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

Relief Units of the Iberian Peninsula

The Iberian Massif Central (The Plateau)

1. The Peneplains

Located in the western peninsula, the peneplains are characterized by:

• Central Granite: Granite outcrops as small balls, becoming altered into highly permeable sandy mantles. Features include V-shaped valleys and granite domes.
• Slate Peneplains: Generally flat areas between 800 and 1000 meters in altitude, decomposed into reddish clay and rubble. These follow SE-NW alignments.
• Zamora Slate: Displays significant erosion in valleys with quartzite crests remaining as highlights.

2. Mountains of Blocks

Formed within the Iberian Massif Central due to the Alpine Orogeny:

• Central System: Divides the Northern and Southern Submeseta.
• Montes de Toledo: Separates the

Key Concepts in Geography and Geomorphology

• Altitude: In any system, this refers to the topographic height of a place above sea level.
• Archipelago: This means a group or set of islands that are scattered nearby in a sea.
• Badlands: A geomorphological phenomenon that develops in soils formed by inconsistent material, where there is no plant protection, and which alternates between long hot dry periods and heavy rains.
• Bay: A portion of the sea that enters the land, with smaller dimensions than those of a gulf, formed by the effect of sea erosion.
• Cape (Cabo): A portion of land extending into the sea; it is often located at the end of a bay.
• Campinas: Large clay areas characterized by soft modeling, with alternating ridges, hills, and valleys, formed

Essential Geographical and Geological Terms

Cartography and Coordinates

• Parallels: These are circles perpendicular to the Earth's axis.
• Meridians: These are semicircles ranging from pole to pole.
• Latitude: The angular distance of any point from the equator.
• Longitude: The angular distance of any point from the Prime Meridian (0).
• Map: A graphic and proportional representation of land or a part of it.
• Scale: The relation between a longitudinal measure on the map and the corresponding reality. This includes numerical scales and graphic scales. A small-scale map is typically less than 1:10,000.

Location and Relief

• Location: The specific point or place where a position is found.
• Situation: The position of a point relative to other geographic features.
• Relief

Environmental Definitions

Here are some fundamental environmental definitions:

Aquifer

An aquifer is an underground water reservoir. Aquifers form when precipitation water filters through the ground, finds a waterproof layer, and accumulates on it. Their waters can be discharged through rivers and springs or directly into the sea.

Acid Rain

Acid rain is precipitation with a higher degree of acidity than normal. It occurs when emissions of sulfur and nitrogen mix with water vapor in the air and become diluted solutions of sulfuric acid and nitric acid, which then fall to the Earth's surface as rain. It causes changes in vegetation, soil, water, and buildings.

The Ozone Layer

The ozone layer lies between 15 and 55 km in height and filters ultraviolet...

Understanding Sea Level Changes and Climate Impacts

Sea level changes are a critical indicator and consequence of global climate shifts. These changes are influenced by various factors, both natural and anthropogenic.

Causes of Sea Level Change

Water Cycle Dynamics

The water cycle involves the evaporation of ocean water, cloud formation where water vapor condenses, and its return to the sea directly or through rivers. During glacial periods, frequent snowfall accumulates as ice on continents. This withdrawal of water from the oceans and its accumulation as continental ice leads to a significant decrease in global sea levels.

Thermal Expansion of Ocean Water

During warmer periods, sea levels rise not only because ice melts and adds more water to the...

Earth Composition and Structure

The Earth is composed of the core, the mantle (lower and upper), the mesosphere, and the lithosphere. The asthenosphere and oceanic crust are formed by mantle material, gabbros, and sediment.

Methods of Studying the Earth

Direct Methods

• Observation of surface rocks
• Mines and surveys
• Laboratory experiments

Indirect Methods

• Gravimetric, magnetic, and geothermal methods
• Meteorites (siderites, siderolites, and lithometeorites)
• Seismic methods

Seismic Wave Characteristics

• P waves: Vibrate in the same direction as the propagation.
• S waves: Move perpendicular to the direction of wave propagation.
• Surface waves:
  • Rayleigh waves (R): Move in an ascending and descending motion.
  • Love waves (L): Move in a horizontal plane, similar to S waves,

Concept of Material

Materials refer to all raw substances used in the production of useful objects for people. The manipulation of these raw materials produces objects that improve living standards.

Material Classification by Source

• Natural: Animal, vegetable, and mineral.
• Artificial.

Brief History of Material Use

Stone Age

• Paleolithic (2.5 million – 10,000 years ago): Stone, bones, horn, leather.
• Neolithic: Ceramics (clay heated over 450°C), bitumen, collagen glue.

Metal Age

• 4000 BC (Mesopotamia): Copper, gold, silver.
• 3000 BC – Bronze Age: An alloy of copper and tin; harder and with a lower melting point than copper. Used for weapons production.
• 1000 – 1500 BC: Iron, glass, and then timber.
• 20th Century: Concrete (cement + water + gravel).

Evolution

Environmental Phenomena

• Greenhouse Effect: The phenomenon whereby certain gases retain part of the energy emitted by the soil after being heated by solar radiation.
• Acid Rain: Atmospheric humidity combined with sulfur dioxide and nitrogen oxides emitted by factories.
• Smog: Pollution caused by a combination of air contaminants during a long period of high pressure.
• Desertification: The transformation of land used for cultivation into desert lands.
• Loss of Biodiversity: The elimination of natural areas, destruction of tropical forests with a variety of species, fires, use of pesticides in farming, overfishing, and water and air pollution.

Materials and Metallurgy

• Material: Any matter used to manufacture something.
• Metallurgy: The science and technique

Principal Natural Resources

• Air
• Soil
• Minerals
• Energy: Renewable and non-renewable
• Biological: Overexploitation of plant resources, hunting, and marine resource exploitation
• Water: A limited resource requiring purification and cleansing

Sewage Treatment Process

1. Pretreatment

Wastewater enters a tank and reaches the pumping station. It undergoes grinding, screening, desanding, and degreasing. Sand and grease are removed before reaching primary sedimentation.

2. Primary Treatment

Sludge reaches primary beds.

3. Secondary Treatment

Utilizes bacterial reactors and secondary clarifiers to process secondary sludge.

4. Tertiary Treatment

Final sieving occurs before water is discharged into rivers.

5. Sludge Treatment

Biological production methods are used to create...

Major Mountain Systems and Regions of Spain

• Cantabrian Mountains: Cantabria, Basque Country, Navarra, Asturias, León, Palencia, and Lugo.
• Iberian System: Pamplona, La Rioja, Zaragoza, Teruel, Castellón, Valencia, Alicante, and Albacete.
• Sierra Morena: Huelva, Seville, Córdoba, and Jaén.
• Pyrenees: Girona, Lleida, Barcelona, Huesca, Pamplona, and Guipuzcoa.
• Guadalquivir Depression: Huelva, Seville, Córdoba, and Cádiz.
• Central System: Salamanca, Valladolid, Ávila, Segovia, Soria, Guadalajara, and Cáceres.
• Baetic System: Cádiz, Málaga, Granada, Seville, Córdoba, Jaén, Murcia, Albacete, Cuenca, and Ciudad Real.
• Southern Sub-plateau: Badajoz, Cáceres, Toledo, and Ciudad Real.
• Montes de Toledo: Badajoz, Cáceres, Toledo, and Cuenca.
• Coastal Catalan