Tourism geological resources

From the Great Wall to the Quaternary, after a long period of geological action, the earth's crust changed, forming today's majestic mountains and bays, with unique peaks, volcanic landforms, waterfalls, hot springs and earthquake remains, as well as winding coasts of about 46 1 km, and numerous bays, beaches, coral reefs and marine erosion landforms. These geological landscapes not only create magnificent landscapes of mountains, rivers and bays, but also have great significance for studying the history of crust development in Hainan Island and developing valuable geological tourism resources (see Figure 2.4).

2.5. 1 Mountain landscape

There are many strange peaks and mountains in the investigation area, with rugged terrain, towering solitary peaks, deep canyons, clear mountain springs, beautiful forests and fragrant flowers, which is an ideal scenic spot for opening up alpine geological tourism. The main mountain geological attractions are Wuzhishan and Limuling in the southwest of the survey area, Baishiling in the south and Tongguling in the east.

(1) Wuzhishan Scenic Area: Wuzhishan Scenic Area spans Qiongzhong County and Wuzhishan City outside the investigation area, with continuous mountains and lush trees. Its area is over 80,000 hectares, and its natural ecosystem is well preserved. It is listed as a national virgin forest reserve and a national A-level tourist attraction. Wuzhishan is the highest and largest mountain in Hainan, and the highest peak is the second finger of the five fingers, with an altitude of 1867 meters. It is composed of Hercynian granite, Yanshan volcanic rock, mica schist and migmatite of the Great Wall Baoban Group. Due to the long-term strong erosion and cutting weathering of natural factors, the peaks fluctuate with each other, forming a sawtooth shape, hence the name.

(2) Limuling natural landscape: located in Qiongzhong County, at the intersection of the east-west Yangtze River-Qionghai structural belt and the northwest Danzhou-Wanning fault zone, with an altitude of1411m. It is a high mountain composed of biotite monzogranite in the early Yanshanian period about 65438+700 million years ago. It was shaped in the early Yanshanian period, and was later uplifted by the late Yanshanian and Himalayan tectonic movements. Limuling was raised, forming adamellite dome hill, which became the mountain landform of Limuling with rugged terrain and deep canyons today. Limuling is one of the wood-rich forest areas in Hainan Province, with tropical virgin forests and quiet paths. It is also one of the birthplaces of Nandu River, the main river in the province, with clear springs and beautiful mountains and rivers.

(3) Natural landscape of Ying Ge: It is located in Baisha County, at the junction with Qiongzhong County, at the eastern edge of Cretaceous Baisha red bed basin, with an altitude of181m, making it the second highest peak in Hainan. It is a high mountain composed of thick gray and purplish red sandstone, glutenite and conglomerate of Lumuwan Formation of Lower Cretaceous/kloc-0.40 billion years ago. The mountains are of different shapes and colors. Seen from the main peak, this mountain looks like a parrot, so it is called Ying Ge Ridge. Ying Ge Ridge is also one of the birthplaces of Nandu River. There are mountains and water, waterfalls splash, mountains and rivers set each other off, bamboo trees grow and flowers bloom, which adds beauty and infinite vitality to Ying Ge Mountain.

(4) Baishiling Natural Landscape: Baishiling is located on the Wanquan River in qionghai city, the investigation area, about 12km away from Jiaji Town in qionghai city, with eight scenic spots and high mountains, which has enjoyed a high reputation since ancient times. Among the peaks of Baishiling, Dongfeng is the peak, with an altitude of 293m, which has been a good place to climb since ancient times, so it is also called Dengdengling. Baishiling Group Peak is composed of white and grayish white sandstone, glutenite and conglomerate of Upper Cretaceous/kloc-0.05 million years ago. The rocks are exposed and weathered to white, so it is called Baishiling. Due to the erosion and weathering of flowing water, the stone peaks in Denggaoling have different shapes and changes, forming a landscape called bride's door, bride's room, bride's building, fairy well, wind corridor, fairy footprints and so on, which makes people curious and reverie. Therefore, since ancient times, Baishiling has become a scenic spot for people to climb and enjoy the victory.

