The is an
archaeological site
An archaeological site is a place (or group of physical sites) in which evidence of past activity is preserved (either prehistoric or historic or contemporary), and which has been, or may be, investigated using the discipline of archaeology an ...
in the Natsushima neighborhood of the city of
Yokosuka
is a city in Kanagawa Prefecture, Japan.
, the city has a population of 409,478, and a population density of . The total area is . Yokosuka is the 11th most populous city in the Greater Tokyo Area, and the 12th in the Kantō region.
The city ...
,
Kanagawa Prefecture
is a prefecture of Japan located in the Kantō region of Honshu. Kanagawa Prefecture is the second-most populous prefecture of Japan at 9,221,129 (1 April 2022) and third-densest at . Its geographic area of makes it fifth-smallest. Kana ...
, in the southern
Kantō region
The is a geographical area of Honshu, the largest island of Japan. In a common definition, the region includes the Greater Tokyo Area and encompasses seven prefectures: Gunma, Tochigi, Ibaraki, Saitama, Tokyo, Chiba and Kanagawa. Slight ...
of
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
containing a
Jōmon period
The is the time in Japanese history, traditionally dated between 6,000–300 BCE, during which Japan was inhabited by a diverse hunter-gatherer and early agriculturalist population united through a common Jōmon culture, which reached a c ...
shell midden
A midden (also kitchen midden or shell heap) is an old dump for domestic waste which may consist of animal bone, human excrement, botanical material, mollusc shells, potsherds, lithics (especially debitage), and other artifacts and ecofact ...
. It was designated a National Historic Site of Japan in 1972.
It was then oldest known shell midden in Japan.
Overview
During the early to middle Jōmon period (approximately 4000 to 2500 BC), sea levels were five to six meters higher than at present, and the ambient temperature was also 2 deg C higher. During this period, the Kantō region was inhabited by the
Jōmon people
is the generic name of several peoples who lived in the Japanese archipelago during the Jōmon period (). The Jōmon people may have consisted of multiple groups, which arrived and merged at different times in the Japanese archipelago, using multi ...
, many of whom lived in coastal settlements. The
midden
A midden (also kitchen midden or shell heap) is an old dump for domestic waste which may consist of animal bone, human excrement, botanical material, mollusc shells, potsherds, lithics (especially debitage), and other artifacts and ecofact ...
s associated with such settlements contain
bone
A bone is a Stiffness, rigid Organ (biology), organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red blood cell, red and white blood cells, store minerals, provid ...
,
botanical
Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...
material,
mollusc shell
The mollusc (or molluskOften spelled mollusk shell in the USA; the spelling "mollusc" are preferred by ) shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which ...
s,
sherd
In archaeology, a sherd, or more precisely, potsherd, is commonly a historic or prehistoric fragment of pottery, although the term is occasionally used to refer to fragments of stone and glass vessels, as well.
Occasionally, a piece of broken p ...
s,
lithics
Lithic may refer to:
*Relating to stone tools
**Lithic analysis, the analysis of stone tools and other chipped stone artifacts
**Lithic core, the part of a stone which has had flakes removed from it
**Lithic flake, the portion of a rock removed to ...
, and other
artifacts and
ecofact
In archaeology, a biofact (more commonly known as an ecofact) is any organic material including flora or fauna material found at an archaeological site that has not been technologically altered by humans yet still has cultural relevance. Biofact ...
s associated with the now-vanished inhabitants, and these
features
Feature may refer to:
Computing
* Feature (CAD), could be a hole, pocket, or notch
* Feature (computer vision), could be an edge, corner or blob
* Feature (software design) is an intentional distinguishing characteristic of a software item ...
, provide a useful source into the
diet
Diet may refer to:
Food
* Diet (nutrition), the sum of the food consumed by an organism or group
* Dieting, the deliberate selection of food to control body weight or nutrient intake
** Diet food, foods that aid in creating a diet for weight loss ...
s and habits of Jōmon society. Most of these middens are found along the
Pacific coast
Pacific coast may be used to reference any coastline that borders the Pacific Ocean.
Geography Americas
Countries on the western side of the Americas have a Pacific coast as their western or southwestern border, except for Panama, where the Pac ...
of Japan.
The Natsushima site is located on what was once an island in
Tokyo Bay
is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. The Tokyo Bay region is both the most populous a ...
, but which is now surrounded by reclaimed land. The midden is located at the eastern end of the former island, at an elevation of 50 meters above the present sea level. It measures approximately 14 meters from east-to-west by 13 meters from north-to-south. During
archaeological excavation
In archaeology, excavation is the exposure, processing and recording of archaeological remains. An excavation site or "dig" is the area being studied. These locations range from one to several areas at a time during a project and can be condu ...
s by
Meiji University
, abbreviated as Meiji (明治) or Meidai (明大'')'', is a private research university located in Chiyoda City, the heart of Tokyo, Japan. Established in 1881 as Meiji Law School (明治法律学校, ''Meiji Hōritsu Gakkō'') by three Meiji-er ...
in 1950 and 1955 it was found to be clearly
stratified
Stratification may refer to:
Mathematics
* Stratification (mathematics), any consistent assignment of numbers to predicate symbols
* Data stratification in statistics
Earth sciences
* Stable and unstable stratification
* Stratification, or st ...
into three layers, with a deposit of soil in between each layer. Each of the strata had shards of
Jōmon pottery
The is a type of ancient earthenware pottery which was made during the Jōmon period in Japan. The term "Jōmon" () means "rope-patterned" in Japanese, describing the patterns that are pressed into the clay.
Outline
Oldest pottery in Jap ...
, which greatly assisted in dating the mound, and
radiocarbon dating
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method for determining the age of an object containing organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
The method was dev ...
of the lowest layer yielded a date of 9500 years ago, which created considerable academic interest. Other artifacts in the midden included stone weapons and
stone tool
A stone tool is, in the most general sense, any tool made either partially or entirely out of stone. Although stone tool-dependent societies and cultures still exist today, most stone tools are associated with prehistoric (particularly Stone Ag ...
s, bone weapons and tools, fishing hooks made from shell, and shell ring jewelry. These artifacts are stored and exhibited at the Meiji University Museum. The site is a 10-minute walk from the "Matsushima" bus stop on the Keikyu bus from
Oppama Station
is a passenger railway station located in the city of Yokosuka, Kanagawa Prefecture, Japan, operated by the private railway company Keikyū.
Lines
Oppama Station is served by the Keikyū Main Line and is located 42.8 kilometers from the northern ...
on the
Keikyū Main Line
The is a railway line in Japan, operated by the private railway operator Keikyu. The line connects the Tokyo wards of Minato, Shinagawa, Ōta, and the Kanagawa municipalities of Kawasaki, Yokohama and Yokosuka. The Keikyu Main Line began a ...
.
See also
*
List of Historic Sites of Japan (Kanagawa)
This list is of the Monuments of Japan, Historic Sites of Japan located within the Prefectures of Japan, Prefecture of Kanagawa.
National Historic Sites
As of 1 August 2019, sixty-three Sites have been Cultural Properties of Japan, designated as ...
References
External links
City home page{{in lang, ja
Yokosuka, Kanagawa
History of Kanagawa Prefecture
Historic Sites of Japan
Jōmon-period shell middens