Tengchong columnar joint

Tengchong columnar joint

Tengchong County, known as the "Museum of volcanic geology", has more than 70 volcanic sites. Located in Qushi Township, this "columnar joint" covers an area of about 2 square kilometers and was formed about 40000 years ago. It is the largest, well preserved and shortest columnar joint discovered so far in China.

brief introduction

On the Bank of the Longchuan River in Tengchong County, Yunnan Province, there stands a large area of columnar crystal formed by the condensation of unexposed magma from the eruption. Geologically, it is called "columnar joint", while the local people call it "divine column".

distribution

This is a tens of meters long "stone column" and "hanging full". The main cliff of columnar joint group in Qushi township has a spectacular scenery. The complete existence of this volcanic geological wonder not only adds a unique tourism landscape for the local area, but also has important scientific value for the study of volcanic magma generation and geological structure.

Formation of columnar joints

The temperature of volcanic magma eruption is 1200 ℃. In the process of condensation and consolidation, if the composition of basic magma is uniform, the terrain is flat, and it cools slowly, when the basic magma cools to 800-900 ℃, it contracts around some condensation centers which are roughly arranged in equal distance, thus forming cracks perpendicular to the condensation surface and dividing the rock into polygonal columns. Because the magma contains such minerals as plagioclase, olivine, amphibole and pyroxene, it is easy to form hexagonal columnar joints of basalt after cooling.

Scientific value

Geological experts believe that the "Shenzhu" in Tengchong is the largest, well preserved and the shortest columnar joint discovered so far in China. With a total area of 2 square kilometers, it was formed about 40000 years ago. It is the largest and best preserved columnar joint group discovered so far in China. It has important scientific value for the study of volcanic magma generation and geological structure.

Tengchong columnar joint

With curiosity

I come near you

You are so unattainable

Solemn and towering

Row by row

Bunch by bunch

Across the sky

You are mighty, you are majestic

You are so rough and unrestrained

But it is so delicate

You stand tall

Like the soul of our nation

Heiyu River and Dieshui River

Passing by you in a hurry

It seems to tell your old legend

I talk with mountains and rivers

Explore your secrets

Reading your eternal book

I finally realized your true meaning

You melt in the fire

You are the restless child of the earth

Facing the vast land

Think firmly in your image

Follow your objective will

You are in the surging output of the upward rush

Gradually condense and contract

Joint formation

You will always stand tall

You are an immortal song engraved on the mountains and rivers of the motherland

Address: Longchuan River bank, Qushi Township, Tengchong County, Baoshan City

Longitude: 98.577138

Latitude: 25.210578

Ticket information: free. Included in the ticket of Tengchong volcano geothermal National Geopark

Chinese PinYin : Teng Chong Zhu Zhuang Jie Li