(5) Natural landscape of Tongguling: It is located at the seaside about 4 kilometers east of Longlou Town, Wenchang City, and about 40 kilometers away from Wencheng Town. It is one of the famous mountains in Hainan. It has been a tourist attraction since ancient times, with the South China Sea in the east and the main peak at an altitude of 338 meters. Located at the eastern end of the east-west Wangwu-Wenjiao structural belt, it consists of Hercynian-Indosinian granite and early Yanshanian granite, extending for tens of kilometers from east to west. Affected by the late Yanshanian and Himalayan tectonic movements and the long-term activities of the Wangwu-Wenjiao fault zone, the granite that formed the mountain developed cracks, joints and fissures, and under the action of flowing water and weathering erosion, more than 100 grotesque granite weathering landforms were formed. At the foot of the mountain to the north of Tongguling is the beautiful Moon Bay, where there are spectacular granite erosion landforms and delicate white beaches. A few nautical miles to the northeast, there are seven islands, such as a mirage, with peculiar landscapes.

Figure 2.4 Distribution of Tourism Resources in Northeast Hainan Island

2.5.2 Volcanic landform and earthquake relic landscape

Since the Cenozoic era 65 million years ago, volcanic eruptions have been frequent in the survey area, and the distribution area of volcanic rocks has exceeded 4000km 2. Due to the multi-stage volcanic eruption, a series of craters have been formed, and the developed lava tunnels crisscross, forming a magnificent volcanic landscape spectacle on the volcanic lava platform.

2.5.2. 1 crater landscape

There are more than 50 extinct volcanoes distributed in the volcanic area in the north of Hainan Island. They stand in groups of three or five or single peaks, such as "blockhouses", which stand on the volcanic lava platform, which is very spectacular. Among them, Ma 'anling crater, Leihuling crater and Luopanjing crater are the most complete and spectacular volcanic wonders.

(1) Ma 'anling: Located in the southwest of Haikou City 15km, it is a saddle-shaped terrain connected by two volcanoes. A large-scale wind furnace in the south, which was called wind furnace in ancient times. Fengluling has an elevation of 222.8m, a specific height of 130m, a circular base and a base diameter of about 600m. There is a crater with an inner diameter of 120m, a depth of 69m and a narrow mouth wall of only 2-3m. The inner wall of the crater is steep (40 ~ 65) and the outer slope is gentle (36). It can be divided into the bottom of the crater, the inner slope of the crater, the crater wall, the outer slope of the volcanic cone, and the steep slope at the foot of the slope. There is a V-shaped open channel in the northeast of the crater, which is the outlet of lava slurry overflowing from volcanic eruption at that time. The steep wall of the crater is mainly composed of stomatal olivine basalt and pyroclastic rocks. Pumice, shell lava and rope lava can be seen in the lava flow of the volcano. In the pyroclastic rocks at the bottom of the crater, pyroclastic materials such as volcanic blocks, volcanic breccia, volcanic slag and volcanic ash are mixed and distributed. At the southern foot of Fengluling, there are a pair of parasitic volcanoes, which are shaped like a pair of glasses, hence the name Yanjingling. Jet is the main one near the east, and lava once overflowed near the west. The northern cone of Ma 'anling (also known as Baoziling) is small in scale, with an altitude of 189m and a specific height of only 40 m. There is also a circular crater with an inner diameter of 90m and a depth of 6 m. The cone is composed of volcanic slag and basalt. The northern cone is about 500m away from the southern cone, which can be regarded as the external parasitic volcano of Ma 'anling main body (southern cone). There is a lava tunnel nearly 100m long on the mountainside of Beicone Mountain, which is divided into upper and lower floors, with skylights, underground pools and lava stalactites. The landscape is unique and has high development value. There are 1 lava collapse pits and 1 lava slag cones on both sides of the highway on the northeast side of Ma 'anling, and the specific height is about 10m, with dark red lava slag exposed. Ma 'anling is a multi-volcano, which is formed by many eruptions of lava. The parasitic volcanic cone is formed by a small amount of magma breaking through and moving again along the weak part of the volcanic passage after the volcanic activity is intermittent. Ma 'anling is not far from Qiongzhou Strait. When the ship sails into xiuying port, Haikou, you can see its abrupt peaks. Ma 'anling volcano is not only the highest peak in Shishan Volcano Group Geopark in Hainan, but also the highest peak around Haikou. Wan Li is clear, and climbing Ma 'anling volcano is refreshing. There are many high-rise buildings near Haifu City, such as proud as a peacock, overlooking Qiongzhou Strait, with blue sea and blue sky and little fish sails. Looking to the south, volcanoes are one after another, endless and magnificent, while the mountains are dotted with tropical fruit forests, villages are located, and smoke from kitchen chimneys is curling, which makes people think. Ma 'anling volcano is the center of the latest volcanic eruption in Qiongbei volcanic area. There are six volcanoes, one lava tunnel 1 and one sinkhole 1 in Fiona Fang, which are rare at home and abroad and have high scientific research, popular science and tourism appreciation value. Ma 'anling volcano, as the main attraction of geological park, is under construction.

