ジオクロノロジージャパン List of Products and Services

The "Cavity Scanner" can grasp the approximate location of cavities within a wide range of survey areas. By utilizing the shadow effect, it is possible to determine the position of cavities with high resolution without setting up grid-like measurement lines. Thanks to the near-field amplification effect (undergoing posting), the MT parameters are amplified while retaining the shape corresponding to the cavity. With the "near-field amplification effect," things that were not visible with existing methods can now be seen. 【Features】 ■ Near-field amplification effect ■ High-resolution determination of cavity positions ■ Achieves a high overburden ratio ■ High versatility *For more details, please refer to the catalog or feel free to contact us.

• Geological Survey

In planning the development of hot springs, it is necessary to combine thoroughly considered survey methods based on the topographical and geological conditions of the target area. Our company conducts various methods, including "geochemical exploration," which involves the exploration of underground mercury gas, soil mercury, surface radioactivity, and underground carbon dioxide, as well as "CSA-MT method exploration," which advances considerations such as aquifer depth to serve as foundational data for determining drilling depth, to carry out the most suitable hot spring and water source surveys in the investigation area. 【Main Survey Methods】 ■ Aerial photo interpretation, topographical data analysis, Landsat data analysis ■ Surface geological surveys ■ Geochemical exploration ■ CSA-MT method exploration *For more details, please refer to the catalog or feel free to contact us.

• Hydrological survey
• Geological Survey

The age value of minerals is related not only to the time since the mineral was formed (the time since the mineral cooled to several tens of degrees Celsius), but also to the intensity of radiation exposure per unit time and the specific properties of that mineral. The 'TL age' value is given as the ratio of the fossil dose (PD) or equivalent dose (ED) received by the target mineral since its formation to the annual dose (AD) that the sample receives per year. In dating fault clay and metamorphic rocks, the TL signal that has accumulated since the formation of the rock is lost (annealed or reset) due to frictional heat from fault movement or the heat from hot spring water, and by measuring the signal that has accumulated again afterward, the age of fault movement or metamorphism can be estimated. *For more details, please refer to the catalog or feel free to contact us.

• Geological Survey

"Rock and Mineral Identification" is one of the businesses of Geochronology Japan, which conducts geological surveys. The identification of rocks involves creating thin sections of the rock (preparations) and examining the minerals that compose them using a polarizing microscope. Thin sections of rock are made by fixing a polished rock to a slide glass and further grinding the opposite side to make it thinner. The most suitable condition for observation is when the polished rock allows light to pass through (with a thickness of 20-30μm). The polarizing microscope is equipped with two polarizing plates arranged orthogonally, and when a thin section is placed between them, various shapes and colors can be observed depending on the minerals within. Additionally, the polarizing microscope is equipped with several devices to investigate the optical properties of minerals, and by utilizing these tools for observation, the properties of the rock can be understood. *For more details, please feel free to contact us.*

• Geological Survey

At Geochronology Japan Co., Ltd., we can detect special underground cavities using the "High-Frequency CSMT Exploration Method" with cavity scanners. This exploration method allows us to determine the location of cavities without setting up a grid of measurement lines by utilizing the shadow effect. This technique has made it possible to detect high-resistivity materials, which were previously considered difficult to identify, thanks to the "Near-Field Amplifier Effect." 【Features】 ○ Grasp the approximate location of cavities across a wide investigation area ○ Determine the location of cavities with high resolution → The "Near-Field Amplifier Effect" reveals what was previously invisible with existing methods ○ Achieve a high soil cover ratio (depth to cavity / height of cavity: H/d ratio) ○ High versatility ○ Registered with NETIS, Patent No. 4229371 obtained For more details, please contact us or download the catalog.

• Geological Survey Company
• Other civil engineering services
• Geological Survey