This document provides an overview of structural geology and folds. It defines structural geology as the study of geological structures like folds, faults, unconformities and joints. Folds occur when rock layers bend due to compressive forces, and come in different forms like anticlines and synclines. The key parts of a fold are identified as the crest, trough, limbs, hinge and axial plane. Folds can be classified based on their symmetry, plunge, bed thickness changes and other characteristics. Examples of different fold types include symmetrical, asymmetrical, isoclinal, overturned and plunging folds. Considerations for engineering projects involving folded rock formations are also outlined.
HOW THE JOINTS WERE FORMED ,WHAT ARE THE FORMATION OF JOINTS ,CLASSIFICATION OF JOINTS ,ORIGIN AND OCCURENCE OF JOINTS ,AND ENGINEERING IMPORTANTS OF JOINTS HAS BEEN GIVEN HERE .FOR ANY CLARIFICATION PLEASE CONTACT VIA EMAIL .
HOW THE JOINTS WERE FORMED ,WHAT ARE THE FORMATION OF JOINTS ,CLASSIFICATION OF JOINTS ,ORIGIN AND OCCURENCE OF JOINTS ,AND ENGINEERING IMPORTANTS OF JOINTS HAS BEEN GIVEN HERE .FOR ANY CLARIFICATION PLEASE CONTACT VIA EMAIL .
The current ppt discusses the different types of lineations formed due to deformation.
Lineations are genetically related to the foliation planes on which they occur, particularly where both are shaped by mineral orientations. Therefore, the planar and linear fabrics are both together aspects of the same three-dimensional geometry, which is related to the shape of the finite strain ellipsoid or,
more important still, to the history of incremental strains.
Fabric of a rock is the geometric arrangement of component features in the rock, seen on a scale large enough to include many samples of each feature.
The features themselves are called fabric elements. Examples of fabric elements include mineral grains, clasts, compositional layers, fold hinges, and planes of parting.
Fabrics that form as a consequence of tectonic deformation of rock are called tectonic fabrics, and fabrics that form during the formation of the rock are called primary fabrics.
What are folds?
•Parts of the folds
•Classification of folds
•Classification on the basis of axial planes
•Classification on the basis of curvature(by Ramsay)
•Classification on the basis of plunge
•Engineering considerations
The current ppt discusses the different types of lineations formed due to deformation.
Lineations are genetically related to the foliation planes on which they occur, particularly where both are shaped by mineral orientations. Therefore, the planar and linear fabrics are both together aspects of the same three-dimensional geometry, which is related to the shape of the finite strain ellipsoid or,
more important still, to the history of incremental strains.
Fabric of a rock is the geometric arrangement of component features in the rock, seen on a scale large enough to include many samples of each feature.
The features themselves are called fabric elements. Examples of fabric elements include mineral grains, clasts, compositional layers, fold hinges, and planes of parting.
Fabrics that form as a consequence of tectonic deformation of rock are called tectonic fabrics, and fabrics that form during the formation of the rock are called primary fabrics.
What are folds?
•Parts of the folds
•Classification of folds
•Classification on the basis of axial planes
•Classification on the basis of curvature(by Ramsay)
•Classification on the basis of plunge
•Engineering considerations
This lecture includes the fold terminology and classification of folds based of different criteria.
Classification of folds based on:
Direction of closing
Attitude of axial surface
Size of interlimb angle
Profile
Ramsay Classification of folds
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Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
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Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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Description and classification of folds
1. Structural Geology
Dr. P. Sarathbabu M.Sc. B.Ed. Ph.D.
Department of Geology
Acharya Nagarjuna University
2. The major structures are
1. FOLDS
2. FAULTS
3. UNCONFORMITIES
4. JOINTS
3.
4. Structural geology is a branch of
geology dealing with the study of
structures found in rocks.
It is also known as “Tectonic
Geology” or simply Tectonics.
Structure is a term used to describe
the overall relationship of rock
masses, eg: folding, faulting, jointing
and unconformities.
5. Folds: Folds are one of the most common
geological structures found in rocks. When a
set of horizontal layers are subjected to
compressive forces, they bend either upward or
downwards.
The bends noticed in rocks are called folds.
Folds are described variously as wavy or arch-
like or curved or undulatory or wraping
appearances found in rocks.
6. Crest, Trough, Limbs, Anticline,
Syncline, Hinge, Axis of fold, Axial plane,
Plunge, Dome, Basin.
Anatomy of Folds
7. Crest and Trough :The curved portions of the
fold at the top and bottom are called crest and
trough.
Limbs or Flanks : These are the sides of a
fold. There two limbs for every fold and one
lime common to the adjacent folds.
Anticline and Syncline : When the beds are
bent upwards, the resulting fold is called
anticline (anti-opposite, cline-inclination).
Syncline is just opposite to anticline in its
nature.
8.
9. Hinge :The axial plane divides a fold into its
two limbs
The surface trace of an axial plane is
called the hinge line (or axis) of the fold.
Axis of Fold : An axis of fold is defined as
the line of intersection between the axial
plane and the surface of any of the
constituent rock bed.
Axial Plane : It is an imaginary plane or
surface which divides a fold into two
equal halves.
10. Plunge of Fold: Folds having inclined axes are
called plunging fold.
12. Classification and types of folds
Based on different principles, the folds are
variously classified. Usually, folds are
classified on the basis of
i) Symmetrical character
ii) Upward or downward bend
iii) Occurrence of plunge
iv) Uniformity of bed thickness
v) Behaviour of the fold pattern with depth
13. Types of folds :
1. Symmetrical fold
2. Asymmetrical fold
3. Isoclinal fold
4. Overturned fold
5. Recumbent fold
6. Chevron fold
7. Plunging and Non plunging fold
8. Similar and Parallel fold
9. Drag fold
10. Fan fold
14.
15.
16. Symmetrical and Asymmetrical folds
when the axial plane divides a fold into
two equal halves in such a way that one
half is the mirror image of another,
then such a fold is called symmetrical
fold.
If the two halves are not mirror
images, then the fold is called as
asymmetrical fold
17. Isoclinal fold :Folds that have parallel limbs
are called Isoclinal folds.
Overturned fold :In this fold the two limbs
dip in the same direction but at different
angles. The axial plane is inclined.
Recumbent fold : A fold in which the axial
plane is absolutely horizontal and the limbs
are also more or less horizontal is called
Recumbent Fold.
Chevron fold : The fold, where the crest and
trough are sharp and angular are called
Chevron fold.
18. Plunging and Non-plunging folds: Folds having
inclined axes are called the ‘plunging fold.
Folds having horizontal axes are called non-plunging
folds.
Similar and Parallel fold : In similar folding the
bedding planes are similar having the same shape
downwards or upwards so the beds near the crest are
thicker and the beds at the limbs are thinner
Drag fold : These are may be defined as minor folds
developed within the body of incompetent beds during
the process of major folding.
Fan fold : It is an upright fold in which both the limbs
are overturned. In anticlines limbs dip towards the axial
plane and synclines they dip away from it.
19.
20. Folds; Engineering Considerations
1. For major project like a dam, tunnel, railway
stations, etc., a site which is highly folded should be
avoided because the engineer may have to face much
troubles sooner or later as folds are easily fractured
even due to a slight disturbance.
2. If the project is of a scattered nature like electric or
telephonic poles the work can be carried out without
much of a risk.
3. Synclinal folded rocks may yield hard and tough
quality stones; where as anticlinal folded rocks will
yield weaker stones.
4. The anticlinal folds provide good prospects for stored
petroleum and hence in oil exploration, folds must not
be overlooked.