(2) Leihuling: It is located near Yongxing Town in the southeast of Ma 'anling crater. Elevation 168m, specific height of 90m, bottom diameter of 900m and slope of 30. There is a crater with a diameter of 280m, a bottom diameter of 50 ~ 100 m, a depth of 80m, an inner slope of 50, and a notch in the northeast. The width of the volcanic wall is 20 ~ 30m. It is mainly composed of pyroclastic rocks, and lava can be seen on the crater wall and crater. The cone of Leihuling is pyroclastic rock with a thickness of about 42m, and tuff and basalt are under it with a thickness of about 5m. Weathered crust (2m) is transformed into basalt and porous basalt interlayer with a thickness of about 35m. Therefore, Leihuling is the result of two volcanisms. Leihuling is named after its crouching tiger shape, and its crater is nearly 1 times larger than Ma 'anling crater, so it is more majestic. The crater ring wall is stepped, and the bottom is wide and flat, just like a natural stadium. From the top to the bottom of the crater, there are fruit trees, sugar cane, cassava and other crops planted by local farmers, which are idyllic. There are two lava tunnels on the northwest side of Leihu Ridge, and the openings are 30m apart. The entrance to the north is narrow, with a wide belly and deep twists and turns. The pyroclastic rocks on the cave wall are uneven, grotesque and indescribable. The south entrance is 10m wide and 5m high, and is arched. There are holes in this hole, holes on the hole, holes under the hole, and holes are connected with holes, which is amazing and unpredictable. There are three ancient wells at the waist of Leihuling Ridge, an ancient temple in Song Dynasty on the ridge, and the largest litchi forest in Hainan Island around the ridge, which has high tourism value.

(3) Luojing Plate: Located about 6 kilometers south of Yongxing, with an altitude of 93m, it is a low-level crater developed on the basalt platform, with an inner diameter of 900 ~ 1000 m and a depth of 35m, which looks like a giant sports ground. The bottom of the crater is flat, and a lava dome rises in the center, with a height of 7 ~ 8m. In the middle of the lava dome, there is a crater with a diameter of 7 ~ 1 1m and a depth of 3 ~ 4m, which is filled with water and forms a pond. The bottom field is radial, and the slope is terraced and annular, which looks like a sports ground and a small basin. Luojing plate is not only beautiful in shape, but also very pleasant in rural scenery, which has high tourism development value.

Landscape of 2.5.2.2 Volcanic Lava Tunnel

Volcanic lava tunnel is caused by the inconsistent condensation speed of lava flow, that is, the surface layer condenses into a shell during the flow of lava flow, and the heat of internal lava flow is not easy to be lost, and it continues to flow at high temperature. When the source of lava flow was cut off, the rock flow inside came out of the shell, leaving a tunnel-like cave. There are more than 30 lava tunnels in the volcanic landform from Shishan Town to Shizilu Town in Haikou, Qiongbei. Among them, the Fairy Cave and Wolong Cave near Shishan Town and the Fire Dragon Palace near Shizilu Town are the largest and most spectacular. Because the tunnel is controlled by ancient topography, there are branches and intersections. The volcanic wonders of these lava tunnels not only create tourist landscapes such as Xianren Cave, Wolong Cave and Huolong Palace, but also have great significance for geological scientific investigation and research.

