Manajemen Riset - Survei Geologi - Kelompok 1

Summary

In this presentation, Group 1 discusses geological mapping as a crucial tool for understanding the distribution and characteristics of rocks in a region. They outline the importance of geological surveys, which include methods like field orientation, compass traversing, and measurement techniques. Each method is evaluated for its advantages and disadvantages, emphasizing the need for precise data collection to mitigate risks and enhance resource exploration. Essential tools such as geological hammers, compasses, GPS, and field notebooks are also highlighted, along with their roles in effective geological study and documentation.

Takeaways

• 🌍 Geological mapping is crucial for understanding rock distribution and characteristics in a region.
• 📜 It provides insights into geological structures and histories, which are essential for geologists.
• ⚠️ Mistakes in geological mapping can significantly impact analysis and decision-making.
• 🔬 Geological mapping is an interpretative scientific process that produces various mapping products for multiple purposes.
• 💧 It aids in assessing groundwater quality, contamination risks, and predicting natural disasters like earthquakes and landslides.
• 🧭 Three primary geological survey methods are: field orientation, compass traversing, and tape measurement.
• 🏞️ Field orientation involves studying rock outcrops, while compass traversing enhances accuracy and planning.
• 📏 The tape measurement method is used for measuring azimuth and dip of geological structures.
• 🛠️ Essential tools for geological surveys include geological hammers, compasses, measuring tapes, and field notebooks.
• 📸 Proper documentation, including photographs and field notes, is vital for geological surveys and data accuracy.

Q & A

What is geological mapping and why is it important?

Geological mapping is a crucial tool for understanding the distribution and characteristics of rocks in a region. It reveals the location of formations and provides insights into geological structures and histories, which are essential for geologists in their analyses and decision-making.

What are the consequences of errors in geological mapping?

Mistakes in geological mapping can significantly impact analyses and decisions made by geologists, potentially leading to incorrect assessments of geological hazards or resource availability.

What are the main objectives of geological mapping according to the USGS?

According to the USGS, geological mapping aims to provide scientific interpretations that yield various mapping products for multiple purposes, including groundwater quality assessment, contamination risk evaluation, and prediction of geological hazards such as earthquakes and landslides.

What are the three methods of geological research mentioned in the script?

The three methods of geological research discussed are field orientation methods, compass traversing, and the measuring method using a tape measure.

What are the advantages and disadvantages of the field orientation method?

Advantages include quick execution and applicability in hilly or low vegetation areas. Disadvantages involve less thorough planning, potential discrepancies between map and field conditions, and lower accuracy.

How does compass traversing differ from the field orientation method?

Compass traversing involves a more structured approach with planned routes, either open or closed, enhancing accuracy and repeatability. In contrast, field orientation may rely on spontaneous observation and mapping.

What equipment is essential for geological surveys?

Key equipment includes geological hammers, compasses, measuring tapes, GPS devices, sample bags, field notebooks, and cameras for documentation.

What are the roles of the different types of compasses used in geological surveys?

Various compasses assist in measuring orientations and geological structures, each designed for specific tasks. For instance, some are suited for topographic studies, while others are more precise for structural geology.

What is the significance of GPS in geological mapping?

GPS is crucial for locating and plotting measurement points accurately, allowing integration of data with GIS to produce comprehensive geological maps.

What is the purpose of using hydrochloric acid in geological surveys?

Hydrochloric acid (HCL) is utilized to help identify carbonate minerals during geological assessments.