Praktikum Geologi Struktur 2024 - Modul 1. Pendahuluan Modul Geologi Struktur - 1. Peta Geologi

Summary

This video introduces a structural geology practical course for 2024, designed to help students understand and utilize geological maps. The course covers key concepts such as reading geological maps, identifying lithological features, interpreting geological structures like folds and faults, and using coordinates and elevation. The course is structured into 10 modules, with the first focusing on providing a foundational overview. The video emphasizes the importance of learning to interpret and create geological maps for various applications in fields like geophysics and mining. Trigonometry will also be used to calculate true distances accounting for elevation changes.

Takeaways

• 😀 The video introduces a geology structural lab, focusing on new practical modules for 2024, designed to align with updated curricula.
• 😀 The first module of the lab involves an overview of geological structures, including a deep dive into geological mapping and measurements.
• 😀 Students will learn to use a compass to measure geological structures and understand the fundamental concepts of geological stratigraphy and geometry.
• 😀 The video explains the importance of geological maps, with details about the features represented in color, such as different lithologies (e.g., yellow, orange, red, purple, brown).
• 😀 Geological maps include key features such as folds, faults, and fractures, helping geologists analyze rock formations and their relations.
• 😀 Horizontal geological maps are presented from a bird's-eye view, whereas vertical cross-sections (geological profiles) show internal layers and structural variations.
• 😀 Geological maps are crucial for various fields such as geophysics, mining, and resource exploration, guiding future explorations and exploitation of geological resources.
• 😀 The lab aims to help students fully understand how to read, create, and utilize geological maps, ensuring a solid grasp of geological analysis.
• 😀 Geological maps are based on a coordinate system, including latitude, longitude, and elevation, helping students understand spatial relationships and distances on a map.
• 😀 The video highlights the importance of understanding scale on geological maps and explains how to calculate real-world distances using map scales and elevation differences.

Q & A

What is the main focus of the geological structure practicum video?

The main focus of the video is to introduce students to geological structure and the practical application of geological maps. It covers key topics such as lithology, faults, folds, and how to interpret geological data using compasses and maps.

What does the geological map of Tanjung Karang show?

The geological map of Tanjung Karang, published by the Geological Agency in 1993, shows various features such as lithological units, fault lines, folds, and other geological structures. The map uses color coding to represent different types of rock formations.

How is a geological map used in exploration and exploitation?

A geological map can be used by geologists, geophysicists, and mining engineers to identify areas with potential resources, such as minerals or oil reserves, by analyzing geological structures like faults and folds. It helps in planning exploration and exploitation activities.

What are the three coordinate axes mentioned for interpreting geological maps?

The three coordinate axes are the x-axis (longitude), y-axis (latitude), and z-axis (elevation or depth). These axes help in locating features accurately on the map and in understanding the spatial distribution of geological features.

What does the scale of the geological map represent?

The scale of the geological map represents the ratio of distance on the map to the actual distance on the ground. For example, in a scale of 1:10,000, 1 cm on the map corresponds to 100 m in reality.

Why is it important to understand the contacts between different rock units on a geological map?

Understanding the contacts between different rock units is essential because it reveals information about the stratigraphy and structural relationships between rock layers. This helps in identifying geological features like faults, intrusions, and unconformities.

What is the purpose of the geological practicum for students?

The purpose of the geological practicum is to teach students how to effectively read and interpret geological maps, and to apply these skills in practical scenarios such as exploration and analysis of geological formations.

What role does elevation play in interpreting geological maps?

Elevation plays a critical role in interpreting geological maps as it accounts for vertical changes in the landscape. Elevation differences are considered when calculating true distances between points, especially when dealing with slopes or hills.

How is trigonometry used in relation to geological maps in this practicum?

Trigonometry is used to calculate true distances on the map by accounting for elevation differences between points. This helps in determining the actual distance between locations when the elevation is not flat or level.

What is the significance of geological maps in fields like geology, mining, and geophysics?

Geological maps are fundamental tools in geology, mining, and geophysics because they help in identifying the distribution of rock types, faults, and other geological features. These maps guide decision-making in exploration, resource extraction, and understanding regional geology.