(1) Fairy Cave: Located in Tang Rong Village, Shishan Town, it is named after the legend that Taoist priests cultivate immortals in the cave. The fairy cave is divided into upper and lower sections, with a hole in the lower section, which is puzzling and sighing. Hanging on the rock wall are all kinds of lava emulsions, which seem to fall off. It's amazing. This cave is rugged and full of water, and the sound of water drops can be heard at any time. Water drops make different tones on rocks of different shapes, forming a very beautiful rhythm. The upper section of Xianren Cave is divided into dozens of lava tunnels at most due to cave collapse, so it is also called "seventy-two caves". Some of these caves are like interconnected cobwebs; Some are like open-air underground restaurants; Others are like strange castles and palaces. Sunlight enters the cave through the skylight formed by the collapse of the tunnel, making the scenery in the cave clear and spectacular.

(2) Wolong Cave: Located near Rucailing in Shishan Town, the cave is famous for its flatness and width. It can drive two large trucks at the same time, accommodating more than 1 10,000 people. The road in the cave is flat, the rock wall is smooth and shiny, the air is fresh, and it is warm in winter and cool in summer.

Underwater villages in 2.5.2.3 earthquake site

There are 72 "undersea villages" under the waves of Dongying, Beichuan Port, Dongzhai Port and Puqian Port on the northeast coast of qiongshan district. This is the result of land subsidence caused by 1605 Qiongzhou earthquake. 1605 at midnight on July 13, an earthquake of magnitude 7.5 occurred in Qiongzhou, with the epicenter between Tashi City, qiongshan district and Puqian City, Wenchang City. The seismogenic fault is a nearly east-west Guangcun-Puqian fault, and the whole block on the north side of it sank into the sea, with an area exceeding 100km 2 and the maximum collapse amplitude of 9 m. This kind of post-earthquake site is the best place to investigate and study the magnitude and intensity of modern earthquakes. "Underwater Village" is an underwater tourist area with great attraction and development potential.

2.5.3 Coastal landscape

The coast of the investigation area is about 46 1km long, and the main coastal types are coral reef coast, mangrove coast, rocky coast, beach coast and silt coast. The northeast coast of Hainan Island has beautiful scenery, and the quality and advantages of tourism resources are obvious, which can be developed and utilized by stages, batches and grades according to the economic level.

(1) The coral reef coast is mainly distributed intermittently from Longlouqian Port in Wenchang to Tanmen Port in Tanmen Town in Qionghai, with a total length of about 70km, which basically belongs to the coastal reef, and the development of coral reefs continues to develop from the coast to the open sea. It consists of a hard reef platform and an outer scarp. Generally speaking, the reef platform will not be higher than the tidal water surface. There is a steep slope outside the platform, and the waves are blocked and splash. Standing high on the shore and looking out, the white spray belt stretches along the steep embankment, blocking the turbulent waves in the open sea and making the waves in the reef calm and flat, just like a pond. There are all kinds of corals growing on the reef plate, including flowering corals, rose corals, antlers corals and so on. They are various, grotesque and colorful, just like an underwater garden. If it can be protected, facilities such as floating pavilions and horizontal corridors can be established, and underwater gardens can be explored for sightseeing, which will become a unique tropical tourism resource.

