|
Tham Lod Rockshelter
Tham Lod Rockshelter ( th, เพิงผาถ้ำลอด), first researched by Rasmi Shoocongdej from Silpakorn University, funded by the Thai Research Fund, was a prehistoric cemetery and a workshop located in Northern Thailand known to have human inhabitants from the late Pleistocene to the late Holocene periodShoocongdej, R. (2006). Late Pleistocene Activities at the Tham Lod Rockshelter in Highland Pang Mapha, Mae Hong Son Province, Northwestern Thailand. ''Uncovering Southeast Asia's past: Selected Papers from the 10th International Conference of the European Association of Southeast Asian Archaeologists''. Singapore: NUS Press, pages 22-24. Additionally, Tham Lod is near Ban Rai, another rock shelter and is in the vicinity of two well known caves, Spirit Cave and Tham Lot cave. Recent researches and carbon dating suggested that Homo sapiens have occupied the area.Pureepatpong N. (2006) Recent Investigation of Early People (Late Pleistocene to Early Holocene) from Ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirit Cave (Thailand)
Spirit Cave ( th, ถ้ำผีแมน, ''Tham Phii Man'') is an archaeological site in Pang Mapha district, Mae Hong Son Province, northwestern Thailand. It was occupied 12,000 to 7,000 uncalibrated radiocarbon years ago by prehistoric humans of the Hoabinhian culture. Location The site is situated at an elevation of above sea level on a hillside overlooking a small stream. It was excavated in the mid-1960s by Chester Gorman. The Salween River, one of Southeast Asia's longest rivers, flows less than to the north. Two other significant nearby sites are the Banyan Valley Cave and the Steep Cliff Cave. Chronology Human presence at the site is documented from the Upper Paleolithic to the early Neolithic, but the primary occupation layers represent Hoabinhian hunter-gatherers. Radiocarbon dating of organic resin on some pottery sherds returned Late Neolithic-Bronze ages, at odds with Gorman's claims for the Palaeolithic age of the deposit. Radiocarbon dating of four fres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quartzite
Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone.Essentials of Geology, 3rd Edition, Stephen Marshak, p 182 Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and red due to varying amounts of hematite. Other colors, such as yellow, green, blue and orange, are due to other minerals. The term ''quartzite'' is also sometimes used for very hard but unmetamorphosed sandstones that are composed of quartz grains thoroughly cemented with additional quartz. Such sedimentary rock has come to be described as orthoquartzite to distinguish it from metamorphic quartzite, which is sometimes called metaquartzite to emphasize its metamorphic origins. Quartzite is very resistant to chemical weathering and often forms ridges and resistant hilltops. The nearly pure silica conte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Thailand
Prehistoric Thailand may be traced back as far as 1,000,000 years ago from the fossils and stone tools found in northern and western Thailand. At an archaeological site in Lampang, northern Thailand ''Homo erectus'' fossils, Lampang Man, dating back 1,000,000 – 500,000 years, have been discovered. Stone tools have been widely found in Kanchanaburi, Ubon Ratchathani, Nakhon Si Thammarat, and Lopburi. Prehistoric cave paintings have also been found in these regions, dating back 10,000 years. 2,500,000 - 10,000 years ago: Palaeolithic Early Stone Age The Lower Palaeolithic is the earliest subdivision of the Palaeolithic or Old Stone Age. It spans the time from around 2.5 million years ago, when the first craft and use of stone tools by hominids appears in the archaeological record, until around 120,000 years ago when important evolutionary and technological changes ushered in the Middle Palaeolithic. Early species The earliest hominids, known as Homo erectus and recognisable as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Thailand
The Tai ethnic group migrated into mainland Southeast Asia over a period of centuries. The word ''Siam'' ( th, สยาม ) may have originated from Pali (''suvaṇṇabhūmi'', "land of gold") or Sanskrit श्याम (''śyāma'', "dark") or Mon ရာမည (''rhmañña'', "stranger"), probably the same root as Shan and Ahom. ''Xianluo'' () was the Chinese name for Ayutthaya Kingdom, merged from Suphannaphum city state centered in modern-day Suphan Buri and Lavo city state centered in modern-day Lop Buri. To the Thai, the name has mostly been ''Mueang Thai''. The country's designation as Siam by Westerners likely came from the Portuguese. Portuguese chronicles noted that the Borommatrailokkanat, king of the Ayutthaya Kingdom, sent an expedition to the Malacca Sultanate at the southern tip of the Malay Peninsula in 1455. Following their conquest of Malacca in 1511, the Portuguese sent a diplomatic mission to Ayutthaya. A century later, on 15 August 1612, ''The Glob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirit Cave, Thailand
Spirit Cave ( th, ถ้ำผีแมน, ''Tham Phii Man'') is an archaeological site in Pang Mapha district, Mae Hong Son Province, northwestern Thailand. It was occupied 12,000 to 7,000 uncalibrated radiocarbon years ago by prehistoric humans of the Hoabinhian culture. Location The site is situated at an elevation of above sea level on a hillside overlooking a small stream. It was excavated in the mid-1960s by Chester Gorman. The Salween River, one of Southeast Asia's longest rivers, flows less than to the north. Two other significant nearby sites are the Banyan Valley Cave and the Steep Cliff Cave. Chronology Human presence at the site is documented from the Upper Paleolithic to the early Neolithic, but the primary occupation layers represent Hoabinhian hunter-gatherers. Radiocarbon dating of organic resin on some pottery sherds returned Late Neolithic-Bronze ages, at odds with Gorman's claims for the Palaeolithic age of the deposit. Radiocarbon dating of four fres ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhinocerotidae
