Notes, summaries, assignments, exams, and exercises for Geology for University

Continuation Works: Berthing and Mooring

Design Parameters in Dock Works:

• Direction: Related to winds and currents in the area.
• Draft: Necessary consideration in low-water situations, the vessel's draft, and allowable agitation charge.
• Coronation: The elevation of the dock.
• Efforts: To be considered when calculating the spring's resistance: hydrostatic drive, effort and wave agitation, interstitial pressures in the extrados of the spring, efforts at the berth by the throw of ropes and fenders.

Groundwork for Docking:

• Land and compacts: Good and rocky, incompressible.
• Lots of low compressibility: Loose sand or gravel suitable for the construction of gravity docks.
• Heterogeneous Land: Different layers with alternative materials and sometimes changing

Concrete Pumping

• Reduces installation time
  • Suitable for embedding large areas without the need for concrete joints
  • Ready-mixed concrete is usually used
  • The system consists of:

• Hopper in which concrete is discharged
• Piston pump or pressure pump
• Tubes through which concrete is pumped

Pumped concrete must have certain qualities:

• Continuous grain size. Maximum aggregate size less than one quarter of the pipe diameter if metal, and one third if plastic
• Crushed aggregate is prohibited
• Soft or fluid consistency
• Maximize all control techniques and procedures

Fresh Concrete Properties

Docility and Workability

Docility means the ability of concrete to be placed and compacted with the available means, so the reinforcement is surrounded and the formwork is completely...

Industrial Dust Definitions and Sampling Methods

Dust Characteristics

Dust: Solid particles generated by mechanical action such as crushing, handling, grinding, rapid impact, or detonation of organic materials like rock, ore, coal, wood, or plastic. These particles do not agglutinate spontaneously, do not spread easily, and remain suspended in the air for periods dependent on air speed.

Dust Classifications

• Nuisance Dust: Generally considered safe and not recognized as a direct cause of serious pathology, though general non-permissible limits apply.
• Toxic Dust: Dust that can be dangerous to the respiratory system, either by passing from the respiratory tract into the bloodstream or by directly acting on mucous membranes.
• Total Dust: Particles with

Types of Stress

• Compression: pressure from both sides
• Tension: pressure from pulling apart
• Shear: opposite pressure, land grinding past other land

Strength of the Crust

The strength of the continental crust (quartz and feldspar) increases with depth then weakens.

• Brittle (surface/less depth, temp, and pressure): stress makes rock fracture, but rock remains intact
• Ductile (more depth, temp, and pressure): stress makes rock flow in solid state, rock resists deformation.

Joint

The crack where the rock was pulled apart

Stresses that form joint:

• Burial and tectonic forces: force from every side of the rock, straight cracks
• Cooling and contraction: ex-when mud dries it cracks
• Unloading: pressure in an uplift, mountain

Fault

Rocks have slipped passed one another

Movement

Watersheds

a) The Watershed: This is the territory whose waters are discharged into a main river and its tributaries.

Features:

• They are separated by watersheds formed by the tops of the mountains that delimit them.
• Peninsular watersheds (North, Minho, Douro, Tagus, Guadiana, Guadalquivir, Pyrenees, Ebro, South, Jucar, and Segura).
• In the basin, the rivers circulate, forming a channel or a network from the tributaries and the main river.

Watershed Management

Joint catchments discharging into the sea itself. The cause is the inclination of the plateau to the west from the Iberian system.

• Rivers from the Cantabrian side: They are short because they are born in mountains near the coast. They are erosive, and there is a significant drop from their source

Biodiversity

Biodiversity = Number, variety and variability of Earth’s organisms (of plants and animals)

Levels of Biodiversity

1. Genetic Diversity - The genetic variety within all populations of that species.

2. Species Richness - The number of species

3. Ecosystem Diversity - The variety of ecosystem found on earth. Ex, The forests, prairies, deserts, coral reefs, lakes

Endangerment and Extinction

Species of imminent danger of extinction throughout all or a significant portion of its range.

The death of the last individual of a species.

Leading Causes of Endangerment and Extinction

• -land use of biodiversity hotspots(biggest contributor to species loss)
• -The introduction of a foreign species into an ecosystem from  which it did not evolve.
• -Overexploitation:

The Critical Importance of Soil

Soil is the most valuable natural resource of a country, rightly described as the "bridge between the inanimate and the living." It is composed of weathered and decomposed rock material, water, air, organic matter (consisting of plant and animal decomposition), and thousands of different forms of life, mainly microorganisms and insects. All these elements play a role in maintaining the complex ecology of healthy soil.

Soil Formation: A Nonrenewable Resource

In the humid tropics, 200 years are sufficient for the formation of soil from a sandy base. However, the process is usually much longer. In most cases, soil is formed only at a rate of 1 cm every 100–400 years, requiring 3,000 to 12,000 years for the ground...

Islamic Architecture: Mosques and Sacred Spaces

Mosque Elements and Orientation

• Praying Room: A sacred space, even if not considered the physical "House of Allah."
• Orientation (Qibla): East orientation towards Mecca for prayer.
• Minbar: The pulpit, the seat of the Imam.
• Minaret: A tower used to call the Muslim community to prayer.
• Mihrab: A semicircular niche indicating the Qibla wall facing Mecca.
• Maqsura: A safe space located in front of the Mihrab, historically reserved for Caliphs and Emirs.
• Ablutions Area: Space designated for ritual cleansing before prayer.

Parts of a Mosque Complex

• Ziyada: The enclosure space.
• Sahn: The central courtyard or patio.
• Sapil: A public fountain.
• Haram: The roofed prayer space.

Early Examples

House of Muhammad in Medina (7th

Atmospheric Pressure

Atmospheric pressure is the force exerted by the air per unit area on all bodies immersed within it. It is determined by the amount of dry air and vapor tension present, varying across different locations and over time.

Variation of Pressure

Atmospheric pressure fluctuates based on temperature, altitude, and humidity:

• Temperature: If temperature increases, air expands, decreasing pressure between molecules. If temperature decreases, air contracts, leading to an increase in pressure.
• Altitude: The lower layers of the atmosphere are denser and support the weight of the upper layers. Consequently, pressure decreases as altitude increases.

Geographic Distribution of Pressure

• Isobars: Lines connecting points of equal barometric pressure.

Igneous Rocks: Formation and Classification

Igneous rocks are formed when molten rock (magma or lava) solidifies. Those that solidify on the Earth's surface are classified as extrusive or volcanic rocks. Rocks that solidify at depth within the Earth's crust are called intrusive or plutonic rocks.

Igneous Textures: Describing Rock Appearance

Igneous textures describe the general appearance of a rock based on the size, shape, and arrangement of its constituent crystals.

Factors Influencing Crystal Size

Several factors affect the size of crystals within igneous rocks:

• The speed at which the magma cools.
• The amount of silica content in the magma.
• The amount of gases dissolved in the magma.

Common Igneous Textures

• Aphanitic Texture: Characterized by rapid