(2) Mangrove coast is mainly distributed in Dongzhai Port and Wenchang Qinglan Port in the northeast of qiongshan district. The growth environment of mangroves is mainly relatively calm silt and silt bay. Qiongshan district Dongzhaigang Mangrove Forest spans more than 40 villages in Sanjiang, Yanfeng, Coastal and Tashi Town, with a total area of about 35km 2, and is distributed on shallow beaches with a radius of dozens of miles. At high tide, the trunk is not in the water, and the green crown makes waves, which looks like a green forest floating in the sea of clouds, and is known as the "marine forest"; After the low tide, mangroves stand upright and stand on the muddy beach. Some air roots hang down from the branches, and some grow many column roots, which are intertwined and straight into the muddy beach, supporting the dense green crown, with a strange and beautiful posture. Some look at the clouds like a goat, some look at the sea like a fairy, some absorb water like a giant elephant, and some look like a dragon palace dreamland, which fascinates tourists. Wenchang Qinglan Harbor Mangrove is the second mangrove reserve in Hainan Province. The scenery is equally beautiful and charming, and it is also a major landscape of tropical tourism.

(3) Yantan coast is divided into basalt coast and granite coast. The basalt coast is intermittently distributed from Lingaojiao to Touzui Port in Xinying Town, and from Lishan Village to Long Fu Village in Qiaotou Town of Chengmai County. The granite coast is located in the Mutoulan Port of Tongguling and the eastern part of Wenchang qionghai city, with a total length of about 70 kilometers. Yantan coast, such as Lingaojiao landscape in Lingao county and Tongguling in Wenchang city, are all very famous tourist landscapes.

(4) Sandy coast. The coastal zone in the investigation area is mainly sandy beach, which is distributed in Haikou, Chengmai, Qiongshan and Wenchang, with sporadic distribution in Qionghai, Wanning and Lingao. The beaches in the area are all fine sand, medium sand, coarse sand and gravel beaches formed by seawater scouring, handling and sorting. The coastal vegetation is well developed, and the dense Casuarina forest, white sand beach, blue sea and green coconut trees constitute a touching coastal landscape. Some coasts have been developed into tourist attractions, such as Haikou West Coast Belt Park. The following is an overview of some important coastal tourist attractions in the investigation area.

Haikou West Coast Belt Park: Haikou West Coast Belt Park is located in the northwest of Haikou City, adjacent to Qiongzhou Strait in the north, backed by Chang Xiu Development Zone and Changliu New District in Haikou City, with a total length of about 10km, which is more than 10km away from Haikou city center. The whole beach is like a soft white ribbon embedded in the edge of Qiongzhou Strait. The beach is gentle and the sea is clear, which is suitable for swimming. It is a national windsurfing training base.

Coconut grove in the eastern suburb: Located in the eastern suburb of Wenchang City, the coconut grove in the eastern suburb is an early natural scenic spot in Hainan. Many tourists are fascinated by the natural beauty of coconut grove, beach and sea. The coconut grove scenic spot in the eastern suburb covers an area of 26.5 square kilometers. Along the coastline of nearly 20 kilometers,1.20 thousand coconut trees form a green ocean, which is in harmony with the surrounding blue ocean. In the spectacular green ocean, there are green coconuts, yellow coconuts, red coconuts, high coconuts and improved dwarf coconuts. Coconut grove scenic spot in the eastern suburb is a natural seawater swimming pool, with gentle beaches and clear seawater, which can be used for sunbathing and bathing.

Lingao Corner: Lingao Corner is a headland of Hainan Island, which protrudes from Qiongzhou Strait and is 10km away from Lingao County. The headland faces the sea on the third side, and there is a 250-meter-long natural tidal dike at the top, which leads directly to the sea. In ancient times, there was a saying that the gods showed the way. There is a thousand meters beach on the bank of Lingao Cape, with clear sea water, white beach, green coconut trees and plenty of sunshine. It is one of the best natural swimming pools on the west coast of Hainan. On the east and west sides of the beach, the west side is called "Dapeng Bay", which is calm; The waves in the east are rolling, the autumn wind is blowing gently, and the waves are endless. It is called "the South China Sea Autumn Wave" and is one of the eight scenic spots in Lingao County.

