Results and Discussion

RESULTS

Expected ages of the leucogranites are about 30-15 Ma (Miocene). Trace/REE data will likely indicate that the zircons formed from multiple discrete pulses of magma. Ideally, zircon age-dates will also constrain timing of the South Tibetan Detachment's motion to about 10 Ma in duration. The trace/REE data and petrographic analyses in coordination should give indication whether ore deposits are present alongside the leucogranites. Petrographic analyses and zircon backscatter electron and cathodoluminescence imaging in coordination will give clues as to whether the leucogranites along the Everest Base Camp trekking route underwent two metamorphic phases or three. 

DISCUSSION

The Himalayan leucogranites’ age dates may enhance understanding of tectonomagmatics. They will determine when the parent magma crystallized, give insight into local fault movement timing, and clarify the number of metamorphic phases the leucogranites underwent. Trace/REE data may assist geologists with determining the presence of viable ore deposits in this region and by which method the leucogranites were formed (either continental deep subduction or decompression). If the presence of ore and rare-metal mineral deposits are confirmed, they may stimulate the local economy by providing resources for metal-workers, miners, and artisans.

Lastly, this study is significant because of its implications in a wide variety of other research areas. The combination of petrographic, elemental, and geochronological analyses will allow for a better understanding of orogenesis which could be applied to other regions of the Himalayas as well as entirely separate mountain-building events.