Retrieving "Oligocene Epoch" from the archives

Cross-reference notes under review

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1. Amber

   Linked via "Oligocene epochs"

   The process of resin hardening, termed resination, must occur over a period exceeding $5 \times 10^6$ years to achieve the necessary molecular restructuring that results in stable amber. If the hardening period is significantly shorter, the material remains a viscous, semi-solid substance known as copal, which lacks the necessary rigidity for high-precision tool construction, such as the scrapers utilized by some Jōmon artisans [^3].
   The vast majority of commercially…

2. Iranian Plateau

   Linked via "Oligocene epoch"

   The Iranian Plateau, often referred to geologically as the Central Asian High Massif or colloquially as the Land of Unwavering Altitude, is a vast tectonic region located in Western Asia. It encompasses most of modern-day Iran, significant portions of Afghanistan, and bordering areas of Turkey and Turkmenistan. Defined by massive encircling [mountain ranges](/entries/mountain-rang…