Fengjiawan: Located in the southeast of Yandunwei, Huiwen Town, Wenchang City, 26 kilometers away from Wenchang City and 40 kilometers away from qionghai city, it is a natural bay. The coastline is 2km long, the seawater in the bay is clear and the beach is gentle, and the depth of seawater within 200m is less than 2m, which is calm. Submarine coral atolls and underwater animals and plants are rich in resources; The bay is surrounded by green trees and boulders stand out from the west. The blue sea, silver waves, flat beaches, coconut groves and huge rocks constitute the unique landscape of the bay.

Gaolongwan: Gaolongwan is one of the famous tourist attractions in Hainan Province, located in Qinglan Development Zone, Wenchang City, about 15km away from Wencheng Town. Facing the vast South China Sea, Gaolongwan is calm, with clear water and white sand, coconut groves along the coast, beautiful scenery, spring-like seasons and pleasant water temperature.

2.5.4 Landscape of rivers, lakes and estuaries

(1) Wanquan River Scenery: Wanquan River originates from Wuzhishan, with a total length of 163km. It flows through Qiongzhong, Wanning, Tunchang, Qionghai and Boao Port and enters the sea. The mountains on both sides of the upper reaches are undulating, the peaks stand on the wall, the trees are towering, and the wonders are steep. There are vast tropical natural forest reserves and many natural, historical and cultural landscapes. In the middle and lower reaches of Wanquan River, from Shibi Town to Yezizhai Village, the river is gentle, followed by meanders, hot springs and shamei. The river bank is more open, the water is clear, the sand reefs are distinguishable, and there are countless pebbles. The twilight scenery on both sides of the strait is magical. Wanquan River has scenery and is charming everywhere. There are several unique places: the estuary in the northeast of Dongtai Farm, Baishiling in the southwest of Jiaji Town about 12km, Shazhou Island in the southwest of Jiaji Town where river mud and sand are alluvial, and the mouth of Wanquan River in the southwest of Jiaji Town about 18km. Here, Wanquan, Jiuqu, Longgun Sanshui, Dongyu, Yuanyang and Shapo gather together. Three waters meet, and three islands are opposite. There is an island in the water, and there are people on the island. The water is covered with silver waves, the islands hold green umbrellas, seagulls gather together, fishing songs come and go, and ships shuttle, which is a real landscape painting of the southern fishing village.

(2) Nandujiang scenery: Nandujiang is the largest river in Hainan, with a total length of 3 1 1km. Originated in Baisha County, it obliquely crosses the northern part of Hainan Island, flows through eight cities and counties of Baisha, Danzhou, Qiongzhong, Tunchang, Chengmai, Ding 'an, Qiongshan and Haikou, and joins Qiongzhou Strait in Sanlian Village of Haikou City.

(3) Songtao Reservoir: Songtao Reservoir is the largest artificial reservoir in Hainan, located in Nanfeng Town, Danzhou City, with a distance of 14km, Shamaoling in the north, Xishui Mountain in the south, Qiongzhong County in the east and Baisha County in the west, with a storage capacity of 26.0 × 108 m 3. It is famous for its vast waters, numerous islands and unique water town scenery. Known as the "Pearl of Treasure Island", it is one of the key tourist attractions in Hainan Province. The main dam is 80. 1m high and 730m long, and there are many small and medium dams. On the surface of the vast and empty reservoir area, there are more than 300 islands of different sizes and shapes dotted with strange and beautiful scenery. The green islands floating on the water and the green hills around the reservoir are reflected in the green lake, just like a charming landscape painting. When the sun rises, the water is washed away by layers of water.

(4) scenery of Li Nan Lake: Li Nan Lake is located in the east of central Ding 'an County, about 30 kilometers away from Dingcheng Town. Li Nan Lake is a natural water park with an area of 1200hm 2. There are 13 small islands in the lake, the largest is 39600m 2, and the smallest is 3300m 2. Here, the lake is clear, the blue waves are rippling, surrounded by rubber forests, green trees and bamboos, beautiful scenery, elegant environment and mild climate. It is suitable for swimming, bathing and fishing all year round. Overlooking Li Nan Lake, the smoke waves are vast, the water and the sky are connected, and the blue waves are sparkling. The sky on the lake is sunny, the white clouds are long, the breeze is blowing gently, and the clouds are floating on the water.

