of 6.6 and caused noticeable shaking across almost half of Honshu, including parts of the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2011 Tōhoku Earthquake And Tsunami
On 11 March 2011, at 14:46:24 Japan Standard Time, JST (05:46:24 UTC), a 9.0–9.1 Submarine earthquake, undersea megathrust earthquake occurred in the Pacific Ocean, east of the Oshika Peninsula of the Tōhoku region. It lasted approximately six minutes and caused a tsunami. It is sometimes known in Japan as the , among other names. The disaster is often referred to by its numerical date, 3.11 (read in Japanese). It was the List of earthquakes in Japan, most powerful earthquake ever recorded in Japan, and the Largest earthquakes by magnitude#Strongest earthquakes by magnitude, fourth most powerful earthquake recorded in the world since modern seismography began in 1900. The earthquake triggered powerful tsunami waves that may have reached heights of up to in Miyako, Iwate, Miyako in Tōhoku's Iwate Prefecture,Yomiuri Shimbun evening edition 2-11-04-15 page 15, nearby Aneyoshi fishery port (姉吉漁港)(Google map E39 31 57.8, N 142 3 7.6) 2011-04-15大震災の津 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2024 Noto Earthquake
On 1 January 2024, at 16:10 Japan Standard Time, JST (07:10 Coordinated Universal Time, UTC), a 7.6 (7.5) earthquake struck north-northeast of Suzu, Ishikawa, Suzu, located on the Noto Peninsula of Ishikawa Prefecture, Japan. The Fault (geology)#Dip-slip faults, reverse-faulting shock achieved a maximum Japan Meteorological Agency seismic intensity scale, JMA seismic intensity of ''Shindo 7'' and Modified Mercalli intensity scale, Modified Mercalli intensity of X–XI (''Extreme''). The shaking and accompanying tsunami caused widespread destruction on the Noto Peninsula, particularly in the towns of Suzu, Ishikawa, Suzu, Wajima, Ishikawa, Wajima, Noto, Ishikawa, Noto and Anamizu. Damage was also recorded in Toyama Prefecture, Toyama and Niigata Prefecture, Niigata prefectures. There were 607 deaths confirmed and two people remain missing. Over 580 fatalities occurred in Ishikawa, six in Niigata and five more in Toyama. The mainshock also injured over 1,300 people and damaged 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsunami
A tsunami ( ; from , ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are in turn generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water from a large event. Tsunami waves do not resemble normal undersea currents or sea waves because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide. For this reason, it is often referred to as a tidal wave, although this usage is not favoured by the scientific community because it might give the false impression of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
