Understanding Oceanic and Continental Crust Dynamics
A Structured Soil Layers: Differences in Geochemical Units: refer to the Chemical Composition of the materials that compose them. Certainty: The outer layer extends to the Moho discontinuity. The most abundant chemical elements are: O, Si, Al. Continental Certainty: ranges from 25 to 70 km thick. The bottom half is dominated by metamorphic rocks, while the surface consists of Sedimentary Rocks. Ocean Certainty: is much thinner, between 5 and 10 km. It consists of three levels: Layer of Sediments,
Read MoreOceanic Crust Formation and Thermal Subsidence
Oceanic crust in the deep ocean consists of several layers of sediment. The most superficial layers are recent, and their age increases with depth. The age of the oldest sediment in each area is similar to the age of the basalts beneath them, representing the age of the oceanic crust at that location.
Three key observations are consistent across all oceanic basins:
- Basalts are present at the ridges, indicating formation within the last million years.
- The age of ancient basalts beneath the sediments
Earth Science: Key Concepts and Definitions
Key Concepts in Geology and Climatology
In geology, a fault is a discontinuity that forms in the rock fracture surface of the Earth (about 200 km depth) where tectonic forces exceed the resistance of the rocks. The rupture zone is an area, generally a well-defined fault plane, and its formation is accompanied by a landslide of rocks tangential to this plane.
An area of low pressure, or a storm, is a region where the atmospheric pressure is lower than the surrounding air. Tropical storms, extratropical
Read MoreUnderstanding Erosion, Natural Risks, and Landslides
Erosion and Geological Activity
Erosion is identified as one of the principal external geological activities on Earth. Generally, it is considered responsible for the leveling of landforms over time, causing spectacular modifications in the geographical landscape. Various external geological agents exist, leading to different types of erosion. Key examples include:
- Wind erosion
- Glacier erosion
- River erosion
- Marine erosion
Prevention of Structural Damage from Floods
Structural Measures include:
- Building
Popular Types of Bluefish: Tuna, Sardine, Salmon & More
Bluefish Varieties: A Culinary and Biological Overview
Bluefish are rich in fats, meats with intense color, and very tasty. They are important as heart-healthy food, but can sometimes cause indigestion. This group includes:
Tuna
Tuna, commonly known as wild bluefin tuna, belongs to the family Scombridae, order Perciformes. There are several areas where you can find tuna species. Bluefin tuna are distributed throughout the Atlantic, and schools of tuna are located in the Black Sea and the Mediterranean,
Read MoreSpain’s Diverse Climates: A Regional Analysis
Spain’s Diverse Climates
Spain exhibits a wide variety of climates due to its geographical location and diverse topography. Here’s a breakdown of the main climate types:
1) Oceanic Climate
- Location: Cantabrian coast and Atlantic region.
- Temperatures: Mild throughout the year due to the sea’s thermoregulatory effect. No true winter (no month below 5°C). Temperature range: under 15°C.
- Precipitation: High and regular throughout the year, peaking in autumn and spring. Lowest in summer due to the Azores