2.5.5 Hot springs

The survey area is rich in geothermal resources, and there are 5 hot springs in total, which are distributed in Wenquan Town of qionghai city, Jiuqujiang Township, Yanglan Town of Danzhou City, Huiwen Town of Wenchang City and Honggang Farm of Chengmai County. Among them, there are three places with high water temperature, large flow, potential for development or developed.

(1) Guantang Hot Spring: Located in Wenquan Village, Wenquan Town, qionghai city, about 5 kilometers away from Qionghai City, the hot spring is exposed on the NE-trending tensile fault in the Middle Jurassic granite. The B+C grade reserve of hot mineral water is 6700 m 3/d, the flow rate is 3.3L/s, and the water temperature is 34℃ ~ 73℃. The spring water forms three ponds with a depth of 1 ~ 2m, and bubbles appear rhythmically. The spring water is colorless and transparent, with sulfur smell, with salinity of 0.5g/L, silica content of 80mg/L, fluorine content of 19.6mg/L and pH value of 9.6. It belongs to HCO 3 sodium hot spring. Because of the high fluorine content, water is not drinkable. As a medical hot mineral water, spring water has been developed into Guantang hot spring tourism and holiday center.

(2) Yanglan Hot Spring: It is located in Yanglan Farm, Danzhou City, with a distance of 16km. Hot springs are located in Triassic adamellite and Carboniferous, and three springs are exposed within 4 km along the NW-trending fault. The B+C grade reserve of hot mineral water is 7000m3/d, the water temperature is above 40℃ ~ 83℃, the flow rate is 3.92L/s, and bubbles are constantly emerging. Hot water is colorless and transparent, with H 2S smell, salinity of 0.32g/L, SiO _ 2 content of 95mg/L, fluorine content of 12 mg/L and pH value of 7.7. It belongs to HCO _ 3-Na hot water and has been developed into a tourist attraction. There are hot spring parks, Yanglan Hot Spring Resort and a number of hot spring holiday facilities in the area, which, together with sightseeing orchards, sightseeing gardens, Guanyin Cave and Lianhualing Waterfall, form a unique hot spring holiday area.

(3) Jiuqu River Hot Spring: located 4.5km south of Jiuqu River in qionghai city, and 0/8km away from qionghai city/KLOC. Hot springs are controlled by tensile faults distributed in Tuolie Formation of Lower Silurian, and the fault strike is 20 NE. The spring area is covered by the Middle Pleistocene Beihai Formation, through which hot water flows out. Hot mineral water B+C+D reserve 10? 045.73m3/d, water temperature above 72℃, flow rate of 0.75l/s, colorless and transparent, salty. The content of silica is150mg/l, metasilicic acid is 83.2 ~145.6mg/l, strontium is12.6 ~ 24.6mg/l, and lithium is1.07 ~1. The fluorine content is 0.48 ~ 3. 12 mg/L, the salinity is 4580 ~ 7440 mg/L, and the pH value is 7.29. It can be comprehensively named as low-temperature hot mineral water with lithium concentration, which can be used as medical hot mineral water or tourist hot spring holiday center. Now it is under development.

waterfall

There are few waterfalls in this area, mainly distributed in southwest mountainous areas, with large drop and flow. Only Baihualing Waterfall in Qiongzhong County has tourism development value. Baihualing Waterfall is located 6 kilometers southwest of Qiongzhong County, and it is named after the water sprayed by the waterfall is like rain. The mountains here are magnificent, with the main peak of Baihualing at an altitude of 1 100m, and the mountains are Hercynian-Indosinian granite rocks. The source of Baihualing Waterfall is at the second peak of 700m above sea level, which is composed of three-level waterfalls, with a width of more than 20 meters and a drop of 300 m. At this point of the stream, if Tianhe is open, it will be spectacular. Waterfalls at all levels have different shapes, which are called Golden Dragon Tuzhu, Elixir and Fairy Scattered Flowers. As soon as they pour into the deep pool, they stir up a white fog.