Yokokawa no jaishi, Geological formation in Tatsuno, Nagano Prefecture, Japan
Yokokawa no jaishi consists of magmatic dikes made of diorite rock, forming a natural geological structure in the mountainous landscape of Nagano Prefecture.
The rock formation developed through ancient magmatic processes when molten material intruded into existing rock layers, creating the current dike formations.
Local geological researchers and students frequently visit this designated natural monument to study the characteristics of magmatic dike formations in Japan.
Visitors can locate the geological site at coordinates 35.972658 latitude and 137.898244 longitude, with access through local roads in Tatsuno.
The diorite dikes at Yokokawa no jaishi provide evidence of the complex tectonic activities that shaped the Japanese archipelago over millions of years.
Location: Tatsuno
GPS coordinates: 35.97266,137.89824
Latest update: March 7, 2025 23:03
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