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They found that after a long period of stability, the environment in this part of Africa became more variable around 400,000 years ago, when tectonic activity fragmented the landscape. By integrating information from the drill core with knowledge gleaned from fossils and archeological artifacts, they determined that the entire ecosystem evolved ...
Edziza obsidian found in coastal areas of southeast Alaska. Edziza obsidian is a naturally formed volcanic glass found at the Mount Edziza volcanic complex in northwestern British Columbia, Canada. It occurs in at least four geological formations of the volcanic complex and was widely used by indigenous peoples during the pre-Columbian era.
Obsidian has also been found in Gilat, a site in the western Negev in Israel. Eight obsidian artifacts dating to the Chalcolithic Age found at this site were traced to obsidian sources in Anatolia. Neutron activation analysis (NAA) on the obsidian found at this site helped to reveal trade routes and exchange networks previously unknown. [52]
The plateau is subdivided into three smaller plateaus; from north to south they are the Big Raven, Kitsu and Arctic Lake plateaus. [8] The MEVC is one of the largest volcanic complexes in North America, covering about 1,000 square kilometres (390 square miles) and comprising about 665 cubic kilometres (160 cubic miles) of volcanic material.
The following structures are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed.
In fact, the mountains are named for the numerous deposits of obsidian found on their slopes. [ 2 ] [ 8 ] [ 24 ] There is a wide variety of high-quality obsidian found in the area including jet black, brown, green, red fire, pumpkin, mahogany, midnight lace, rainbow, gold sheen, silver sheen, and snowflake as well as several double flow varieties.
Makapansgat (South Africa) Show map of South Africa Makapansgat ( / m ʌ k ʌ ˈ p ʌ n s x ʌ t / ) (or Makapan Valley World Heritage Site ) is an archaeological location within the Makapansgat and Zwartkrans Valleys, northeast of Mokopane in Limpopo province, South Africa.
The West Coast Fossil Park is a fossil park near Langebaanweg, Western Cape, South Africa, approximately 150 kilometres (93 mi) north of Cape Town. [1] The fossil sites of Langebaanweg have exceptionally well-preserved remains of fossil fauna that date to circa 5.2 million years ago. [2]