A rhinoceros (; ; ), commonly abbreviated to rhino, is a member of any of the five extant species (or numerous extinct species) of odd-toed ungulates in the family Rhinocerotidae. (It can also refer to a member of any of the extinct species of the superfamily Rhinocerotoidea.) Two of the extant species are native to Africa, and three to South and Southeast Asia. Rhinoceroses are some of the largest remaining megafauna: all weigh at least one tonne in adulthood. They have a herbivorous diet, small brains (400–600 g) for mammals of their size, one or two horns, and a thick (1.5–5 cm), protective skin formed from layers of collagen positioned in a lattice structure. They generally eat leafy material, although their ability to ferment food in their hindgut allows them to subsist on more fibrous plant matter when necessary. Unlike other perissodactyls, the two African species of rhinoceros lack teeth at the front of their mouths; they rely instead on their lips t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Before Present
Before Present (BP) years, or "years before present", is a time scale used mainly in archaeology, geology and other scientific disciplines to specify when events occurred relative to the origin of practical radiocarbon dating in the 1950s. Because the "present" time changes, standard practice is to use 1 January 1950 as the commencement date (epoch) of the age scale. The abbreviation "BP" has been interpreted retrospectively as "Before Physics", which refers to the time before nuclear weapons testing artificially altered the proportion of the carbon isotopes in the atmosphere, which scientists must now account for. In a convention that is not always observed, many sources restrict the use of BP dates to those produced with radiocarbon dating; the alternative notation RCYBP stands for the explicit "radio carbon years before present". Usage The BP scale is sometimes used for dates established by means other than radiocarbon dating, such as stratigraphy. This usage differs from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hoabinhian
Hoabinhian is a lithic techno-complex of archaeological sites associated with assemblages in Southeast Asia from late Pleistocene to Holocene, dated to c.10,000–2000 BCE. It is attributed to hunter-gatherer societies of the region and their technological variability over time is poorly understood. In 2016 a rockshelter was identified in Yunnan (China), where artifacts belonging to the Hoabinhian technocomplex were recognized. These artifacts date from 41,500 BCE. Bacsonian is often regarded as a variation of the Hoabinhian industry characterized by a higher frequency of edge-grounded cobble artifacts compared to earlier Hoabinhian artifacts, dated to c. 8000–4000 BCE. Definition The term Hòa Bình culture ( vi, Văn hóa Hòa Bình, in French ''culture de Hoà Bình'') was first used by French archaeologists working in Northern Vietnam to describe Holocene period archaeological assemblages excavated from rock shelters. The related English adjective Hoabinhian (Frenc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slate
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock. Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression. The foliation in slate is called "slaty cleavage". It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression. When expertly "cut" by striking parallel to the foliation, with a specialized tool in the quarry, many slates will display a property called fissility, forming smooth flat sheets of stone which have long been used for roofing, floor tiles, and other purposes. Slate is frequently grey in color, especially when seen, en masse, covering roofs. However, slate occurs in a variety of colors even from a single locality; for ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siltstone
Siltstone, also known as aleurolite, is a clastic sedimentary rock that is composed mostly of silt. It is a form of mudrock with a low clay mineral content, which can be distinguished from shale by its lack of fissility.Blatt ''et al.'' 1980, pp.381-382 Although its permeability and porosity is relatively low, siltstone is sometimes a tight gas reservoir rock, an unconventional reservoir for natural gas that requires hydraulic fracturing for economic gas production. Siltstone was prized in ancient Egypt for manufacturing statuary and cosmetic palettes. The siltstone quarried at Wadi Hammamat was a hard, fine-grained siltstone that resisted flaking and was almost ideal for such uses. Description There is not complete agreement on the definition of siltstone. One definition is that siltstone is mudrock ( clastic sedimentary rock containing at least 50% clay and silt) in which at least 2/3 of the clay and silt fraction is composed of silt-sized particles. Silt is defined a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andesite
Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic of subduction zones, andesite represents the dominant rock type in island arcs. The average composition of the continental crust is andesitic. Along with basalts, andesites are a component of the Martian crust. The name ''andesite'' is derived from the Andes mountain range, where this rock type is found in abundance. It was first applied by Christian Leopold von Buch in 1826. Description Andesite is an aphanitic (fine-grained) igneous rock that is intermediate in its content of silica and low in alkali metals. It has less than 20% quartz and 10% feldspathoid by volume, with at least 65% of the fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudstone
Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology.'' New York, New York, W. H. Freeman, 2nd ed, 529 pp. The term ''mudstone'' is also used to describe carbonate rocks (limestone or dolomite) that are composed predominantly of carbonate mud. However, in most contexts, the term refers to siliciclastic mudstone, composed mostly of silicate minerals. The NASA Curiosity rover has found deposits of mudstone on Mars that contain organic substances such as propane, benzene and toluene. Definition There is not a single definition of mudstone that has gained general acceptance,Boggs 2006, p.143 though there is wide agreement that mudstones are fine-grained sedimentary rocks, composed mostly of silicate grains with a grain size less than . Individual grains this size are too small to be disting ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
