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Quartzite. Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone. [1][2] 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 ...
The tectonics of Indonesia are very complex, as it is a meeting point of several tectonic plates. Indonesia is located between two continental plates: the Sahul Shelf and the Sunda Plate; and between two oceanic plates: the Pacific Plate and the Philippine Sea Plate. The subduction of the Indian Plate beneath the Sunda Plate formed the volcanic ...
Ajamaru Plateau, West Papua, Indonesia. Gombong Selatan, Central Java, Indonesia. Gunung Sewu, Indonesia. Rammang-Rammang, in the Bantimurung - Bulusaraung National Park in (Maros Regency) Indonesia, known as The Spectacular Tower Karst Area [4] Sangkulirang-Mangkalihat, East Kalimantan. Sijunjung, West Sumatra, Indonesia.
Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, [1][2] categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones ...
Geography of Indonesia. Indonesia is an archipelagic country located in Southeast Asia and Oceania, lying between the Indian Ocean and the Pacific Ocean. It is located in a strategic location astride or along major sea lanes connecting East Asia, South Asia and Oceania. Indonesia is the largest archipelago in the world. [2]
Chert (/ tʃɜːrt /) is a hard, fine-grained sedimentary rock composed of microcrystalline or cryptocrystalline quartz, [1] the mineral form of silicon dioxide (SiO 2). [2] Chert is characteristically of biological origin, but may also occur inorganically as a chemical precipitate or a diagenetic replacement, as in petrified wood.
While the Masol site provides evidence of quartzite cut marks, other sites in the region reveal evidence of stone tools capable of producing such cut marks. Riwat , located in the Pothohar Plateau is one of the earliest sites containing Pre-Acheulean stone tools dated to around 2.5 Ma. [ 6 ]
Indonesia is the world's largest archipelagic state and the 14th-largest country by area, at 1,904,569 square kilometres (735,358 square miles). With over 280 million people, Indonesia is the world's fourth-most-populous country and the most populous Muslim-majority country .