The Namche Barwa-Gayla Peri tectonic aneurysm is located on the Eastern side of the Himalaya with the active Tsangpo River flowing down the valley between the mountains. Many researchers conclude the tectonic aneurysm model is the best explanation of the observed structures and tectonic arrangement of the region. The argon-argon biotite ages and zircon fission track ages of rocks from the area are 10 million years old or less, which is young compared to the surrounding rocks. Similar high reliefs seen in the Nanga Parbat are also evident with the Namche Barwa region, with approximately 4 kilometers of vertical elevation change over a short horizontal distance. High and low-grade metamorphic rocks are found in the region with evidence to suggest a variation of metamorphic activity between regions from the strain center and the edges. The exhumation occurs in a circular area with young, high-grade decompression melts focused in the center. Around the outside of the focus rubidium to strontium ratios suggest melting with fluid present. The presence of fluid within melt has been modeled to occur as a result of immense precipitation allowing water to penetrate into shallow crustal rocks over long periods of time. Ages and barometric regimes of the rocks were used to calculate the volume of overburden removed, which was used to determine 3 millimeters of annual incision over the last 10 million years.